{ "instance": { "aiz1231201710k.htm": { "axisCustom": 5, "axisStandard": 58, "contextCount": 1038, "dts": { "calculationLink": { "local": [ "aiz-20171231_cal.xml" ] }, "definitionLink": { "local": [ "aiz-20171231_def.xml" ] }, "inline": { "local": [ "aiz1231201710k.htm" ] }, "labelLink": { "local": [ "aiz-20171231_lab.xml" ], "remote": [ "http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-doc-2016-01-31.xml", "http://xbrl.sec.gov/dei/2014/dei-doc-2014-01-31.xml", "http://xbrl.sec.gov/invest/2013/invest-doc-2013-01-31.xml" ] }, "presentationLink": { "local": [ "aiz-20171231_pre.xml" ] }, "referenceLink": { "remote": [ "http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-ref-2016-01-31.xml", "http://xbrl.sec.gov/dei/2014/dei-ref-2014-01-31.xml", "http://xbrl.sec.gov/invest/2013/invest-ref-2013-01-31.xml" ] }, "schema": { "local": [ "aiz-20171231.xsd" ], "remote": [ "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd", "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd", "http://www.xbrl.org/2003/xl-2003-12-31.xsd", "http://www.xbrl.org/2003/xlink-2003-12-31.xsd", "http://www.xbrl.org/2005/xbrldt-2005.xsd", "http://www.xbrl.org/2006/ref-2006-02-27.xsd", "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd", "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd", "http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd", "http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2016/elts/us-parts-codification-2016-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2016/elts/us-roles-2016-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2016/elts/us-types-2016-01-31.xsd", "http://xbrl.sec.gov/country/2016/country-2016-01-31.xsd", "http://xbrl.sec.gov/currency/2016/currency-2016-01-31.xsd", "http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd", "http://xbrl.sec.gov/exch/2016/exch-2016-01-31.xsd", "http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd", "http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd", "http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd", "http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" ] } }, "elementCount": 1322, "entityCount": 1, "hidden": { "http://fasb.org/us-gaap/2016-01-31": 106, "http://www.assurant.com/20171231": 21, "http://xbrl.sec.gov/dei/2014-01-31": 15, "total": 142 }, "keyCustom": 183, "keyStandard": 611, "memberCustom": 109, "memberStandard": 116, "nsprefix": "aiz", "nsuri": "http://www.assurant.com/20171231", "report": { "R1": { "firstAnchor": null, "groupType": "document", "isDefault": "true", "longName": "0001000 - Document - Document And Entity Information", "role": "http://www.assurant.com/role/DocumentAndEntityInformation", "shortName": "Document And Entity Information", "subGroupType": "", "uniqueAnchor": null }, "R10": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SegmentReportingDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2101100 - Disclosure - Segment Information", "role": "http://www.assurant.com/role/SegmentInformation", "shortName": "Segment Information", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SegmentReportingDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R100": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2413405 - Disclosure - VOBA And Other Intangible Assets (Information About Other Intangible Assets) (Details)", "role": "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails", "shortName": "VOBA And Other Intangible Assets (Information About Other Intangible Assets) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R101": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_us-gaap_OtherIntangibleAssetsMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearOne", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2413406 - Disclosure - VOBA And Other Intangible Assets (Future Amortization Expenses) (Details)", "role": "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "shortName": "VOBA And Other Intangible Assets (Future Amortization Expenses) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_us-gaap_OtherIntangibleAssetsMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearOne", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R102": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2414402 - Disclosure - Reserves (Narrative) (Details)", "role": "http://www.assurant.com/role/ReservesNarrativeDetails", "shortName": "Reserves (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_ProductOrServiceAxis_us-gaap_LifeAndAnnuityInsuranceProductLineMember", "decimals": "3", "lang": null, "name": "aiz:AssumedGuaranteedCreditedRatesOnAnnuitiesWhenEstablishingReservesForUniversalLifeAndAnnuityProductsNoLongerOffered", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R103": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ReinsuranceRecoverablesGross", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2414403 - Disclosure - Reserves (Roll Forward of Claims and Benefits Payable) (Details)", "role": "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails", "shortName": "Reserves (Roll Forward of Claims and Benefits Payable) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "us-gaap:ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2014Q4", "decimals": "-5", "lang": null, "name": "us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R104": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2414404 - Disclosure - Reserves (Schedule of Claims Development) (Details)", "role": "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails", "shortName": "Reserves (Schedule of Claims Development) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_StatementBusinessSegmentsAxis_aiz_GlobalLifestyleMember", "decimals": "-5", "lang": null, "name": "us-gaap:ShortdurationInsuranceContractsIncurredClaimsAndAllocatedClaimAdjustmentExpenseNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R105": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "us-gaap:ShortdurationInsuranceContractsScheduleOfHistoricalClaimsDurationTableTextBlock", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_StatementBusinessSegmentsAxis_aiz_GlobalLifestyleMember", "decimals": "3", "first": true, "lang": null, "name": "us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2414405 - Disclosure - Reserves Reserves (Schedule of Average Annual Payout of Incurred Claims by Age, Net of Reinsurance) (Details)", "role": "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails", "shortName": "Reserves Reserves (Schedule of Average Annual Payout of Incurred Claims by Age, Net of Reinsurance) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "us-gaap:ShortdurationInsuranceContractsScheduleOfHistoricalClaimsDurationTableTextBlock", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_StatementBusinessSegmentsAxis_aiz_GlobalLifestyleMember", "decimals": "3", "first": true, "lang": null, "name": "us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R106": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2414406 - Disclosure - Reserves Reserves (Reconciliation of Net Incurred and Paid Claims Development to Liability for Claims and Benefits Payable) (Details)", "role": "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "shortName": "Reserves Reserves (Reconciliation of Net Incurred and Paid Claims Development to Liability for Claims and Benefits Payable) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "lang": null, "name": "us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R107": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ReinsuranceRecoverables", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2415402 - Disclosure - Reinsurance (Reinsurance Recoverable) (Details)", "role": "http://www.assurant.com/role/ReinsuranceReinsuranceRecoverableDetails", "shortName": "Reinsurance (Reinsurance Recoverable) (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R108": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ReinsuranceRecoverablesGross", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2415403 - Disclosure - Reinsurance (Schedule Of Rating For Existing Reinsurance) (Details)", "role": "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails", "shortName": "Reinsurance (Schedule Of Rating For Existing Reinsurance) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_CreditRatingAMBestAxis_aiz_AmBestPlusPlusRatingOrPlusMember", "decimals": "-5", "lang": null, "name": "us-gaap:ReinsuranceRecoverablesGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R109": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ReinsuranceRecoverables", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2415404 - Disclosure - Reinsurance (Narrative) (Details)", "role": "http://www.assurant.com/role/ReinsuranceNarrativeDetails", "shortName": "Reinsurance (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "0", "lang": null, "name": "us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R11": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2101100 - Disclosure - Summary Of Significant Accounting Policies", "role": "http://www.assurant.com/role/SummaryOfSignificantAccountingPolicies", "shortName": "Summary Of Significant Accounting Policies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R110": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DirectPremiumsEarned", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2415405 - Disclosure - Reinsurance (Effect Of Reinsurance On Premiums Earned And Benefits Incurred) (Details)", "role": "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "shortName": "Reinsurance (Effect Of Reinsurance On Premiums Earned And Benefits Incurred) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_ProductOrServiceAxis_aiz_LongDurationMember", "decimals": "-5", "lang": null, "name": "us-gaap:DirectPremiumsEarned", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R111": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ProceedsFromIssuanceOfLongTermDebt", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2416401 - Disclosure - Debt (Senior Notes) (Details)", "role": "http://www.assurant.com/role/DebtSeniorNotesDetails", "shortName": "Debt (Senior Notes) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "D2017Q1Mar15_us-gaap_DebtInstrumentAxis_aiz_SeniorNotes2013Member", "decimals": "-5", "lang": null, "name": "us-gaap:DebtInstrumentPeriodicPaymentInterest", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R112": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_LineOfCreditFacilityAxis_aiz_JpMorganChaseBankNAndBankOfAmericaNMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:LineOfCredit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2416402 - Disclosure - Debt (Credit Facility) (Details)", "role": "http://www.assurant.com/role/DebtCreditFacilityDetails", "shortName": "Debt (Credit Facility) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_LineOfCreditFacilityAxis_aiz_JpMorganChaseBankNAndBankOfAmericaNMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:LineOfCredit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R113": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4_us-gaap_CreditFacilityAxis_us-gaap_RevolvingCreditFacilityMember", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2416403 - Disclosure - Debt (Loan Facilities) (Details)", "role": "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "shortName": "Debt (Loan Facilities) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "I2017Q4Dec15_us-gaap_CreditFacilityAxis_us-gaap_RevolvingCreditFacilityMember_us-gaap_DebtInstrumentAxis_aiz_TheTermLoanFacilityMember_us-gaap_LineOfCreditFacilityAxis_aiz_JpMorganChaseBankNAndBankOfAmericaNMember_us-gaap_ShortTermDebtTypeAxis_us-gaap_LineOfCreditMember", "decimals": "INF", "lang": null, "name": "us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R114": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:CommonStockSharesOutstanding", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2417402 - Disclosure - Common Stock (Details)", "role": "http://www.assurant.com/role/CommonStockDetails", "shortName": "Common Stock (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "INF", "lang": null, "name": "us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R115": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "2", "first": true, "lang": null, "name": "aiz:ForfeitureRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418402 - Disclosure - Stock Based Compensation (Narrative) (Details)", "role": "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "shortName": "Stock Based Compensation (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "2", "first": true, "lang": null, "name": "aiz:ForfeitureRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R116": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4_us-gaap_AwardTypeAxis_us-gaap_RestrictedStockUnitsRSUMember", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418403 - Disclosure - Stock Based Compensation (Summary Of Company's Outstanding Restricted Stock Units) (Details)", "role": "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails", "shortName": "Stock Based Compensation (Summary Of Company's Outstanding Restricted Stock Units) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_AwardTypeAxis_us-gaap_RestrictedStockUnitsRSUMember", "decimals": "INF", "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R117": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_AwardTypeAxis_us-gaap_RestrictedStockUnitsRSUMember_us-gaap_PlanNameAxis_aiz_LongTermEquityIncentivePlanMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AllocatedShareBasedCompensationExpense", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418404 - Disclosure - Stock Based Compensation (RSU Activity) (Details)", "role": "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails", "shortName": "Stock Based Compensation (RSU Activity) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_AwardTypeAxis_us-gaap_RestrictedStockUnitsRSUMember_us-gaap_PlanNameAxis_aiz_LongTermEquityIncentivePlanMember", "decimals": "-5", "lang": null, "name": "us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R118": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4_us-gaap_AwardTypeAxis_us-gaap_PerformanceSharesMember", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418405 - Disclosure - Stock Based Compensation (Schedule Of Company's Outstanding Performance Share Units) (Details)", "role": "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "shortName": "Stock Based Compensation (Schedule Of Company's Outstanding Performance Share Units) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_AwardTypeAxis_us-gaap_PerformanceSharesMember", "decimals": "INF", "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R119": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_AwardTypeAxis_us-gaap_PerformanceSharesMember_us-gaap_PlanNameAxis_aiz_LongTermEquityIncentivePlanMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AllocatedShareBasedCompensationExpense", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418406 - Disclosure - Stock Based Compensation (PSU Activity) (Details)", "role": "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "shortName": "Stock Based Compensation (PSU Activity) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_AwardTypeAxis_us-gaap_PerformanceSharesMember_us-gaap_PlanNameAxis_aiz_LongTermEquityIncentivePlanMember", "decimals": "-5", "lang": null, "name": "us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R12": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2103100 - Disclosure - Dispositions and Exit Activities", "role": "http://www.assurant.com/role/DispositionsAndExitActivities", "shortName": "Dispositions and Exit Activities", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R120": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_AwardTypeAxis_us-gaap_PerformanceSharesMember", "decimals": "4", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418407 - Disclosure - Stock Based Compensation (Schedule Of Estimation Of Fair Value Of Awards) (Details)", "role": "http://www.assurant.com/role/StockBasedCompensationScheduleOfEstimationOfFairValueOfAwardsDetails", "shortName": "Stock Based Compensation (Schedule Of Estimation Of Fair Value Of Awards) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_AwardTypeAxis_us-gaap_PerformanceSharesMember", "decimals": "4", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R121": { "firstAnchor": null, "groupType": "disclosure", "isDefault": "false", "longName": "2418408 - Disclosure - Stock Based Compensation (Schedule of Company's Share-Based Payment Award, ESPP, Valuation Assumptions) (Details)", "role": "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails", "shortName": "Stock Based Compensation (Schedule of Company's Share-Based Payment Award, ESPP, Valuation Assumptions) (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R122": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:TreasuryStockSharesAcquired", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2419401 - Disclosure - Stock Repurchase (Narrative) (Details)", "role": "http://www.assurant.com/role/StockRepurchaseNarrativeDetails", "shortName": "Stock Repurchase (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "lang": null, "name": "us-gaap:StockRepurchasedDuringPeriodValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R123": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2420402 - Disclosure - Accumulated Other Comprehensive Income (Components of Accumulated Other Comprehensive Income, Net of Tax) (Details)", "role": "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "shortName": "Accumulated Other Comprehensive Income (Components of Accumulated Other Comprehensive Income, Net of Tax) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "lang": null, "name": "us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R124": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2420403 - Disclosure - Accumulated Other Comprehensive Income (Reclassification Out Of Accumulated Other Comprehensive Income) (Details)", "role": "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "shortName": "Accumulated Other Comprehensive Income (Reclassification Out Of Accumulated Other Comprehensive Income) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "lang": null, "name": "us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R125": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:StatutoryAccountingPracticesStatutoryNetIncomeAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2421402 - Disclosure - Statutory Information (Summary Of Statutory Net Income And Capital And Surplus) (Details)", "role": "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails", "shortName": "Statutory Information (Summary Of Statutory Net Income And Capital And Surplus) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:StatutoryAccountingPracticesStatutoryNetIncomeAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R126": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "INF", "first": true, "lang": null, "name": "aiz:StatutoryAccountingPracticesStatutorySurplusPercentage", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2421403 - Disclosure - Statutory Information (Narrative) (Details)", "role": "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "shortName": "Statutory Information (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "INF", "first": true, "lang": null, "name": "aiz:StatutoryAccountingPracticesStatutorySurplusPercentage", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R127": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "2", "first": true, "lang": null, "name": "aiz:PercentageOfPensionPlanDeficitAddedToAmountOfServiceCost", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422402 - Disclosure - Retirement And Other Employee Benefits (Narrative) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "shortName": "Retirement And Other Employee Benefits (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "2", "first": true, "lang": null, "name": "aiz:PercentageOfPensionPlanDeficitAddedToAmountOfServiceCost", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R128": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanBenefitObligation", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422403 - Disclosure - Retirement And Other Employee Benefits (Summary Of Pension Benefits And Retirement Health Benefits Plans) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails", "shortName": "Retirement And Other Employee Benefits (Summary Of Pension Benefits And Retirement Health Benefits Plans) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "lang": null, "name": "us-gaap:DefinedBenefitPlanActuarialGainLoss", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R129": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanFairValueOfPlanAssets", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422404 - Disclosure - Retirement And Other Employee Benefits (Summary Of Projected Benefit Obligations And The Accumulated Benefit Obligations) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails", "shortName": "Retirement And Other Employee Benefits (Summary Of Projected Benefit Obligations And The Accumulated Benefit Obligations) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "lang": null, "name": "us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R13": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "invest:InvestmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2105100 - Disclosure - Investments", "role": "http://www.assurant.com/role/Investments", "shortName": "Investments", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "invest:InvestmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R130": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsCurrentAndNoncurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422405 - Disclosure - Retirement And Other Employee Benefits (Amount Recognized In Consolidated Balance Sheets) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountRecognizedInConsolidatedBalanceSheetsDetails", "shortName": "Retirement And Other Employee Benefits (Amount Recognized In Consolidated Balance Sheets) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsCurrentAndNoncurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R131": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422406 - Disclosure - Retirement And Other Employee Benefits (Amounts Recognized In Accumulated Other Comprehensive Income) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails", "shortName": "Retirement And Other Employee Benefits (Amounts Recognized In Accumulated Other Comprehensive Income) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R132": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanServiceCost", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422407 - Disclosure - Retirement And Other Employee Benefits (Components Of Net Periodic Benefit Cost) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails", "shortName": "Retirement And Other Employee Benefits (Components Of Net Periodic Benefit Cost) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "lang": null, "name": "us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R133": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2015Q4_aiz_RetirementPlanTaxStatusAxis_aiz_QualifiedPlanMember_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "4", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422408 - Disclosure - Retirement And Other Employee Benefits (Weighted Average Assumptions Used To Determine Projected Benefit Obligation) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails", "shortName": "Retirement And Other Employee Benefits (Weighted Average Assumptions Used To Determine Projected Benefit Obligation) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2015Q4_aiz_RetirementPlanTaxStatusAxis_aiz_QualifiedPlanMember_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "4", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R134": { "firstAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "td", "tr", "table", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember_us-gaap_RangeAxis_us-gaap_MinimumMember", "decimals": "4", "first": true, "lang": null, "name": "aiz:RateOfCompensationIncreasedUnderNetPeriodicBenefitCost", "reportCount": 1, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422409 - Disclosure - Retirement And Other Employee Benefits (Weighted Average Assumptions Used To Determine Net Periodic Benefit Cost) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "shortName": "Retirement And Other Employee Benefits (Weighted Average Assumptions Used To Determine Net Periodic Benefit Cost) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2015Q4_aiz_RetirementPlanTaxStatusAxis_aiz_QualifiedPlanMember_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "4", "lang": null, "name": "aiz:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateUsedforCalculatingNetCost", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R135": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_aiz_RetirementPlanTypeAxis_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember", "decimals": "3", "first": true, "lang": null, "name": "aiz:DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPre65NonReimbursementPlan", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422410 - Disclosure - Retirement And Other Employee Benefits (Summary Of Health Care Cost Trend Rates) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails", "shortName": "Retirement And Other Employee Benefits (Summary Of Health Care Cost Trend Rates) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_aiz_RetirementPlanTypeAxis_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember", "decimals": "3", "first": true, "lang": null, "name": "aiz:DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPre65NonReimbursementPlan", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R136": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_aiz_RetirementPlanTypeAxis_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422411 - Disclosure - Retirement And Other Employee Benefits (Effect Of One Percent Change In Assumed Health Care Cost) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails", "shortName": "Retirement And Other Employee Benefits (Effect Of One Percent Change In Assumed Health Care Cost) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_aiz_RetirementPlanTypeAxis_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R137": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_us-gaap_EquitySecuritiesMember", "decimals": "2", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanTargetPlanAssetAllocations", "reportCount": 1, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422412 - Disclosure - Retirement And Other Employee Benefits (Allocation Of Plan Assets, Based On The Fair Value Of Assets Held And Target Allocation) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "shortName": "Retirement And Other Employee Benefits (Allocation Of Plan Assets, Based On The Fair Value Of Assets Held And Target Allocation) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_aiz_EquitySecuritiesCommonStockUSListedSmallCapMember", "decimals": "3", "lang": null, "name": "us-gaap:DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R138": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "aiz:DefinedBenefitPlanFairValueOfPlanAssetsNetOfInterestReceivableAndPayable", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422413 - Disclosure - Retirement And Other Employee Benefits (Summary Of Fair Value Hierarchy For Plan Assets) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "shortName": "Retirement And Other Employee Benefits (Summary Of Fair Value Hierarchy For Plan Assets) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_aiz_CashAndCashEquivalentsShortTermInvestmentFundsMember", "decimals": "-5", "lang": null, "name": "aiz:DefinedBenefitPlanFairValueOfPlanAssetsNetOfInterestReceivableAndPayable", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R139": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422415 - Disclosure - Retirement And Other Employee Benefits (Estimated Future Benefit Payments From The Plans) (Details)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails", "shortName": "Retirement And Other Employee Benefits (Estimated Future Benefit Payments From The Plans) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R14": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:VariableInterestEntityDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2106100 - Disclosure - Variable Interest Entities", "role": "http://www.assurant.com/role/VariableInterestEntities", "shortName": "Variable Interest Entities", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:VariableInterestEntityDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R140": { "firstAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_us-gaap_PerformanceSharesMember", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2423402 - Disclosure - Earnings per Common Share (Narrative) (Details)", "role": "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails", "shortName": "Earnings per Common Share (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_us-gaap_PerformanceSharesMember", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R141": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2423403 - Disclosure - Earnings per Common Share (Net Income, Weighted Average Common Shares Used In Calculating Basic Earnings Per Common Share And Diluted EPS) (Details)", "role": "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "shortName": "Earnings per Common Share (Net Income, Weighted Average Common Shares Used In Calculating Basic Earnings Per Common Share And Diluted EPS) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "lang": null, "name": "us-gaap:UndistributedEarnings", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R142": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:Revenues", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2424402 - Disclosure - Quarterly Results Of Operations (Unaudited) (Summary Of Quarterly Results Of Operations) (Details)", "role": "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsOfOperationsDetails", "shortName": "Quarterly Results Of Operations (Unaudited) (Summary Of Quarterly Results Of Operations) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4QTD", "decimals": "2", "lang": null, "name": "aiz:IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" } }, "R143": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "D2017Q4Dec22", "decimals": "-5", "first": true, "lang": null, "name": "aiz:TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2424403 - Disclosure - Quarterly Results Of Operations (Unaudited) (Narrative) (Details)", "role": "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails", "shortName": "Quarterly Results Of Operations (Unaudited) (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2016Q4QTD_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_aiz_UnderstatementofIncomeFromContractsMember", "decimals": "-5", "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R144": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:OperatingLeasesFutureMinimumPaymentsDueCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2425402 - Disclosure - Commitments and Contingencies (Schedule Of Future Minimum Lease Payments For Operating Leases) (Details)", "role": "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails", "shortName": "Commitments and Contingencies (Schedule Of Future Minimum Lease Payments For Operating Leases) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:OperatingLeasesFutureMinimumPaymentsDueCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R145": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:OperatingLeasesRentExpenseNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2425403 - Disclosure - Commitments and Contingencies (Narrative) (Details)", "role": "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails", "shortName": "Commitments and Contingencies (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:OperatingLeasesRentExpenseNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R146": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2426401 - Disclosure - Acquisitions (Details)", "role": "http://www.assurant.com/role/AcquisitionsDetails", "shortName": "Acquisitions (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "I2017Q1Feb01_us-gaap_BusinessAcquisitionAxis_aiz_GreenTreeInsuranceAgencyInc.Member", "decimals": "INF", "lang": null, "name": "us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R147": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "D2018Q1Jan8_us-gaap_BusinessAcquisitionAxis_aiz_TWGHoldingsMember_us-gaap_StatementScenarioAxis_us-gaap_ScenarioForecastMember", "decimals": "0", "first": true, "lang": null, "name": "aiz:ExpectedBusinessAcquisitionEquityInterestIssuedorIssuableNumberofShares", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2427401 - Disclosure - Subsequent Events (Details)", "role": "http://www.assurant.com/role/SubsequentEventsDetails", "shortName": "Subsequent Events (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "D2018Q1Jan8_us-gaap_BusinessAcquisitionAxis_aiz_TWGHoldingsMember_us-gaap_StatementScenarioAxis_us-gaap_ScenarioForecastMember", "decimals": "0", "first": true, "lang": null, "name": "aiz:ExpectedBusinessAcquisitionEquityInterestIssuedorIssuableNumberofShares", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R148": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2428401 - Schedule - Schedule I - Summary Of Investments Other -Than-Investments In Related Parties (Details)", "role": "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails", "shortName": "Schedule I - Summary Of Investments Other -Than-Investments In Related Parties (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "lang": null, "name": "us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R149": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtSecurities", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2432401 - Schedule - Schedule II - Condensed Balance Sheet (Parent Only) (Details)", "role": "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails", "shortName": "Schedule II - Condensed Balance Sheet (Parent Only) (Details)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_dei_LegalEntityAxis_us-gaap_ParentCompanyMember", "decimals": "-5", "lang": null, "name": "aiz:EquityInvestmentsInSubsidiaries", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R15": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2107100 - Disclosure - Fair Value Disclosures", "role": "http://www.assurant.com/role/FairValueDisclosures", "shortName": "Fair Value Disclosures", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R150": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2432402 - Schedule - Schedule II - Condensed Balance Sheet (Parent Only) (Parenthetical) (Details)", "role": "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails", "shortName": "Schedule II - Condensed Balance Sheet (Parent Only) (Parenthetical) (Details)", "subGroupType": "parenthetical", "uniqueAnchor": null }, "R151": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetInvestmentIncome", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2432403 - Schedule - Schedule II - (Parent Only) Schedule II - Condensed Income Statement (Parent Only) (Details)", "role": "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "shortName": "Schedule II - (Parent Only) Schedule II - Condensed Income Statement (Parent Only) (Details)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_dei_LegalEntityAxis_us-gaap_ParentCompanyMember", "decimals": "-5", "lang": null, "name": "us-gaap:NetInvestmentIncome", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R152": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2432404 - Schedule - Schedule II - (Parent Only) Schedule II - Condensed Statement of Comprehensive Income (Parent Only) (Details)", "role": "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails", "shortName": "Schedule II - (Parent Only) Schedule II - Condensed Statement of Comprehensive Income (Parent Only) (Details)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_dei_LegalEntityAxis_us-gaap_ParentCompanyMember", "decimals": "-5", "lang": null, "name": "us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R153": { "firstAnchor": null, "groupType": "", "isDefault": "false", "longName": "2432405 - Schedule - Schedule II - (Parent Only) Schedule II - Condensed Statement of Comprehensive Income (Parent Only) (Parenthetical) (Details)", "role": "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyParentheticalDetails", "shortName": "Schedule II - (Parent Only) Schedule II - Condensed Statement of Comprehensive Income (Parent Only) (Parenthetical) (Details)", "subGroupType": "parenthetical", "uniqueAnchor": null }, "R154": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2432406 - Schedule - Schedule II - (Parent Only) Schedule II - Condensed Cash Flows (Parent Only) (Details)", "role": "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails", "shortName": "Schedule II - (Parent Only) Schedule II - Condensed Cash Flows (Parent Only) (Details)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_dei_LegalEntityAxis_us-gaap_ParentCompanyMember", "decimals": "-5", "lang": null, "name": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R155": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2433401 - Schedule - Schedule III - Supplementary Insurance Information (Details)", "role": "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "shortName": "Schedule III - Supplementary Insurance Information (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R156": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:LifeInsuranceInForceGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2434401 - Schedule - Schedule IV - Reinsurance (Details)", "role": "http://www.assurant.com/role/ScheduleIvReinsuranceDetails", "shortName": "Schedule IV - Reinsurance (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:LifeInsuranceInForceGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R157": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ValuationAllowancesAndReservesBalance", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2435401 - Schedule - Schedule V - Valuation And Qualifying Accounts (Details)", "role": "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails", "shortName": "Schedule V - Valuation And Qualifying Accounts (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2014Q4", "decimals": "-5", "lang": null, "name": "us-gaap:ValuationAllowancesAndReservesBalance", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R16": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PremiumsReceivableNote", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2108100 - Disclosure - Premiums And Accounts Receivable", "role": "http://www.assurant.com/role/PremiumsAndAccountsReceivable", "shortName": "Premiums And Accounts Receivable", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PremiumsReceivableNote", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R17": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2109100 - Disclosure - Income Taxes", "role": "http://www.assurant.com/role/IncomeTaxes", "shortName": "Income Taxes", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R18": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DeferredPolicyAcquisitionCostsTextBlock1", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2110100 - Disclosure - Deferred Acquisition Costs", "role": "http://www.assurant.com/role/DeferredAcquisitionCosts", "shortName": "Deferred Acquisition Costs", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DeferredPolicyAcquisitionCostsTextBlock1", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R19": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2111100 - Disclosure - Property And Equipment", "role": "http://www.assurant.com/role/PropertyAndEquipment", "shortName": "Property And Equipment", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R2": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtSecurities", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1001000 - Statement - Consolidated Balance Sheets", "role": "http://www.assurant.com/role/ConsolidatedBalanceSheets", "shortName": "Consolidated Balance Sheets", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "lang": null, "name": "us-gaap:SeparateAccountAssets", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R20": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:GoodwillDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2112100 - Disclosure - Goodwill", "role": "http://www.assurant.com/role/Goodwill", "shortName": "Goodwill", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:GoodwillDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R21": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IntangibleAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2113100 - Disclosure - VOBA And Other Intangible Assets", "role": "http://www.assurant.com/role/VobaAndOtherIntangibleAssets", "shortName": "VOBA And Other Intangible Assets", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IntangibleAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R22": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:InsuranceDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2114100 - Disclosure - Reserves", "role": "http://www.assurant.com/role/Reserves", "shortName": "Reserves", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:InsuranceDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R23": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ReinsuranceTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2115100 - Disclosure - Reinsurance", "role": "http://www.assurant.com/role/Reinsurance", "shortName": "Reinsurance", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ReinsuranceTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R24": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DebtDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2116100 - Disclosure - Debt", "role": "http://www.assurant.com/role/Debt", "shortName": "Debt", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DebtDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R25": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2117100 - Disclosure - Common Stock", "role": "http://www.assurant.com/role/CommonStock", "shortName": "Common Stock", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R26": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2118100 - Disclosure - Stock Based Compensation", "role": "http://www.assurant.com/role/StockBasedCompensation", "shortName": "Stock Based Compensation", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R27": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:TreasuryStockTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2119100 - Disclosure - Stock Repurchase", "role": "http://www.assurant.com/role/StockRepurchase", "shortName": "Stock Repurchase", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:TreasuryStockTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R28": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2120100 - Disclosure - Accumulated Other Comprehensive Income", "role": "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncome", "shortName": "Accumulated Other Comprehensive Income", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R29": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "aiz:StatutoryAccountingPracticesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2121100 - Disclosure - Statutory Information", "role": "http://www.assurant.com/role/StatutoryInformation", "shortName": "Statutory Information", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "aiz:StatutoryAccountingPracticesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R3": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "aiz:VariableInterestEntityConsolidatedAssetsCash", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1001501 - Statement - Consolidated Balance Sheets (Parenthetical)", "role": "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "shortName": "Consolidated Balance Sheets (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "aiz:VariableInterestEntityConsolidatedAssetsCash", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R30": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2122100 - Disclosure - Retirement And Other Employee Benefits", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefits", "shortName": "Retirement And Other Employee Benefits", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R31": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2123100 - Disclosure - Earnings per Common Share", "role": "http://www.assurant.com/role/EarningsPerCommonShare", "shortName": "Earnings per Common Share", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R32": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:QuarterlyFinancialInformationTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2124100 - Disclosure - Quarterly Results Of Operations (Unaudited)", "role": "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnaudited", "shortName": "Quarterly Results Of Operations (Unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:QuarterlyFinancialInformationTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R33": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2125100 - Disclosure - Commitments and Contingencies", "role": "http://www.assurant.com/role/CommitmentsAndContingencies", "shortName": "Commitments and Contingencies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R34": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BusinessCombinationDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2126100 - Disclosure - Acquisitions", "role": "http://www.assurant.com/role/Acquisitions", "shortName": "Acquisitions", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BusinessCombinationDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R35": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SubsequentEventsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2127100 - Disclosure - Subsequent Events (Notes)", "role": "http://www.assurant.com/role/SubsequentEventsNotes", "shortName": "Subsequent Events (Notes)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SubsequentEventsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R36": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2128100 - Schedule - Schedule I - Summary Of Investments Other -Than-Investments In Related Parties", "role": "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedParties", "shortName": "Schedule I - Summary Of Investments Other -Than-Investments In Related Parties", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R37": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2132100 - Schedule - Schedule II - (Parent Only)", "role": "http://www.assurant.com/role/ScheduleIiParentOnly", "shortName": "Schedule II - (Parent Only)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R38": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2133100 - Schedule - Schedule III - Supplementary Insurance Information", "role": "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformation", "shortName": "Schedule III - Supplementary Insurance Information", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R39": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2134100 - Schedule - Schedule IV - Reinsurance", "role": "http://www.assurant.com/role/ScheduleIvReinsurance", "shortName": "Schedule IV - Reinsurance", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R4": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:PremiumsEarnedNet", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1002000 - Statement - Consolidated Statements Of Operations", "role": "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "shortName": "Consolidated Statements Of Operations", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "2", "lang": null, "name": "us-gaap:CommonStockDividendsPerShareCashPaid", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" } }, "R40": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "2135100 - Schedule - Schedule V - Valuation And Qualifying Accounts", "role": "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccounts", "shortName": "Schedule V - Valuation And Qualifying Accounts", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R41": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2201201 - Disclosure - Summary Of Significant Accounting Policies (Policies)", "role": "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies", "shortName": "Summary Of Significant Accounting Policies (Policies)", "subGroupType": "policies", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R42": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2301301 - Disclosure - Segment Information (Tables)", "role": "http://www.assurant.com/role/SegmentInformationTables", "shortName": "Segment Information (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R43": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2303301 - Disclosure - Dispositions and Exit Activitie (Tables)", "role": "http://www.assurant.com/role/DispositionsAndExitActivitieTables", "shortName": "Dispositions and Exit Activitie (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R44": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:AvailableForSaleSecuritiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2305301 - Disclosure - Investments (Tables)", "role": "http://www.assurant.com/role/InvestmentsTables", "shortName": "Investments (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:AvailableForSaleSecuritiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R45": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2306301 - Disclosure - Variable Interest Entities (Tables)", "role": "http://www.assurant.com/role/VariableInterestEntitiesTables", "shortName": "Variable Interest Entities (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "lang": "en-US", "name": "aiz:ScheduleofCarryingValuesandEstimatedFairValuesofAssetsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R46": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2307301 - Disclosure - Fair Value Disclosures (Tables)", "role": "http://www.assurant.com/role/FairValueDisclosuresTables", "shortName": "Fair Value Disclosures (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "lang": "en-US", "name": "us-gaap:FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R47": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "aiz:ScheduleOfAllowanceForUncollectiblePremiumsAndAccountsReceivableTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2308301 - Disclosure - Premiums And Accounts Receivable (Tables)", "role": "http://www.assurant.com/role/PremiumsAndAccountsReceivableTables", "shortName": "Premiums And Accounts Receivable (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "aiz:ScheduleOfAllowanceForUncollectiblePremiumsAndAccountsReceivableTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R48": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2309301 - Disclosure - Income Taxes (Tables)", "role": "http://www.assurant.com/role/IncomeTaxesTables", "shortName": "Income Taxes (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R49": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DeferredPolicyAcquisitionCostsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2310301 - Disclosure - Deferred Acquisition Costs (Tables)", "role": "http://www.assurant.com/role/DeferredAcquisitionCostsTables", "shortName": "Deferred Acquisition Costs (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DeferredPolicyAcquisitionCostsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R5": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1003000 - Statement - Consolidated Statement Of Comprehensive Income", "role": "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome", "shortName": "Consolidated Statement Of Comprehensive Income", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "lang": null, "name": "us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R50": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2311301 - Disclosure - Property And Equipment (Tables)", "role": "http://www.assurant.com/role/PropertyAndEquipmentTables", "shortName": "Property And Equipment (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R51": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfGoodwillTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2312301 - Disclosure - Goodwill (Tables)", "role": "http://www.assurant.com/role/GoodwillTables", "shortName": "Goodwill (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfGoodwillTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R52": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PresentValueOfFutureInsuranceProfitsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2313301 - Disclosure - VOBA And Other Intangible Assets (Tables)", "role": "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsTables", "shortName": "VOBA And Other Intangible Assets (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PresentValueOfFutureInsuranceProfitsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R53": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2314301 - Disclosure - Reserves (Tables)", "role": "http://www.assurant.com/role/ReservesTables", "shortName": "Reserves (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R54": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "aiz:ScheduleOfReinsuranceRecoverableTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2315301 - Disclosure - Reinsurance (Tables)", "role": "http://www.assurant.com/role/ReinsuranceTables", "shortName": "Reinsurance (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "aiz:ScheduleOfReinsuranceRecoverableTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R55": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfStockByClassTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2317301 - Disclosure - Common Stock (Tables)", "role": "http://www.assurant.com/role/CommonStockTables", "shortName": "Common Stock (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfStockByClassTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R56": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2318301 - Disclosure - Stock Based Compensation (Tables)", "role": "http://www.assurant.com/role/StockBasedCompensationTables", "shortName": "Stock Based Compensation (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R57": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2320301 - Disclosure - Accumulated Other Comprehensive Income (Tables)", "role": "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeTables", "shortName": "Accumulated Other Comprehensive Income (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R58": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StatutoryAccountingPracticesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2321301 - Disclosure - Statutory Information (Tables)", "role": "http://www.assurant.com/role/StatutoryInformationTables", "shortName": "Statutory Information (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StatutoryAccountingPracticesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R59": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfDefinedBenefitPlansDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2322301 - Disclosure - Retirement And Other Employee Benefits (Tables)", "role": "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables", "shortName": "Retirement And Other Employee Benefits (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfDefinedBenefitPlansDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R6": { "firstAnchor": null, "groupType": "statement", "isDefault": "false", "longName": "1003501 - Statement - Consolidated Statements Of Comprehensive Income (Parenthetical)", "role": "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical", "shortName": "Consolidated Statements Of Comprehensive Income (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": null }, "R60": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEarningsPerShareBasicByCommonClassTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2323301 - Disclosure - Earnings per Common Share (Tables)", "role": "http://www.assurant.com/role/EarningsPerCommonShareTables", "shortName": "Earnings per Common Share (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEarningsPerShareBasicByCommonClassTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R61": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2324301 - Disclosure - Quarterly Results Of Operations (Unaudited) (Tables)", "role": "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedTables", "shortName": "Quarterly Results Of Operations (Unaudited) (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R62": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2325301 - Disclosure - Commitments and Contingencies (Tables)", "role": "http://www.assurant.com/role/CommitmentsAndContingenciesTables", "shortName": "Commitments and Contingencies (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R63": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:NumberOfReportableSegments", "reportCount": 1, "unique": true, "unitRef": "reportable_segment", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2401402 - Disclosure - Segment Information (Financial Information By Segment) (Details)", "role": "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "shortName": "Segment Information (Financial Information By Segment) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:NumberOfReportableSegments", "reportCount": 1, "unique": true, "unitRef": "reportable_segment", "xsiNil": "false" } }, "R64": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2401402 - Disclosure - Summary Of Significant Accounting Policies (Details)", "role": "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails", "shortName": "Summary Of Significant Accounting Policies (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_PropertyPlantAndEquipmentByTypeAxis_us-gaap_BuildingMember_us-gaap_RangeAxis_us-gaap_MaximumMember", "decimals": null, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentUsefulLife", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R65": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:Revenues", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2401403 - Disclosure - Segment Information (Summary Of Financial Information By Geographic Location) (Details)", "role": "http://www.assurant.com/role/SegmentInformationSummaryOfFinancialInformationByGeographicLocationDetails", "shortName": "Segment Information (Summary Of Financial Information By Geographic Location) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2015Q4", "decimals": "-5", "lang": null, "name": "us-gaap:NoncurrentAssets", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R66": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_SubsegmentsAxis_aiz_AssurantHealth1Member", "decimals": "-5", "first": true, "lang": null, "name": "aiz:NetEarnedPremiumsFeesandOtherIncome", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2401404 - Disclosure - Segment Information (Summary Of Net Earned Premiums By Segment And Product) (Details)", "role": "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails", "shortName": "Segment Information (Summary Of Net Earned Premiums By Segment And Product) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_SubsegmentsAxis_aiz_AssurantHealth1Member", "decimals": "-5", "first": true, "lang": null, "name": "aiz:NetEarnedPremiumsFeesandOtherIncome", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R67": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2403402 - Disclosure - Dispositions and Exit Activities (Narrative) (Details)", "role": "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "shortName": "Dispositions and Exit Activities (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "D2016Q1Mar01_us-gaap_DisposalGroupClassificationAxis_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_aiz_AssurantEmployeeBenefitsAEBMember", "decimals": "-5", "lang": null, "name": "us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R68": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_DisposalGroupClassificationAxis_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_aiz_AssurantEmployeeBenefitsAEBMember", "decimals": "-5", "first": true, "lang": null, "name": "aiz:DisposalGroupNotDiscontinuedOperationGainLossonDisposalNetofTransactionCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2403403 - Disclosure - Dispositions and Exit Activities (Gain by Transaction Component) (Details)", "role": "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "shortName": "Dispositions and Exit Activities (Gain by Transaction Component) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_DisposalGroupClassificationAxis_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_aiz_AssurantEmployeeBenefitsAEBMember", "decimals": "-5", "first": true, "lang": null, "name": "aiz:DisposalGroupNotDiscontinuedOperationGainLossonDisposalNetofTransactionCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R69": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405402 - Disclosure - Investments (Amortized Cost, Gross Unrealized Gains And Losses, Fair Value And OTTI) (Details)", "role": "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "shortName": "Investments (Amortized Cost, Gross Unrealized Gains And Losses, Fair Value And OTTI) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_InvestmentTypeAxis_us-gaap_FixedMaturitiesMember", "decimals": "-5", "lang": null, "name": "us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R7": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2014Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1004000 - Statement - Consolidated Statements Of Changes In Stockholders' Equity", "role": "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity", "shortName": "Consolidated Statements Of Changes In Stockholders' Equity", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2014Q4_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember", "decimals": "-5", "lang": null, "name": "us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R70": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "INF", "first": true, "lang": null, "name": "aiz:MaximumIndividualStateExposure", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405403 - Disclosure - Investments (Narrative) (Details)", "role": "http://www.assurant.com/role/InvestmentsNarrativeDetails", "shortName": "Investments (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "INF", "first": true, "lang": null, "name": "aiz:MaximumIndividualStateExposure", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R71": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405404 - Disclosure - Investments (Amortized Cost And Fair Value Of Fixed Maturity Securities By Contractual Maturity) (Details)", "role": "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "shortName": "Investments (Amortized Cost And Fair Value Of Fixed Maturity Securities By Contractual Maturity) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R72": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:GrossInvestmentIncomeOperating", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405405 - Disclosure - Investments (Categories Of Net Investment Income) (Details)", "role": "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "shortName": "Investments (Categories Of Net Investment Income) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:GrossInvestmentIncomeOperating", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R73": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405406 - Disclosure - Investments (Proceeds From Sales Of Available-For-Sale Securities And The Gross Realized Gains And Gross Realized Losses) (Details)", "role": "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails", "shortName": "Investments (Proceeds From Sales Of Available-For-Sale Securities And The Gross Realized Gains And Gross Realized Losses) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R74": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405407 - Disclosure - Investments (Net Realized Gains (Losses), Including Other-Than-Temporary Impairments) (Details)", "role": "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "shortName": "Investments (Net Realized Gains (Losses), Including Other-Than-Temporary Impairments) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "lang": null, "name": "us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R75": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405408 - Disclosure - Investments (Credit Loss Impairments Recognized) (Details)", "role": "http://www.assurant.com/role/InvestmentsCreditLossImpairmentsRecognizedDetails", "shortName": "Investments (Credit Loss Impairments Recognized) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2014Q4", "decimals": "-5", "lang": null, "name": "us-gaap:OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R76": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_InvestmentTypeAxis_us-gaap_FixedMaturitiesMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405409 - Disclosure - Investments (Category and Duration Of Gross Unrealized Losses On Fixed Maturity Securities And Equity Securities) (Details)", "role": "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "shortName": "Investments (Category and Duration Of Gross Unrealized Losses On Fixed Maturity Securities And Equity Securities) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_InvestmentTypeAxis_us-gaap_FixedMaturitiesMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R77": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "aiz:AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithinOneYearAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405410 - Disclosure - Investments (Amortized Cost And Fair Value Of Fixed Maturity Securities In An Unrealized Loss Position By Contractual Maturity) (Details)", "role": "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails", "shortName": "Investments (Amortized Cost And Fair Value Of Fixed Maturity Securities In An Unrealized Loss Position By Contractual Maturity) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "aiz:AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithinOneYearAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R78": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:LoansReceivableCommercialMortgage", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405411 - Disclosure - Investments (Credit Quality Indicators For Commercial Mortgage Loans) (Details)", "role": "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails", "shortName": "Investments (Credit Quality Indicators For Commercial Mortgage Loans) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "INF", "lang": null, "name": "aiz:CreditQualityPercentageForGrossCommercialMortgageLoans", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R79": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406402 - Disclosure - Variable Interest Entities (Narrative) (Details)", "role": "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails", "shortName": "Variable Interest Entities (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R8": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1005000 - Statement - Consolidated Statements Of Cash Flows", "role": "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "shortName": "Consolidated Statements Of Cash Flows", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "lang": null, "name": "us-gaap:DepreciationAmortizationAndAccretionNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R80": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:LiabilitiesFairValueDisclosure", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406403 - Disclosure - Variable Interest Entities - Fair Value of Financial Assets and Liabilities (Details)", "role": "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "shortName": "Variable Interest Entities - Fair Value of Financial Assets and Liabilities (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsNonrecurringMember_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember", "decimals": "-5", "lang": null, "name": "us-gaap:AssetsFairValueDisclosureNonrecurring", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R81": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4_us-gaap_FairValueByAssetClassAxis_us-gaap_RealEstateFundsMember_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel3Member_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember", "decimals": "-5", "first": true, "lang": null, "name": "aiz:VariableInterestEntityRealEstateFund", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406404 - Disclosure - Variable Interest Entities - Carrying value of level 3 assets (Details)", "role": "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "shortName": "Variable Interest Entities - Carrying value of level 3 assets (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4_us-gaap_FairValueByAssetClassAxis_us-gaap_RealEstateFundsMember_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel3Member_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember", "decimals": "-5", "first": true, "lang": null, "name": "aiz:VariableInterestEntityRealEstateFund", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R82": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AssetsFairValueDisclosureRecurring", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2407402 - Disclosure - Fair Value Disclosures (Fair Value For Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details)", "role": "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "shortName": "Fair Value Disclosures (Fair Value For Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AssetsFairValueDisclosureRecurring", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R83": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:FairValueAssetsLevel1ToLevel2TransfersAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2407403 - Disclosure - Fair Value Disclosures (Narrative) (Details)", "role": "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "shortName": "Fair Value Disclosures (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:FairValueAssetsLevel1ToLevel2TransfersAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R84": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel3Member", "decimals": "-5", "first": true, "lang": null, "name": "aiz:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityValue", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2407404 - Disclosure - Fair Value Disclosures (Change In Balance Sheet Carrying Value Associated With Level 3 Financial Assets Carried At Fair Value) (Details)", "role": "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "shortName": "Fair Value Disclosures (Change In Balance Sheet Carrying Value Associated With Level 3 Financial Assets Carried At Fair Value) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2015Q4_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel3Member", "decimals": "-5", "lang": null, "name": "aiz:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R85": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:FundsHeldUnderReinsuranceAgreementsLiability", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2407405 - Disclosure - Fair Value Disclosures (Carrying Value And Fair Value Of The Financial Instruments That Are Not Recognized Or Are Not Carried At Fair Value) (Details)", "role": "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "shortName": "Fair Value Disclosures (Carrying Value And Fair Value Of The Financial Instruments That Are Not Recognized Or Are Not Carried At Fair Value) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsNonrecurringMember", "decimals": "-5", "lang": null, "name": "us-gaap:MortgagesHeldForSaleFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R86": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:PremiumsReceivableAtCarryingValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2408402 - Disclosure - Premiums And Accounts Receivable (Schedule Of Allowance For Uncollectible Amounts) (Details)", "role": "http://www.assurant.com/role/PremiumsAndAccountsReceivableScheduleOfAllowanceForUncollectibleAmountsDetails", "shortName": "Premiums And Accounts Receivable (Schedule Of Allowance For Uncollectible Amounts) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:PremiumsReceivableAtCarryingValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R87": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "D2017Q4Dec22", "decimals": "-5", "first": true, "lang": null, "name": "aiz:TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409402 - Disclosure - Income Taxes (Narrative) (Details)", "role": "http://www.assurant.com/role/IncomeTaxesNarrativeDetails", "shortName": "Income Taxes (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "-5", "lang": null, "name": "us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R88": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409403 - Disclosure - Income Taxes (Information About Domestic And Foreign Pre-Tax Income) (Details)", "role": "http://www.assurant.com/role/IncomeTaxesInformationAboutDomesticAndForeignPreTaxIncomeDetails", "shortName": "Income Taxes (Information About Domestic And Foreign Pre-Tax Income) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R89": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:CurrentFederalStateAndLocalTaxExpenseBenefit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409404 - Disclosure - Income Taxes (Components Of Income Tax Expense (Benefit)) (Details)", "role": "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails", "shortName": "Income Taxes (Components Of Income Tax Expense (Benefit)) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:CurrentFederalStateAndLocalTaxExpenseBenefit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R9": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:NatureOfOperations", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2101100 - Disclosure - Nature Of Operations", "role": "http://www.assurant.com/role/NatureOfOperations", "shortName": "Nature Of Operations", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:NatureOfOperations", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R90": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409405 - Disclosure - Income Taxes (Reconciliation Of Federal Income Tax Rate) (Details)", "role": "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails", "shortName": "Income Taxes (Reconciliation Of Federal Income Tax Rate) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R91": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:UnrecognizedTaxBenefits", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409406 - Disclosure - Income Taxes (Summary Of Unrecognized Tax Benefits) (Details)", "role": "http://www.assurant.com/role/IncomeTaxesSummaryOfUnrecognizedTaxBenefitsDetails", "shortName": "Income Taxes (Summary Of Unrecognized Tax Benefits) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2014Q4", "decimals": "-5", "lang": null, "name": "us-gaap:UnrecognizedTaxBenefits", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R92": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "aiz:DeferredTaxAssetsPolicyholderAndSeparateAccountReserves", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409407 - Disclosure - Income Taxes (Summary Of Deferred Tax Assets And Deferred Tax Liabilities) (Details)", "role": "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails", "shortName": "Income Taxes (Summary Of Deferred Tax Assets And Deferred Tax Liabilities) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "aiz:DeferredTaxAssetsPolicyholderAndSeparateAccountReserves", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R93": { "firstAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:OperatingLossCarryforwards", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409408 - Disclosure - Income Taxes (Summary Of Net Operating Loss Carryforwards) (Details)", "role": "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails", "shortName": "Income Taxes (Summary Of Net Operating Loss Carryforwards) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4_aiz_OperatingLossCarryforwardsExpirationPeriodsAxis_aiz_OperatingLossCarryforwardsExpirationYearsOneThruFiveMember", "decimals": "-5", "lang": null, "name": "us-gaap:OperatingLossCarryforwards", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R94": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DeferredPolicyAcquisitionCosts", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2410402 - Disclosure - Deferred Acquisition Costs (Schedule Of Deferred Acquisition Costs) (Details)", "role": "http://www.assurant.com/role/DeferredAcquisitionCostsScheduleOfDeferredAcquisitionCostsDetails", "shortName": "Deferred Acquisition Costs (Schedule Of Deferred Acquisition Costs) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2014Q4", "decimals": "-5", "lang": null, "name": "us-gaap:DeferredPolicyAcquisitionCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R95": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:Land", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2411402 - Disclosure - Property And Equipment (Components Of Property And Equipment) (Details)", "role": "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails", "shortName": "Property And Equipment (Components Of Property And Equipment) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:Land", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R96": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2412402 - Disclosure - Goodwill (Goodwill By Segment For Impairment Test) (Details)", "role": "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails", "shortName": "Goodwill (Goodwill By Segment For Impairment Test) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "lang": null, "name": "us-gaap:GoodwillForeignCurrencyTranslationGainLoss", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R97": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2016Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ValueOfBusinessAcquiredVOBA", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2413402 - Disclosure - VOBA And Other Intangible Assets (Information About VOBA) (Details)", "role": "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutVobaDetails", "shortName": "VOBA And Other Intangible Assets (Information About VOBA) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2014Q4", "decimals": "-5", "lang": null, "name": "us-gaap:ValueOfBusinessAcquiredVOBA", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R98": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AmortizationOfIntangibleAssets", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2413403 - Disclosure - VOBA And Other Intangible Assets (Narrative) (Details)", "role": "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails", "shortName": "VOBA And Other Intangible Assets (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_RangeAxis_us-gaap_MaximumMember_us-gaap_StatementBusinessSegmentsAxis_aiz_GlobalPreneedMember", "decimals": "3", "lang": null, "name": "us-gaap:InterestAccrualRateAssociatedWithAmortizationMethodOfPresentValueOfFutureInsuranceProfits", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R99": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_aiz_ValueOfBusinessAcquiredMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearOne", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2413404 - Disclosure - VOBA And Other Intangible Assets VOBA and Other Intangible Assets (Estimated Amortization of VOBA) (Details)", "role": "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails", "shortName": "VOBA And Other Intangible Assets VOBA and Other Intangible Assets (Estimated Amortization of VOBA) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_aiz_ValueOfBusinessAcquiredMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearOne", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } } }, "segmentCount": 258, "tag": { "aiz_AccountingStandardsUpdate201609StatutoryTaxWithholdingComponentMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Accounting Standards Update 2016-09 Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.", "label": "Accounting Standards Update 2016-09, Statutory Tax Withholding Component [Member]", "terseLabel": "Accounting Standards Update 2016-09" } } }, "localname": "AccountingStandardsUpdate201609StatutoryTaxWithholdingComponentMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "aiz_AdvanceRefundedOrEscrowedToMaturitySecurities": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This element represents a portion of states, municipalities and political subdivision securities that are advance refunded or escrowed-to-maturity securities ( collectively referred to as pre-refunded securities), which are securities for which an irrevocable trust has been established to fund the remaining payment of principal and interest.", "label": "Advance Refunded Or Escrowed To Maturity Securities", "terseLabel": "Advance refunded or escrowed-to-maturity securities" } } }, "localname": "AdvanceRefundedOrEscrowedToMaturitySecurities", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AgencyRelationshipsandRenewalRightsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Agency Relationships and Renewal Rights [Member]", "label": "Agency Relationships and Renewal Rights [Member]", "terseLabel": "Agency relationships and renewal rights" } } }, "localname": "AgencyRelationshipsandRenewalRightsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "domainItemType" }, "aiz_AmBestBOrBMinusMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "AM Best B or B Minus [Member]", "label": "Am Best B Or B Minus [Member]", "terseLabel": "B or B-" } } }, "localname": "AmBestBOrBMinusMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "domainItemType" }, "aiz_AmBestBPlusPlusRatingOrBPlusMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "AM Best B Plus Plus Rating or B Plus [Member]", "label": "Am Best B Plus Plus Rating Or B Plus [Member]", "terseLabel": "B Plus Plus or B Plus" } } }, "localname": "AmBestBPlusPlusRatingOrBPlusMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "domainItemType" }, "aiz_AmBestPlusPlusRatingOrPlusMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "AM Best A Plus Plus Rating or A Plus [Member]", "label": "Am Best Plus Plus Rating Or Plus [Member]", "terseLabel": "A Plus Plus or A Plus" } } }, "localname": "AmBestPlusPlusRatingOrPlusMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "domainItemType" }, "aiz_AmBestRatingOrMinusMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "AM Best A Rating or A Minus [Member]", "label": "Am Best Rating Or Minus [Member]", "terseLabel": "A or A-" } } }, "localname": "AmBestRatingOrMinusMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "domainItemType" }, "aiz_AmericanTitleInc.Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "American Title, Inc. [Member]", "label": "American Title, Inc. [Member]", "terseLabel": "American Title, Inc." } } }, "localname": "AmericanTitleInc.Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "domainItemType" }, "aiz_AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 2.0, "parentTag": "us-gaap_BenefitsLossesAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Represents the total amortization expense with respect to capitalized deferred acquisition cost (\"DAC\") and value of business acquired (\"VOBA\") reflected in the results of operation for the period. DAC typically includes the nature of costs incurred in an acquisition, which primarily consists of commission, policy issuance costs and certain direct marketing expenses. VOBA represents the Company's present value of future profits embedded in acquired businesses (i.e. business combinations or assumption reinsurance).", "label": "Amortization of deferred acquisition costs and value of business acquired", "terseLabel": "Amortization of deferred acquisition costs and value of business acquired" } } }, "localname": "AmortizationOfDeferredAcquisitionCostsAndValueOfBusinessAcquired", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AmortizationofDeferredGainonDisposalofBusinesses": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 10.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 5.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 }, "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails": { "order": 5.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amortization of Deferred Gain on Disposal of Businesses", "label": "Amortization of Deferred Gain on Disposal of Businesses", "negatedLabel": "Amortization of deferred gain and gains on disposal of businesses", "terseLabel": "Amortization of deferred gains and gains on disposal of businesses" } } }, "localname": "AmortizationofDeferredGainonDisposalofBusinesses", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_ApproximatePercentageOutstandingPrincipalBalanceOfCommercialMortgageLoans": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "This represent the percentage of outstanding principal balance of commercial mortgage loans concentrated in the three major states.", "label": "Approximate Percentage Outstanding Principal Balance Of Commercial Mortgage Loans", "terseLabel": "Approximate percentage, outstanding principal balance of commercial mortgage loans" } } }, "localname": "ApproximatePercentageOutstandingPrincipalBalanceOfCommercialMortgageLoans", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_AsbestosandPollutionMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Asbestos and Pollution [Member]", "label": "Asbestos and Pollution [Member]", "terseLabel": "Asbestos and Pollution" } } }, "localname": "AsbestosandPollutionMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "aiz_AssetsHeldInSeparateAccountsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assets Held In Separate Accounts [Member]", "label": "Assets Held In Separate Accounts [Member]", "terseLabel": "Assets held in separate accounts" } } }, "localname": "AssetsHeldInSeparateAccountsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "aiz_AssumedGuaranteedCreditedRatesOnAnnuitiesWhenEstablishingReservesForUniversalLifeAndAnnuityProductsNoLongerOffered": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assumed guaranteed credited rates on annuities when establishing reserves for universal life and annuity products (no longer offered)", "label": "Assumed guaranteed credited rates on annuities when establishing reserves for universal life and annuity products (no longer offered)", "terseLabel": "Guaranteed crediting rate on annuities" } } }, "localname": "AssumedGuaranteedCreditedRatesOnAnnuitiesWhenEstablishingReservesForUniversalLifeAndAnnuityProductsNoLongerOffered", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_AssurantEmployeeBenefitsAEBMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assurant Employee Benefits (AEB)", "label": "Assurant Employee Benefits (AEB) [Member]", "terseLabel": "Employee Benefits", "verboseLabel": "Assurant Employee Benefits" } } }, "localname": "AssurantEmployeeBenefitsAEBMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "aiz_AssurantEmployeeBenefitsandAssurantHealthMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assurant Employee Benefits and Assurant Health [Member]", "label": "Assurant Employee Benefits and Assurant Health [Member]", "verboseLabel": "Disposed short-duration insurance lines (AEB and AH)" } } }, "localname": "AssurantEmployeeBenefitsandAssurantHealthMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "aiz_AssurantHealth1Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assurant Health1 [Member]", "label": "Assurant Health1 [Member]", "terseLabel": "Health", "verboseLabel": "Assurant Health" } } }, "localname": "AssurantHealth1Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "aiz_AssurantHealthSupplementalandSmallGroupSelfFundedLineofBusinessMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assurant Health Supplemental and Small-Group Self-Funded Line of Business [Member]", "label": "Assurant Health Supplemental and Small-Group Self-Funded Line of Business [Member]", "terseLabel": "AH", "verboseLabel": "Assurant Health Supplemental and Small-Group Self-Funded Line of Business" } } }, "localname": "AssurantHealthSupplementalandSmallGroupSelfFundedLineofBusinessMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "aiz_AuthorizedControlLevel": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Minimum capital required before the insurance commissioner of the Company's state of domicile is authorized to take control of the company to protect the interests of policyholders.", "label": "Authorized Control Level", "terseLabel": "Authorized control level" } } }, "localname": "AuthorizedControlLevel", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesPercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The percentage of gross unrealized losses that have been in a loss position for less than twelve months for available for sale securities.", "label": "Available For Sale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses Percentage", "terseLabel": "Percentage of gross unrealized losses in a continuous loss position less than twelve months" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesPercentage", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityFairValueTotal": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Available For Sale Securities Debt Maturities Contractual Maturity Fair Value Total", "label": "Available For Sale Securities Debt Maturities Contractual Maturity Fair Value Total", "totalLabel": "Total fixed maturity securities, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityFairValueTotal", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Available For Sale Securities Debt Maturities Contractual Maturity Total", "label": "Available For Sale Securities Debt Maturities Contractual Maturity Total", "totalLabel": "Total fixed maturity securities, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterFiveThroughTenYearsAmortizedCost": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails": { "order": 3.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDateAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at cost, net of adjustments, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.", "label": "Available For Sale Securities Debt Maturities In Unrealized Loss Position After Five Through Ten Years Amortized Cost", "terseLabel": "Due after five years through ten years, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterFiveThroughTenYearsAmortizedCost", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterFiveThroughTenYearsFairValue": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails": { "order": 3.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDate", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at fair value maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year.", "label": "Due after five years through ten years, Fair Value", "terseLabel": "Due after five years through ten years, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterFiveThroughTenYearsFairValue", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterOneThroughFiveYearsAmortizedCost": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails": { "order": 2.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDateAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at cost, net of adjustments, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.", "label": "Due after one year through five years, Cost or Amortized Cost", "terseLabel": "Due after one year through five years, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterOneThroughFiveYearsAmortizedCost", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterOneThroughFiveYearsFairValue": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails": { "order": 2.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDate", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at fair value maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year.", "label": "Due after one year through five years, Fair Value", "terseLabel": "Due after one year through five years, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterOneThroughFiveYearsFairValue", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterTenYearsAmortizedCost": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails": { "order": 4.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDateAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at cost, net of adjustments, maturing after the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.", "label": "Due after ten years, Cost or Amortized Cost", "terseLabel": "Due after ten years, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterTenYearsAmortizedCost", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterTenYearsFairValue": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails": { "order": 4.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDate", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at fair value maturing after the tenth fiscal year following the latest fiscal year.", "label": "Due after ten years, Fair Value", "terseLabel": "Due after ten years, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAfterTenYearsFairValue", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAmortizedCost": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at cost, net of adjustments, which include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.", "label": "Total, Cost or Amortized Cost", "terseLabel": "Total, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionAmortizedCost", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDate": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in available-for-sale debt securities in an unrealized loss position with a single maturity date.", "label": "Total Single Maturity Date, Fair Value", "totalLabel": "Total single maturity date, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDate", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDateAmortizedCostBasis": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in available-for-sale debt securities in an unrealized loss position with a single maturity date at cost, after adjustments, including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in the statement of income and fair value hedge accounting adjustments.", "label": "Total Single Maturity Date, Cost or Amortized Cost", "totalLabel": "Total single maturity date, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDateAmortizedCostBasis", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithinOneYearAmortizedCost": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails": { "order": 1.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDateAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at cost, net of adjustments, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.", "label": "Due in one year or less, Cost or Amortized Cost", "terseLabel": "Due in one year or less, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithinOneYearAmortizedCost", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithinOneYearFairValue": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails": { "order": 1.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionSingleMaturityDate", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at fair value maturing in the next fiscal year following the latest fiscal year.", "label": "Due in one year or less, Fair Value", "terseLabel": "Due in one year or less, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithinOneYearFairValue", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithoutSingleMaturityDateAmortizedCost": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at cost, net of adjustments, that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the cost over several maturity groupings. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.", "label": "Cost or Amortized Cost", "terseLabel": "Cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithoutSingleMaturityDateAmortizedCost", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithoutSingleMaturityDateFairValue": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities in an unrealized loss position at fair value that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the fair value over several maturity groupings.", "label": "Fair Value", "terseLabel": "Fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesInUnrealizedLossPositionWithoutSingleMaturityDateFairValue", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtSecuritiesInUnrealizedLossPosition": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of debt securities in an unrealized loss position categorized neither as held-to-maturity nor trading.", "label": "Total, Fair Value", "terseLabel": "Total, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtSecuritiesInUnrealizedLossPosition", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesGrossUnrealizedLossesPercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The percentage of total gross unrealized losses to the aggregate fair value of the related available-for-sale securities.", "label": "Available For Sale Securities Gross Unrealized Losses Percentage", "terseLabel": "Percentage of securities representing gross unrealized losses" } } }, "localname": "AvailableForSaleSecuritiesGrossUnrealizedLossesPercentage", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_AveragePeriodOfTimeTheseSecuritiesTradedContinuouslyAtPriceBelowBookValue": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Average period of time these securities traded continuously at a price below book value", "label": "Average Period Of Time These Securities Traded continuously At A Price Below Book Value", "terseLabel": "Securities traded continuously at a price below book value, months" } } }, "localname": "AveragePeriodOfTimeTheseSecuritiesTradedContinuouslyAtPriceBelowBookValue", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_BenefitsPaidIncludingAdministrativeExpenses": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Benefits paid (including administrative expenses)", "label": "Benefits paid (including administrative expenses)", "negatedTerseLabel": "Benefits paid (including administrative expenses)" } } }, "localname": "BenefitsPaidIncludingAdministrativeExpenses", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BenefitsPercentageOfAmountAssumedToNet": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Benefits, Percentage of amount assumed to net", "label": "Benefits, Percentage of amount assumed to net", "terseLabel": "Benefits, percentage of amount assumed to net" } } }, "localname": "BenefitsPercentageOfAmountAssumedToNet", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "percentItemType" }, "aiz_BusinessCombinationEarnout": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Earn-out", "label": "Business Combination, Earn-out", "terseLabel": "Potential earn-out (up to)" } } }, "localname": "BusinessCombinationEarnout", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentGoodwill": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Goodwill", "label": "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Goodwill", "terseLabel": "Adjusted goodwill balance" } } }, "localname": "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentGoodwill", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_CanadianGovernmentProvincialsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Canadian Government Provincials [Member]", "label": "Canadian Government Provincials [Member]", "terseLabel": "Canadian Government/Provincials" } } }, "localname": "CanadianGovernmentProvincialsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_CapitalContributionToSubsidiaries": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Capital Contribution To Subsidiaries", "label": "Capital Contribution To Subsidiaries", "negatedTerseLabel": "Capital contributed to subsidiaries" } } }, "localname": "CapitalContributionToSubsidiaries", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "aiz_CashAndCashEquivalentsShortTermInvestmentFundsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Cash And Cash Equivalents Short-Term Investment Funds [Member]", "label": "Cash And Cash Equivalents Short Term Investment Funds [Member]", "terseLabel": "Short-term investment funds" } } }, "localname": "CashAndCashEquivalentsShortTermInvestmentFundsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "domainItemType" }, "aiz_CashIncludedinHeldforSaleAssets": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Cash Included in Held for Sale Assets", "label": "Cash Included in Held for Sale Assets", "terseLabel": "Cash included in held for sale assets" } } }, "localname": "CashIncludedinHeldforSaleAssets", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "aiz_Cashconsiderationforproposedmergerhighendoftherange": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The high end of the range of cash consideration for the proposed merger pursuant to collar mechanism set forth in the Amended and Restated Merger Agreement.", "label": "Cash consideration for proposed merger, high end of the range", "terseLabel": "Cash consideration for proposed merger, high end of the range" } } }, "localname": "Cashconsiderationforproposedmergerhighendoftherange", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_Cashconsiderationforproposedmergerlowendoftherange": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The low end of the range of cash consideration for the proposed merger pursuant to collar mechanism set forth in the Amended and Restated Merger Agreement.", "label": "Cash consideration for proposed merger, low end of the range", "terseLabel": "Cash consideration for proposed merger, low end of the range" } } }, "localname": "Cashconsiderationforproposedmergerlowendoftherange", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_CededClaimsAndBenefitsPayableMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Ceded Claims And Benefits Payable [Member]", "label": "Ceded Claims And Benefits Payable [Member]", "terseLabel": "Ceded claims and benefits payable" } } }, "localname": "CededClaimsAndBenefitsPayableMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceReinsuranceRecoverableDetails", "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "domainItemType" }, "aiz_CededFuturePolicyholderBenefitsAndExpenseMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Ceded Future Policyholder Benefits And Expense [Member]", "label": "Ceded Future Policyholder Benefits And Expense [Member]", "terseLabel": "Ceded future policyholder benefits and expense" } } }, "localname": "CededFuturePolicyholderBenefitsAndExpenseMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceReinsuranceRecoverableDetails", "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "domainItemType" }, "aiz_CededPaidLossesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Ceded Paid Losses [Member]", "label": "Ceded Paid Losses [Member]", "terseLabel": "Ceded paid losses" } } }, "localname": "CededPaidLossesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceReinsuranceRecoverableDetails", "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "domainItemType" }, "aiz_CededToU.S.GovernmentMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Ceded To U.S. Government [Member]", "label": "Ceded To U.S. Government [Member]", "terseLabel": "Ceded To U.S. Government" } } }, "localname": "CededToU.S.GovernmentMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "aiz_CededUnearnedPremiumsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Ceded Unearned Premiums [Member]", "label": "Ceded Unearned Premiums [Member]", "terseLabel": "Ceded unearned premium" } } }, "localname": "CededUnearnedPremiumsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceReinsuranceRecoverableDetails", "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "domainItemType" }, "aiz_ChangeInDeferredAcquisitionCostsAndValueOfBusinessAcquired": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net change during the reporting period of capitalized sales costs that are associated with acquiring new insurance customers and expected future earnings from insurance contracts acquired (also known as present value of future profits).", "label": "Change In Deferred Acquisition Costs And Value Of Business Acquired", "negatedLabel": "Change in deferred acquisition costs and value of business acquired" } } }, "localname": "ChangeInDeferredAcquisitionCostsAndValueOfBusinessAcquired", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_ChangeInInsurancePolicyReservesAndExpenses": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The net change during the reporting period in the insurance reserve accounts established to account for expected but unspecified losses and associated unearned premium changes.", "label": "Change In Insurance Policy Reserves And Expenses", "terseLabel": "Change in insurance policy reserves and expenses" } } }, "localname": "ChangeInInsurancePolicyReservesAndExpenses", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_ChangeInPremiumsAndAccountsReceivable": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net change in the carrying amount during the reporting period of all premiums and other types of receivables due from other persons or entities.", "label": "Change In Premiums And Accounts Receivable", "negatedLabel": "Change in premiums and accounts receivable" } } }, "localname": "ChangeInPremiumsAndAccountsReceivable", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_CollarMechanismHighEndofRange": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The high end of the range pursuant to the collar mechanism set forth in the Amended and Restated Merger Agreement.", "label": "Collar Mechanism High End of Range", "terseLabel": "Collar Mechanism High End of Range" } } }, "localname": "CollarMechanismHighEndofRange", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "percentItemType" }, "aiz_CollarMechanismLowEndofRange": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The low end of the range pursuant to the collar mechanism set forth in the Amended and Restated Merger Agreement.", "label": "Collar Mechanism Low End of Range", "terseLabel": "Collar Mechanism Low End of Range" } } }, "localname": "CollarMechanismLowEndofRange", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "percentItemType" }, "aiz_CollateralizedLoanObligationfundsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Collateralized Loan Obligation funds [Member]", "label": "Collateralized Loan Obligation funds [Member]", "terseLabel": "Collateralized Loan Obligations" } } }, "localname": "CollateralizedLoanObligationfundsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_CommercialMortgageLoanSecuritizationMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commercial Mortgage Loan Securitization [Member]", "label": "Commercial Mortgage Loan Securitization [Member]", "terseLabel": "Commercial Mortgage Loan Securitization" } } }, "localname": "CommercialMortgageLoanSecuritizationMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_CommercialMortgageLoansOnRealEstateMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commercial Mortgage Loans On Real Estate [Member]", "label": "Commercial Mortgage Loans On Real Estate [Member]", "terseLabel": "Commercial mortgage loans on real estate" } } }, "localname": "CommercialMortgageLoansOnRealEstateMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails" ], "xbrltype": "domainItemType" }, "aiz_CommingledFundPrivateEquityMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commingled Fund - Private Equity [Member]", "label": "Commingled Fund - Private Equity [Member]", "terseLabel": "Private equity fund" } } }, "localname": "CommingledFundPrivateEquityMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails" ], "xbrltype": "domainItemType" }, "aiz_CommingledFundRealEstateMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commingled Fund - Real Estate [Member]", "label": "Commingled Fund - Real Estate [Member]", "terseLabel": "Commingled real estate fund" } } }, "localname": "CommingledFundRealEstateMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails" ], "xbrltype": "domainItemType" }, "aiz_CommingledRealEstateFundMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commingled Real Estate Fund [Member]", "label": "Commingled Real Estate Fund [Member]", "terseLabel": "Commingled real estate fund" } } }, "localname": "CommingledRealEstateFundMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_CommonStockOutstandingRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Common Stock, Outstanding [Roll Forward]", "label": "Common Stock, Outstanding [Roll Forward]", "terseLabel": "Common Stock, Outstanding [Roll Forward]" } } }, "localname": "CommonStockOutstandingRollForward", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "stringItemType" }, "aiz_ConsolidatedInvestmentEntitiesAssetsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Consolidated Investment Entities Assets [Abstract]", "label": "Consolidated Investment Entities Assets [Abstract]", "terseLabel": "Assets" } } }, "localname": "ConsolidatedInvestmentEntitiesAssetsAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "stringItemType" }, "aiz_ConsolidatedInvestmentEntitiesLiabilitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Consolidated Investment Entities Liabilities [Abstract]", "label": "Consolidated Investment Entities Liabilities [Abstract]", "terseLabel": "Liabilities" } } }, "localname": "ConsolidatedInvestmentEntitiesLiabilitiesAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "stringItemType" }, "aiz_CorporateFixedMaturityandEquitySecuritiesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Corporate Fixed Maturity and Equity Securities [Member]", "label": "Corporate Fixed Maturity and Equity Securities [Member]", "terseLabel": "Corporate Fixed Maturity and Equity Securities" } } }, "localname": "CorporateFixedMaturityandEquitySecuritiesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_CreditFacility2014Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Credit Facility 2014 [Member]", "label": "Credit Facility 2014 [Member]", "terseLabel": "2014 Credit Facility" } } }, "localname": "CreditFacility2014Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails" ], "xbrltype": "domainItemType" }, "aiz_CreditFacility2017Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Credit Facility 2017 [Member]", "label": "Credit Facility 2017 [Member]", "terseLabel": "2017 Credit Facility" } } }, "localname": "CreditFacility2017Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails" ], "xbrltype": "domainItemType" }, "aiz_CreditQualityPercentageForGrossCommercialMortgageLoans": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Credit Quality Percentage for Gross Commercial Mortgage Loans", "label": "Credit Quality Percentage for Gross Commercial Mortgage Loans", "terseLabel": "% of Gross Mortgage Loans" } } }, "localname": "CreditQualityPercentageForGrossCommercialMortgageLoans", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "percentItemType" }, "aiz_CreditedInterestRatesWhichVaryByProductAndTimeWhenFundsReceivedOnUniversalLifeFunds": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Credited interest rates, which vary by product and time when funds received, on universal life funds", "label": "Credited interest rates, which vary by product and time when funds received, on universal life funds", "terseLabel": "Crediting interest rates on universal life funds" } } }, "localname": "CreditedInterestRatesWhichVaryByProductAndTimeWhenFundsReceivedOnUniversalLifeFunds", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_CustomerandTechnologyMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Customer and Technology [Member]", "label": "Customer and Technology [Member]", "terseLabel": "Customer and Technology" } } }, "localname": "CustomerandTechnologyMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "domainItemType" }, "aiz_DebtInstrumentDiscountRateStatedPercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Debt Instrument, Discount Rate, Stated Percentage", "label": "Debt Instrument, Discount Rate, Stated Percentage", "terseLabel": "Senior notes discount rate" } } }, "localname": "DebtInstrumentDiscountRateStatedPercentage", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "percentItemType" }, "aiz_DebtServiceCoverageRatiosForCommercialMortgageLoans": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Debt-Service Coverage Ratios for Commercial Mortgage Loans", "label": "Debt-Service Coverage Ratios for Commercial Mortgage Loans", "terseLabel": "Debt-Service Coverage Ratio" } } }, "localname": "DebtServiceCoverageRatiosForCommercialMortgageLoans", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "pureItemType" }, "aiz_DeferredAcquisitionCostsPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Deferred acquisition costs [Policy Text Block]", "label": "Deferred Acquisition Costs [Policy Text Block]", "verboseLabel": "Deferred Acquisition Costs" } } }, "localname": "DeferredAcquisitionCostsPolicyTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "aiz_DeferredGainOnDisposalOfBusinesses": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 7.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The obligations arising from a disposal of business utilizing reinsurance. The gain on the disposals was deferred since the form of sale did not discharge the company's primary liability to insured's.", "label": "Deferred gain on disposal of businesses", "terseLabel": "Deferred gain on disposal of businesses" } } }, "localname": "DeferredGainOnDisposalOfBusinesses", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "aiz_DeferredGainOnDisposalOfBusinessesPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Deferred gain on disposal of businesses [Policy Text Block]", "label": "Deferred Gain On Disposal Of Businesses [Policy Text Block]", "verboseLabel": "Deferred Gain On Disposal Of Businesses" } } }, "localname": "DeferredGainOnDisposalOfBusinessesPolicyTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "aiz_DeferredTaxAssetsDeferredGainOnSaleOfBusiness": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 5.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from a gain reported for tax purposes on the disposal of a business in accordance with enacted tax laws.", "label": "Deferred Tax Assets Deferred Gain On Sale Of Business", "terseLabel": "Deferred gain on disposal of businesses" } } }, "localname": "DeferredTaxAssetsDeferredGainOnSaleOfBusiness", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DeferredTaxAssetsPolicyholderAndSeparateAccountReserves": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 1.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Deferred Tax Assets, Policyholder and Separate Account Reserves", "label": "Deferred Tax Assets, Policyholder and Separate Account Reserves", "terseLabel": "Policyholder and separate account reserves" } } }, "localname": "DeferredTaxAssetsPolicyholderAndSeparateAccountReserves", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DefinedBenefitPlanActualReturnOnPlanAssetsPercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide the benefits included in the benefit obligation.", "label": "Defined benefit plan, actual return on plan assets percentage", "terseLabel": "Percentage of actual return on plan assets" } } }, "localname": "DefinedBenefitPlanActualReturnOnPlanAssetsPercentage", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateUsedforCalculatingNetCost": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Used for Calculating Net Cost", "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Used for Calculating Net Cost", "terseLabel": "Effective discount rate for benefit obligations" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateUsedforCalculatingNetCost", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails" ], "xbrltype": "percentItemType" }, "aiz_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationInterestRate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Interest Rate", "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Interest Rate", "terseLabel": "Effective rate for interest on benefit obligations" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationInterestRate", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails" ], "xbrltype": "percentItemType" }, "aiz_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostInterestRate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Interest Rate", "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Interest Rate", "terseLabel": "Effective rate for interest on service cost" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostInterestRate", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails" ], "xbrltype": "percentItemType" }, "aiz_DefinedBenefitPlanExpectedFutureBenefitPayments": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan Expected Future Benefit Payments", "label": "Defined Benefit Plan Expected Future Benefit Payments", "totalLabel": "Total" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPayments", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DefinedBenefitPlanFairValueOfPlanAssetsNetOfInterestReceivableAndPayable": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Assets, usually stocks, bonds, and other investments, at their fair value as of the measurement date, net of interest receivable and payable.", "label": "Defined Benefit Plan Fair Value Of Plan Assets Net Of Interest Receivable And Payable", "terseLabel": "Total financial assets" } } }, "localname": "DefinedBenefitPlanFairValueOfPlanAssetsNetOfInterestReceivableAndPayable", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPost65NonReimbursementPlan": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Post 65, Non-Reimbursement Plan", "label": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Post 65, Non-Reimbursement Plan", "terseLabel": "Health care cost trend rate assumed for next year, post-65 non-reimbursement plan" } } }, "localname": "DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPost65NonReimbursementPlan", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails" ], "xbrltype": "percentItemType" }, "aiz_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPost65ReimbursementPlan": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Post 65, Reimbursement Plan", "label": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Post 65, Reimbursement Plan", "terseLabel": "Health care cost trend rate assumed for next year, post-65 reimbursement plan" } } }, "localname": "DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPost65ReimbursementPlan", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails" ], "xbrltype": "percentItemType" }, "aiz_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPost65ReimbursementPlanPrescriptions": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Post 65, Reimbursement Plan, Prescriptions", "label": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Post 65, Reimbursement Plan, Prescriptions", "terseLabel": "Health care cost trend rate assumed for next year, post-65 reimbursement plan, prescriptions" } } }, "localname": "DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPost65ReimbursementPlanPrescriptions", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails" ], "xbrltype": "percentItemType" }, "aiz_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPre65NonReimbursementPlan": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Pre 65, Non-Reimbursement Plan", "label": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Pre 65, Non-Reimbursement Plan", "terseLabel": "Health care cost trend rate assumed for next year, pre-65 non-reimbursement plan" } } }, "localname": "DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPre65NonReimbursementPlan", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails" ], "xbrltype": "percentItemType" }, "aiz_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPre65ReimbursementPlan": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Pre 65, Reimbursement Plan", "label": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed For Next Fiscal Year, Pre 65, Reimbursement Plan", "terseLabel": "Health care cost trend rate assumed for next year, pre-65 reimbursement plan" } } }, "localname": "DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYearPre65ReimbursementPlan", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails" ], "xbrltype": "percentItemType" }, "aiz_DefinedBenefitPlanYearthatRateReachesUltimateTrendRatePost65NonReimbursementPlan": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate, Post-65, Non-Reimbursement Plan", "label": "Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate, Post-65, Non-Reimbursement Plan", "terseLabel": "Year that the rate reaches the ultimate trend rate, post-65, non-reimbursement plan" } } }, "localname": "DefinedBenefitPlanYearthatRateReachesUltimateTrendRatePost65NonReimbursementPlan", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails" ], "xbrltype": "gYearItemType" }, "aiz_DefinedBenefitPlanYearthatRateReachesUltimateTrendRatePost65ReimbursementPlan": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate, Post-65, Reimbursement Plan", "label": "Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate, Post-65, Reimbursement Plan", "terseLabel": "Year that the rate reaches the ultimate trend rate, post-65, reimbursement plan" } } }, "localname": "DefinedBenefitPlanYearthatRateReachesUltimateTrendRatePost65ReimbursementPlan", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails" ], "xbrltype": "gYearItemType" }, "aiz_DefinedBenefitPlanYearthatRateReachesUltimateTrendRatePre65NonReimbursementPlan": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate, Pre-65, Non-Reimbursement Plan", "label": "Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate, Pre-65, Non-Reimbursement Plan", "terseLabel": "Year that the rate reaches the ultimate trend rate, pre-65, non-reimbursement plan" } } }, "localname": "DefinedBenefitPlanYearthatRateReachesUltimateTrendRatePre65NonReimbursementPlan", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails" ], "xbrltype": "gYearItemType" }, "aiz_DefinedBenefitPlanYearthatRateReachesUltimateTrendRatePre65ReimbursementPlan": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate, Pre-65, Reimbursement Plan", "label": "Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate, Pre-65, Reimbursement Plan", "terseLabel": "Year that the rate reaches the ultimate trend rate, pre-65, reimbursement plan" } } }, "localname": "DefinedBenefitPlanYearthatRateReachesUltimateTrendRatePre65ReimbursementPlan", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails" ], "xbrltype": "gYearItemType" }, "aiz_DefinedContributionPlanMaximumCostRecognizedPerOfferingPeriod": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Defined Contribution Plan, Maximum Cost Recognized Per Offering Period", "label": "Defined Contribution Plan, Maximum Cost Recognized Per Offering Period", "terseLabel": "Participants' maximum contribution per offering period" } } }, "localname": "DefinedContributionPlanMaximumCostRecognizedPerOfferingPeriod", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DefinedContributionPlanMaximumCostRecognizedPerYear": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Defined Contribution Plan, Maximum Cost Recognized Per Year", "label": "Defined Contribution Plan, Maximum Cost Recognized Per Year", "terseLabel": "Participants' maximum contribution per year" } } }, "localname": "DefinedContributionPlanMaximumCostRecognizedPerYear", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DisposalGroupAmortizationofDeferredGainonDisposal": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails": { "order": 3.0, "parentTag": "us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposal Group, Amortization of Deferred Gain on Disposal", "label": "Disposal Group, Amortization of Deferred Gain on Disposal", "terseLabel": "Amortization of deferred gains", "verboseLabel": "Amortization of deferred gains" } } }, "localname": "DisposalGroupAmortizationofDeferredGainonDisposal", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DisposalGroupDeferredGainandContingentConsiderationonDisposal": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposal Group, Deferred Gain and Contingent Consideration on Disposal", "label": "Disposal Group, Deferred Gain and Contingent Consideration on Disposal", "terseLabel": "Realization of contingent consideration" } } }, "localname": "DisposalGroupDeferredGainandContingentConsiderationonDisposal", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DisposalGroupNotDiscontinuedOperationEstimatedGainLossonDisposal": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposal Group, Not Discontinued Operation, Estimated Gain (Loss) on Disposal", "label": "Disposal Group, Not Discontinued Operation, Estimated Gain (Loss) on Disposal", "terseLabel": "Estimated gain (loss) on disposal" } } }, "localname": "DisposalGroupNotDiscontinuedOperationEstimatedGainLossonDisposal", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DisposalGroupNotDiscontinuedOperationGainLossonDisposalNetofTransactionCosts": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails": { "order": 1.0, "parentTag": "aiz_DisposalGroupNotDiscontinuedOperationsNetGainLossPriortoRealizedGainsonTransferredSecurities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Net of Transaction Costs", "label": "Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Net of Transaction Costs", "terseLabel": "Gain on sale of entities, net of transaction costs" } } }, "localname": "DisposalGroupNotDiscontinuedOperationGainLossonDisposalNetofTransactionCosts", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DisposalGroupNotDiscontinuedOperationGainLossonReinsurance": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails": { "order": 3.0, "parentTag": "aiz_DisposalGroupNotDiscontinuedOperationsNetGainLossPriortoRealizedGainsonTransferredSecurities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposal Group, Not Discontinued Operation, Gain (Loss) on Reinsurance", "label": "Disposal Group, Not Discontinued Operation, Gain (Loss) on Reinsurance", "terseLabel": "Loss on retroactive reinsurance component, before realized gains" } } }, "localname": "DisposalGroupNotDiscontinuedOperationGainLossonReinsurance", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DisposalGroupNotDiscontinuedOperationGainLossonReinsuranceContractsAssumed": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails": { "order": 2.0, "parentTag": "aiz_DisposalGroupNotDiscontinuedOperationsNetGainLossPriortoRealizedGainsonTransferredSecurities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposal Group, Not Discontinued Operation, Gain (Loss) on Reinsurance Contracts Assumed", "label": "Disposal Group, Not Discontinued Operation, Gain (Loss) on Reinsurance Contracts Assumed", "terseLabel": "Novations, resulting in recognized gains" } } }, "localname": "DisposalGroupNotDiscontinuedOperationGainLossonReinsuranceContractsAssumed", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DisposalGroupNotDiscontinuedOperationsNetGainLossPriortoRealizedGainsonTransferredSecurities": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails": { "order": 1.0, "parentTag": "us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposal Group, Not Discontinued Operations, Net Gain (Loss) Prior to Realized Gains on Transferred Securities", "label": "Disposal Group, Not Discontinued Operations, Net Gain (Loss) Prior to Realized Gains on Transferred Securities", "totalLabel": "Net loss prior to realized gains on transferred securities supporting retroactive component" } } }, "localname": "DisposalGroupNotDiscontinuedOperationsNetGainLossPriortoRealizedGainsonTransferredSecurities", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DisposalGroupNotDiscontinuedOperationsRealizedGainonTransferredInvestments": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails": { "order": 2.0, "parentTag": "us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposal Group, Not Discontinued Operations, Realized Gain on Transferred Investments", "label": "Disposal Group, Not Discontinued Operations, Realized Gain on Transferred Investments", "terseLabel": "Realized gains on transferred securities supporting retroactive component" } } }, "localname": "DisposalGroupNotDiscontinuedOperationsRealizedGainonTransferredInvestments", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DisposalgroupNotDiscontinuedOperationContingentLiability": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposal group, Not Discontinued Operation, Contingent Liability", "label": "Disposal group, Not Discontinued Operation, Contingent Liability", "terseLabel": "Contingent liability related to disposal" } } }, "localname": "DisposalgroupNotDiscontinuedOperationContingentLiability", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DocumentAndEntityInformationAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Document And Entity Information Abstract", "label": "Document And Entity Information [Abstract]" } } }, "localname": "DocumentAndEntityInformationAbstract", "nsuri": "http://www.assurant.com/20171231", "xbrltype": "stringItemType" }, "aiz_EffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Effect Of Reinsurance On Premiums Earned And Benefits Incurred [Table Text Block]", "label": "Effect Of Reinsurance On Premiums Earned And Benefits Incurred [Table Text Block]", "terseLabel": "Effect Of Reinsurance On Premiums Earned And Benefits Incurred" } } }, "localname": "EffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredTableTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceTables" ], "xbrltype": "textBlockItemType" }, "aiz_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseHealthInsurerPercent": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails": { "order": 5.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Health Insurer, Percent", "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Health Insurer, Percent", "terseLabel": "Non-deductible health insurer fee" } } }, "localname": "EffectiveIncomeTaxRateReconciliationNondeductibleExpenseHealthInsurerPercent", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "aiz_EffectiveIncomeTaxRateReconciliationTaxBenefitForeignReorganization": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Effective Income Tax Rate Reconciliation, Tax Benefit, Foreign Reorganization", "label": "Effective Income Tax Rate Reconciliation, Tax Benefit, Foreign Reorganization", "terseLabel": "Tax benefit related to international reorganization" } } }, "localname": "EffectiveIncomeTaxRateReconciliationTaxBenefitForeignReorganization", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "aiz_EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails": { "order": 9.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Percent", "label": "Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Percent", "terseLabel": "Tax reform deferred revaluation" } } }, "localname": "EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "aiz_EffectiveIncomeTaxRateReconciliationTaxExemptInterest": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails": { "order": 2.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": -1.0 } }, "lang": { "en-US": { "role": { "documentation": "Effective Income Tax Rate Reconciliation, Tax Exempt Interest", "label": "Effective Income Tax Rate Reconciliation, Tax Exempt Interest", "negatedTerseLabel": "Non-taxable investment income" } } }, "localname": "EffectiveIncomeTaxRateReconciliationTaxExemptInterest", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "aiz_EmployeeStockPurchasePlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Employee Stock Purchase Plan [Member]", "label": "Employee Stock Purchase Plan [Member]", "terseLabel": "Employee Stock Purchase Plan" } } }, "localname": "EmployeeStockPurchasePlanMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails" ], "xbrltype": "domainItemType" }, "aiz_EmployeeStockPurchaseProgramMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Employee Stock Purchase Program", "label": "Employee Stock Purchase Program [Member]", "terseLabel": "ESPP" } } }, "localname": "EmployeeStockPurchaseProgramMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "domainItemType" }, "aiz_EnergySectorMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Energy Sector [Member]", "label": "Energy Sector [Member]", "terseLabel": "Energy Sector" } } }, "localname": "EnergySectorMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_EquityInvestmentsInSubsidiaries": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 1.0, "parentTag": "us-gaap_Investments", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Equity Investments In Subsidiaries", "label": "Equity Investments In Subsidiaries", "terseLabel": "Equity investment in subsidiaries" } } }, "localname": "EquityInvestmentsInSubsidiaries", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "aiz_EquitySecuritiesCommonCollectiveTrustForeignListedMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Equity Securities Common/Collective Trust- Foreign Listed [Member]", "label": "Equity Securities Common Collective Trust Foreign Listed [Member]", "terseLabel": "Common/collective trust- foreign listed" } } }, "localname": "EquitySecuritiesCommonCollectiveTrustForeignListedMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_EquitySecuritiesCommonStockUSListedSmallCapMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Equity Securities Common Stock- U.S. Listed Small Cap [Member]", "label": "Equity Securities Common Stock U S Listed Small Cap [Member]", "terseLabel": "Common stock- U.S. listed small cap" } } }, "localname": "EquitySecuritiesCommonStockUSListedSmallCapMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "domainItemType" }, "aiz_EquitySecuritiesMutualFundUSListedLargeCapMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Equity Securities Mutual Fund- U.S. Listed Large Cap [Member]", "label": "Equity Securities Mutual Fund U S Listed Large Cap [Member]", "terseLabel": "Mutual funds- U.S. listed large cap" } } }, "localname": "EquitySecuritiesMutualFundUSListedLargeCapMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "domainItemType" }, "aiz_ExpectedAmortizationExpenseofEndingPresentValueofFutureInsuranceProfitsThereafter": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Expected Amortization Expense of Ending Present Value of Future Insurance Profits, Thereafter", "label": "Expected Amortization Expense of Ending Present Value of Future Insurance Profits, Thereafter", "terseLabel": "Thereafter" } } }, "localname": "ExpectedAmortizationExpenseofEndingPresentValueofFutureInsuranceProfitsThereafter", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "monetaryItemType" }, "aiz_ExpectedBusinessAcquisitionEnterpriseValueAssigned": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Expected Business Acquisition, Enterprise Value Assigned", "label": "Expected Business Acquisition, Enterprise Value Assigned", "terseLabel": "Enterprise value assigned to transaction" } } }, "localname": "ExpectedBusinessAcquisitionEnterpriseValueAssigned", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_ExpectedBusinessAcquisitionEquityInterestIssuedorIssuableNumberofShares": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Expected number of shares of equity interests issued or issuable to acquire entity.", "label": "Expected Business Acquisition, Equity Interest Issued or Issuable, Number of Shares", "terseLabel": "Shares issued to acquire business" } } }, "localname": "ExpectedBusinessAcquisitionEquityInterestIssuedorIssuableNumberofShares", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "sharesItemType" }, "aiz_ExpectedBusinessAcquisitionEquityInterestIssuedorIssuableValueAssigned": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Expected value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.", "label": "Expected Business Acquisition, Equity Interest Issued or Issuable, Value Assigned", "terseLabel": "Equity value assigned to transaction" } } }, "localname": "ExpectedBusinessAcquisitionEquityInterestIssuedorIssuableValueAssigned", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_ExpectedBusinessAcquisitionPercentageofVotingInterestsAcquired": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Expected percentage of voting equity interests acquired at the acquisition date in the business combination.", "label": "Expected Business Acquisition, Percentage of Voting Interests Acquired", "verboseLabel": "Approximate percent of Assurant outstanding common stock" } } }, "localname": "ExpectedBusinessAcquisitionPercentageofVotingInterestsAcquired", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "percentItemType" }, "aiz_ExpectedBusinessCombinationConsiderationTransferredLiabilitiesIncurred": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Expected amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.", "label": "Expected Business Combination, Consideration Transferred, Liabilities Incurred", "terseLabel": "Debt acquired in acquisition" } } }, "localname": "ExpectedBusinessCombinationConsiderationTransferredLiabilitiesIncurred", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityGainLossIncludedInEarnings": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Level 3 Gain (Loss) included in Earnings, Net", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Gain (Loss) included in Earnings", "terseLabel": "Total (losses) gains (realized/unrealized) included in earnings, net" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityGainLossIncludedInEarnings", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "aiz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityGainLossIncludedInOtherComprehensiveIncome": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, net unrealized gains (losses) included in stockholders' equity, net", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Gain (Loss) included in Other Comprehensive Income", "terseLabel": "Net unrealized gains (losses) included in other comprehensive income" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityGainLossIncludedInOtherComprehensiveIncome", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "aiz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitySales": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Sales, net", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Sales", "negatedTerseLabel": "Sales, net" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitySales", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "aiz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityTransfersIntoLevel3": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Transfers into Level 3, net", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Transfers Into Level 3", "terseLabel": "Transfers into Level 3, net" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityTransfersIntoLevel3", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "aiz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityTransfersOutOfLevel3": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Transfers out of Level 3, Net", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Transfers out of Level 3", "negatedLabel": "Transfers out of Level 3, net" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityTransfersOutOfLevel3", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "aiz_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityValue": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair Value measured on recurring basis, unobservable input reconciliation, net balance.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Value", "periodEndLabel": "Balance, end of period, net", "periodStartLabel": "Balance, beginning of period, net" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityValue", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "aiz_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisAssetAndLiabilityPurchases": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Asset and Liability Value", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Asset and Liability Purchases", "terseLabel": "Purchases, net" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisAssetAndLiabilityPurchases", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "aiz_FeesAndOtherIncomePolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fees and other income [Policy Text Block]", "label": "Fees And Other Income [Policy Text Block]", "verboseLabel": "Fees And Other Income" } } }, "localname": "FeesAndOtherIncomePolicyTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "aiz_FixedMaturityCommunicationsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fixed Maturity Communications [Member]", "label": "Fixed Maturity Communications [Member]", "terseLabel": "Fixed Maturity Communications" } } }, "localname": "FixedMaturityCommunicationsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_FixedMaturityConsumerNonCyclicalIndustryMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fixed maturity securities in the consumer non-cyclical industry", "label": "Fixed Maturity Consumer Non Cyclical Industry [Member]", "terseLabel": "Fixed Maturity Consumer Non Cyclical Industry" } } }, "localname": "FixedMaturityConsumerNonCyclicalIndustryMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_FixedMaturityFinancialMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fixed Maturity Financial [Member]", "label": "Fixed Maturity Financial [Member]", "terseLabel": "Fixed Maturity Financial" } } }, "localname": "FixedMaturityFinancialMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_FixedMaturitySecuritiesCorporateUSAndForeignHighYieldMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fixed Maturity Securities Corporate- U.S And Foreign High Yield [Member]", "label": "Fixed Maturity Securities Corporate U S And Foreign High Yield [Member]", "terseLabel": "Corporate- U.S. & foreign high yield" } } }, "localname": "FixedMaturitySecuritiesCorporateUSAndForeignHighYieldMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "domainItemType" }, "aiz_FixedMaturitySecuritiesCorporateUSAndForeignInvestmentGradeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fixed Maturity Securities Corporate- U.S And Foreign Investment Grade [Member]", "label": "Fixed Maturity Securities Corporate U S And Foreign Investment Grade [Member]", "terseLabel": "Corporate- U.S. & foreign investment grade" } } }, "localname": "FixedMaturitySecuritiesCorporateUSAndForeignInvestmentGradeMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "domainItemType" }, "aiz_FixedMaturitySecuritiesUSAndForeignGovernmentAndGovernmentAgenciesAndAuthoritiesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fixed Maturity Securities U.S. And Foreign Government And Government Agencies And Authorities [Member]", "label": "Fixed Maturity Securities U S And Foreign Government And Government Agencies And Authorities [Member]", "terseLabel": "U.S. & foreign government and government agencies and authorities" } } }, "localname": "FixedMaturitySecuritiesUSAndForeignGovernmentAndGovernmentAgenciesAndAuthoritiesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "domainItemType" }, "aiz_FixedMaturityandEquitySecuritiesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fixed Maturity and Equity Securities [Member]", "label": "Fixed Maturity and Equity Securities [Member]", "terseLabel": "Fixed Maturity and Equity Securities" } } }, "localname": "FixedMaturityandEquitySecuritiesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_ForfeitureRate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Forfeiture rate", "label": "Forfeiture rate", "terseLabel": "Forfeiture rate" } } }, "localname": "ForfeitureRate", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_GlobalConnectedLivingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Global Connected Living [Member]", "label": "Global Connected Living [Member]", "terseLabel": "Global connected living (mobile and service contracts)" } } }, "localname": "GlobalConnectedLivingMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "aiz_GlobalHousingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Global Housing [Member]", "label": "Global Housing [Member]", "terseLabel": "Global Housing" } } }, "localname": "GlobalHousingMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails", "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails", "http://www.assurant.com/role/ReservesTables", "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "aiz_GlobalIndemnityGroupInc.Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Global Indemnity Group Inc. [Member]", "label": "Global Indemnity Group Inc. [Member]", "terseLabel": "Global Indemnity Group Inc." } } }, "localname": "GlobalIndemnityGroupInc.Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "aiz_GlobalLifestyleMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Global Lifestyle [Member]", "label": "Global Lifestyle [Member]", "terseLabel": "Global Lifestyle" } } }, "localname": "GlobalLifestyleMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails", "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails", "http://www.assurant.com/role/ReservesTables", "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "aiz_GlobalPreneedMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Global Preneed [Member]", "label": "Global Preneed [Member]", "terseLabel": "Global Preneed" } } }, "localname": "GlobalPreneedMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_GlobalVehicleProtectionServicesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Global Vehicle Protection Services [Member]", "label": "Global Vehicle Protection Services [Member]", "terseLabel": "Global vehicle protection services" } } }, "localname": "GlobalVehicleProtectionServicesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "aiz_GovernmentsOfBrazilMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Governments Of Brazil [Member]", "label": "Governments Of Brazil [Member]", "terseLabel": "Governments Of Brazil" } } }, "localname": "GovernmentsOfBrazilMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_GovernmentsOfGermanyMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Governments Of Germany [Member]", "label": "Governments Of Germany [Member]", "terseLabel": "Governments Of Germany" } } }, "localname": "GovernmentsOfGermanyMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_GreenTreeInsuranceAgencyInc.Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Green Tree Insurance Agency, Inc. [Member]", "label": "Green Tree Insurance Agency, Inc. [Member]", "terseLabel": "Green Tree" } } }, "localname": "GreenTreeInsuranceAgencyInc.Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "domainItemType" }, "aiz_GuarantyExpense": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Guaranty Expense", "label": "Guaranty Expense", "terseLabel": "Guaranty Expense" } } }, "localname": "GuarantyExpense", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_HartfordMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Hartford [Member]", "label": "Hartford [Member]", "terseLabel": "Hartford" } } }, "localname": "HartfordMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_IDCMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "IDC [Member]", "label": "IDC [Member]", "terseLabel": "IDC" } } }, "localname": "IDCMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_IbisReLtdAgreementNumberFourMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Ibis Re Ltd. Agreement Number Four [Member]", "label": "Ibis Re Ltd Agreement Number Four [Member]", "terseLabel": "June 26, 2013 Ibis Re II Ltd. Agreement" } } }, "localname": "IbisReLtdAgreementNumberFourMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Income loss from continuing operations before provision for income taxes per share, basic", "label": "Income Loss From Continuing Operations Before Provision For Income Taxes Per Share, Basic", "terseLabel": "Income before provision for income taxes, basic (in dollars per share)" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareBasic", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsOfOperationsDetails" ], "xbrltype": "perShareItemType" }, "aiz_IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareDiluted": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "income loss from continuing operations before provision for income taxes per share, diluted", "label": "Income Loss From Continuing Operations Before Provision For Income Taxes Per Share, Diluted", "terseLabel": "Income before provision for income taxes, diluted (in dollars per share)" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeProvisionForIncomeTaxesPerShareDiluted", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsOfOperationsDetails" ], "xbrltype": "perShareItemType" }, "aiz_IncomeLossOnSaleOfRealEstateJointVentures": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 15.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Income (loss) on sale of real estate joint ventures", "label": "Income (loss) on sale of real estate joint ventures", "negatedLabel": "Income from real estate joint ventures" } } }, "localname": "IncomeLossOnSaleOfRealEstateJointVentures", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_InvestingActivitiesConsolidatedInvestmentEntitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investing Activities, Consolidated Investment Entities [Abstract]", "label": "Investing Activities, Consolidated Investment Entities [Abstract]", "terseLabel": "Consolidated investment entities:" } } }, "localname": "InvestingActivitiesConsolidatedInvestmentEntitiesAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "aiz_InvestmentFundsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investment Funds [Member]", "label": "Investment Funds [Member]", "terseLabel": "Alternative investment fund:" } } }, "localname": "InvestmentFundsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_InvestmentHedgingConcentrationRiskMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investment Hedging Concentration Risk [Member]", "label": "Investment Hedging Concentration Risk [Member]", "terseLabel": "Investment Hedging Concentration Risk" } } }, "localname": "InvestmentHedgingConcentrationRiskMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_InvestmentManagementFeesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investment Management Fees [Member]", "label": "Investment Management Fees [Member]", "terseLabel": "Investment management fees" } } }, "localname": "InvestmentManagementFeesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails" ], "xbrltype": "domainItemType" }, "aiz_InvestmentSectorConcentrationRiskMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investment Sector Concentration Risk [Member]", "label": "Investment Sector Concentration Risk [Member]", "terseLabel": "Investment Sector Concentration Risk" } } }, "localname": "InvestmentSectorConcentrationRiskMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_JohnHancockMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "John Hancock [Member]", "label": "John Hancock [Member]", "terseLabel": "John Hancock" } } }, "localname": "JohnHancockMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_JpMorganChaseBankNAndBankOfAmericaNMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "JP Morgan Chase Bank, N.A. and Bank of America, N.A [Member]", "label": "Jp Morgan Chase Bank N And Bank Of America N [Member]", "terseLabel": "JP Morgan Chase Bank, N.A. and Bank of America, N.A" } } }, "localname": "JpMorganChaseBankNAndBankOfAmericaNMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "domainItemType" }, "aiz_LargestReinsuranceRecoverableBalancesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Total reinsurance recoverable balances for reinsurers with the largest reinsurance recoverable balances.", "label": "Largest Reinsurance Recoverable Balances [Member]", "terseLabel": "Largest Reinsurance Recoverable Balances" } } }, "localname": "LargestReinsuranceRecoverableBalancesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_LenderPlacedInsuranceMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Lender-Placed Insurance [Member]", "label": "Lender-Placed Insurance [Member]", "terseLabel": "Lender-placed insurance" } } }, "localname": "LenderPlacedInsuranceMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "aiz_LenderPlacedInsuranceRateRefilePeriod": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Lender-Placed Insurance Rate, Re-file Period", "label": "Lender-Placed Insurance Rate, Re-file Period", "terseLabel": "Re-file period for lender-placed insurance rates" } } }, "localname": "LenderPlacedInsuranceRateRefilePeriod", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_LengthOfAveragingMethodUsedToDetermineMarketRelatedValueOfPlanAssets": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Length of the averaging method used to determine the market-related value of plan assets", "label": "Length of averaging method used to determine the market-related value of plan assets", "terseLabel": "Length of averaging method" } } }, "localname": "LengthOfAveragingMethodUsedToDetermineMarketRelatedValueOfPlanAssets", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_LiabilitiesRelatedToSeparateAccountsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Liabilities Related To Separate Accounts [Member]", "label": "Liabilities Related To Separate Accounts [Member]", "terseLabel": "Liabilities related to separate accounts" } } }, "localname": "LiabilitiesRelatedToSeparateAccountsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "aiz_LifeCompaniesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Life companies [Member]", "label": "Life Companies [Member]", "terseLabel": "L&H companies", "verboseLabel": "Life and Health (\u201cL&H\u201d) companies" } } }, "localname": "LifeCompaniesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails" ], "xbrltype": "domainItemType" }, "aiz_LoanToValueEightyOneToNinetyFivePercentageMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loan-To-Value Eighty One To Ninety Five Percentage [Member]", "label": "Loan To Value Eighty One To Ninety Five Percentage [Member]", "terseLabel": "81 \u2013 95%" } } }, "localname": "LoanToValueEightyOneToNinetyFivePercentageMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "domainItemType" }, "aiz_LoanToValueGreaterThanNinetyFivePercentageMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loan-To-Value Greater than Ninety Five Percentage [Member]", "label": "Loan To Value Greater Than Ninety Five Percentage [Member]", "terseLabel": "Greater than 95%" } } }, "localname": "LoanToValueGreaterThanNinetyFivePercentageMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "domainItemType" }, "aiz_LoanToValueSeventyOneToEightyPercentageMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loan-To-Value Seventy One To Eighty Percentage [Member]", "label": "Loan To Value Seventy One To Eighty Percentage [Member]", "terseLabel": "71 \u2013 80%" } } }, "localname": "LoanToValueSeventyOneToEightyPercentageMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "domainItemType" }, "aiz_LoanToValueSeventyPercentageAndLessMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loan-To-Value Seventy Percentage and Less [Member]", "label": "Loan To Value Seventy Percentage And Less [Member]", "terseLabel": "70% and less" } } }, "localname": "LoanToValueSeventyPercentageAndLessMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "domainItemType" }, "aiz_LongDurationMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Long Duration [Member]", "label": "Long Duration [Member]", "terseLabel": "Long Duration" } } }, "localname": "LongDurationMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails" ], "xbrltype": "domainItemType" }, "aiz_LongTermEquityIncentivePlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Long-Term Equity Incentive Plan [Member]", "label": "Long Term Equity Incentive Plan [Member]", "terseLabel": "Long-Term Equity Incentive Plan" } } }, "localname": "LongTermEquityIncentivePlanMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "domainItemType" }, "aiz_ManufacturedHousingandOtherMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Manufactured Housing and Other [Member]", "label": "Manufactured Housing and Other [Member]", "terseLabel": "Manufactured housing and other" } } }, "localname": "ManufacturedHousingandOtherMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "aiz_MaturitiesCallsPrepaymentsAndRedemptionAvailableForSaleSecuritiesDebtAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Maturities Calls Prepayments And Redemption Available For Sale Securities Debt Abstract", "label": "Maturities Calls Prepayments And Redemption Available For Sale Securities Debt Abstract", "terseLabel": "Maturities, calls, prepayments, and scheduled redemption of:" } } }, "localname": "MaturitiesCallsPrepaymentsAndRedemptionAvailableForSaleSecuritiesDebtAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "stringItemType" }, "aiz_MaximumExposureToCreditor": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Maximum exposure to creditor", "label": "Maximum exposure to creditor", "terseLabel": "Maximum exposure to creditor" } } }, "localname": "MaximumExposureToCreditor", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_MaximumIndividualStateExposure": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Maximum exposure of any individual state included within the Company's state, municipalities and political subdivision holdings, shown as a percentage of the total investment portfolio", "label": "Maximum Individual State Exposure", "terseLabel": "Maximum individual state exposure" } } }, "localname": "MaximumIndividualStateExposure", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_MaximumNumberOfDaysForLeaveOfAbsence": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Maximum number of days for leave of absence", "label": "Maximum number of days for leave of absence", "terseLabel": "Maximum number of days for leave of absence" } } }, "localname": "MaximumNumberOfDaysForLeaveOfAbsence", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_MergerAgreementReferencePrice": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The reference Assurant stock price as set forth in the Amended and Restated Merger Agreement.", "label": "Merger Agreement Reference Price", "terseLabel": "Merger agreement reference price (in dollars per share)" } } }, "localname": "MergerAgreementReferencePrice", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "perShareItemType" }, "aiz_MortgageLoansUnfundedCommitment": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Mortgage Loans, Unfunded Commitment", "label": "Mortgage Loans, Unfunded Commitment", "verboseLabel": "Mortgage loan commitments outstanding" } } }, "localname": "MortgageLoansUnfundedCommitment", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_MortgageSolutionsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Mortgage Solutions [Member]", "label": "Mortgage Solutions [Member]", "terseLabel": "Mortgage solutions" } } }, "localname": "MortgageSolutionsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "aiz_MultiFamilyHousingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Multi-Family Housing [Member]", "label": "Multi-Family Housing [Member]", "terseLabel": "Multi-family housing" } } }, "localname": "MultiFamilyHousingMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "aiz_NationalFloodInsuranceProgramMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "National Flood Insurance Program [Member]", "label": "National Flood Insurance Program [Member]", "terseLabel": "National Flood Insurance Program" } } }, "localname": "NationalFloodInsuranceProgramMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "domainItemType" }, "aiz_NetEarnedPremiumsFeesandOtherIncome": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Net Earned Premiums, Fees, and Other Income", "label": "Net Earned Premiums, Fees, and Other Income", "verboseLabel": "Net earned premiums, fees, and other income" } } }, "localname": "NetEarnedPremiumsFeesandOtherIncome", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "monetaryItemType" }, "aiz_NonIncomeProducingMaterialInvestments": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Indicates the number of material investments of the Company that were non-income producing.", "label": "Non-income producing material investments", "terseLabel": "Non-income producing material investments" } } }, "localname": "NonIncomeProducingMaterialInvestments", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_NonTemporaryEmployeeEligibility": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Minimum duration of time for employee to be considered a non-temporary employee to be eligible for ESPP", "label": "Non temporary employee eligibility", "terseLabel": "Non temporary employee requirement (months employed)" } } }, "localname": "NonTemporaryEmployeeEligibility", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_NoncashReceivablePayableResultingfromHealthCareRegulations": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 18.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Noncash Receivable (Payable) Resulting from Health Care Regulations", "label": "Noncash Receivable (Payable) Resulting from Health Care Regulations", "terseLabel": "Changes in premium stabilization program receivables" } } }, "localname": "NoncashReceivablePayableResultingfromHealthCareRegulations", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_NoncashRevenuesExpensesGainsAndLossesConsolidatedInvestmentEntitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Noncash Revenues, Expenses, Gains, And Losses, Consolidated Investment Entities [Abstract]", "label": "Noncash Revenues, Expenses, Gains, And Losses, Consolidated Investment Entities [Abstract]", "terseLabel": "Noncash revenues, expenses, gains and losses included in income:" } } }, "localname": "NoncashRevenuesExpensesGainsAndLossesConsolidatedInvestmentEntitiesAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "aiz_NonqualifiedPlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Nonqualified Plan [Member]", "label": "Nonqualified Plan [Member]", "terseLabel": "Non-Qualified Pension Benefits" } } }, "localname": "NonqualifiedPlanMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "domainItemType" }, "aiz_NotHedgedtoU.S.DollarsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Not Hedged to U.S. Dollars [Member]", "label": "Not Hedged to U.S. Dollars [Member]", "terseLabel": "Not Hedged to U.S. Dollars" } } }, "localname": "NotHedgedtoU.S.DollarsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_NotRatedMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Not Rated [Member]", "label": "Not Rated [Member]", "verboseLabel": "Not Rated" } } }, "localname": "NotRatedMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "aiz_NumberOfAvailableForSaleSecuritiesComprisingGrossUnrealizedLoss": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of individual securities comprising the net amount of gross unrealized losses for securities, at a point in time, that are not categorized available for sale securities.", "label": "Number Of Available For Sale Securities Comprising Gross Unrealized Loss", "terseLabel": "Individual securities comprising total gross unrealized losses (in shares)" } } }, "localname": "NumberOfAvailableForSaleSecuritiesComprisingGrossUnrealizedLoss", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "integerItemType" }, "aiz_NumberOfContinuousMonthsWorked": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of continuous months worked", "label": "Number of continuous months worked", "terseLabel": "Number of continuous months worked" } } }, "localname": "NumberOfContinuousMonthsWorked", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_NumberOfYearsToMaturityForBondsInYieldCurveThatIsUtilizedInCashFlowAnalysisForPensionPlan": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of years to maturity for bonds in yield curve that is utilized in the cash flow analysis for the pension plan", "label": "Number of years to maturity for bonds in yield curve that is utilized in the cash flow analysis for the pension plan", "terseLabel": "Number of years to maturity for bonds in yield curve that is utilized in the cash flow analysis for the pension plan" } } }, "localname": "NumberOfYearsToMaturityForBondsInYieldCurveThatIsUtilizedInCashFlowAnalysisForPensionPlan", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_NumberofOfferingPeriods": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of Offering Periods", "label": "Number of Offering Periods", "terseLabel": "Number of Offering Periods" } } }, "localname": "NumberofOfferingPeriods", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "integerItemType" }, "aiz_NumberofReinsurers": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of Reinsurers", "label": "Number of Reinsurers", "terseLabel": "Number of reinsurers" } } }, "localname": "NumberofReinsurers", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails" ], "xbrltype": "integerItemType" }, "aiz_Numberofbondsinyieldcurvethatisutilizedinthecashflowanalysisforthepensionplan": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of bonds in yield curve that is utilized in the cash flow analysis for the pension plan", "label": "Number of bonds in yield curve that is utilized in the cash flow analysis for the pension plan", "terseLabel": "Number of bonds in yield curve that is utilized in the cash flow analysis for the pension plan" } } }, "localname": "Numberofbondsinyieldcurvethatisutilizedinthecashflowanalysisforthepensionplan", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "integerItemType" }, "aiz_OnePercentagePointDecreaseInHealthCareCostTrendRateAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "One Percentage Point Decrease In Health Care Cost Trend Rate [Abstract]", "label": "One Percentage Point Decrease In Health Care Cost Trend Rate [Abstract]", "terseLabel": "One percentage point decrease in health care cost trend rate" } } }, "localname": "OnePercentagePointDecreaseInHealthCareCostTrendRateAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails" ], "xbrltype": "stringItemType" }, "aiz_OnePercentagePointIncreaseInHealthCareCostTrendRateAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "One Percentage Point Increase In Health Care Cost Trend Rate [Abstract]", "label": "One Percentage Point Increase In Health Care Cost Trend Rate [Abstract]", "terseLabel": "One percentage point increase in health care cost trend rate" } } }, "localname": "OnePercentagePointIncreaseInHealthCareCostTrendRateAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails" ], "xbrltype": "stringItemType" }, "aiz_OperatingLossCarryforwardsExpirationPeriodsAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Operating Loss Carryforwards, Expiration Periods [Axis]", "label": "Operating Loss Carryforwards, Expiration Periods [Axis]", "terseLabel": "Operating Loss Carryforwards, Expiration Periods [Axis]" } } }, "localname": "OperatingLossCarryforwardsExpirationPeriodsAxis", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails" ], "xbrltype": "stringItemType" }, "aiz_OperatingLossCarryforwardsExpirationPeriodsDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Operating Loss Carryforwards, Expiration Periods [Domain]", "label": "Operating Loss Carryforwards Expiration Periods [Domain]", "terseLabel": "Operating Loss Carryforwards, Expiration Periods [Domain]" } } }, "localname": "OperatingLossCarryforwardsExpirationPeriodsDomain", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails" ], "xbrltype": "domainItemType" }, "aiz_OperatingLossCarryforwardsExpirationYearUnlimitedMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Operating Loss Carryforwards Expiration Year Unlimited [Member]", "label": "Operating Loss Carryforwards Expiration Year Unlimited [Member]", "terseLabel": "Unlimited" } } }, "localname": "OperatingLossCarryforwardsExpirationYearUnlimitedMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails" ], "xbrltype": "domainItemType" }, "aiz_OperatingLossCarryforwardsExpirationYearsFifteenThruTwentyMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Operating Loss Carryforwards Expiration Years Fifteen Thru Twenty Member", "label": "Operating Loss Carryforwards Expiration Years Fifteen Thru Twenty [Member]", "terseLabel": "2033 - 2037" } } }, "localname": "OperatingLossCarryforwardsExpirationYearsFifteenThruTwentyMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails" ], "xbrltype": "domainItemType" }, "aiz_OperatingLossCarryforwardsExpirationYearsFiveThruTenMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Operating Loss Carryforwards Expiration Years Five Thru Ten Member", "label": "Operating Loss Carryforwards Expiration Years Five Thru Ten [Member]", "terseLabel": "2023 - 2027" } } }, "localname": "OperatingLossCarryforwardsExpirationYearsFiveThruTenMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails" ], "xbrltype": "domainItemType" }, "aiz_OperatingLossCarryforwardsExpirationYearsOneThruFiveMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Operating Loss Carryforwards Expiration Years One thru Five", "label": "Operating Loss Carryforwards Expiration Years One Thru Five [Member]", "terseLabel": "2018 - 2022" } } }, "localname": "OperatingLossCarryforwardsExpirationYearsOneThruFiveMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails" ], "xbrltype": "domainItemType" }, "aiz_OperatingLossCarryforwardsExpirationYearsTenThruFifteenMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Operating Loss Carryforwards Expiration Years Ten Thru Fifteen Member", "label": "Operating Loss Carryforwards Expiration Years Ten Thru Fifteen [Member]", "terseLabel": "2028 - 2032" } } }, "localname": "OperatingLossCarryforwardsExpirationYearsTenThruFifteenMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails" ], "xbrltype": "domainItemType" }, "aiz_OtherAssetsPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other Assets [Policy Text Block]", "label": "Other Assets [Policy Text Block]", "verboseLabel": "Other Assets" } } }, "localname": "OtherAssetsPolicyTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "aiz_OtherChangesInPlanAssetsAndBenefitObligationsRecognizedInAOCIAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other Changes In Plan Assets And Benefit Obligations Recognized In AOCI [Abstract]", "label": "Other Changes In Plan Assets And Benefit Obligations Recognized In AOCI [Abstract]", "terseLabel": "Other changes in plan assets and benefit obligations recognized in accumulated other comprehensive income" } } }, "localname": "OtherChangesInPlanAssetsAndBenefitObligationsRecognizedInAOCIAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "stringItemType" }, "aiz_OtherComprehensiveIncomeLossAmortizationAdjustmentfromAOCIPensionandOtherPostretirementBenefitPlansforNetPriorServiceCostCreditandCurtailmentsSettlementsbeforeTax": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit) and Curtailments Settlements, before Tax", "label": "Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit) and Curtailments Settlements, before Tax", "negatedTerseLabel": "Amortization of prior service cost, and effects of curtailments/settlements" } } }, "localname": "OtherComprehensiveIncomeLossAmortizationAdjustmentfromAOCIPensionandOtherPostretirementBenefitPlansforNetPriorServiceCostCreditandCurtailmentsSettlementsbeforeTax", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "aiz_OtherComprehensiveIncomeLossChangeinSubsidiary": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Other Comprehensive Income (Loss), Change in Subsidiary", "label": "Other Comprehensive Income (Loss), Change in Subsidiary", "terseLabel": "Change in subsidiary other comprehensive income" } } }, "localname": "OtherComprehensiveIncomeLossChangeinSubsidiary", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "aiz_OtherCountryMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other Country [Member]", "label": "Other Country [Member]", "terseLabel": "Other Country" } } }, "localname": "OtherCountryMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_OtherLiabilitiesTypeAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other Liabilities, Type [Axis]", "label": "Other Liabilities, Type [Axis]", "terseLabel": "Other Liabilities, Type [Axis]" } } }, "localname": "OtherLiabilitiesTypeAxis", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "aiz_OtherLiabilitiesTypeDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Domain] for Other Liabilities, Type [Axis]", "label": "Other Liabilities, Type [Domain]", "terseLabel": "Other Liabilities, Type [Domain]" } } }, "localname": "OtherLiabilitiesTypeDomain", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "aiz_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesMaturedPaidDownPrepaidOrSold": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Matured Paid Down Prepaid Or Sold", "label": "Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Matured Paid Down Prepaid Or Sold", "negatedLabel": "Reductions for credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period" } } }, "localname": "OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesMaturedPaidDownPrepaidOrSold", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditLossImpairmentsRecognizedDetails" ], "xbrltype": "monetaryItemType" }, "aiz_OtherThanTemporaryImpairmentLossesPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other-than-temporary impairment losses [Policy Text Block]", "label": "Other-Than-Temporary Impairment Losses [Policy Text Block]", "verboseLabel": "Total Other-Than-Temporary Impairment Losses" } } }, "localname": "OtherThanTemporaryImpairmentLossesPolicyTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "aiz_PAndCCompaniesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "P and C companies [Member]", "label": "P And C Companies [Member]", "terseLabel": "P&C companies", "verboseLabel": "Property & Casualty (\u201cP&C\u201d) companies" } } }, "localname": "PAndCCompaniesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails" ], "xbrltype": "domainItemType" }, "aiz_PaymentsOfInvestmentsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Payments Of Investments [Abstract]", "label": "Payments Of Investments Abstract", "verboseLabel": "Purchases of:" } } }, "localname": "PaymentsOfInvestmentsAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "aiz_PaymentsToAcquireCommercialMortgageLoansOnRealEstate": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 13.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow for the purchase of commercial mortgage loans on real estate", "label": "Payments to acquire commercial mortgage loans on real estate", "negatedLabel": "Commercial mortgage loans on real estate" } } }, "localname": "PaymentsToAcquireCommercialMortgageLoansOnRealEstate", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_PaymentsofExaminationComplianceandMonitoringCosts": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Payments of Examination, Compliance, and Monitoring Costs", "label": "Payments of Examination, Compliance, and Monitoring Costs", "terseLabel": "Payments for examination, compliance, and monitoring costs" } } }, "localname": "PaymentsofExaminationComplianceandMonitoringCosts", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_PercentageOfInvestmentOfTheMostSubordinatedTrancheOfCLO": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The percentage of investment of the most subordinated tranche of the collateralized loan obligation (CLO).", "label": "Percentage Of Investment Of The Most Subordinated Tranche Of CLO", "terseLabel": "Investment percentage in most subordinated debt tranche" } } }, "localname": "PercentageOfInvestmentOfTheMostSubordinatedTrancheOfCLO", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_PercentageOfInvestmentsInForeignGovernmentsFixedMaturitySecurities": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage Of Investments In Foreign Governments Fixed Maturity Securities", "label": "Percentage Of Investments In Foreign Governments Fixed Maturity Securities", "terseLabel": "Percentage of investments in foreign governments fixed maturity securities" } } }, "localname": "PercentageOfInvestmentsInForeignGovernmentsFixedMaturitySecurities", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_PercentageOfPayoutLevelMaximum": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The maximum level of payout (150%) in shares upon the vesting of PSU's, as determined by ranking the average of the Company's three year performance with respect to three performance measures against the performance of companies included in a specific stock market index, excluding those with revenues of less than $1,000,000 or that are not in the health or insurance Global Industry Classification Standard codes.", "label": "Percentage Of Payout Level Maximum", "terseLabel": "Percentage of payout level maximum" } } }, "localname": "PercentageOfPayoutLevelMaximum", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_PercentageOfPayoutLevelMinimum": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The minimum level of payout (0%) in shares upon the vesting of PSU's, as determined by ranking the average of the Company's three year performance with respect to three performance measures against the performance of companies included in a specific stock market index, excluding those with revenues of less than $1,000,000 or that are not in the health or insurance Global Industry Classification Standard codes.", "label": "Percentage Of Payout Level Minimum", "terseLabel": "Percentage of payout level minimum" } } }, "localname": "PercentageOfPayoutLevelMinimum", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_PercentageOfPayoutLevelTarget": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The target level of payout (100%) in shares upon the vesting of PSU's, as determined by ranking the average of the Company's three year performance with respect to three performance measures against the performance of companies included in a specific stock market index, excluding those with revenues of less than $1,000,000 or that are not in the health or insurance Global Industry Classification Standard codes.", "label": "Percentage Of Payout Level Target", "terseLabel": "Percentage of payout level target" } } }, "localname": "PercentageOfPayoutLevelTarget", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_PercentageOfPensionPlanDeficitAddedToAmountOfServiceCost": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The percentage of the Pension Plan deficit that is added to the amount of service cost in order for the Company to determine additional contributions to the Pension Plan.", "label": "Percentage of Pension Plan deficit added to amount of service cost", "terseLabel": "Percentage of pension plan deficit added to amount of service cost" } } }, "localname": "PercentageOfPensionPlanDeficitAddedToAmountOfServiceCost", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_PercentageOfRevenueSecurities": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "This element represents the percentage of revenue securities within states, municipalities and political subdivisions.", "label": "Percentage Of Revenue Securities", "terseLabel": "Percentage of revenue securities" } } }, "localname": "PercentageOfRevenueSecurities", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_Plan1Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Plan 1 [Member]", "label": "Plan 1 [Member]", "terseLabel": "2017 Plan 1" } } }, "localname": "Plan1Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "domainItemType" }, "aiz_Plan2Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Plan 2 [Member]", "label": "Plan 2 [Member]", "terseLabel": "2017 Plan 2" } } }, "localname": "Plan2Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "domainItemType" }, "aiz_PolicyReservesUnderInvestmentProductsFairValueDisclosure": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesFairValueDisclosureNonrecurring", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Policy Reserves Under Investment Products, Fair Value Disclosure", "label": "Policy Reserves Under Investment Products, Fair Value Disclosure", "terseLabel": "Individual and group annuities, subject to discretionary withdrawal" } } }, "localname": "PolicyReservesUnderInvestmentProductsFairValueDisclosure", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "aiz_PremiumDeficiencyReservesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Premium Deficiency Reserves [Member]", "label": "Premium Deficiency Reserves [Member]", "terseLabel": "Premium deficiency charges" } } }, "localname": "PremiumDeficiencyReservesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_PricedInternallyMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Level 3 fixed maturity and equity securities priced internally using independent and non-binding broker quotes", "label": "Priced Internally [Member]", "terseLabel": "Priced Internally" } } }, "localname": "PricedInternallyMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_PriorYearClaimsandClaimsAdjustmentExpenseInterest": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": 2.0, "parentTag": "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Prior Year Claims and Claims Adjustment Expense, Interest", "label": "Prior Year Claims and Claims Adjustment Expense, Interest", "terseLabel": "Incurred losses and loss adjustment expenses, prior year's interest" } } }, "localname": "PriorYearClaimsandClaimsAdjustmentExpenseInterest", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "aiz_PriorYearDevelopmentofClaimsandBenefitsPayable": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Prior Year Development of Claims and Benefits Payable", "label": "Prior Year Development of Claims and Benefits Payable", "terseLabel": "Prior year development of claims and benefits payable" } } }, "localname": "PriorYearDevelopmentofClaimsandBenefitsPayable", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_PriorYearDevelopmentofClaimsandBenefitsPayableForeignExchangeRateImpact": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Prior Year Development of Claims and Benefits Payable, Foreign Exchange Rate Impact", "label": "Prior Year Development of Claims and Benefits Payable, Foreign Exchange Rate Impact", "terseLabel": "prior year development of claims and benefits payable, foreign exchange rate impact" } } }, "localname": "PriorYearDevelopmentofClaimsandBenefitsPayableForeignExchangeRateImpact", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_PriorYearDevelopmentofClaimsandBenefitsPayableIncludingForeignExchangeRateMovements": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Prior Year Development of Claims and Benefits Payable, Including Foreign Exchange Rate Movements", "label": "Prior Year Development of Claims and Benefits Payable, Including Foreign Exchange Rate Movements", "terseLabel": "Prior year development of claims and benefits payable, including foreign exchange rate movements" } } }, "localname": "PriorYearDevelopmentofClaimsandBenefitsPayableIncludingForeignExchangeRateMovements", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecuritiesDebt": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities, Debt", "label": "Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities, Debt", "terseLabel": "Fixed maturity securities available for sale" } } }, "localname": "ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecuritiesDebt", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from the maturity (principal due), prepayment and call (request of early payment) of a loan financed by commercial mortgage payments on real estate.", "label": "Proceeds from maturities, prepayments and calls of commercial mortgage loans on real estate", "terseLabel": "Commercial mortgage loans on real estate" } } }, "localname": "Proceedsfrommaturitiesprepaymentsandcallsofcommercialmortgageloansonrealestate", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_PsuMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "PSU [Member]", "label": "Psu [Member]", "terseLabel": "PSUs" } } }, "localname": "PsuMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "domainItemType" }, "aiz_PurchasesOfAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Purchases Of [Abstract]", "label": "Purchases Of [Abstract]", "terseLabel": "Purchases of:" } } }, "localname": "PurchasesOfAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "stringItemType" }, "aiz_PurchasesofInvestmentsbySpecialPurposeEntities": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 16.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow from the purchase of investments by special purpose entities.", "label": "Purchases of Investments by Special Purpose Entities", "negatedTerseLabel": "Purchases of investments" } } }, "localname": "PurchasesofInvestmentsbySpecialPurposeEntities", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_QualifiedPlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Qualified Plan [Member]", "label": "Qualified Plan [Member]", "terseLabel": "Qualified Pension Benefits" } } }, "localname": "QualifiedPlanMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "domainItemType" }, "aiz_RateOfCompensationIncreasedUnderNetPeriodicBenefitCost": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Rate Of Compensation Increased Under Net Periodic Benefit Cost", "label": "Rate Of Compensation Increased Under Net Periodic Benefit Cost", "verboseLabel": "Assumed rates of compensation increases used to determine net period benefit cost" } } }, "localname": "RateOfCompensationIncreasedUnderNetPeriodicBenefitCost", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails" ], "xbrltype": "percentItemType" }, "aiz_RealEstateCarryingAmountRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Real Estate Carrying Amount [Roll Forward]", "label": "Real Estate Carrying Amount [Roll Forward]", "terseLabel": "Real Estate Carrying Amount [Roll Forward]" } } }, "localname": "RealEstateCarryingAmountRollForward", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "stringItemType" }, "aiz_ReceivableFromSubsidiariesNet": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 3.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Receivable From Subsidiaries Net", "label": "Receivable From Subsidiaries Net", "terseLabel": "Receivable from subsidiaries, net" } } }, "localname": "ReceivableFromSubsidiariesNet", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "aiz_ReinsuranceCededandOthercasereservesandIBNR": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": 2.0, "parentTag": "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The sum for all reinsurance arrangements of the known and estimated amount recoverable as of the balance sheet date from a given reinsurer for claims paid or incurred claims not yet reported by the ceding insurer and associated claims settlement expense for each reinsurance arrangement (or, the sum of all cases determined individually, probably applying different assumptions to each arrangement).", "label": "Reinsurance Ceded and Other, case reserves and IBNR", "negatedLabel": "Less: Reinsurance ceded and other", "terseLabel": "Plus: Reinsurance ceded and other" } } }, "localname": "ReinsuranceCededandOthercasereservesandIBNR", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "aiz_ReinsuranceCoveragePeriod": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Reinsurance coverage period", "label": "Reinsurance Coverage Period", "verboseLabel": "Reinsurance coverage period (in years)" } } }, "localname": "ReinsuranceCoveragePeriod", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_ReservesPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Reserves [Policy Text Block]", "label": "Reserves [Policy Text Block]", "terseLabel": "Reserves" } } }, "localname": "ReservesPolicyTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "aiz_RestrictedStockAndRestrictedStockUnitsNetMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Restricted Stock and Restricted Stock Units, Net [Member]", "label": "Restricted Stock And Restricted Stock Units Net [Member]", "terseLabel": "Restricted Stock and Restricted Stock Units, Net" } } }, "localname": "RestrictedStockAndRestrictedStockUnitsNetMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "domainItemType" }, "aiz_RetirementPlanNameAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Retirement Plan Name [Axis]", "label": "Retirement Plan Name [Axis]", "terseLabel": "Retirement Plan Name [Axis]" } } }, "localname": "RetirementPlanNameAxis", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "stringItemType" }, "aiz_RetirementPlanNameDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Domain] for Retirement Plan Name [Axis]", "label": "Retirement Plan Name [Domain]", "terseLabel": "Retirement Plan Name [Domain]" } } }, "localname": "RetirementPlanNameDomain", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "domainItemType" }, "aiz_RetirementPlanTaxStatusAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Retirement Plan Tax Status [Axis]", "label": "Retirement Plan Tax Status [Axis]", "terseLabel": "Retirement Plan Tax Status [Axis]" } } }, "localname": "RetirementPlanTaxStatusAxis", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "stringItemType" }, "aiz_RetirementPlanTaxStatusDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Domain] for Retirement Plan Tax Status [Axis]", "label": "Retirement Plan Tax Status [Domain]", "terseLabel": "Retirement Plan Tax Status [Domain]" } } }, "localname": "RetirementPlanTaxStatusDomain", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "domainItemType" }, "aiz_RetirementPlanTypeAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Retirement Plan Type [Axis]", "label": "Retirement Plan Type [Axis]", "terseLabel": "Retirement Plan Type [Axis]" } } }, "localname": "RetirementPlanTypeAxis", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountRecognizedInConsolidatedBalanceSheetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "stringItemType" }, "aiz_RetirementPlanTypeDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Domain] for Retirement Plan Type [Axis]", "label": "Retirement Plan Type [Domain]", "terseLabel": "Retirement Plan Type [Domain]" } } }, "localname": "RetirementPlanTypeDomain", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountRecognizedInConsolidatedBalanceSheetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "domainItemType" }, "aiz_ReturnOfCapitalContributionsFromSubsidiaries": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Return Of Capital Contributions From Subsidiaries", "label": "Return Of Capital Contributions From Subsidiaries", "terseLabel": "Return of capital contributions from subsidiaries" } } }, "localname": "ReturnOfCapitalContributionsFromSubsidiaries", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "aiz_RevenueRecognitionPercentageofPriorYearRevenueinScopeofNewAccountingPronouncement": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Revenue Recognition, Percentage of Prior Year Revenue in Scope of New Accounting Pronouncement", "label": "Revenue Recognition, Percentage of Prior Year Revenue in Scope of New Accounting Pronouncement", "terseLabel": "Percentage of prior year revenue in scope of new pronouncement" } } }, "localname": "RevenueRecognitionPercentageofPriorYearRevenueinScopeofNewAccountingPronouncement", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "percentItemType" }, "aiz_RevenuesBenchmarkForPerformancePayout": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The revenue threshold for determining whether a company within a specific stock market index is included in the peer group that Assurant uses to determine our ranking with respect to PSU's.", "label": "Revenues Benchmark For Performance Payout", "terseLabel": "Revenues benchmark for performance payout (less than)" } } }, "localname": "RevenuesBenchmarkForPerformancePayout", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_RunoffPeriod": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Runoff Period", "label": "Runoff Period", "terseLabel": "Runoff period" } } }, "localname": "RunoffPeriod", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_SaleOfInvestmentsBySpecialPurposeEntities": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 17.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Sale Of Investments By Special Purpose Entities", "label": "Sale Of Investments By Special Purpose Entities", "terseLabel": "Sale of investments" } } }, "localname": "SaleOfInvestmentsBySpecialPurposeEntities", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_SalesOfAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Sales of Investing Activities", "label": "Sales of Abstract", "terseLabel": "Sales of:" } } }, "localname": "SalesOfAbstract", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "stringItemType" }, "aiz_ScheduleOfAllowanceForUncollectiblePremiumsAndAccountsReceivableTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule of allowance for uncollectible premiums and accounts receivable [Table Text Block]", "label": "Schedule Of Allowance For Uncollectible Premiums And Accounts Receivable [Table Text Block]", "verboseLabel": "Schedule Of Allowance For Uncollectible Amounts" } } }, "localname": "ScheduleOfAllowanceForUncollectiblePremiumsAndAccountsReceivableTableTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/PremiumsAndAccountsReceivableTables" ], "xbrltype": "textBlockItemType" }, "aiz_ScheduleOfFairValueHierarchyForQualifiedPensionAndOtherPostRetirementBenefitPlanAssetsTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Fair Value Hierarchy For Qualified Pension And Other Post Retirement Benefit Plan Assets [Table Text Block]", "label": "Schedule Of Fair Value Hierarchy For Qualified Pension And Other Post Retirement Benefit Plan Assets [Table Text Block]", "terseLabel": "Schedule Of Fair Value Hierarchy For Qualified Pension And Other Post Retirement Benefit Plan Assets" } } }, "localname": "ScheduleOfFairValueHierarchyForQualifiedPensionAndOtherPostRetirementBenefitPlanAssetsTableTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "aiz_ScheduleOfRatingForExistingReinsuranceTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Rating For Existing Reinsurance [Table Text Block]", "label": "Schedule Of Rating For Existing Reinsurance [Table Text Block]", "terseLabel": "Schedule Of Rating For Existing Reinsurance" } } }, "localname": "ScheduleOfRatingForExistingReinsuranceTableTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceTables" ], "xbrltype": "textBlockItemType" }, "aiz_ScheduleOfReinsuranceRecoverableTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Reinsurance Recoverable [Table Text Block]", "label": "Schedule Of Reinsurance Recoverable [Table Text Block]", "verboseLabel": "Reinsurance Recoverable" } } }, "localname": "ScheduleOfReinsuranceRecoverableTableTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceTables" ], "xbrltype": "textBlockItemType" }, "aiz_ScheduleOfWeightedAverageAssumptionsUsedCalculatingNetPeriodicBenefitCostTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Weighted Average Assumptions Used Calculating Net Periodic Benefit Cost [Table Text Block]", "label": "Schedule Of Weighted Average Assumptions Used Calculating Net Periodic Benefit Cost [Table Text Block]", "terseLabel": "Weighted-Average Assumptions Used To Determine Net Periodic Benefit Cost" } } }, "localname": "ScheduleOfWeightedAverageAssumptionsUsedCalculatingNetPeriodicBenefitCostTableTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "aiz_ScheduleOfWeightedAverageAssumptionsUsedCalculatingProjectedBenefitObligationTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Weighted Average Assumptions Used Calculating Projected Benefit Obligation [Table Text Block]", "label": "Schedule Of Weighted Average Assumptions Used Calculating Projected Benefit Obligation [Table Text Block]", "terseLabel": "Weighted-Average Assumptions Used To Determine Projected Benefit Obligation" } } }, "localname": "ScheduleOfWeightedAverageAssumptionsUsedCalculatingProjectedBenefitObligationTableTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "aiz_ScheduleofCarryingValuesandEstimatedFairValuesofAssetsTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule of Carrying Values and Estimated Fair Values of Assets [Table Text Block]", "label": "Schedule of Carrying Values and Estimated Fair Values of Assets [Table Text Block]", "terseLabel": "Schedule of carrying values of level 3 assets" } } }, "localname": "ScheduleofCarryingValuesandEstimatedFairValuesofAssetsTableTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesTables" ], "xbrltype": "textBlockItemType" }, "aiz_SellingGeneralandAdministrativeExpensePostCloseAdjustmentForEstimatedIndemnification": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Selling, General and Administrative Expense, Post-Close Adjustment For Estimated Indemnification", "label": "Selling, General and Administrative Expense, Post-Close Adjustment For Estimated Indemnification", "terseLabel": "Post-close adjustment for estimated indemnification" } } }, "localname": "SellingGeneralandAdministrativeExpensePostCloseAdjustmentForEstimatedIndemnification", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_SeniorNotes2004FirstSeriesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2004, First Series [Member]", "label": "Senior Notes2004 First Series [Member]", "terseLabel": "Senior Notes 2004, First Series" } } }, "localname": "SeniorNotes2004FirstSeriesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "domainItemType" }, "aiz_SeniorNotes2004Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2004 [Member]", "label": "Senior Notes2004 [Member]", "terseLabel": "Senior Notes 2004" } } }, "localname": "SeniorNotes2004Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "domainItemType" }, "aiz_SeniorNotes2004SecondSeriesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2004, Second Series [Member]", "label": "Senior Notes2004 Second Series [Member]", "terseLabel": "Senior Notes 2004, Second Series" } } }, "localname": "SeniorNotes2004SecondSeriesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "aiz_SeniorNotes2013FirstSeriesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2013, First Series [Member]", "label": "Senior Notes2013 First Series [Member]", "terseLabel": "Senior Notes 2013, First Series" } } }, "localname": "SeniorNotes2013FirstSeriesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "domainItemType" }, "aiz_SeniorNotes2013Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2013 [Member]", "label": "Senior Notes2013 [Member]", "terseLabel": "Senior Notes 2013" } } }, "localname": "SeniorNotes2013Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "domainItemType" }, "aiz_SeniorNotes2013SecondSeriesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2013, Second Series [Member]", "label": "Senior Notes2013 Second Series [Member]", "terseLabel": "Senior Notes 2013, Second Series" } } }, "localname": "SeniorNotes2013SecondSeriesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "domainItemType" }, "aiz_SeparateAccountsPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Separate Accounts [Policy Text Block]", "label": "Separate Accounts [Policy Text Block]", "verboseLabel": "Separate Accounts" } } }, "localname": "SeparateAccountsPolicyTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "aiz_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedAndDeferredInPeriod": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested And Deferred In Period", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested And Deferred In Period", "terseLabel": "Shares vested but deferred (shares)" } } }, "localname": "SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedAndDeferredInPeriod", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "sharesItemType" }, "aiz_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedAndDeferredinPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested And Deferred in Period, Weighted Average Grant Date Fair Value", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested And Deferred in Period, Weighted Average Grant Date Fair Value", "terseLabel": "Vested but deferred, weighted-average grant-date fair value (in dollars per share)" } } }, "localname": "SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedAndDeferredinPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "perShareItemType" }, "aiz_SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofPerformanceMeasures": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Performance Measures", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Performance Measures", "terseLabel": "Performance measures" } } }, "localname": "SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofPerformanceMeasures", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "integerItemType" }, "aiz_SharebasedCompensationArrangementbySharebasedPaymentAwardPerformanceMeasurementPeriod": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share-based Compensation Arrangement by Share-based Payment Award, Performance Measurement Period", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Performance Measurement Period", "terseLabel": "Performance period" } } }, "localname": "SharebasedCompensationArrangementbySharebasedPaymentAwardPerformanceMeasurementPeriod", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_ShortDurationMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Short Duration [Member]", "label": "Short Duration [Member]", "terseLabel": "Short Duration" } } }, "localname": "ShortDurationMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails" ], "xbrltype": "domainItemType" }, "aiz_ShortTermInvestmentsAndFixedMaturities": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Short term investments and fixed maturities", "label": "Short Term Investments And Fixed Maturities", "terseLabel": "Short term investments and fixed maturities" } } }, "localname": "ShortTermInvestmentsAndFixedMaturities", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_ShortdurationInsuranceContractsAccidentYear2017Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Short-duration Insurance Contracts, Accident Year 2017 [Member]", "label": "Short-duration Insurance Contracts, Accident Year 2017 [Member]", "terseLabel": "2017" } } }, "localname": "ShortdurationInsuranceContractsAccidentYear2017Member", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "domainItemType" }, "aiz_SpecialPurposeEntityProceedsFromIssuanceOfLongTermDebt": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Special Purpose Entity, Proceeds From Issuance Of Long Term Debt", "label": "Special Purpose Entity, Proceeds From Issuance Of Long Term Debt", "terseLabel": "Issuance of debt for consolidated investment entities" } } }, "localname": "SpecialPurposeEntityProceedsFromIssuanceOfLongTermDebt", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_SpecialPurposeEntityRepaymentsofDebt": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 9.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Special Purpose Entity, Repayments of Debt", "label": "Special Purpose Entity, Repayments of Debt", "negatedTerseLabel": "Repayment of debt for consolidated investment entities" } } }, "localname": "SpecialPurposeEntityRepaymentsofDebt", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "aiz_SpecialtyPropertyMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Specialty Property [Member]", "label": "Specialty Property [Member]", "terseLabel": "Global Housing" } } }, "localname": "SpecialtyPropertyMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails" ], "xbrltype": "domainItemType" }, "aiz_StatutoryAccountingPracticesRiskBasedCapitalRequirementsAuthorizedControlLevel": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Statutory Accounting Practices, Risk Based Capital Requirements, Authorized Control Level", "label": "Statutory Accounting Practices, Risk Based Capital Requirements, Authorized Control Level", "terseLabel": "Risk based capital ratio requirement, authorized control level (less than)" } } }, "localname": "StatutoryAccountingPracticesRiskBasedCapitalRequirementsAuthorizedControlLevel", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_StatutoryAccountingPracticesRiskBasedCapitalRequirementsCompanyActionLevel": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Statutory Accounting Practices, Risk Based Capital Requirements, Company Action Level", "label": "Statutory Accounting Practices, Risk Based Capital Requirements, Company Action Level", "terseLabel": "Risk based capital ratio requirement, company action level" } } }, "localname": "StatutoryAccountingPracticesRiskBasedCapitalRequirementsCompanyActionLevel", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_StatutoryAccountingPracticesStatutorySurplusPercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Statutory accounting practices, statutory surplus percentage", "label": "Statutory Accounting Practices, Statutory Surplus Percentage", "terseLabel": "Statutory surplus, percentage" } } }, "localname": "StatutoryAccountingPracticesStatutorySurplusPercentage", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_StatutoryAccountingPracticesStatutorySurplusReductionDueToTCJA": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Statutory Accounting Practices, Statutory Surplus Reduction Due To TCJA", "label": "Statutory Accounting Practices, Statutory Surplus Reduction Due To TCJA", "terseLabel": "Reduction of statutory surplus due to TCJA" } } }, "localname": "StatutoryAccountingPracticesStatutorySurplusReductionDueToTCJA", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails" ], "xbrltype": "monetaryItemType" }, "aiz_StatutoryAccountingPracticesStatutoryTotalAdjustedCapitalBalance": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Statutory Accounting Practices, Statutory Total Adjusted Capital, Balance", "label": "Statutory Accounting Practices, Statutory Total Adjusted Capital, Balance", "verboseLabel": "Total adjusted capital" } } }, "localname": "StatutoryAccountingPracticesStatutoryTotalAdjustedCapitalBalance", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_StatutoryAccountingPracticesTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Statutory accounting practices [Text Block]", "label": "Statutory Accounting Practices [Text Block]", "terseLabel": "Statutory Information" } } }, "localname": "StatutoryAccountingPracticesTextBlock", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/StatutoryInformation" ], "xbrltype": "textBlockItemType" }, "aiz_SublimitForLettersOfCreditIssued": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Sublimit For Letters Of Credit Issued", "label": "Sublimit For Letters Of Credit Issued", "terseLabel": "Sublimit for letters of credit issued" } } }, "localname": "SublimitForLettersOfCreditIssued", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_SunLifeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Sun Life [Member]", "label": "Sun Life [Member]", "terseLabel": "Sun Life" } } }, "localname": "SunLifeMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_SurrenderCharge": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Surrender Charge", "label": "Surrender Charge", "terseLabel": "Surrender charge" } } }, "localname": "SurrenderCharge", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_SurrenderChargePeriod": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Surrender Charge, Period", "label": "Surrender Charge, Period", "terseLabel": "Surrender charge, period" } } }, "localname": "SurrenderChargePeriod", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "durationItemType" }, "aiz_TWGHoldingsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "TWG Holdings [Member]", "label": "TWG Holdings [Member]", "terseLabel": "TWG Holdings" } } }, "localname": "TWGHoldingsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "domainItemType" }, "aiz_TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Tax Cuts and Jobs Act of 2017, Incomplete Accounting,Provisional Income Tax Expense (Benefit)", "label": "Tax Cuts and Jobs Act of 2017, Incomplete Accounting,Provisional Income Tax Expense (Benefit)", "negatedTerseLabel": "One time tax benefit", "terseLabel": "Discrete benefit due to new tax laws" } } }, "localname": "TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/IncomeTaxesNarrativeDetails", "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_TheTermLoanFacilityMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The Term Loan Facility [Member]", "label": "The Term Loan Facility [Member]", "terseLabel": "The Term Loan Facility" } } }, "localname": "TheTermLoanFacilityMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "domainItemType" }, "aiz_TotalCorporateAndOtherMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Total Corporate and Other [Member]", "label": "Total Corporate And Other [Member]", "terseLabel": "Total Corporate & Other" } } }, "localname": "TotalCorporateAndOtherMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "aiz_UnderstatementofIncomeFromContractsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Understatement of Income From Contracts [Member]", "label": "Understatement of Income From Contracts [Member]", "terseLabel": "Understatement of income from contracts" } } }, "localname": "UnderstatementofIncomeFromContractsMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_UnderstatementofLiabilitiesRelatedtoPreviouslyIncurredExpensesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Understatement of Liabilities Related to Previously Incurred Expenses [Member]", "label": "Understatement of Liabilities Related to Previously Incurred Expenses [Member]", "terseLabel": "Understatement of liabilities related to previously incurred expenses" } } }, "localname": "UnderstatementofLiabilitiesRelatedtoPreviouslyIncurredExpensesMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_UnsecuredBridgeLoanFacilityMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Unsecured Bridge Loan Facility [Member]", "label": "Unsecured Bridge Loan Facility [Member]", "terseLabel": "Unsecured Bridge Loan Facility" } } }, "localname": "UnsecuredBridgeLoanFacilityMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "domainItemType" }, "aiz_ValueOfBusinessAcquiredMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Value Of Business Acquired [Member]", "label": "Value Of Business Acquired [Member]", "terseLabel": "VOBA" } } }, "localname": "ValueOfBusinessAcquiredMember", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsTables", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "domainItemType" }, "aiz_ValueOfBusinessAcquiredVOBTranslationAdjustmentAndOther": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Value of business acquired VOBA translation adjustment and other", "label": "Value Of Business Acquired V O B A Translation Adjustment And Other", "terseLabel": "Foreign currency translation and other" } } }, "localname": "ValueOfBusinessAcquiredVOBTranslationAdjustmentAndOther", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutVobaDetails" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Variable Interest Entities [Abstract]", "label": "Variable Interest Entities [Abstract]" } } }, "localname": "VariableInterestEntitiesAbstract", "nsuri": "http://www.assurant.com/20171231", "xbrltype": "stringItemType" }, "aiz_VariableInterestEntityConsolidatedAssetsCash": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Variable Interest Entity, Consolidated, Assets, Cash", "label": "Variable Interest Entity, Consolidated, Assets, Cash", "terseLabel": "Cash and cash equivalents" } } }, "localname": "VariableInterestEntityConsolidatedAssetsCash", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityConsolidatedAssetsInvestmentsAtFairValue": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Variable Interest Entity, Consolidated, Assets, Investments At Fair Value", "label": "Variable Interest Entity, Consolidated, Assets, Investments At Fair Value", "terseLabel": "Investments, at fair value" } } }, "localname": "VariableInterestEntityConsolidatedAssetsInvestmentsAtFairValue", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityConsolidatedAssetsOtherReceivables": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Variable Interest Entity, Consolidated, Assets, Other Receivables", "label": "Variable Interest Entity, Consolidated, Assets, Other Receivables", "terseLabel": "Other receivables" } } }, "localname": "VariableInterestEntityConsolidatedAssetsOtherReceivables", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityConsolidatedLiabilitiesCollateralizedLoanObligationNotesAtFairValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Variable Interest Entity, Consolidated, Liabilities, Collateralized Loan Obligation Notes At Fair Value", "label": "Variable Interest Entity, Consolidated, Liabilities, Collateralized Loan Obligation Notes At Fair Value", "terseLabel": "Collateralized loan obligation notes, at fair value" } } }, "localname": "VariableInterestEntityConsolidatedLiabilitiesCollateralizedLoanObligationNotesAtFairValue", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityConsolidatedLiabilitiesOtherLiabilities": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Variable Interest Entity, Consolidated, Liabilities, Other Liabilities", "label": "Variable Interest Entity, Consolidated, Liabilities, Other Liabilities", "terseLabel": "Other liabilities" } } }, "localname": "VariableInterestEntityConsolidatedLiabilitiesOtherLiabilities", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityMeasureofActivityReclassificationtoCash": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Variable Interest Entity, Measure of Activity, Reclassification to Cash", "label": "Variable Interest Entity, Measure of Activity, Reclassification to Cash", "terseLabel": "Reclassified to cash" } } }, "localname": "VariableInterestEntityMeasureofActivityReclassificationtoCash", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityMeasureofActivityTransfersIn": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Variable Interest Entity, Measure of Activity, Transfers In", "label": "Variable Interest Entity, Measure of Activity, Transfers In", "terseLabel": "Transfers in" } } }, "localname": "VariableInterestEntityMeasureofActivityTransfersIn", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityRealEstateFund": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Variable Interest Entity, Real Estate Fund", "label": "Variable Interest Entity, Real Estate Fund", "periodEndLabel": "Balance, end of period", "periodStartLabel": "Balance, beginning of period" } } }, "localname": "VariableInterestEntityRealEstateFund", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityUnfundedCommitments": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Variable Interest Entity, Unfunded Commitments", "label": "Variable Interest Entity, Unfunded Commitments", "terseLabel": "Unfunded commitments" } } }, "localname": "VariableInterestEntityUnfundedCommitments", "nsuri": "http://www.assurant.com/20171231", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "country_GB": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "UNITED KINGDOM", "terseLabel": "United Kingdom" } } }, "localname": "GB", "nsuri": "http://xbrl.sec.gov/country/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "country_US": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "UNITED STATES", "terseLabel": "United States" } } }, "localname": "US", "nsuri": "http://xbrl.sec.gov/country/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfFinancialInformationByGeographicLocationDetails" ], "xbrltype": "domainItemType" }, "currency_AllCurrenciesDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "All Currencies [Domain]", "terseLabel": "All Currencies [Domain]" } } }, "localname": "AllCurrenciesDomain", "nsuri": "http://xbrl.sec.gov/currency/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "currency_EUR": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Euro Member Countries, Euro", "terseLabel": "United Kingdom, Pounds and Euro Countries, Euro" } } }, "localname": "EUR", "nsuri": "http://xbrl.sec.gov/currency/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "dei_AmendmentFlag": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "If the value is true, then the document is an amendment to previously-filed/accepted document.", "label": "Amendment Flag", "terseLabel": "Amendment Flag" } } }, "localname": "AmendmentFlag", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_CurrentFiscalYearEndDate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "End date of current fiscal year in the format --MM-DD.", "label": "Current Fiscal Year End Date", "terseLabel": "Current Fiscal Year End Date" } } }, "localname": "CurrentFiscalYearEndDate", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "gMonthDayItemType" }, "dei_DocumentFiscalPeriodFocus": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "This is focus fiscal period of the document report. For a first quarter 2006 quarterly report, which may also provide financial information from prior periods, the first fiscal quarter should be given as the fiscal period focus. Values: FY, Q1, Q2, Q3, Q4, H1, H2, M9, T1, T2, T3, M8, CY.", "label": "Document Fiscal Period Focus", "terseLabel": "Document Fiscal Period Focus" } } }, "localname": "DocumentFiscalPeriodFocus", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "fiscalPeriodItemType" }, "dei_DocumentFiscalYearFocus": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.", "label": "Document Fiscal Year Focus", "terseLabel": "Document Fiscal Year Focus" } } }, "localname": "DocumentFiscalYearFocus", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "gYearItemType" }, "dei_DocumentPeriodEndDate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.", "label": "Document Period End Date", "terseLabel": "Document Period End Date" } } }, "localname": "DocumentPeriodEndDate", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "dateItemType" }, "dei_DocumentType": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word \"Other\".", "label": "Document Type", "terseLabel": "Document Type" } } }, "localname": "DocumentType", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "submissionTypeItemType" }, "dei_EntityCentralIndexKey": { "auth_ref": [ "r804" ], "lang": { "en-US": { "role": { "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.", "label": "Entity Central Index Key", "terseLabel": "Entity Central Index Key" } } }, "localname": "EntityCentralIndexKey", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "centralIndexKeyItemType" }, "dei_EntityCommonStockSharesOutstanding": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.", "label": "Entity Common Stock, Shares Outstanding", "terseLabel": "Entity Common Stock, Shares Outstanding" } } }, "localname": "EntityCommonStockSharesOutstanding", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "sharesItemType" }, "dei_EntityCurrentReportingStatus": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate \"Yes\" or \"No\" whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.", "label": "Entity Current Reporting Status", "terseLabel": "Entity Current Reporting Status" } } }, "localname": "EntityCurrentReportingStatus", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_EntityDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains.", "label": "Entity [Domain]", "terseLabel": "Entity [Domain]" } } }, "localname": "EntityDomain", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyParentheticalDetails" ], "xbrltype": "domainItemType" }, "dei_EntityFilerCategory": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, (4) Smaller Reporting Company (Non-accelerated) or (5) Smaller Reporting Accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.", "label": "Entity Filer Category", "terseLabel": "Entity Filer Category" } } }, "localname": "EntityFilerCategory", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "filerCategoryItemType" }, "dei_EntityPublicFloat": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "State aggregate market value of voting and non-voting common equity held by non-affiliates computed by reference to price at which the common equity was last sold, or average bid and asked price of such common equity, as of the last business day of registrant's most recently completed second fiscal quarter. The public float should be reported on the cover page of the registrants form 10K.", "label": "Entity Public Float", "terseLabel": "Entity Public Float" } } }, "localname": "EntityPublicFloat", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "monetaryItemType" }, "dei_EntityRegistrantName": { "auth_ref": [ "r804" ], "lang": { "en-US": { "role": { "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.", "label": "Entity Registrant Name", "terseLabel": "Entity Registrant Name" } } }, "localname": "EntityRegistrantName", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityVoluntaryFilers": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate \"Yes\" or \"No\" if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.", "label": "Entity Voluntary Filers", "terseLabel": "Entity Voluntary Filers" } } }, "localname": "EntityVoluntaryFilers", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_EntityWellKnownSeasonedIssuer": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate \"Yes\" or \"No\" if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A.", "label": "Entity Well-known Seasoned Issuer", "terseLabel": "Entity Well-known Seasoned Issuer" } } }, "localname": "EntityWellKnownSeasonedIssuer", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_LegalEntityAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The set of legal entities associated with a report.", "label": "Legal Entity [Axis]", "terseLabel": "Legal Entity [Axis]" } } }, "localname": "LegalEntityAxis", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyParentheticalDetails" ], "xbrltype": "stringItemType" }, "dei_TradingSymbol": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Trading symbol of an instrument as listed on an exchange.", "label": "Trading Symbol", "terseLabel": "Trading Symbol" } } }, "localname": "TradingSymbol", "nsuri": "http://xbrl.sec.gov/dei/2014-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "invest_InvestmentGeographicRegionAxis": { "auth_ref": [ "r805" ], "lang": { "en-US": { "role": { "documentation": "For an investments table in which investments are categorized by geographic region (continent, region, country, state or province) this axis contains the members of that categorization.", "label": "Investment Geographic Region [Axis]", "terseLabel": "Investment Geographic Region [Axis]" } } }, "localname": "InvestmentGeographicRegionAxis", "nsuri": "http://xbrl.sec.gov/invest/2013-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "invest_InvestmentGeographicRegionDomain": { "auth_ref": [ "r805" ], "lang": { "en-US": { "role": { "documentation": "For an investments table in which investments are categorized by geographic region (continent, region, country, state or province) this domain represents the collection of all members of the axis.", "label": "Investment Geographic Region [Domain]", "terseLabel": "Investment Geographic Region [Domain]" } } }, "localname": "InvestmentGeographicRegionDomain", "nsuri": "http://xbrl.sec.gov/invest/2013-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "invest_InvestmentLineItems": { "auth_ref": [ "r806" ], "lang": { "en-US": { "role": { "documentation": "Line items represent reporting concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Investment [Line Items]", "terseLabel": "Investment [Line Items]" } } }, "localname": "InvestmentLineItems", "nsuri": "http://xbrl.sec.gov/invest/2013-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "invest_InvestmentSectorAxis": { "auth_ref": [ "r805" ], "lang": { "en-US": { "role": { "documentation": "For an investments table in which investments are categorized by sector (industry, market, customer tier, etc.) this axis contains the members of that categorization.", "label": "Investment Sector [Axis]", "terseLabel": "Investment Sector [Axis]" } } }, "localname": "InvestmentSectorAxis", "nsuri": "http://xbrl.sec.gov/invest/2013-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "invest_InvestmentSectorDomain": { "auth_ref": [ "r805" ], "lang": { "en-US": { "role": { "documentation": "For an investments table in which investments are categorized by sector (industry, market, customer tier, etc.) this domain represents all members of that categorization.", "label": "Investment Sector [Domain]", "terseLabel": "Investment Sector [Domain]" } } }, "localname": "InvestmentSectorDomain", "nsuri": "http://xbrl.sec.gov/invest/2013-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "invest_InvestmentTextBlock": { "auth_ref": [ "r807" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for investments, including all tables.", "label": "Investment [Text Block]", "terseLabel": "Investments" } } }, "localname": "InvestmentTextBlock", "nsuri": "http://xbrl.sec.gov/invest/2013-01-31", "presentation": [ "http://www.assurant.com/role/Investments" ], "xbrltype": "textBlockItemType" }, "us-gaap_AOCIAttributableToParentNetOfTaxRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "AOCI Attributable to Parent, Net of Tax [Roll Forward]", "terseLabel": "AOCI Attributable to Parent, Net of Tax [Roll Forward]" } } }, "localname": "AOCIAttributableToParentNetOfTaxRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccidentAndHealthInsuranceSegmentMember": { "auth_ref": [ "r727", "r729", "r761" ], "lang": { "en-US": { "role": { "documentation": "Product line consisting of insurance against loss by illness or injury, including but not limited to medical, dental, disability, workmen's compensation and long-term care.", "label": "Accident and Health Insurance Product Line [Member]", "terseLabel": "Accident and health insurance" } } }, "localname": "AccidentAndHealthInsuranceSegmentMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccountingPoliciesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Accounting Policies [Abstract]" } } }, "localname": "AccountingPoliciesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_AccountingStandardsUpdate201409Member": { "auth_ref": [ "r378" ], "lang": { "en-US": { "role": { "documentation": "Accounting Standards Update 2014-09 (Topic 606): Revenue from Contracts with Customers.", "label": "Accounting Standards Update 2014-09 [Member]", "terseLabel": "Accounting Standards Update 2014-09" } } }, "localname": "AccountingStandardsUpdate201409Member", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent": { "auth_ref": [ "r629", "r705" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 8.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.", "label": "Accounts Payable and Accrued Liabilities", "terseLabel": "Accounts payable and other liabilities", "verboseLabel": "Accounts payable and other liabilities" } } }, "localname": "AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccruedInvestmentIncomeReceivable": { "auth_ref": [ "r78", "r616", "r690" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 5.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.", "label": "Accrued Investment Income Receivable", "terseLabel": "Accrued investment income", "verboseLabel": "Accrued investment income" } } }, "localname": "AccruedInvestmentIncomeReceivable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccruedSalesCommissionCurrentAndNoncurrent": { "auth_ref": [ "r70", "r72", "r621", "r682" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions.", "label": "Accrued Sales Commission", "terseLabel": "Commissions payable" } } }, "localname": "AccruedSalesCommissionCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentAttributableToNoncontrollingInterestMember": { "auth_ref": [ "r117", "r124", "r406", "r530" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive (income) loss related to defined benefit plans attributable to the noncontrolling interest.", "label": "Accumulated Defined Benefit Plans Adjustment Attributable to Noncontrolling Interest [Member]", "terseLabel": "Unamortized net (losses) on Pension Plans" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentAttributableToNoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember": { "auth_ref": [ "r117", "r124", "r406", "r530" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive (income) loss related to defined benefit plans attributable to the parent.", "label": "Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]", "terseLabel": "Pension under- funding" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment": { "auth_ref": [ "r90", "r332" ], "calculation": { "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails": { "order": 1.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.", "label": "Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment", "negatedLabel": "Less accumulated depreciation" } } }, "localname": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedForeignCurrencyAdjustmentAttributableToNoncontrollingInterestMember": { "auth_ref": [ "r112", "r124", "r530" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive income (loss) resulting from foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to the noncontrolling interest.", "label": "Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member]", "terseLabel": "Foreign currency translation adjustment" } } }, "localname": "AccumulatedForeignCurrencyAdjustmentAttributableToNoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedNetInvestmentGainLossAttributableToNoncontrollingInterestMember": { "auth_ref": [ "r114", "r124", "r530" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive income (loss) resulting from the appreciation (depreciation) in value of securities attributable to the noncontrolling interest.", "label": "Accumulated Net Investment Gain (Loss) Attributable to Noncontrolling Interest [Member]", "terseLabel": "Unrealized gains on securities" } } }, "localname": "AccumulatedNetInvestmentGainLossAttributableToNoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember": { "auth_ref": [ "r114", "r124", "r530" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive income (loss) resulting from the appreciation (depreciation) in value of securities attributable to the parent.", "label": "Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]", "terseLabel": "Unrealized gains on securities" } } }, "localname": "AccumulatedNetUnrealizedInvestmentGainLossMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Accumulated Other Comprehensive Income (Loss) [Line Items]", "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Line Items]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r121", "r123", "r124" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.", "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax", "terseLabel": "Accumulated other comprehensive income", "verboseLabel": "Accumulated other comprehensive income" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about components of accumulated other comprehensive income (loss).", "label": "Accumulated Other Comprehensive Income (Loss) [Table]", "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Table]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeMember": { "auth_ref": [ "r120", "r124", "r530" ], "lang": { "en-US": { "role": { "documentation": "Accumulated increase (decrease) in equity from transactions and other events and circumstances from non-owner sources, attributable to the parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners.", "label": "AOCI Attributable to Parent [Member]", "terseLabel": "Accumulated Other Comprehensive Income", "verboseLabel": "Accumulated other comprehensive income" } } }, "localname": "AccumulatedOtherComprehensiveIncomeMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedOtherThanTemporaryImpairmentAttributableToNoncontrollingInterestMember": { "auth_ref": [ "r115", "r124", "r264", "r530" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive loss resulting from other-than-temporary impairments of debt securities if a portion of an other-than-temporary impairment (OTTI) has not been recognized in earnings, attributable to the noncontrolling interest.", "label": "Accumulated Other-than-Temporary Impairment Attributable to Noncontrolling Interest [Member]", "terseLabel": "OTTI" } } }, "localname": "AccumulatedOtherThanTemporaryImpairmentAttributableToNoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedOtherThanTemporaryImpairmentMember": { "auth_ref": [ "r115", "r124", "r264", "r530" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive loss resulting from other-than-temporary impairments (OTTI) of debt securities if a portion of an other-than-temporary impairment has not been recognized in earnings, attributable to the parent.", "label": "Accumulated Other-than-Temporary Impairment Attributable to Parent [Member]", "terseLabel": "OTTI" } } }, "localname": "AccumulatedOtherThanTemporaryImpairmentMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife": { "auth_ref": [ "r319" ], "lang": { "en-US": { "role": { "documentation": "Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Acquired Finite-lived Intangible Assets, Weighted Average Useful Life", "terseLabel": "Intangible assets acquired, amortization period" } } }, "localname": "AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "durationItemType" }, "us-gaap_AdditionalPaidInCapitalCommonStock": { "auth_ref": [ "r79" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.", "label": "Additional Paid in Capital, Common Stock", "terseLabel": "Additional paid-in capital", "verboseLabel": "Additional paid-in capital" } } }, "localname": "AdditionalPaidInCapitalCommonStock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdditionalPaidInCapitalMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders.", "label": "Additional Paid-in Capital [Member]", "terseLabel": "Additional Paid-in Capital" } } }, "localname": "AdditionalPaidInCapitalMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "domainItemType" }, "us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in additional paid in capital (APIC) resulting from a tax benefit (deficiency) associated with an share-based compensation plan other than an employee stock ownership plan (ESOP).", "label": "Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net", "terseLabel": "Change in tax benefit from share-based payment arrangements" } } }, "localname": "AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdjustmentsForErrorCorrectionDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Represents the types error corrections made to the financial statements.", "label": "Adjustments for Error Correction [Domain]", "terseLabel": "Adjustments for Error Correction [Domain]" } } }, "localname": "AdjustmentsForErrorCorrectionDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AdjustmentsForNewAccountingPronouncementsAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by new accounting pronouncement.", "label": "Adjustments for New Accounting Pronouncements [Axis]", "terseLabel": "Adjustments for New Accounting Pronouncements [Axis]" } } }, "localname": "AdjustmentsForNewAccountingPronouncementsAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue": { "auth_ref": [ "r428", "r430", "r458", "r459" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words \"stock-based compensation\".", "label": "Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition", "terseLabel": "Stock plan compensation expense" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]", "terseLabel": "Adjustments to reconcile net income to net cash provided by operating activities:" } } }, "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_AllocatedShareBasedCompensationExpense": { "auth_ref": [ "r430", "r450", "r457" ], "calculation": { "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails": { "order": 1.0, "parentTag": "us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.", "label": "Allocated Share-based Compensation Expense", "terseLabel": "Compensation expense" } } }, "localname": "AllocatedShareBasedCompensationExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.", "label": "Allocated Share-based Compensation Expense, Net of Tax", "totalLabel": "Share-based compensation expense, net of tax" } } }, "localname": "AllocatedShareBasedCompensationExpenseNetOfTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables": { "auth_ref": [ "r247", "r694" ], "calculation": { "http://www.assurant.com/role/PremiumsAndAccountsReceivableScheduleOfAllowanceForUncollectibleAmountsDetails": { "order": 2.0, "parentTag": "us-gaap_PremiumsAndOtherReceivablesNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.", "label": "Allowance for Doubtful Accounts, Premiums and Other Receivables", "negatedLabel": "Allowance for uncollectible amounts" } } }, "localname": "AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PremiumsAndAccountsReceivableScheduleOfAllowanceForUncollectibleAmountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllowanceForLoanAndLeaseLossesRealEstateMember": { "auth_ref": [ "r190" ], "lang": { "en-US": { "role": { "documentation": "The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio.", "label": "Allowance for Loan and Lease Losses, Real Estate [Member]", "terseLabel": "Valuation allowance for mortgage loans on real estate" } } }, "localname": "AllowanceForLoanAndLeaseLossesRealEstateMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AllowanceForReinsuranceRecoverableMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A valuation allowance for the amount deemed uncollectible of an insurance receivable related to a policy by which an insurer indemnifies itself of some or all of the risk associated with another insurance policy.", "label": "Allowance for Reinsurance Recoverable [Member]", "terseLabel": "Valuation allowance for reinsurance recoverables" } } }, "localname": "AllowanceForReinsuranceRecoverableMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AllowanceForUncollectibleAccountsTimeSharingTransactionsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Allowance for uncollectible accounts relating to real estate time sharing receivables.", "label": "Allowance for Uncollectible Accounts, Time Sharing Transactions [Member]", "terseLabel": "Valuation allowance for uncollectible accounts" } } }, "localname": "AllowanceForUncollectibleAccountsTimeSharingTransactionsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AllowanceForUncollectibleAgencyLoansMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A valuation allowance for the portion of money lent to a government agency that is expected to be uncollectible.", "label": "Allowance for Uncollectible Agency Loans [Member]", "terseLabel": "Valuation allowance for uncollectible agents balances" } } }, "localname": "AllowanceForUncollectibleAgencyLoansMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AmortizationOfIntangibleAssets": { "auth_ref": [ "r168", "r317", "r324" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.", "label": "Amortization of Intangible Assets", "terseLabel": "Amortization of Intangible Assets" } } }, "localname": "AmortizationOfIntangibleAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount recognized in net periodic benefit cost and other comprehensive income.", "label": "Amount Recognized in Net Periodic Benefit Cost and Other Comprehensive Income (Loss), before Tax", "totalLabel": "Total recognized in net periodic benefit cost and other comprehensive income (loss)" } } }, "localname": "AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount": { "auth_ref": [ "r5", "r12", "r18", "r205" ], "lang": { "en-US": { "role": { "documentation": "Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.", "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount", "terseLabel": "Outstanding Anti-dilutive Shares excluded from Diluted EPS Calculation (in shares)" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis": { "auth_ref": [ "r205" ], "lang": { "en-US": { "role": { "documentation": "Information by type of antidilutive security.", "label": "Antidilutive Securities [Axis]", "terseLabel": "Antidilutive Securities [Axis]" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]", "terseLabel": "Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AntidilutiveSecuritiesNameDomain": { "auth_ref": [ "r205" ], "lang": { "en-US": { "role": { "documentation": "Incremental common shares attributable to securities that were not included in diluted earnings per share (EPS) because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.", "label": "Antidilutive Securities, Name [Domain]", "terseLabel": "Antidilutive Securities, Name [Domain]" } } }, "localname": "AntidilutiveSecuritiesNameDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AssetBackedSecuritiesMember": { "auth_ref": [ "r278" ], "lang": { "en-US": { "role": { "documentation": "Securities that are primarily serviced by the cash flows of a discrete pool of receivables or other financial assets for example, but not limited to, credit card receivables, car loans, recreational vehicle loans, and mobile home loans.", "label": "Asset-backed Securities [Member]", "terseLabel": "Asset-backed" } } }, "localname": "AssetBackedSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Assets": { "auth_ref": [ "r617", "r680" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets", "totalLabel": "Total assets" } } }, "localname": "Assets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Assets [Abstract]", "terseLabel": "Assets" } } }, "localname": "AssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsFairValueDisclosure": { "auth_ref": [ "r558" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets, Fair Value Disclosure", "terseLabel": "Assets" } } }, "localname": "AssetsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsFairValueDisclosureNonrecurring": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.", "label": "Assets, Fair Value Disclosure, Nonrecurring", "totalLabel": "Total financial assets" } } }, "localname": "AssetsFairValueDisclosureNonrecurring", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsFairValueDisclosureRecurring": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.", "label": "Assets, Fair Value Disclosure, Recurring", "terseLabel": "Total financial assets" } } }, "localname": "AssetsFairValueDisclosureRecurring", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsHeldByInsuranceRegulators": { "auth_ref": [ "r744" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.", "label": "Assets Held by Insurance Regulators", "verboseLabel": "Invested assets held in trusts" } } }, "localname": "AssetsHeldByInsuranceRegulators", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssumedPremiumsEarned": { "auth_ref": [ "r715", "r728", "r775" ], "calculation": { "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails": { "order": 2.0, "parentTag": "us-gaap_PremiumsEarnedNet", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of earned premiums assumed from other entities.", "label": "Assumed Premiums Earned", "terseLabel": "Premiums assumed", "verboseLabel": "Premiums, assumed from other companies" } } }, "localname": "AssumedPremiumsEarned", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax": { "auth_ref": [ "r268" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.", "label": "Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax", "terseLabel": "Fixed maturity securities available for sale, gross unrealized gains" } } }, "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax": { "auth_ref": [ "r269" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.", "label": "Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax", "negatedTerseLabel": "Fixed maturity securities available for sale, unrealized losses" } } }, "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis": { "auth_ref": [ "r96", "r267" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.", "label": "Available-for-sale Debt Securities, Amortized Cost Basis", "terseLabel": "Fixed maturity securities available for sale, amortized cost", "totalLabel": "Fixed maturity securities available for sale, amortized cost" } } }, "localname": "AvailableForSaleDebtSecuritiesAmortizedCostBasis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax": { "auth_ref": [ "r268" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale.", "label": "Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax", "terseLabel": "Equity securities available for sale, gross unrealized gains" } } }, "localname": "AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax": { "auth_ref": [ "r269" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale.", "label": "Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax", "negatedLabel": "Equity securities available for sale, gross unrealized losses" } } }, "localname": "AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.", "label": "Available-for-sale Equity Securities, Amortized Cost Basis", "terseLabel": "Equity securities available for sale, cost", "totalLabel": "Equity securities available for sale, cost or amortized cost" } } }, "localname": "AvailableForSaleEquitySecuritiesAmortizedCostBasis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecurities": { "auth_ref": [ "r257", "r262", "r277" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.", "label": "Available-for-sale Securities", "terseLabel": "Investment in securities" } } }, "localname": "AvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of unrealized gain (loss) in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.", "label": "Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax", "terseLabel": "Unrealized gain on investments" } } }, "localname": "AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": { "auth_ref": [ "r280", "r283" ], "calculation": { "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss", "negatedLabel": "Gross unrealized losses on securities, 12 months or more, unrealized losses" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss": { "auth_ref": [ "r280", "r283" ], "calculation": { "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss", "negatedTotalLabel": "Gross unrealized losses on securities, unrealized losses, total" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue": { "auth_ref": [ "r279" ], "calculation": { "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value", "totalLabel": "Gross unrealized losses on securities, fair Value, total" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of fair value of investments in debt and equity securities in an unrealized loss position categorized neither as held-to-maturity nor trading securities.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]", "terseLabel": "Duration Of Gross Unrealized Losses On Fixed Maturity Securities And Equity Securities" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": { "auth_ref": [ "r280", "r283" ], "calculation": { "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss", "negatedLabel": "Gross unrealized losses on securities, less than 12 months, unrealized losses" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue": { "auth_ref": [ "r279", "r283" ], "calculation": { "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value", "terseLabel": "Gross unrealized losses on securities, less than 12 months, fair value" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue": { "auth_ref": [ "r279", "r283" ], "calculation": { "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value", "terseLabel": "Gross unrealized losses on securities, 12 months or more, fair value" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost": { "auth_ref": [ "r96", "r274" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 1.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after adjustments of available-for-sale debt securities at cost, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis", "terseLabel": "Due after five years through ten years, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": { "auth_ref": [ "r270", "r274", "r650" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 1.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityFairValueTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of available-for-sale debt securities maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value", "terseLabel": "Due after five years through ten years, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost": { "auth_ref": [ "r96", "r273" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 2.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after adjustments of available-for-sale debt securities at cost, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis", "terseLabel": "Due after one year through five years, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": { "auth_ref": [ "r270", "r273", "r649" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 2.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityFairValueTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of available-for-sale debt securities maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value", "terseLabel": "Due after one year through five years, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost": { "auth_ref": [ "r96", "r275" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 3.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after adjustments of available-for-sale debt securities at cost, maturing after the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis", "terseLabel": "Due after ten years, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue": { "auth_ref": [ "r270", "r275", "r651" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 3.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityFairValueTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of available-for-sale debt securities maturing after the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value", "terseLabel": "Due after ten years, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost": { "auth_ref": [ "r96", "r272" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 4.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after adjustments of available-for-sale debt securities at cost, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis", "terseLabel": "Due in one year or less, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue": { "auth_ref": [ "r270", "r272", "r648" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 4.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityFairValueTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of available-for-sale debt securities maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value", "terseLabel": "Due in one year or less, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost": { "auth_ref": [ "r96", "r276" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities at cost, net of adjustments, that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the cost over several maturity groupings. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.", "label": "Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis", "terseLabel": "Cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue": { "auth_ref": [ "r267", "r276" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of available-for-sale debt securities at fair value that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the fair value over several maturity groupings.", "label": "Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value", "terseLabel": "Fair Value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtSecurities": { "auth_ref": [ "r257", "r262", "r267", "r646" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Investments", "weight": 1.0 }, "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": 3.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 2.0, "parentTag": "us-gaap_Investments", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of debt securities categorized neither as held-to-maturity nor trading.", "label": "Available-for-sale Securities, Debt Securities", "netLabel": "Fixed maturity securities available for sale, at fair value (amortized cost \u2013 $375.4 in 2017 and $428.7 in 2016)", "terseLabel": "Fixed maturity securities available for sale, at fair value (amortized cost \u2013 $8,756.5 in 2017 and $8,870.8 in 2016)", "verboseLabel": "Fixed maturity securities, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtSecurities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesEquitySecurities": { "auth_ref": [ "r257", "r262", "r645" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Investments", "weight": 1.0 }, "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": 3.0, "parentTag": "us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis", "weight": 1.0 }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 3.0, "parentTag": "us-gaap_Investments", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of equity securities categorized neither as held-to-maturity nor as trading.", "label": "Available-for-sale Securities, Equity Securities", "netLabel": "Equity securities available for sale, at fair value", "terseLabel": "Equity securities available for sale, at fair value (amortized cost \u2013 $14.6 in 2017 and $20.3 in 2016)", "verboseLabel": "Equity securities available for sale, at fair value (cost \u2013 $316.3 in 2017 and $381.8 in 2016)" } } }, "localname": "AvailableForSaleSecuritiesEquitySecurities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesGrossRealizedGains": { "auth_ref": [ "r291" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.", "label": "Available-for-sale Securities, Gross Realized Gains", "verboseLabel": "Gross realized gains" } } }, "localname": "AvailableForSaleSecuritiesGrossRealizedGains", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses": { "auth_ref": [ "r291" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.", "label": "Available-for-sale Securities, Gross Realized Losses", "verboseLabel": "Gross realized losses" } } }, "localname": "AvailableForSaleSecuritiesGrossRealizedLosses", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesTextBlock": { "auth_ref": [ "r271", "r276", "r282", "r283", "r298", "r647", "r652" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.", "label": "Available-for-sale Securities [Table Text Block]", "terseLabel": "Amortized Cost, Gross Unrealized Gains And Losses, Fair Value And OTTI" } } }, "localname": "AvailableForSaleSecuritiesTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_AwardTypeAxis": { "auth_ref": [ "r432", "r453" ], "lang": { "en-US": { "role": { "documentation": "Information by award type pertaining to equity-based compensation.", "label": "Award Type [Axis]", "terseLabel": "Award Type [Axis]" } } }, "localname": "AwardTypeAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfEstimationOfFairValueOfAwardsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BasisOfAccountingPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).", "label": "Basis of Accounting, Policy [Policy Text Block]", "verboseLabel": "Basis Of Presentation" } } }, "localname": "BasisOfAccountingPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_BenefitsLossesAndExpenses": { "auth_ref": [ "r720" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 2.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The total amount of expense recognized during the period for future policy benefits, claims and claims adjustment costs, and for selling, general and administrative costs.", "label": "Benefits, Losses and Expenses", "totalLabel": "Total benefits, losses and expenses" } } }, "localname": "BenefitsLossesAndExpenses", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BenefitsLossesAndExpensesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Benefits, Losses and Expenses [Abstract]", "terseLabel": "Benefits, losses and expenses", "verboseLabel": "Expenses" } } }, "localname": "BenefitsLossesAndExpensesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BridgeLoanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Financing which is expected to be replaced by a medium to long-term loan. The loan \"bridges\" the gap in time when otherwise no financing would be in place.", "label": "Bridge Loan [Member]", "terseLabel": "Bridge loan" } } }, "localname": "BridgeLoanMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_BuildingMember": { "auth_ref": [ "r331" ], "lang": { "en-US": { "role": { "documentation": "Facility held for productive use including, but not limited to, office, production, storage and distribution facilities.", "label": "Building [Member]", "terseLabel": "Buildings" } } }, "localname": "BuildingMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_BuildingsAndImprovementsGross": { "auth_ref": [ "r62", "r331" ], "calculation": { "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails": { "order": 1.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.", "label": "Buildings and Improvements, Gross", "terseLabel": "Buildings and improvements" } } }, "localname": "BuildingsAndImprovementsGross", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessAcquisitionAcquireeDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Identification of the acquiree in a material business combination (or series of individually immaterial business combinations), which may include the name or other type of identification of the acquiree.", "label": "Business Acquisition, Acquiree [Domain]", "terseLabel": "Business Acquisition, Acquiree [Domain]" } } }, "localname": "BusinessAcquisitionAcquireeDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_BusinessAcquisitionAxis": { "auth_ref": [ "r498", "r499" ], "lang": { "en-US": { "role": { "documentation": "Information by business combination or series of individually immaterial business combinations.", "label": "Business Acquisition [Axis]", "terseLabel": "Business Acquisition [Axis]" } } }, "localname": "BusinessAcquisitionAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BusinessAcquisitionLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Business Acquisition [Line Items]", "terseLabel": "Business Acquisition [Line Items]" } } }, "localname": "BusinessAcquisitionLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired": { "auth_ref": [ "r497" ], "lang": { "en-US": { "role": { "documentation": "Percentage of voting equity interests acquired at the acquisition date in the business combination.", "label": "Business Acquisition, Percentage of Voting Interests Acquired", "terseLabel": "Acquisition percentage" } } }, "localname": "BusinessAcquisitionPercentageOfVotingInterestsAcquired", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount": { "auth_ref": [ "r518" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.", "label": "Business Acquisition, Goodwill, Expected Tax Deductible Amount", "terseLabel": "Tax-deductible goodwill" } } }, "localname": "BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationConsiderationTransferred1": { "auth_ref": [ "r514", "r515", "r516" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.", "label": "Business Combination, Consideration Transferred", "terseLabel": "Consideration transferred" } } }, "localname": "BusinessCombinationConsiderationTransferred1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationConsiderationTransferredOther1": { "auth_ref": [ "r517" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.", "label": "Business Combination, Consideration Transferred, Other", "terseLabel": "Expected contingent payment" } } }, "localname": "BusinessCombinationConsiderationTransferredOther1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationDisclosureTextBlock": { "auth_ref": [ "r496", "r498", "r499", "r500", "r501", "r502", "r505", "r506", "r507", "r508", "r510", "r519", "r520", "r521", "r522" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).", "label": "Business Combination Disclosure [Text Block]", "terseLabel": "Acquisitions" } } }, "localname": "BusinessCombinationDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/Acquisitions" ], "xbrltype": "textBlockItemType" }, "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles": { "auth_ref": [ "r509" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.", "label": "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles", "terseLabel": "Adjusted intangible assets" } } }, "localname": "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill": { "auth_ref": [ "r504" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of intangible assets, excluding goodwill, acquired at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill", "terseLabel": "Intangible assets acquired" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles": { "auth_ref": [ "r503", "r504" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of identifiable intangible assets recognized as of the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles", "terseLabel": "amortizable intangible assets" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities": { "auth_ref": [ "r504" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities assumed at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities", "terseLabel": "Liabilities recorded in acquisition" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Business Combinations [Abstract]" } } }, "localname": "BusinessCombinationsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_BusinessExitCosts1": { "auth_ref": [ "r168", "r339", "r341", "r343" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.", "label": "Business Exit Costs", "verboseLabel": "After-tax exit and disposal costs" } } }, "localname": "BusinessExitCosts1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CarryingReportedAmountFairValueDisclosureMember": { "auth_ref": [ "r578", "r579" ], "lang": { "en-US": { "role": { "documentation": "Measured as reported on the statement of financial position (balance sheet).", "label": "Reported Value Measurement [Member]", "terseLabel": "Carrying Value" } } }, "localname": "CarryingReportedAmountFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CashAndCashEquivalentsAtCarryingValue": { "auth_ref": [ "r8", "r9", "r60", "r85", "r170" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 2.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.", "label": "Cash and Cash Equivalents, at Carrying Value", "periodEndLabel": "Cash and cash equivalents at end of period", "periodStartLabel": "Cash and cash equivalents at beginning of period", "terseLabel": "Cash and cash equivalents" } } }, "localname": "CashAndCashEquivalentsAtCarryingValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsMember": { "auth_ref": [ "r8", "r9" ], "lang": { "en-US": { "role": { "documentation": "Currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash and Cash Equivalents [Member]", "terseLabel": "Cash and cash equivalents" } } }, "localname": "CashAndCashEquivalentsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease": { "auth_ref": [ "r161", "r590" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.", "label": "Cash and Cash Equivalents, Period Increase (Decrease)", "terseLabel": "Change in cash and cash equivalents" } } }, "localname": "CashAndCashEquivalentsPeriodIncreaseDecrease", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsPolicyTextBlock": { "auth_ref": [ "r8", "r9", "r63", "r174", "r176", "r241" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.", "label": "Cash and Cash Equivalents, Policy [Policy Text Block]", "verboseLabel": "Cash And Cash Equivalents" } } }, "localname": "CashAndCashEquivalentsPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CashEquivalentsMember": { "auth_ref": [ "r9", "r63" ], "lang": { "en-US": { "role": { "documentation": "Short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash Equivalents [Member]", "terseLabel": "Cash equivalents" } } }, "localname": "CashEquivalentsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CashMember": { "auth_ref": [ "r8", "r63" ], "lang": { "en-US": { "role": { "documentation": "Currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits.", "label": "Cash [Member]", "terseLabel": "Cash and cash equivalents" } } }, "localname": "CashMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CatastrophicEventDomain": { "auth_ref": [ "r345", "r346" ], "lang": { "en-US": { "role": { "documentation": "Catastrophic event, for example, but not limited to, earthquake, windstorm, fire or explosion.", "label": "Catastrophic Event [Domain]", "terseLabel": "Catastrophic Event [Domain]" } } }, "localname": "CatastrophicEventDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails", "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CededCreditRiskAxis": { "auth_ref": [ "r583", "r788" ], "lang": { "en-US": { "role": { "documentation": "Information by reinsurer or group of reinsurers of concentrated credit risk arising from a reinsurance arrangement.", "label": "Ceded Credit Risk, Reinsurer [Axis]", "terseLabel": "Ceded Credit Risk, Reinsurer [Axis]" } } }, "localname": "CededCreditRiskAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails", "http://www.assurant.com/role/ReinsuranceReinsuranceRecoverableDetails", "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CededCreditRiskLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Ceded Credit Risk [Line Items]", "terseLabel": "Ceded Credit Risk [Line Items]" } } }, "localname": "CededCreditRiskLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceReinsuranceRecoverableDetails", "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CededCreditRiskReinsurerDomain": { "auth_ref": [ "r582", "r788" ], "lang": { "en-US": { "role": { "documentation": "Reinsurer or group of reinsurers for whom the entity has a concentration of credit risk.", "label": "Ceded Credit Risk, Reinsurer [Domain]", "terseLabel": "Ceded Credit Risk, Reinsurer [Domain]" } } }, "localname": "CededCreditRiskReinsurerDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails", "http://www.assurant.com/role/ReinsuranceReinsuranceRecoverableDetails", "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CededCreditRiskTable": { "auth_ref": [ "r583", "r788" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about reinsurer or group of reinsurers for whom the entity has a concentration of credit risk.", "label": "Ceded Credit Risk [Table]", "terseLabel": "Ceded Credit Risk [Table]" } } }, "localname": "CededCreditRiskTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceReinsuranceRecoverableDetails", "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CededPremiumsEarned": { "auth_ref": [ "r715", "r728", "r773", "r775" ], "calculation": { "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails": { "order": 3.0, "parentTag": "us-gaap_PremiumsEarnedNet", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of earned premiums ceded to other entities.", "label": "Ceded Premiums Earned", "negatedLabel": "Premiums ceded", "verboseLabel": "Premiums, ceded to other companies" } } }, "localname": "CededPremiumsEarned", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ClaimsDevelopmentLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Claims Development [Line Items]", "terseLabel": "Claims Development [Line Items]" } } }, "localname": "ClaimsDevelopmentLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ClassOfStockDisclosuresAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Class of Stock Disclosures [Abstract]" } } }, "localname": "ClassOfStockDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_ClassOfStockDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share of stock differentiated by the voting rights the holder receives. Examples include, but are not limited to, common stock, redeemable preferred stock, nonredeemable preferred stock, and convertible stock.", "label": "Class of Stock [Domain]", "terseLabel": "Class of Stock [Domain]" } } }, "localname": "ClassOfStockDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ClassOfStockLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Class of Stock [Line Items]", "terseLabel": "Class of Stock [Line Items]" } } }, "localname": "ClassOfStockLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ClassificationOfVariableInterestEntityDomain": { "auth_ref": [ "r533", "r536", "r539", "r542" ], "lang": { "en-US": { "role": { "documentation": "Categorization of Variable Interest Entities (VIE) for consolidation and (or) disclosure purposes, whether individually or in aggregate, by: (1) VIEs consolidated because the entity is the primary beneficiary, (2) VIEs not consolidated because the entity is not the primary beneficiary, and (3) VIEs or potential VIEs that are not consolidated because necessary information is not available. In general, a VIE is a corporation, partnership, trust, or any other legal structure used for business purposes that either (a) does not have equity investors with voting rights or (b) has equity investors that do not provide sufficient financial resources for the entity to support its activities. A VIE often holds financial assets, including loans or receivables, real estate or other property. A VIE may be essentially passive or it may engage in research and development or other activities on behalf of another company.", "label": "Variable Interest Entity, Classification [Domain]", "terseLabel": "Variable Interest Entity, Classification [Domain]" } } }, "localname": "ClassificationOfVariableInterestEntityDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CollateralizedLoanObligationsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Securities collateralized by a pool of loans.", "label": "Collateralized Loan Obligations [Member]", "terseLabel": "CLO", "verboseLabel": "Collateralized loan obligation notes" } } }, "localname": "CollateralizedLoanObligationsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommercialMortgageBackedSecuritiesMember": { "auth_ref": [ "r276" ], "lang": { "en-US": { "role": { "documentation": "Securities collateralized by commercial real estate mortgage loans.", "label": "Commercial Mortgage Backed Securities [Member]", "terseLabel": "Commercial mortgage-backed" } } }, "localname": "CommercialMortgageBackedSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommercialPaperMember": { "auth_ref": [ "r354" ], "lang": { "en-US": { "role": { "documentation": "Unsecured promissory note (generally negotiable) that provides institutions with short-term funds.", "label": "Commercial Paper [Member]", "terseLabel": "Commercial Paper" } } }, "localname": "CommercialPaperMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommercialPortfolioSegmentMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Portfolio segment of the company's total financing receivables related to commercial receivables.", "label": "Commercial Portfolio Segment [Member]", "terseLabel": "Commercial Portfolio Segment" } } }, "localname": "CommercialPortfolioSegmentMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommitmentsAndContingencies": { "auth_ref": [ "r100", "r345", "r632", "r693" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.", "label": "Commitments and Contingencies", "terseLabel": "Commitments and Contingencies", "verboseLabel": "Commitments and contingencies (Note 25)" } } }, "localname": "CommitmentsAndContingencies", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Commitments and Contingencies Disclosure [Abstract]" } } }, "localname": "CommitmentsAndContingenciesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": { "auth_ref": [ "r100", "r344", "r347", "r353", "r588" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for commitments and contingencies.", "label": "Commitments and Contingencies Disclosure [Text Block]", "terseLabel": "Commitments and Contingencies" } } }, "localname": "CommitmentsAndContingenciesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingencies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommitmentsAndContingenciesPolicyTextBlock": { "auth_ref": [ "r176", "r352", "r800", "r801" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for commitments and contingencies, which may include policies for recognizing and measuring loss and gain contingencies.", "label": "Commitments and Contingencies, Policy [Policy Text Block]", "verboseLabel": "Contingencies" } } }, "localname": "CommitmentsAndContingenciesPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommonClassBMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Classification of common stock that has different rights than Common Class A, representing ownership interest in a corporation.", "label": "Common Class B [Member]", "terseLabel": "Common Class B" } } }, "localname": "CommonClassBMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommonClassCMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Classification of common stock that has different rights than provided to Class A or B shares, representing ownership interest in a corporation.", "label": "Common Class C [Member]", "terseLabel": "Common Class C" } } }, "localname": "CommonClassCMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockDividendsPerShareCashPaid": { "auth_ref": [ "r371" ], "lang": { "en-US": { "role": { "documentation": "Aggregate dividends paid during the period for each share of common stock outstanding.", "label": "Common Stock, Dividends, Per Share, Cash Paid", "terseLabel": "Dividends per share (in dollars per share)" } } }, "localname": "CommonStockDividendsPerShareCashPaid", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockMember": { "auth_ref": [ "r10" ], "lang": { "en-US": { "role": { "documentation": "Stock that is subordinate to all other stock of the issuer.", "label": "Common Stock [Member]", "terseLabel": "Common stocks", "verboseLabel": "Common Stock" } } }, "localname": "CommonStockMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockParOrStatedValuePerShare": { "auth_ref": [ "r77" ], "lang": { "en-US": { "role": { "documentation": "Face amount or stated value per share of common stock.", "label": "Common Stock, Par or Stated Value Per Share", "terseLabel": "Common stock, par value (in dollars per share)" } } }, "localname": "CommonStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockSharesAuthorized": { "auth_ref": [ "r77" ], "lang": { "en-US": { "role": { "documentation": "The maximum number of common shares permitted to be issued by an entity's charter and bylaws.", "label": "Common Stock, Shares Authorized", "terseLabel": "Common stock, shares authorized (in shares)", "verboseLabel": "Shares authorized" } } }, "localname": "CommonStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails", "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesOutstanding": { "auth_ref": [ "r77", "r364" ], "lang": { "en-US": { "role": { "documentation": "Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.", "label": "Common Stock, Shares, Outstanding", "periodEndLabel": "Shares outstanding, ending", "periodStartLabel": "Shares outstanding, beginning", "terseLabel": "Common stock, shares outstanding (in shares)" } } }, "localname": "CommonStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails", "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockValue": { "auth_ref": [ "r77" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Common Stock, Value, Issued", "terseLabel": "Common stock, par value $0.01 per share, 800,000,000 shares authorized, 52,417,812 and 55,941,480 shares outstanding at December 31, 2017 and 2016, respectively", "verboseLabel": "Common stock, par value $0.01 per share, 800,000,000 shares authorized, 52,417,812 and 55,941,480 shares outstanding at December 31, 2017 and December 31, 2016, respectively" } } }, "localname": "CommonStockValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNetOfTax": { "auth_ref": [ "r11", "r31", "r32", "r130" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.", "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent", "totalLabel": "Total comprehensive income (loss)" } } }, "localname": "ComprehensiveIncomeNetOfTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNoteTextBlock": { "auth_ref": [ "r41", "r121", "r122", "r123", "r125", "r126", "r127", "r128", "r371" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.", "label": "Comprehensive Income (Loss) Note [Text Block]", "terseLabel": "Accumulated Other Comprehensive Income" } } }, "localname": "ComprehensiveIncomeNoteTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncome" ], "xbrltype": "textBlockItemType" }, "us-gaap_ComprehensiveIncomePolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for comprehensive income.", "label": "Comprehensive Income, Policy [Policy Text Block]", "terseLabel": "Comprehensive Income" } } }, "localname": "ComprehensiveIncomePolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ConcentrationRiskBenchmarkDomain": { "auth_ref": [ "r214", "r216", "r581", "r582" ], "lang": { "en-US": { "role": { "documentation": "The denominator in a calculation of a disclosed concentration risk percentage.", "label": "Concentration Risk Benchmark [Domain]", "terseLabel": "Concentration Risk Benchmark [Domain]" } } }, "localname": "ConcentrationRiskBenchmarkDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ConcentrationRiskByBenchmarkAxis": { "auth_ref": [ "r214", "r216", "r581", "r582" ], "lang": { "en-US": { "role": { "documentation": "Information by benchmark of concentration risk.", "label": "Concentration Risk Benchmark [Axis]", "terseLabel": "Concentration Risk Benchmark [Axis]" } } }, "localname": "ConcentrationRiskByBenchmarkAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ConcentrationRiskByTypeAxis": { "auth_ref": [ "r214", "r216", "r581", "r582" ], "lang": { "en-US": { "role": { "documentation": "Information by type of concentration risk, for example, but not limited to, asset, liability, net assets, geographic, customer, employees, supplier, lender.", "label": "Concentration Risk Type [Axis]", "terseLabel": "Concentration Risk Type [Axis]" } } }, "localname": "ConcentrationRiskByTypeAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ConcentrationRiskPercentage1": { "auth_ref": [ "r214", "r216", "r581", "r582" ], "lang": { "en-US": { "role": { "documentation": "For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the \"benchmark\" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.", "label": "Concentration Risk, Percentage", "terseLabel": "Percentage of European investments held in financial industry classification", "verboseLabel": "Industry concentration risk percentage" } } }, "localname": "ConcentrationRiskPercentage1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ConcentrationRiskTypeDomain": { "auth_ref": [ "r214", "r216", "r581", "r582" ], "lang": { "en-US": { "role": { "documentation": "For an entity that discloses a concentration risk as a percentage of some financial balance or benchmark, identifies the type (for example, asset, liability, net assets, geographic, customer, employees, supplier, lender) of the concentration.", "label": "Concentration Risk Type [Domain]", "terseLabel": "Concentration Risk Type [Domain]" } } }, "localname": "ConcentrationRiskTypeDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Condensed Financial Information of Parent Company Only Disclosure [Abstract]" } } }, "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock": { "auth_ref": [ "r46", "r188", "r523", "r644", "r656" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for condensed financial information, including the financial position, cash flows, and the results of operations of the registrant (parent company) as of the same dates or for the same periods for which audited consolidated financial statements are being presented. Alternatively, the details of this disclosure can be reported by the specific parent company taxonomy elements, indicating the appropriate date and period contexts in an instance document.", "label": "Condensed Financial Information of Parent Company Only Disclosure [Text Block]", "terseLabel": "Condensed Financial Information of Parent Company Only" } } }, "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnly" ], "xbrltype": "textBlockItemType" }, "us-gaap_CondensedFinancialStatementsCaptionsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Condensed Financial Statements, Captions [Line Items]", "terseLabel": "Condensed Financial Statements, Captions [Line Items]" } } }, "localname": "CondensedFinancialStatementsCaptionsLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyParentheticalDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ConsolidationPolicyTextBlock": { "auth_ref": [ "r176", "r528", "r545", "r546" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.", "label": "Consolidation, Policy [Policy Text Block]", "verboseLabel": "Principles Of Consolidation" } } }, "localname": "ConsolidationPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ConsolidationVariableInterestEntityPolicy": { "auth_ref": [ "r176", "r531", "r534", "r537" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for consolidation to describe the significant judgments and assumptions made in determining whether a variable interest held by the entity requires the variable interest entity to be consolidated and (or) disclose information about its involvement with the variable interest entity; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; and the significant factors considered and judgments made in determining that the power to direct the activities that significantly impact the economic performance of the variable interest entity are shared (as defined).", "label": "Consolidation, Variable Interest Entity, Policy [Policy Text Block]", "terseLabel": "Variable Interest Entities" } } }, "localname": "ConsolidationVariableInterestEntityPolicy", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CorporateAndOtherMember": { "auth_ref": [ "r224" ], "lang": { "en-US": { "role": { "documentation": "Component of an entity that provides financial and operational oversight and administrative support for other segments and other segments not separately reported due to size or nature of business activities. Excludes intersegment elimination and reconciling items.", "label": "Corporate and Other [Member]", "terseLabel": "Corporate & Other" } } }, "localname": "CorporateAndOtherMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CorporateDebtSecuritiesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Debt securities issued by domestic or foreign corporate business, banks and other entities with a promise of repayment.", "label": "Corporate Debt Securities [Member]", "terseLabel": "Foreign corporate", "verboseLabel": "Corporate Debt Securities" } } }, "localname": "CorporateDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CreditFacilityAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.", "label": "Credit Facility [Axis]", "terseLabel": "Credit Facility [Axis]" } } }, "localname": "CreditFacilityAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CreditFacilityDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.", "label": "Credit Facility [Domain]", "terseLabel": "Credit Facility [Domain]" } } }, "localname": "CreditFacilityDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CreditRatingAMBestAxis": { "auth_ref": [ "r245", "r351", "r554", "r788" ], "lang": { "en-US": { "role": { "documentation": "Information by AM Best rating.", "label": "Credit Rating, AM Best [Axis]", "terseLabel": "Credit Rating, AM Best [Axis]" } } }, "localname": "CreditRatingAMBestAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CreditRatingAMBestDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Credit rating as defined by AM Best.", "label": "Credit Rating, AM Best [Domain]", "terseLabel": "Credit Rating, AM Best [Domain]" } } }, "localname": "CreditRatingAMBestDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.", "label": "Cumulative Effect of New Accounting Principle in Period of Adoption", "terseLabel": "Cumulative adjustment to retained earnings" } } }, "localname": "CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CurrencyAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by currency.", "label": "Currency [Axis]", "terseLabel": "Currency [Axis]" } } }, "localname": "CurrencyAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefit": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails": { "order": 1.0, "parentTag": "us-gaap_CurrentIncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of current state, local, and federal tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Current Federal, State and Local, Tax Expense (Benefit)", "terseLabel": "Federal and state" } } }, "localname": "CurrentFederalStateAndLocalTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CurrentForeignTaxExpenseBenefit": { "auth_ref": [ "r186", "r492" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails": { "order": 2.0, "parentTag": "us-gaap_CurrentIncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Current Foreign Tax Expense (Benefit)", "terseLabel": "Foreign" } } }, "localname": "CurrentForeignTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CurrentIncomeTaxExpenseBenefit": { "auth_ref": [ "r13", "r179", "r489", "r494" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails": { "order": 1.0, "parentTag": "us-gaap_IncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.", "label": "Current Income Tax Expense (Benefit)", "totalLabel": "Total current (benefit) expense" } } }, "localname": "CurrentIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Current Income Tax Expense (Benefit), Continuing Operations [Abstract]", "terseLabel": "Current (benefit) expense:" } } }, "localname": "CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CustomerContractsMember": { "auth_ref": [ "r513" ], "lang": { "en-US": { "role": { "documentation": "Entity's established relationships with its customers through contracts.", "label": "Customer Contracts [Member]", "terseLabel": "Contract based intangibles (1)" } } }, "localname": "CustomerContractsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CustomerRelationshipsMember": { "auth_ref": [ "r513" ], "lang": { "en-US": { "role": { "documentation": "Customer relationship that exists between an entity and its customer, for example, but not limited to, tenant relationships.", "label": "Customer Relationships [Member]", "terseLabel": "Customer related intangibles" } } }, "localname": "CustomerRelationshipsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DebtDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Debt Disclosure [Abstract]" } } }, "localname": "DebtDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_DebtDisclosureTextBlock": { "auth_ref": [ "r94", "r365" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.", "label": "Debt Disclosure [Text Block]", "terseLabel": "Debt" } } }, "localname": "DebtDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/Debt" ], "xbrltype": "textBlockItemType" }, "us-gaap_DebtInstrumentAxis": { "auth_ref": [ "r68", "r70", "r71", "r618", "r622", "r674" ], "lang": { "en-US": { "role": { "documentation": "Information by type of debt instrument, including, but not limited to, draws against credit facilities.", "label": "Debt Instrument [Axis]", "terseLabel": "Debt Instrument [Axis]" } } }, "localname": "DebtInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "http://www.assurant.com/role/DebtSeniorNotesDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentFaceAmount": { "auth_ref": [ "r596", "r598" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Face (par) amount of debt instrument at time of issuance.", "label": "Debt Instrument, Face Amount", "verboseLabel": "Aggregate principal amount" } } }, "localname": "DebtInstrumentFaceAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentFairValue": { "auth_ref": [ "r575", "r579" ], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesFairValueDisclosureNonrecurring", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.", "label": "Debt Instrument, Fair Value Disclosure", "verboseLabel": "Debt" } } }, "localname": "DebtInstrumentFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentInterestRateStatedPercentage": { "auth_ref": [ "r98" ], "lang": { "en-US": { "role": { "documentation": "Contractual interest rate for funds borrowed, under the debt agreement.", "label": "Debt Instrument, Interest Rate, Stated Percentage", "terseLabel": "Senior notes interest rate" } } }, "localname": "DebtInstrumentInterestRateStatedPercentage", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DebtInstrumentLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Debt Instrument [Line Items]", "terseLabel": "Debt Instrument [Line Items]" } } }, "localname": "DebtInstrumentLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentNameDomain": { "auth_ref": [ "r99" ], "lang": { "en-US": { "role": { "documentation": "The name for the particular debt instrument or borrowing that distinguishes it from other debt instruments or borrowings, including draws against credit facilities.", "label": "Debt Instrument, Name [Domain]", "terseLabel": "Debt Instrument, Name [Domain]" } } }, "localname": "DebtInstrumentNameDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "http://www.assurant.com/role/DebtSeniorNotesDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DebtInstrumentPeriodicPaymentInterest": { "auth_ref": [ "r99" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of the required periodic payments applied to interest.", "label": "Debt Instrument, Periodic Payment, Interest", "terseLabel": "Senior notes interest payment" } } }, "localname": "DebtInstrumentPeriodicPaymentInterest", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentRepurchaseAmount": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value amount of debt instrument that was repurchased.", "label": "Debt Instrument, Repurchase Amount", "terseLabel": "Amount tendered for repurchase of debt", "verboseLabel": "Aggregate principal repurchased" } } }, "localname": "DebtInstrumentRepurchaseAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentTable": { "auth_ref": [ "r99", "r182", "r365", "r368", "r369", "r370", "r595", "r596", "r598", "r654" ], "lang": { "en-US": { "role": { "documentation": "A table or schedule providing information pertaining to long-term debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.", "label": "Schedule of Long-term Debt Instruments [Table]", "terseLabel": "Schedule of Long-term Debt Instruments [Table]" } } }, "localname": "DebtInstrumentTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentTerm": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Debt Instrument, Term", "terseLabel": "Term of debt instrument" } } }, "localname": "DebtInstrumentTerm", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "durationItemType" }, "us-gaap_DebtInstrumentsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Debt Instruments [Abstract]" } } }, "localname": "DebtInstrumentsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_DebtPolicyTextBlock": { "auth_ref": [ "r176", "r355" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy related to debt. Includes, but is not limited to, debt issuance costs, the effects of refinancings, method of amortizing debt issuance costs and original issue discount, and classifications of debt.", "label": "Debt, Policy [Policy Text Block]", "verboseLabel": "Debt" } } }, "localname": "DebtPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefit": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails": { "order": 1.0, "parentTag": "us-gaap_DeferredIncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred state, local, and federal tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred Federal, State and Local, Tax Expense (Benefit)", "terseLabel": "Federal and state" } } }, "localname": "DeferredFederalStateAndLocalTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredForeignIncomeTaxExpenseBenefit": { "auth_ref": [ "r15", "r179", "r491", "r494" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails": { "order": 2.0, "parentTag": "us-gaap_DeferredIncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred Foreign Income Tax Expense (Benefit)", "terseLabel": "Foreign" } } }, "localname": "DeferredForeignIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredIncomeTaxExpenseBenefit": { "auth_ref": [ "r15", "r168", "r179", "r491", "r494" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 21.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails": { "order": 2.0, "parentTag": "us-gaap_IncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred Income Tax Expense (Benefit)", "terseLabel": "Deferred tax (benefit) expense", "totalLabel": "Total deferred (benefit) expense" } } }, "localname": "DeferredIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]", "terseLabel": "Deferred (benefit) expense:" } } }, "localname": "DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DeferredIncomeTaxLiabilities": { "auth_ref": [ "r16", "r73", "r74", "r480", "r620", "r673" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 2.0, "parentTag": "us-gaap_DeferredTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred tax liability attributable to taxable temporary differences.", "label": "Deferred Tax Liabilities, Gross", "negatedTotalLabel": "Total deferred tax liability" } } }, "localname": "DeferredIncomeTaxLiabilities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense": { "auth_ref": [ "r659", "r713", "r725", "r731", "r733", "r736" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expense related to deferred policy acquisition costs.", "label": "Deferred Policy Acquisition Cost, Amortization Expense", "negatedLabel": "Amortization" } } }, "localname": "DeferredPolicyAcquisitionCostAmortizationExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DeferredAcquisitionCostsScheduleOfDeferredAcquisitionCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredPolicyAcquisitionCosts": { "auth_ref": [ "r691", "r722", "r730", "r734", "r739", "r787" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 6.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Net amount of deferred policy acquisition costs capitalized on contracts remaining in force as of the balance sheet date.", "label": "Deferred Policy Acquisition Costs", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance", "verboseLabel": "Deferred acquisition costs" } } }, "localname": "DeferredPolicyAcquisitionCosts", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/DeferredAcquisitionCostsScheduleOfDeferredAcquisitionCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredPolicyAcquisitionCostsAdditions": { "auth_ref": [ "r735" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Total amount of policy acquisition costs capitalized during the income statement period.", "label": "Deferred Policy Acquisition Costs, Additions", "verboseLabel": "Costs deferred" } } }, "localname": "DeferredPolicyAcquisitionCostsAdditions", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DeferredAcquisitionCostsScheduleOfDeferredAcquisitionCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredPolicyAcquisitionCostsDisclosuresAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Deferred Policy Acquisition Costs Disclosures [Abstract]" } } }, "localname": "DeferredPolicyAcquisitionCostsDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_DeferredPolicyAcquisitionCostsTableTextBlock": { "auth_ref": [ "r737" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the movement in deferred policy acquisition costs.", "label": "Deferred Policy Acquisition Costs [Table Text Block]", "terseLabel": "Schedule Of Deferred Acquisition Costs" } } }, "localname": "DeferredPolicyAcquisitionCostsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DeferredAcquisitionCostsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_DeferredPolicyAcquisitionCostsTextBlock1": { "auth_ref": [ "r737", "r738" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for deferred policy acquisition costs.", "label": "Deferred Policy Acquisition Costs [Text Block]", "verboseLabel": "Deferred Acquisition Costs" } } }, "localname": "DeferredPolicyAcquisitionCostsTextBlock1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DeferredAcquisitionCosts" ], "xbrltype": "textBlockItemType" }, "us-gaap_DeferredTaxAssetsGross": { "auth_ref": [ "r14", "r481" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 1.0, "parentTag": "us-gaap_DeferredTaxAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.", "label": "Deferred Tax Assets, Gross", "totalLabel": "Total deferred tax asset" } } }, "localname": "DeferredTaxAssetsGross", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsInvestments": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 3.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from investments (excludes investments in subsidiaries and equity method investments).", "label": "Deferred Tax Assets, Investments", "terseLabel": "Investments, net" } } }, "localname": "DeferredTaxAssetsInvestments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsNet": { "auth_ref": [ "r482" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 1.0, "parentTag": "us-gaap_DeferredTaxLiabilities", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.", "label": "Deferred Tax Assets, Net of Valuation Allowance", "totalLabel": "Deferred tax assets, net of valuation allowance" } } }, "localname": "DeferredTaxAssetsNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsNetAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Deferred Tax Assets, Net [Abstract]", "terseLabel": "Deferred Tax Assets" } } }, "localname": "DeferredTaxAssetsNetAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DeferredTaxAssetsOperatingLossCarryforwards": { "auth_ref": [ "r462", "r487", "r488" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 4.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.", "label": "Deferred Tax Assets, Operating Loss Carryforwards", "terseLabel": "Net operating loss carryforwards", "verboseLabel": "Net operating loss carryforwards corresponding to deferred tax assets" } } }, "localname": "DeferredTaxAssetsOperatingLossCarryforwards", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesNarrativeDetails", "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsOther": { "auth_ref": [ "r463", "r487", "r488" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 9.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.", "label": "Deferred Tax Assets, Other", "terseLabel": "Other" } } }, "localname": "DeferredTaxAssetsOther", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits": { "auth_ref": [ "r462", "r487", "r488" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 6.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs.", "label": "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits", "terseLabel": "Compensation related" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits": { "auth_ref": [ "r462", "r487", "r488" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 7.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from postretirement benefits.", "label": "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits", "terseLabel": "Employee and post-retirement benefits" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities": { "auth_ref": [ "r462", "r487", "r488" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 2.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.", "label": "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities", "terseLabel": "Accrued liabilities" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther": { "auth_ref": [ "r462", "r487", "r488" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 8.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves and accruals, classified as other.", "label": "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other", "terseLabel": "Unearned fee income" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsValuationAllowance": { "auth_ref": [ "r483" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 2.0, "parentTag": "us-gaap_DeferredTaxAssetsNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.", "label": "Deferred Tax Assets, Valuation Allowance", "negatedLabel": "Less valuation allowance", "terseLabel": "Cumulative valuation allowance against deferred tax assets" } } }, "localname": "DeferredTaxAssetsValuationAllowance", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesNarrativeDetails", "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxLiabilities": { "auth_ref": [ "r466", "r484" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.", "label": "Deferred Tax Liabilities, Net", "negatedTotalLabel": "Net deferred income tax liability" } } }, "localname": "DeferredTaxLiabilities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost": { "auth_ref": [ "r463", "r487", "r488" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 1.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount as of the balance sheet date of the estimated future tax effects attributable to policy acquisition costs being expensed for tax purposes but capitalized in conformity with generally accepted accounting principles, which will reverse in future periods when amortization of such capitalized costs cannot be deducted for tax purposes.", "label": "Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost", "negatedLabel": "Deferred acquisition costs" } } }, "localname": "DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxLiabilitiesInvestments": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails": { "order": 2.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from investments (excludes investments in subsidiaries and equity method investments).", "label": "Deferred Tax Liabilities, Investments", "negatedLabel": "Net unrealized appreciation on securities" } } }, "localname": "DeferredTaxLiabilitiesInvestments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxLiabilitiesNetAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Deferred Tax Liabilities, Net [Abstract]", "terseLabel": "Deferred Tax Liabilities" } } }, "localname": "DeferredTaxLiabilitiesNetAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndDeferredTaxLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]" } } }, "localname": "DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation": { "auth_ref": [ "r1", "r396" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.", "label": "Defined Benefit Plan, Accumulated Benefit Obligation", "verboseLabel": "Accumulated benefit obligation" } } }, "localname": "DefinedBenefitPlanAccumulatedBenefitObligation", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax": { "auth_ref": [ "r118", "r406" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.", "label": "Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax", "negatedTotalLabel": "Total recognized in accumulated other comprehensive (loss) income" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax": { "auth_ref": [ "r116", "r406" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.", "label": "Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax", "terseLabel": "Net (loss) gain" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax": { "auth_ref": [ "r39", "r119", "r406" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount related to the pretax cost of benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as components of net periodic benefit cost.", "label": "Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax", "negatedLabel": "Prior service (cost) credit" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets": { "auth_ref": [ "r3", "r4", "r386" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.", "label": "Defined Benefit Plan, Actual Return on Plan Assets", "verboseLabel": "Actual return on plan assets" } } }, "localname": "DefinedBenefitPlanActualReturnOnPlanAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanActuarialGainLoss": { "auth_ref": [ "r23", "r383" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.", "label": "Defined Benefit Plan, Actuarial Gain (Loss)", "negatedLabel": "Actuarial (loss) gain, including curtailments and settlements" } } }, "localname": "DefinedBenefitPlanActuarialGainLoss", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses": { "auth_ref": [ "r403" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 6.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of gains or losses recognized in net periodic benefit cost.", "label": "Defined Benefit Plan, Amortization of Gains (Losses)", "negatedLabel": "Amortization of net loss (gain)" } } }, "localname": "DefinedBenefitPlanAmortizationOfGainsLosses", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit": { "auth_ref": [ "r39", "r400" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.", "label": "Defined Benefit Plan, Amortization of Prior Service Cost (Credit)", "terseLabel": "Amortization of prior service cost" } } }, "localname": "DefinedBenefitPlanAmortizationOfPriorServiceCostCredit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmountToBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossNextFiscalYear": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation).", "label": "Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year", "terseLabel": "Net loss amortized from AOCI into net periodic benefit cost over the next fiscal year" } } }, "localname": "DefinedBenefitPlanAmountToBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossNextFiscalYear", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax": { "auth_ref": [ "r119", "r405" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before tax, after reclassification adjustments, of prior service cost (credit) that has not been recognized in the income statement.", "label": "Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax", "verboseLabel": "Prior service cost amortized from AOCI into net periodic benefit cost over the next fiscal year" } } }, "localname": "DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsCurrentAndNoncurrent": { "auth_ref": [ "r379", "r389", "r628", "r700" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This represents the entire assets recognized in the balance sheet that are associated with the defined benefit plans.", "label": "Defined Benefit Plan, Assets for Plan Benefits", "verboseLabel": "Assets" } } }, "localname": "DefinedBenefitPlanAssetsForPlanBenefitsCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountRecognizedInConsolidatedBalanceSheetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate": { "auth_ref": [ "r407" ], "lang": { "en-US": { "role": { "documentation": "The interest rate used to adjust for the time value of money for the plan.", "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate", "verboseLabel": "Discount rate" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate": { "auth_ref": [ "r407" ], "lang": { "en-US": { "role": { "documentation": "The interest rate used to adjust for the time value of money.", "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate", "verboseLabel": "Effective discount rate for service cost" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets": { "auth_ref": [ "r20", "r408" ], "lang": { "en-US": { "role": { "documentation": "An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.", "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets", "verboseLabel": "Expected long-term return on plan assets" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanBenefitObligation": { "auth_ref": [ "r2", "r40", "r380" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanFundedStatusOfPlan", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.", "label": "Defined Benefit Plan, Benefit Obligation", "negatedLabel": "Projected benefit obligation", "negatedPeriodEndLabel": "Projected benefit obligation at end of year", "negatedPeriodStartLabel": "Projected benefit obligation at beginning of year" } } }, "localname": "DefinedBenefitPlanBenefitObligation", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanBenefitsPaid": { "auth_ref": [ "r7", "r37", "r384", "r388", "r425" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.", "label": "Defined Benefit Plan, Benefits Paid", "verboseLabel": "Benefits paid" } } }, "localname": "DefinedBenefitPlanBenefitsPaid", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis": { "auth_ref": [ "r395", "r417" ], "lang": { "en-US": { "role": { "documentation": "Information by category of defined benefit plan assets.", "label": "Defined Benefit Plan, Asset Categories [Axis]", "terseLabel": "Defined Benefit Plan, Asset Categories [Axis]" } } }, "localname": "DefinedBenefitPlanByPlanAssetCategoriesAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]", "terseLabel": "Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]" } } }, "localname": "DefinedBenefitPlanChangeInBenefitObligationRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]", "terseLabel": "Change in plan assets" } } }, "localname": "DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanContributionsByEmployer": { "auth_ref": [ "r387", "r392", "r393", "r421", "r422" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of contributions made by the employer to defined benefit plans.", "label": "Defined Benefit Plan, Contributions by Employer", "verboseLabel": "Employer contributions" } } }, "localname": "DefinedBenefitPlanContributionsByEmployer", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanDisclosureLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Defined Benefit Plan Disclosure [Line Items]", "terseLabel": "Defined Benefit Plan Disclosure [Line Items]" } } }, "localname": "DefinedBenefitPlanDisclosureLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountRecognizedInConsolidatedBalanceSheetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1": { "auth_ref": [ "r410" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.", "label": "Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation", "negatedTerseLabel": "Effect on postretirement benefit obligation" } } }, "localname": "DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1": { "auth_ref": [ "r410" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.", "label": "Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components", "negatedTerseLabel": "Effect on total of service and interest cost components" } } }, "localname": "DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation": { "auth_ref": [ "r410" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.", "label": "Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation", "terseLabel": "Effect on postretirement benefit obligation" } } }, "localname": "DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents": { "auth_ref": [ "r410" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.", "label": "Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components", "terseLabel": "Effect on total of service and interest cost components" } } }, "localname": "DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter": { "auth_ref": [ "r397" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails": { "order": 1.0, "parentTag": "aiz_DefinedBenefitPlanExpectedFutureBenefitPayments", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter", "verboseLabel": "2023-2027" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths": { "auth_ref": [ "r397" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails": { "order": 4.0, "parentTag": "aiz_DefinedBenefitPlanExpectedFutureBenefitPayments", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months", "verboseLabel": "2018" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive": { "auth_ref": [ "r397" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails": { "order": 2.0, "parentTag": "aiz_DefinedBenefitPlanExpectedFutureBenefitPayments", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits from a defined benefit plan expected to be paid in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Defined Benefit Plan, Expected Future Benefit Payments, Year Five", "verboseLabel": "2022" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour": { "auth_ref": [ "r397" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails": { "order": 3.0, "parentTag": "aiz_DefinedBenefitPlanExpectedFutureBenefitPayments", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits from a defined benefit plan expected to be paid in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Defined Benefit Plan, Expected Future Benefit Payments, Year Four", "verboseLabel": "2021" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree": { "auth_ref": [ "r397" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails": { "order": 5.0, "parentTag": "aiz_DefinedBenefitPlanExpectedFutureBenefitPayments", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits from a defined benefit plan expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Defined Benefit Plan, Expected Future Benefit Payments, Year Three", "verboseLabel": "2020" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo": { "auth_ref": [ "r397" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails": { "order": 6.0, "parentTag": "aiz_DefinedBenefitPlanExpectedFutureBenefitPayments", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits from a defined benefit plan expected to be paid in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Defined Benefit Plan, Expected Future Benefit Payments, Year Two", "verboseLabel": "2019" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets": { "auth_ref": [ "r21", "r402" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.", "label": "Defined Benefit Plan, Expected Return on Plan Assets", "negatedLabel": "Expected return on plan assets" } } }, "localname": "DefinedBenefitPlanExpectedReturnOnPlanAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanFairValueOfPlanAssets": { "auth_ref": [ "r34", "r35", "r385", "r420" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanFundedStatusOfPlan", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.", "label": "Defined Benefit Plan, Fair Value of Plan Assets", "periodEndLabel": "Fair value of plan assets at end of year", "periodStartLabel": "Fair value of plan assets at beginning of year", "verboseLabel": "Fair value of plan assets" } } }, "localname": "DefinedBenefitPlanFairValueOfPlanAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanFundedPercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Plan assets of a defined benefit plan, as a percentage of projected benefit obligation.", "label": "Defined Benefit Plan, Funded Percentage", "terseLabel": "Funded status percentage" } } }, "localname": "DefinedBenefitPlanFundedPercentage", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanFundedStatusOfPlan": { "auth_ref": [ "r379", "r389" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.", "label": "Defined Benefit Plan, Funded Status of Plan", "totalLabel": "Funded status at end of year", "verboseLabel": "Projected benefit obligation at beginning of year" } } }, "localname": "DefinedBenefitPlanFundedStatusOfPlan", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanInterestCost": { "auth_ref": [ "r382", "r401" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 3.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.", "label": "Defined Benefit Plan, Interest Cost", "negatedLabel": "Interest cost", "terseLabel": "Interest cost" } } }, "localname": "DefinedBenefitPlanInterestCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost": { "auth_ref": [ "r399", "r406" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 2.0, "parentTag": "us-gaap_AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.", "label": "Defined Benefit Plan, Net Periodic Benefit Cost", "totalLabel": "Net periodic benefit cost" } } }, "localname": "DefinedBenefitPlanNetPeriodicBenefitCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments": { "auth_ref": [ "r36", "r404", "r419" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 16.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 7.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 }, "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails": { "order": 6.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of net gain (loss) recognized in net periodic benefit cost as a result of an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services.", "label": "Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments", "negatedTerseLabel": "Gain on pension plan curtailment", "terseLabel": "Gain on pension plan curtailment" } } }, "localname": "DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1": { "auth_ref": [ "r404" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 5.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of net gain (loss) recognized in net periodic benefit cost due to settlements and curtailments. Curtailments result from an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. Settlements result from an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits.", "label": "Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments", "negatedLabel": "Curtailment/settlement charge" } } }, "localname": "DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanServiceCost": { "auth_ref": [ "r42", "r381", "r400" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 4.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.", "label": "Defined Benefit Plan, Service Cost", "negatedLabel": "Service cost", "terseLabel": "Service cost" } } }, "localname": "DefinedBenefitPlanServiceCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations": { "auth_ref": [ "r394", "r416" ], "lang": { "en-US": { "role": { "documentation": "Target allocation of investments of this type to total plan assets presented on a weighted average basis.", "label": "Defined Benefit Plan, Target Plan Asset Allocations", "terseLabel": "Percentage Allocation of Plan Assets, Target" } } }, "localname": "DefinedBenefitPlanTargetPlanAssetAllocations", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum": { "auth_ref": [ "r394", "r416" ], "lang": { "en-US": { "role": { "documentation": "Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis.", "label": "Defined Benefit Plan, Target Plan Asset Allocations Range Maximum", "terseLabel": "Percentage Allocation of Plan Assets, High" } } }, "localname": "DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum": { "auth_ref": [ "r394", "r416" ], "lang": { "en-US": { "role": { "documentation": "Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis.", "label": "Defined Benefit Plan, Target Plan Asset Allocations Range Minimum", "terseLabel": "Percentage Allocation of Plan Assets, Low" } } }, "localname": "DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate": { "auth_ref": [ "r409" ], "lang": { "en-US": { "role": { "documentation": "The ultimate trend rate for health care costs.", "label": "Defined Benefit Plan, Ultimate Health Care Cost Trend Rate", "verboseLabel": "Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)" } } }, "localname": "DefinedBenefitPlanUltimateHealthCareCostTrendRate", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations": { "auth_ref": [ "r390", "r415" ], "lang": { "en-US": { "role": { "documentation": "Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.", "label": "Defined Benefit Plan, Actual Plan Asset Allocations", "terseLabel": "Weighted average plan asset allocation" } } }, "localname": "DefinedBenefitPlanWeightedAverageAssetAllocations", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear": { "auth_ref": [ "r398" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.", "label": "Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year", "terseLabel": "Future pension contributions" } } }, "localname": "DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedContributionPlanCostRecognized": { "auth_ref": [ "r426" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of the cost recognized during the period for defined contribution plans.", "label": "Defined Contribution Plan, Cost Recognized", "verboseLabel": "Amounts expensed by contribution plan" } } }, "localname": "DefinedContributionPlanCostRecognized", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of discretionary contributions made by an employer to a defined contribution plan.", "label": "Defined Contribution Plan, Employer Discretionary Contribution Amount", "terseLabel": "Employer contribution" } } }, "localname": "DefinedContributionPlanEmployerDiscretionaryContributionAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.", "label": "Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay", "terseLabel": "One-time contribution as a percentage of eligible pay" } } }, "localname": "DefinedContributionPlanEmployerMatchingContributionPercent", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_Depreciation": { "auth_ref": [ "r168", "r330" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.", "label": "Depreciation", "terseLabel": "Depreciation expenses" } } }, "localname": "Depreciation", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepreciationAmortizationAndAccretionNet": { "auth_ref": [ "r168" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 11.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.", "label": "Depreciation, Amortization and Accretion, Net", "terseLabel": "Depreciation and amortization" } } }, "localname": "DepreciationAmortizationAndAccretionNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeAssetFairValueGrossLiability": { "auth_ref": [ "r108", "r110", "r550" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.", "label": "Derivative Asset, Fair Value, Gross Liability", "terseLabel": "Amounts related to derivative liabilities" } } }, "localname": "DerivativeAssetFairValueGrossLiability", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeFairValueOfDerivativeAsset": { "auth_ref": [ "r107", "r109", "r550", "r611" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.", "label": "Derivative Asset, Fair Value, Gross Asset", "terseLabel": "Amounts related to derivative assets" } } }, "localname": "DerivativeFairValueOfDerivativeAsset", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeGainLossOnDerivativeNet": { "auth_ref": [ "r549", "r551" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.", "label": "Derivative, Gain (Loss) on Derivative, Net", "terseLabel": "Derivative gains (losses) recorded to income statement" } } }, "localname": "DerivativeGainLossOnDerivativeNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DirectPremiumsEarned": { "auth_ref": [ "r715", "r728", "r774" ], "calculation": { "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails": { "order": 1.0, "parentTag": "us-gaap_PremiumsEarnedNet", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums earned.", "label": "Direct Premiums Earned", "terseLabel": "Direct earned premiums", "verboseLabel": "Premiums, direct amount" } } }, "localname": "DirectPremiumsEarned", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DirectorMember": { "auth_ref": [ "r607" ], "lang": { "en-US": { "role": { "documentation": "Person serving on the board of directors (who collectively have responsibility for governing the entity).", "label": "Director [Member]", "terseLabel": "Director" } } }, "localname": "DirectorMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock": { "auth_ref": [ "r377", "r432", "r453", "r454", "r455", "r460" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.", "label": "Disclosure of Compensation Related Costs, Share-based Payments [Text Block]", "terseLabel": "Stock Based Compensation" } } }, "localname": "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensation" ], "xbrltype": "textBlockItemType" }, "us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock": { "auth_ref": [ "r432", "r453" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.", "label": "Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]", "terseLabel": "Summary of Share-based Compensation Activity" } } }, "localname": "DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Discontinued Operations and Disposal Groups [Abstract]" } } }, "localname": "DiscontinuedOperationsAndDisposalGroupsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_DisposalGroupClassificationAxis": { "auth_ref": [ "r19" ], "lang": { "en-US": { "role": { "documentation": "Information by disposal group classification.", "label": "Disposal Group Classification [Axis]", "terseLabel": "Disposal Group Classification [Axis]" } } }, "localname": "DisposalGroupClassificationAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DisposalGroupClassificationDomain": { "auth_ref": [ "r19" ], "lang": { "en-US": { "role": { "documentation": "Component or group of components disposed of, including but not limited to, disposal group held-for-sale or disposed of by sale, disposed of by means other than sale, and discontinued operations.", "label": "Disposal Group Classification [Domain]", "terseLabel": "Disposal Group Classification [Domain]" } } }, "localname": "DisposalGroupClassificationDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DisposalGroupDeferredGainOnDisposal": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The excess amount received or due over net assets in a transaction accounted for as a divestiture where a subsidiary, business or operating assets are \"sold\" by the entity to a newly formed, thinly capitalized, highly leveraged buyer. This gain is not yet recognized and is disclosed on the balance sheet as an offset against the carrying amount of the securities received.", "label": "Disposal Group, Deferred Gain on Disposal", "terseLabel": "Deferred gain on disposal" } } }, "localname": "DisposalGroupDeferredGainOnDisposal", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember": { "auth_ref": [ "r329", "r336" ], "lang": { "en-US": { "role": { "documentation": "Disposal group that has been sold. Excludes disposals classified as discontinued operations.", "label": "Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]", "terseLabel": "Disposal group, disposed of by sale, not discontinued operations" } } }, "localname": "DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DisposalGroupIncludingDiscontinuedOperationCash": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of currency on hand, demand deposits with banks or financial institutions, and other kinds of accounts that have the general characteristics of demand deposits, held by a disposal group.", "label": "Disposal Group, Including Discontinued Operation, Cash", "negatedTerseLabel": "Cash included in business classified as held for sale" } } }, "localname": "DisposalGroupIncludingDiscontinuedOperationCash", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.", "label": "Disposal Group, Including Discontinued Operation, Consideration", "terseLabel": "Cash consideration for line of business sold" } } }, "localname": "DisposalGroupIncludingDiscontinuedOperationConsideration", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal": { "auth_ref": [ "r329", "r335" ], "calculation": { "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.", "label": "Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal", "totalLabel": "Total", "verboseLabel": "Gain (loss) on disposal" } } }, "localname": "DisposalGroupNotDiscontinuedOperationGainLossOnDisposal", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DisposalGroupNotDiscontinuedOperationsMember": { "auth_ref": [ "r19" ], "lang": { "en-US": { "role": { "documentation": "Disposal group that is not classified as discontinued operations.", "label": "Disposal Group, Not Discontinued Operations [Member]", "terseLabel": "Disposal group, not discontinued operations" } } }, "localname": "DisposalGroupNotDiscontinuedOperationsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock": { "auth_ref": [ "r48", "r50", "r51", "r52", "r53", "r54", "r55", "r56", "r57", "r58", "r59", "r336", "r338" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.", "label": "Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]", "terseLabel": "Dispositions and Exit Activities" } } }, "localname": "DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivities" ], "xbrltype": "textBlockItemType" }, "us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain": { "auth_ref": [ "r19" ], "lang": { "en-US": { "role": { "documentation": "Name of disposal group.", "label": "Disposal Group Name [Domain]", "terseLabel": "Disposal Group Name [Domain]" } } }, "localname": "DisposalGroupsIncludingDiscontinuedOperationsNameDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DividendsCash": { "auth_ref": [ "r371", "r653" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.", "label": "Dividends, Cash", "negatedLabel": "Dividends" } } }, "localname": "DividendsCash", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DomesticCorporateDebtSecuritiesMember": { "auth_ref": [ "r266" ], "lang": { "en-US": { "role": { "documentation": "Debt securities issued by a domestic corporate entity (within the reporting entity's country of domicile).", "label": "Domestic Corporate Debt Securities [Member]", "terseLabel": "U.S. corporate" } } }, "localname": "DomesticCorporateDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EarningsPerShareAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share [Abstract]", "terseLabel": "Earnings Per Share" } } }, "localname": "EarningsPerShareAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasic": { "auth_ref": [ "r137", "r196", "r206", "r208", "r641", "r710" ], "calculation": { "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "lang": { "en-US": { "role": { "documentation": "The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.", "label": "Earnings Per Share, Basic", "netLabel": "Net income, basic (in dollars per share)", "totalLabel": "Net income, basic (in dollars per share)", "verboseLabel": "Basic (in dollars per share)" } } }, "localname": "EarningsPerShareBasic", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsOfOperationsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareBasicAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share, Basic [Abstract]", "terseLabel": "Earnings per common share \u2013 Basic", "verboseLabel": "Basic per share data:" } } }, "localname": "EarningsPerShareBasicAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsOfOperationsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasicDistributed": { "auth_ref": [ "r199", "r200", "r201", "r203" ], "calculation": { "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": 1.0, "parentTag": "us-gaap_EarningsPerShareBasic", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Dividends declared in the period and the contractual amount of dividends (or interest on participating income bonds) that must be paid per security.", "label": "Earnings Per Share, Basic, Distributed", "terseLabel": "Distributed earnings - Basic (in dollars per share)" } } }, "localname": "EarningsPerShareBasicDistributed", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareBasicLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]", "terseLabel": "Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]" } } }, "localname": "EarningsPerShareBasicLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasicOtherDisclosuresAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share, Basic, Other Disclosures [Abstract]", "terseLabel": "Share Data" } } }, "localname": "EarningsPerShareBasicOtherDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasicUndistributed": { "auth_ref": [ "r199", "r200", "r201", "r202", "r203" ], "calculation": { "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": 2.0, "parentTag": "us-gaap_EarningsPerShareBasic", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "The earnings attributable to each security on the basis that all of the earnings for the period had been distributed (to the extent that each security may share in earnings). This is the earnings amount which reflects the participation rights in undistributed earnings of each security.", "label": "Earnings Per Share, Basic, Undistributed", "terseLabel": "Undistributed earnings - Basic (in dollars per share)" } } }, "localname": "EarningsPerShareBasicUndistributed", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareDiluted": { "auth_ref": [ "r137", "r196", "r641", "r710" ], "calculation": { "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "lang": { "en-US": { "role": { "documentation": "The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.", "label": "Earnings Per Share, Diluted", "netLabel": "Net income, diluted (in dollars per share)", "totalLabel": "Net income - Diluted (in dollars per share)", "verboseLabel": "Diluted (in dollars per share)" } } }, "localname": "EarningsPerShareDiluted", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsOfOperationsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareDilutedAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share, Diluted [Abstract]", "terseLabel": "Earnings per common share \u2013 Diluted", "verboseLabel": "Diluted per share data:" } } }, "localname": "EarningsPerShareDilutedAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsOfOperationsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareDilutedDistributed": { "auth_ref": [ "r199", "r200", "r201", "r203" ], "calculation": { "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": 1.0, "parentTag": "us-gaap_EarningsPerShareDiluted", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Dividends declared in the period and the contractual amount of dividends (or interest on participating income bonds) that must be paid per security, taking into account all dilutive potential common shares outstanding during the period.", "label": "Earnings Per Share, Diluted, Distributed", "terseLabel": "Distributed earnings - Diluted (in dollars per share)" } } }, "localname": "EarningsPerShareDilutedDistributed", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareDilutedUndistributed": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": 2.0, "parentTag": "us-gaap_EarningsPerShareDiluted", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "The earnings attributable to each security on the basis that all of the earnings for the period had been distributed (to the extent that each security may share in earnings). This is the earnings amount which reflects the participation rights in undistributed earnings of each security, after giving effect to all dilutive potential common shares outstanding during the period.", "label": "Earnings Per Share, Diluted, Undistributed", "terseLabel": "Undistributed earnings - Diluted (in dollars per share)" } } }, "localname": "EarningsPerShareDilutedUndistributed", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerSharePolicyTextBlock": { "auth_ref": [ "r176", "r205", "r206", "r207" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.", "label": "Earnings Per Share, Policy [Policy Text Block]", "verboseLabel": "Earnings Per Share" } } }, "localname": "EarningsPerSharePolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_EarningsPerShareTextBlock": { "auth_ref": [ "r141", "r196", "r198", "r204", "r208" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for earnings per share.", "label": "Earnings Per Share [Text Block]", "terseLabel": "Earnings per common share" } } }, "localname": "EarningsPerShareTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShare" ], "xbrltype": "textBlockItemType" }, "us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents": { "auth_ref": [ "r590" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies.", "label": "Effect of Exchange Rate on Cash and Cash Equivalents", "terseLabel": "Effect of exchange rate changes on cash and cash equivalents" } } }, "localname": "EffectOfExchangeRateOnCashAndCashEquivalents", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_EffectOfFourthQuarterEventsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Effect of Fourth Quarter Events [Line Items]", "terseLabel": "Effect of Fourth Quarter Events [Line Items]" } } }, "localname": "EffectOfFourthQuarterEventsLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EffectiveIncomeTaxRateContinuingOperations": { "auth_ref": [ "r185", "r467", "r468" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "lang": { "en-US": { "role": { "documentation": "Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.", "label": "Effective Income Tax Rate Reconciliation, Percent", "totalLabel": "Effective income tax rate" } } }, "localname": "EffectiveIncomeTaxRateContinuingOperations", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": { "auth_ref": [ "r467", "r468", "r493" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails": { "order": 1.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).", "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent", "terseLabel": "Federal income tax rate" } } }, "localname": "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfBusiness": { "auth_ref": [ "r467", "r468", "r493" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails": { "order": 6.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to disposition of a business not qualifying as a discontinued operation.", "label": "Effective Income Tax Rate Reconciliation, Disposition of Business, Percent", "terseLabel": "Sale of subsidiary" } } }, "localname": "EffectiveIncomeTaxRateReconciliationDispositionOfBusiness", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost": { "auth_ref": [ "r467", "r468", "r493" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails": { "order": 4.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to equity-based compensation costs.", "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent", "terseLabel": "Non-deductible compensation" } } }, "localname": "EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments": { "auth_ref": [ "r467", "r468", "r493" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails": { "order": 7.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.", "label": "Effective Income Tax Rate Reconciliation, Other Adjustments, Percent", "terseLabel": "Other" } } }, "localname": "EffectiveIncomeTaxRateReconciliationOtherAdjustments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercentAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent [Abstract]", "terseLabel": "Reconciling items:" } } }, "localname": "EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercentAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes": { "auth_ref": [ "r467", "r468", "r493" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails": { "order": 8.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense.", "label": "Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent", "terseLabel": "Change in liability for prior year tax" } } }, "localname": "EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign": { "auth_ref": [ "r467", "r468", "r493" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails": { "order": 3.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": -1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign tax credit.", "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Percent", "negatedTerseLabel": "Foreign earnings" } } }, "localname": "EffectiveIncomeTaxRateReconciliationTaxCreditsForeign", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesReconciliationOfFederalIncomeTaxRateDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectsOfReinsuranceLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Effects of Reinsurance [Line Items]", "terseLabel": "Effects of Reinsurance [Line Items]" } } }, "localname": "EffectsOfReinsuranceLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EffectsOfReinsuranceTable": { "auth_ref": [ "r776" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about the effects of reinsurance, including, but not limited to, disclosure of direct, assumed, and ceded insurance.", "label": "Effects of Reinsurance [Table]", "terseLabel": "Effects of Reinsurance [Table]" } } }, "localname": "EffectsOfReinsuranceTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized": { "auth_ref": [ "r452" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Unrecognized cost of unvested share-based compensation awards.", "label": "Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized", "terseLabel": "Unrecognized compensation cost" } } }, "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1": { "auth_ref": [ "r452" ], "lang": { "en-US": { "role": { "documentation": "Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition", "terseLabel": "Unrecognized compensation cost expected to be recognized over a weighted-average period (in years)" } } }, "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense": { "auth_ref": [ "r450" ], "calculation": { "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails": { "order": 2.0, "parentTag": "us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.", "label": "Employee Service Share-based Compensation, Tax Benefit from Compensation Expense", "negatedTerseLabel": "Income tax benefit", "terseLabel": "Compensation expenses income tax benefit" } } }, "localname": "EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EquipmentMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tangible personal property used to produce goods and services.", "label": "Equipment [Member]", "terseLabel": "Equipment" } } }, "localname": "EquipmentMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Equity [Abstract]" } } }, "localname": "EquityAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_EquityComponentDomain": { "auth_ref": [ "r364" ], "lang": { "en-US": { "role": { "documentation": "Components of equity are the parts of the total Equity balance including that which is allocated to common, preferred, treasury stock, retained earnings, etc.", "label": "Equity Component [Domain]", "terseLabel": "Equity Component [Domain]" } } }, "localname": "EquityComponentDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EquitySecuritiesInvestmentSummaryMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "This element provides types of investments that may be contained within the equity securities category. Examples of items within this category may include common stocks and nonredeemable preferred stocks which may, at a minimum, be further categorized by investments in companies within the following industries: (1) public utilities; (2) banks, trust and insurance companies; (3) industrial, miscellaneous and all other.", "label": "Equity Securities, Investment Summary [Member]", "terseLabel": "Equity securities:" } } }, "localname": "EquitySecuritiesInvestmentSummaryMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EquitySecuritiesMember": { "auth_ref": [ "r64", "r69", "r255", "r627", "r675", "r799" ], "lang": { "en-US": { "role": { "documentation": "Ownership interest or right to acquire or dispose of ownership interest in corporations and other legal entities for which ownership interest is represented by shares of common or preferred stock, convertible securities, stock rights, or stock warrants.", "label": "Equity Securities [Member]", "terseLabel": "Equity securities" } } }, "localname": "EquitySecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis": { "auth_ref": [ "r191", "r192", "r193" ], "lang": { "en-US": { "role": { "documentation": "Information by type of error correction.", "label": "Adjustments for Error Corrections [Axis]", "terseLabel": "Adjustments for Error Corrections [Axis]" } } }, "localname": "ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Error Corrections and Prior Period Adjustments Restatement [Line Items]", "terseLabel": "Error Corrections and Prior Period Adjustments Restatement [Line Items]" } } }, "localname": "ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EuropeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Continent of Europe.", "label": "Europe [Member]", "terseLabel": "Europe" } } }, "localname": "EuropeMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearFive": { "auth_ref": [ "r668" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Expected amortization expense in the fifth year after the balance sheet date of the present value of the future profits of long-duration contracts acquired in a purchase of an insurance enterprise.", "label": "Expected Amortization Expense of Ending Present Value of Future Insurance Profits, Year Five", "terseLabel": "2022" } } }, "localname": "ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearFive", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearFour": { "auth_ref": [ "r668" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Expected amortization expense in the fourth year after the balance sheet date of the present value of the future profits of long-duration contracts acquired in a purchase of an insurance enterprise.", "label": "Expected Amortization Expense of Ending Present Value of Future Insurance Profits, Year Four", "terseLabel": "2021" } } }, "localname": "ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearFour", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearOne": { "auth_ref": [ "r668" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Expected amortization expense in the first year after the balance sheet date of the present value of the future profits of long-duration contracts acquired in a purchase of an insurance enterprise.", "label": "Expected Amortization Expense of Ending Present Value of Future Insurance Profits, Year One", "terseLabel": "2018" } } }, "localname": "ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearOne", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearThree": { "auth_ref": [ "r668" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Expected amortization expense in the third year after the balance sheet date of the present value of the future profits of long-duration contracts acquired in a purchase of an insurance enterprise.", "label": "Expected Amortization Expense of Ending Present Value of Future Insurance Profits, Year Three", "terseLabel": "2020" } } }, "localname": "ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearThree", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearTwo": { "auth_ref": [ "r668" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Expected amortization expense in the second year after the balance sheet date of the present value of the future profits of long-duration contracts acquired in a purchase of an insurance enterprise.", "label": "Expected Amortization Expense of Ending Present Value of Future Insurance Profits, Year Two", "terseLabel": "2019" } } }, "localname": "ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsYearTwo", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ExternalCreditRatingByGroupingAxis": { "auth_ref": [ "r245", "r351", "r554", "r788" ], "lang": { "en-US": { "role": { "documentation": "Information by external rating classified as investment grade or non investment grade.", "label": "External Credit Rating by Grouping [Axis]", "terseLabel": "External Credit Rating by Grouping [Axis]" } } }, "localname": "ExternalCreditRatingByGroupingAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ExternalCreditRatingByGroupingDomain": { "auth_ref": [ "r350", "r553" ], "lang": { "en-US": { "role": { "documentation": "External credit rating classified as investment grade or non-investment grade.", "label": "External Credit Rating by Grouping [Domain]", "terseLabel": "External Credit Rating by Grouping [Domain]" } } }, "localname": "ExternalCreditRatingByGroupingDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]", "terseLabel": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": { "auth_ref": [ "r557", "r558", "r559", "r560", "r568", "r569" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.", "label": "Fair Value Measurements, Recurring and Nonrecurring [Table]", "terseLabel": "Fair Value Measurements, Recurring and Nonrecurring [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsLevel1ToLevel2TransfersAmount": { "auth_ref": [ "r560" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.", "label": "Fair Value, Assets, Level 1 to Level 2 Transfers, Amount", "terseLabel": "Transfers between Level 1 and Level 2 financial assets" } } }, "localname": "FairValueAssetsLevel1ToLevel2TransfersAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock": { "auth_ref": [ "r557", "r558", "r559", "r561" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3).", "label": "Fair Value Measurements, Nonrecurring [Table Text Block]", "terseLabel": "Carrying Value And Fair Value Of The Financial Instruments That Are Not Recognized Or Are Not Carried At Fair Value" } } }, "localname": "FairValueAssetsMeasuredOnNonrecurringBasisTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain": { "auth_ref": [ "r562", "r569" ], "lang": { "en-US": { "role": { "documentation": "Class of asset.", "label": "Asset Class [Domain]", "terseLabel": "Asset Class [Domain]" } } }, "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]", "terseLabel": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]" } } }, "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]", "terseLabel": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]" } } }, "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable": { "auth_ref": [ "r562", "r569" ], "lang": { "en-US": { "role": { "documentation": "Schedule of information required and determined to be provided for purposes of reconciling beginning and ending balances of fair value measurements of assets using significant unobservable inputs (level 3). Such reconciliation, separately presenting changes during the period, at a minimum, may include, but is not limited to: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.", "label": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]", "terseLabel": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]" } } }, "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock": { "auth_ref": [ "r562", "r569" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.", "label": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]", "terseLabel": "Change In Balance Sheet Carrying Value Associated With Level 3 Financial Assets Carried At Fair Value" } } }, "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]", "terseLabel": "Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]" } } }, "localname": "FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByAssetClassAxis": { "auth_ref": [ "r558", "r569" ], "lang": { "en-US": { "role": { "documentation": "Information by class of asset.", "label": "Asset Class [Axis]", "terseLabel": "Asset Class [Axis]" } } }, "localname": "FairValueByAssetClassAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByBalanceSheetGroupingTable": { "auth_ref": [ "r558", "r574", "r575", "r578", "r579", "r586" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.", "label": "Fair Value, by Balance Sheet Grouping [Table]", "terseLabel": "Fair Value, by Balance Sheet Grouping [Table]" } } }, "localname": "FairValueByBalanceSheetGroupingTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByFairValueHierarchyLevelAxis": { "auth_ref": [ "r559" ], "lang": { "en-US": { "role": { "documentation": "Information by level within the fair value hierarchy.", "label": "Fair Value, Hierarchy [Axis]", "terseLabel": "Fair Value, Hierarchy [Axis]" } } }, "localname": "FairValueByFairValueHierarchyLevelAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByLiabilityClassAxis": { "auth_ref": [ "r567", "r569" ], "lang": { "en-US": { "role": { "documentation": "Information by class of liability.", "label": "Liability Class [Axis]", "terseLabel": "Liability Class [Axis]" } } }, "localname": "FairValueByLiabilityClassAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementBasisAxis": { "auth_ref": [ "r558", "r570" ], "lang": { "en-US": { "role": { "documentation": "Information by measurement basis.", "label": "Measurement Basis [Axis]", "terseLabel": "Measurement Basis [Axis]" } } }, "localname": "FairValueByMeasurementBasisAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementFrequencyAxis": { "auth_ref": [ "r557" ], "lang": { "en-US": { "role": { "documentation": "Information by measurement frequency.", "label": "Measurement Frequency [Axis]", "terseLabel": "Measurement Frequency [Axis]" } } }, "localname": "FairValueByMeasurementFrequencyAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosureItemAmountsDomain": { "auth_ref": [ "r558", "r574", "r575", "r578", "r579", "r586" ], "lang": { "en-US": { "role": { "documentation": "Measurement basis, for example, but not limited to, reported value, fair value, portion at fair value, portion at other than fair value.", "label": "Fair Value Measurement [Domain]", "terseLabel": "Fair Value Measurement [Domain]" } } }, "localname": "FairValueDisclosureItemAmountsDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueDisclosuresAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Fair Value Disclosures [Abstract]" } } }, "localname": "FairValueDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresTextBlock": { "auth_ref": [ "r567", "r577", "r580", "r584", "r585", "r587" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.", "label": "Fair Value Disclosures [Text Block]", "terseLabel": "Fair Value Disclosures" } } }, "localname": "FairValueDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosures" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueInputsLevel1Member": { "auth_ref": [ "r27", "r559" ], "lang": { "en-US": { "role": { "documentation": "Quoted prices in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.", "label": "Fair Value, Inputs, Level 1 [Member]", "terseLabel": "Level 1" } } }, "localname": "FairValueInputsLevel1Member", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel2Member": { "auth_ref": [ "r28", "r30", "r556", "r559" ], "lang": { "en-US": { "role": { "documentation": "Inputs other than quoted prices included within level 1 that are observable for an asset or liability, either directly or indirectly, including, but not limited to, quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in inactive markets.", "label": "Fair Value, Inputs, Level 2 [Member]", "terseLabel": "Level 2" } } }, "localname": "FairValueInputsLevel2Member", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel3Member": { "auth_ref": [ "r29", "r559" ], "lang": { "en-US": { "role": { "documentation": "Unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Inputs, Level 3 [Member]", "terseLabel": "Level 3" } } }, "localname": "FairValueInputsLevel3Member", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments": { "auth_ref": [ "r571" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).", "label": "Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments", "terseLabel": "Unfunded commitments" } } }, "localname": "FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain": { "auth_ref": [ "r562", "r569" ], "lang": { "en-US": { "role": { "documentation": "Represents classes of liabilities measured and disclosed at fair value.", "label": "Fair Value by Liability Class [Domain]", "terseLabel": "Fair Value by Liability Class [Domain]" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementFrequencyDomain": { "auth_ref": [ "r557", "r567" ], "lang": { "en-US": { "role": { "documentation": "Provides the general categories used to describe the frequency with which financial assets and liabilities (as defined) are measured at fair value (on a recurring or nonrecurring basis).", "label": "Fair Value, Measurement Frequency [Domain]", "terseLabel": "Fair Value, Measurement Frequency [Domain]" } } }, "localname": "FairValueMeasurementFrequencyDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for fair value measurements of financial and non-financial assets, liabilities and instruments classified in shareholders' equity. Disclosures include, but are not limited to, how an entity that manages a group of financial assets and liabilities on the basis of its net exposure measures the fair value of those assets and liabilities.", "label": "Fair Value Measurement, Policy [Policy Text Block]", "terseLabel": "Fair Value" } } }, "localname": "FairValueMeasurementPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3": { "auth_ref": [ "r566" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3", "negatedLabel": "Transfers into Level 3, liabilities" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3": { "auth_ref": [ "r566" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3", "verboseLabel": "Transfers out of Level 3, liabilities" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1": { "auth_ref": [ "r563" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings", "terseLabel": "Total (losses) gains (realized/unrealized) included in earnings, assets" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss": { "auth_ref": [ "r564" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)", "terseLabel": "Net unrealized (losses) gains included in other comprehensive income, assets" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases": { "auth_ref": [ "r565" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases", "terseLabel": "Purchases, assets" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales": { "auth_ref": [ "r565" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales", "negatedLabel": "Sales, assets" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3": { "auth_ref": [ "r566" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3", "terseLabel": "Transfers into Level 3, assets" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3": { "auth_ref": [ "r566" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3", "negatedLabel": "Transfers out of Level 3, assets" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue": { "auth_ref": [ "r562" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value", "periodEndLabel": "Balance, end of period, assets", "periodStartLabel": "Balance, beginning of period, assets" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings": { "auth_ref": [ "r563" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings", "terseLabel": "Total (losses) gains (realized/unrealized) included in earnings, liabilities" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome": { "auth_ref": [ "r564" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)", "negatedLabel": "Net unrealized (losses) gains included in other comprehensive income, liabilities" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases": { "auth_ref": [ "r565" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases", "negatedTerseLabel": "Purchases, liabilities" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales": { "auth_ref": [ "r565" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of sales of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales", "terseLabel": "Sales, liabilities" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue": { "auth_ref": [ "r562" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value", "negatedPeriodEndLabel": "Balance, end of period, liabilities", "negatedPeriodStartLabel": "Balance, beginning of period, liabilities" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Categories used to prioritize the inputs to valuation techniques to measure fair value.", "label": "Fair Value Hierarchy [Domain]", "terseLabel": "Fair Value Hierarchy [Domain]" } } }, "localname": "FairValueMeasurementsFairValueHierarchyDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsNonrecurringMember": { "auth_ref": [ "r557", "r567" ], "lang": { "en-US": { "role": { "documentation": "This item represents a description of the frequency with which certain items are measured at fair value. Items measured at fair value on a nonrecurring basis generally include those items for which measurement inputs are not readily available and which are measured at fair value infrequently (for example, impaired assets).", "label": "Fair Value, Measurements, Nonrecurring [Member]", "terseLabel": "Nonrecurring" } } }, "localname": "FairValueMeasurementsNonrecurringMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancialGuaranteeInsuranceSegmentMember": { "auth_ref": [ "r665", "r726", "r728", "r761" ], "lang": { "en-US": { "role": { "documentation": "Product line consisting of insurance against financial default.", "label": "Financial Guarantee Insurance Product Line [Member]", "terseLabel": "Global credit and other" } } }, "localname": "FinancialGuaranteeInsuranceSegmentMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancialServicesSectorMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Sector of the economy consisting of companies engaged in financial services.", "label": "Financial Services Sector [Member]", "terseLabel": "Financial Services Sector" } } }, "localname": "FinancialServicesSectorMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease": { "auth_ref": [ "r242" ], "lang": { "en-US": { "role": { "documentation": "The increase (decrease) in the allowance for credit losses related to financing receivables.", "label": "Financing Receivable, Allowance for Credit Losses, Period Increase (Decrease)", "negatedTerseLabel": "Loan valuation allowance decrease" } } }, "localname": "FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock": { "auth_ref": [ "r245", "r249" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics.", "label": "Financing Receivable Credit Quality Indicators [Table Text Block]", "terseLabel": "Credit Quality Indicators For Commercial Mortgage Loans" } } }, "localname": "FinancingReceivableCreditQualityIndicatorsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FinancingReceivablePortfolioSegmentAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by the level at which an entity develops and documents a systematic methodology to determine its allowance for credit losses.", "label": "Financing Receivable Portfolio Segment [Axis]", "terseLabel": "Financing Receivable Portfolio Segment [Axis]" } } }, "localname": "FinancingReceivablePortfolioSegmentAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivablePortfolioSegmentDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Level at which an entity develops and documents a systematic methodology to determine its allowance for credit losses.", "label": "Financing Receivable Portfolio Segment [Domain]", "terseLabel": "Financing Receivable Portfolio Segment [Domain]" } } }, "localname": "FinancingReceivablePortfolioSegmentDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Financing Receivable, Recorded Investment [Line Items]", "terseLabel": "Financing Receivable, Recorded Investment [Line Items]" } } }, "localname": "FinancingReceivableRecordedInvestmentLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FiniteLivedIntangibleAssetUsefulLife": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Finite-Lived Intangible Asset, Useful Life", "terseLabel": "Intangible asset useful life" } } }, "localname": "FiniteLivedIntangibleAssetUsefulLife", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "durationItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization": { "auth_ref": [ "r323" ], "calculation": { "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails": { "order": 1.0, "parentTag": "us-gaap_IntangibleAssetsNetExcludingGoodwill", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.", "label": "Finite-Lived Intangible Assets, Accumulated Amortization", "negatedLabel": "Accumulated Amortization" } } }, "localname": "FiniteLivedIntangibleAssetsAccumulatedAmortization", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis": { "auth_ref": [ "r318", "r322" ], "lang": { "en-US": { "role": { "documentation": "Information by major type or class of finite-lived intangible assets.", "label": "Finite-Lived Intangible Assets by Major Class [Axis]", "terseLabel": "Finite-Lived Intangible Assets by Major Class [Axis]" } } }, "localname": "FiniteLivedIntangibleAssetsByMajorClassAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsTables", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FiniteLivedIntangibleAssetsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Finite-Lived Intangible Assets [Line Items]", "terseLabel": "Finite-Lived Intangible Assets [Line Items]" } } }, "localname": "FiniteLivedIntangibleAssetsLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsTables", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain": { "auth_ref": [ "r318", "r322" ], "lang": { "en-US": { "role": { "documentation": "The major class of finite-lived intangible asset (for example, patents, trademarks, copyrights, etc.) A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.", "label": "Finite-Lived Intangible Assets, Major Class Name [Domain]", "terseLabel": "Finite-Lived Intangible Assets, Major Class Name [Domain]" } } }, "localname": "FiniteLivedIntangibleAssetsMajorClassNameDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsTables", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FiniteLivedIntangibleAssetsNet": { "auth_ref": [ "r323" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.", "label": "Finite-Lived Intangible Assets, Net", "terseLabel": "Total", "verboseLabel": "Total" } } }, "localname": "FiniteLivedIntangibleAssetsNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsNetAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Finite-Lived Intangible Assets, Net [Abstract]" } } }, "localname": "FiniteLivedIntangibleAssetsNetAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_FinitelivedIntangibleAssetsAcquired1": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.", "label": "Finite-lived Intangible Assets Acquired", "terseLabel": "Intangible assets acquired" } } }, "localname": "FinitelivedIntangibleAssetsAcquired1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FixedMaturitiesMember": { "auth_ref": [ "r786" ], "lang": { "en-US": { "role": { "documentation": "This element provides types of investments that may be contained within the fixed maturity category which are securities having a stated final repayment date. Examples of items within this category may include bonds, including convertibles and bonds with warrants, and redeemable preferred stocks.", "label": "Fixed Maturities [Member]", "verboseLabel": "Fixed maturity securities" } } }, "localname": "FixedMaturitiesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ForeignCountryMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Designated tax departments of governments entitled to levy and collect income taxes from the entity outside the entity's country of domicile.", "label": "Foreign Tax Authority [Member]", "terseLabel": "Foreign countries" } } }, "localname": "ForeignCountryMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfFinancialInformationByGeographicLocationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock": { "auth_ref": [ "r176", "r589", "r593" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for (1) transactions denominated in a currency other than the reporting enterprise's functional currency, (2) translating foreign currency financial statements that are incorporated into the financial statements of the reporting enterprise by consolidation, combination, or the equity method of accounting, and (3) remeasurement of the financial statements of a foreign reporting enterprise in a hyperinflationary economy.", "label": "Foreign Currency Transactions and Translations Policy [Policy Text Block]", "verboseLabel": "Foreign Currency Translation" } } }, "localname": "ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ForeignGovernmentDebtMember": { "auth_ref": [ "r266" ], "lang": { "en-US": { "role": { "documentation": "Debt securities (such as bonds) issued by a national, local, or municipal government not within the country of domicile of the entity.", "label": "Foreign Government Debt [Member]", "terseLabel": "Foreign governments" } } }, "localname": "ForeignGovernmentDebtMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ForeignGovernmentDebtSecuritiesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Debt securities issued by a national, local, or municipal government not within the country of domicile of the reporting entity.", "label": "Foreign Government Debt Securities [Member]", "terseLabel": "Foreign governments" } } }, "localname": "ForeignGovernmentDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FundsHeldUnderReinsuranceAgreementsLiability": { "auth_ref": [ "r703" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 6.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 }, "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 3.0, "parentTag": "us-gaap_LiabilitiesFairValueDisclosureNonrecurring", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of funds held as security for payments to be received under reinsurance contracts.", "label": "Funds Held under Reinsurance Agreements, Liability", "terseLabel": "Funds withheld under reinsurance", "verboseLabel": "Funds held under reinsurance" } } }, "localname": "FundsHeldUnderReinsuranceAgreementsLiability", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FurnitureAndFixturesGross": { "auth_ref": [ "r331" ], "calculation": { "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails": { "order": 2.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.", "label": "Furniture and Fixtures, Gross", "terseLabel": "Furniture, fixtures and equipment" } } }, "localname": "FurnitureAndFixturesGross", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FurnitureAndFixturesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.", "label": "Furniture and Fixtures [Member]", "terseLabel": "Furniture" } } }, "localname": "FurnitureAndFixturesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_GainLossOnDispositionOfAssets": { "auth_ref": [ "r49", "r336" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.", "label": "Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property", "terseLabel": "Gain on sale of building" } } }, "localname": "GainLossOnDispositionOfAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnDispositionOfAssets1": { "auth_ref": [ "r329" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.", "label": "Gain (Loss) on Disposition of Assets", "terseLabel": "Gain on sale of assets" } } }, "localname": "GainLossOnDispositionOfAssets1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnInvestments": { "auth_ref": [ "r144", "r169", "r265", "r294" ], "calculation": { "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments.", "label": "Gain (Loss) on Investments", "totalLabel": "Total net realized gains" } } }, "localname": "GainLossOnInvestments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments": { "auth_ref": [ "r133" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": 4.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 }, "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 3.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 }, "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails": { "order": 1.0, "parentTag": "us-gaap_GainLossOnInvestments", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting.", "label": "Gain (Loss) on Investments, Excluding Other than Temporary Impairments", "terseLabel": "Net realized gains on investments, excluding other-than-temporary impairment losses", "verboseLabel": "Net realized gains (losses) related to sales and other" } } }, "localname": "GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnInvestmentsTextBlock": { "auth_ref": [ "r258", "r265", "r293", "r296", "r297", "r300" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments.", "label": "Gain (Loss) on Investments [Table Text Block]", "terseLabel": "Proceeds From Sales Of Available-For-Sale Securities And The Gross Realized Gains And Gross Realized Losses" } } }, "localname": "GainLossOnInvestmentsTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_GainLossOnSaleOfBusiness": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment.", "label": "Gain (Loss) on Disposition of Business", "negatedTerseLabel": "Loss on disposition of supplemental business" } } }, "localname": "GainLossOnSaleOfBusiness", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnSecuritizationOfFinancialAssets": { "auth_ref": [ "r145" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "A gain (loss) realized on a transfer, accounted for as a sale, of all or a portion of financial assets in which the transferor surrenders control and receives consideration other than a beneficial interest in the assets transferred. Reflects the amount of sales proceeds in excess of, or deficient from, the sum of the carrying amounts of transferred financial assets plus transaction costs.", "label": "Gain (Loss) on Securitization of Financial Assets", "terseLabel": "Realized gain on securitization" } } }, "localname": "GainLossOnSecuritizationOfFinancialAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainsLossesOnExtinguishmentOfDebt": { "auth_ref": [ "r168", "r357", "r358" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 13.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 5.0, "parentTag": "us-gaap_BenefitsLossesAndExpenses", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.", "label": "Gain (Loss) on Extinguishment of Debt", "negatedLabel": "Loss on extinguishment of debt", "negatedTerseLabel": "Loss on extinguishment of debt" } } }, "localname": "GainsLossesOnExtinguishmentOfDebt", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/DebtSeniorNotesDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GeneralAndAdministrativeExpense": { "auth_ref": [ "r142" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.", "label": "General and Administrative Expense", "terseLabel": "General and administrative expenses" } } }, "localname": "GeneralAndAdministrativeExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GeographicConcentrationRiskMember": { "auth_ref": [ "r213" ], "lang": { "en-US": { "role": { "documentation": "Reflects the percentage that a specified dollar value on the balance sheet or income statement in the period from one or more specified geographic areas is to a corresponding consolidated, segment, or product line amount. Risk is the materially adverse effects of economic decline or antagonistic political actions resulting in loss of assets, sales volume, labor supply, or source of materials and supplies in a US state or a specified country, continent, or region such as EMEA (Europe, Middle East, Africa).", "label": "Geographic Concentration Risk [Member]", "terseLabel": "Geographic Concentration Risk" } } }, "localname": "GeographicConcentrationRiskMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Goodwill": { "auth_ref": [ "r304", "r306", "r307" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 9.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.", "label": "Goodwill", "periodEndLabel": "Goodwill, ending balance", "periodStartLabel": "Goodwill, beginning balance", "terseLabel": "Goodwill", "verboseLabel": "Goodwill acquired" } } }, "localname": "Goodwill", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillAcquiredDuringPeriod": { "auth_ref": [ "r309" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.", "label": "Goodwill, Acquired During Period", "terseLabel": "Goodwill acquired", "verboseLabel": "Acquisitions" } } }, "localname": "GoodwillAcquiredDuringPeriod", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Goodwill and Intangible Assets Disclosure [Abstract]" } } }, "localname": "GoodwillAndIntangibleAssetsDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy": { "auth_ref": [ "r176", "r313" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for goodwill. This accounting policy also may address how an entity assesses and measures impairment of goodwill, how reporting units are determined, how goodwill is allocated to such units, and how the fair values of the reporting units are determined.", "label": "Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]", "verboseLabel": "Goodwill" } } }, "localname": "GoodwillAndIntangibleAssetsGoodwillPolicy", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy": { "auth_ref": [ "r176", "r320" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for intangible assets. This accounting policy may address both intangible assets subject to amortization and those that are not. The following also may be disclosed: (1) a description of intangible assets (2) the estimated useful lives of those assets (3) the amortization method used (4) how the entity assesses and measures impairment of such assets (5) how future cash flows are estimated (6) how the fair values of such asset are determined.", "label": "Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]", "terseLabel": "Other Intangible Assets" } } }, "localname": "GoodwillAndIntangibleAssetsIntangibleAssetsPolicy", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_GoodwillDisclosureTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for goodwill.", "label": "Goodwill Disclosure [Text Block]", "terseLabel": "Goodwill" } } }, "localname": "GoodwillDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/Goodwill" ], "xbrltype": "textBlockItemType" }, "us-gaap_GoodwillForeignCurrencyTranslationGainLoss": { "auth_ref": [ "r311" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.", "label": "Goodwill, Foreign Currency Translation Gain (Loss)", "terseLabel": "Foreign currency translation and other" } } }, "localname": "GoodwillForeignCurrencyTranslationGainLoss", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillImpairedAccumulatedImpairmentLoss": { "auth_ref": [ "r308" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.", "label": "Goodwill, Impaired, Accumulated Impairment Loss", "terseLabel": "Accumulated impairment losses" } } }, "localname": "GoodwillImpairedAccumulatedImpairmentLoss", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillImpairmentLoss": { "auth_ref": [ "r168", "r305", "r310", "r314" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.", "label": "Goodwill, Impairment Loss", "terseLabel": "Remaining goodwill" } } }, "localname": "GoodwillImpairmentLoss", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillOtherIncreaseDecrease": { "auth_ref": [ "r312" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.", "label": "Goodwill, Other Increase (Decrease)", "terseLabel": "Reallocation among new reporting units" } } }, "localname": "GoodwillOtherIncreaseDecrease", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Goodwill [Roll Forward]", "terseLabel": "Goodwill [Roll Forward]" } } }, "localname": "GoodwillRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails" ], "xbrltype": "stringItemType" }, "us-gaap_GrossInvestmentIncomeOperating": { "auth_ref": [ "r716" ], "calculation": { "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails": { "order": 1.0, "parentTag": "us-gaap_NetInvestmentIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.", "label": "Gross Investment Income, Operating", "terseLabel": "Total Investment Income" } } }, "localname": "GrossInvestmentIncomeOperating", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GuarantyLiabilities": { "auth_ref": [ "r348", "r349", "r631", "r705" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This item represents a non-contingent liability for the fair value of an obligation to stand ready to perform over the term of a guaranty issued in the event that specified triggering events or conditions occur.", "label": "Guaranty Liabilities", "terseLabel": "Estimated share of guaranty association assessments" } } }, "localname": "GuarantyLiabilities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HedgeFundsMultistrategyMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investments in registered hedge funds structured to implement multiple investment strategies with the purpose of portfolio diversification.", "label": "Hedge Funds, Multi-strategy [Member]", "terseLabel": "Multi-strategy hedge fund" } } }, "localname": "HedgeFundsMultistrategyMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_HedgingDesignationAxis": { "auth_ref": [ "r547" ], "lang": { "en-US": { "role": { "documentation": "Information by hedging designation related to derivative instruments.", "label": "Hedging Designation [Axis]", "terseLabel": "Hedging Designation [Axis]" } } }, "localname": "HedgingDesignationAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_HedgingDesignationDomain": { "auth_ref": [ "r547" ], "lang": { "en-US": { "role": { "documentation": "The name that identifies a derivative or a group of derivatives, by hedging designation.", "label": "Hedging Designation [Domain]", "terseLabel": "Hedging Designation [Domain]" } } }, "localname": "HedgingDesignationDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_HurricaneMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tropical windstorm with sustained winds of 74 miles per hour (119 kilometers per hour).", "label": "Hurricane [Member]", "terseLabel": "Hurricanes Harvey, Irma and Maria", "verboseLabel": "Hurricane Matthew" } } }, "localname": "HurricaneMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails", "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill": { "auth_ref": [ "r168", "r327" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 17.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.", "label": "Impairment of Intangible Assets (Excluding Goodwill)", "netLabel": "Other intangible asset impairment" } } }, "localname": "ImpairmentOfIntangibleAssetsExcludingGoodwill", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ImpairmentOfIntangibleAssetsFinitelived": { "auth_ref": [ "r327" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.", "label": "Impairment of Intangible Assets, Finite-lived", "terseLabel": "Impairment charge of finite-lived intangible assets" } } }, "localname": "ImpairmentOfIntangibleAssetsFinitelived", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill": { "auth_ref": [ "r327" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.", "label": "Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)", "terseLabel": "Intangible asset impairment charge" } } }, "localname": "ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ImpairmentOfInvestments": { "auth_ref": [ "r168", "r260" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 1.0, "parentTag": "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.", "label": "Other than Temporary Impairment Losses, Investments", "negatedLabel": "Total other-than-temporary impairment losses", "terseLabel": "Total other-than-temporary impairment" } } }, "localname": "ImpairmentOfInvestments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic": { "auth_ref": [ "r184" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesInformationAboutDomesticAndForeignPreTaxIncomeDetails": { "order": 1.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.", "label": "Income (Loss) from Continuing Operations before Income Taxes, Domestic", "terseLabel": "Domestic" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesInformationAboutDomesticAndForeignPreTaxIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": { "auth_ref": [ "r135", "r614", "r639", "r714" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.", "label": "Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest", "totalLabel": "Income before (benefit) provision for income taxes", "verboseLabel": "Income (loss) before provision (benefit) for income taxes" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsOfOperationsDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign": { "auth_ref": [ "r184" ], "calculation": { "http://www.assurant.com/role/IncomeTaxesInformationAboutDomesticAndForeignPreTaxIncomeDetails": { "order": 2.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.", "label": "Income (Loss) from Continuing Operations before Income Taxes, Foreign", "terseLabel": "Foreign" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesInformationAboutDomesticAndForeignPreTaxIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments": { "auth_ref": [ "r184" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": 2.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 }, "http://www.assurant.com/role/IncomeTaxesInformationAboutDomesticAndForeignPreTaxIncomeDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.", "label": "Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest", "totalLabel": "Total pre-tax income" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/IncomeTaxesInformationAboutDomesticAndForeignPreTaxIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest": { "auth_ref": [ "r526" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.", "label": "Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest", "terseLabel": "Total reclassifications for the period" } } }, "localname": "IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeLossFromIndividuallySignificantComponentDisposedOfOrHeldForSaleExcludingDiscontinuedOperationsBeforeIncomeTax": { "auth_ref": [ "r337" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of income (loss) from an individually significant component disposed of or held-for-sale including the portion attributable to the noncontrolling interest. Excludes discontinued operations.", "label": "Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, before Income Tax", "terseLabel": "Pretax income from disposal" } } }, "localname": "IncomeLossFromIndividuallySignificantComponentDisposedOfOrHeldForSaleExcludingDiscontinuedOperationsBeforeIncomeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeLossFromSubsidiariesBeforeTax": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of income (loss) of subsidiary attributable to the parent entity.", "label": "Income (Loss) from Subsidiaries, before Tax", "verboseLabel": "Equity in net income of subsidiaries" } } }, "localname": "IncomeLossFromSubsidiariesBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeStatementAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Income Statement [Abstract]" } } }, "localname": "IncomeStatementAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis": { "auth_ref": [ "r19" ], "lang": { "en-US": { "role": { "documentation": "Information by name of disposal group.", "label": "Disposal Group Name [Axis]", "terseLabel": "Disposal Group Name [Axis]" } } }, "localname": "IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]", "terseLabel": "Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]" } } }, "localname": "IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable": { "auth_ref": [ "r48", "r50", "r51", "r52", "r53", "r54", "r55", "r56", "r57", "r58", "r59", "r336", "r338" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.", "label": "Disposal Groups, Including Discontinued Operations [Table]", "terseLabel": "Disposal Groups, Including Discontinued Operations [Table]" } } }, "localname": "IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesGainByTransactionComponentDetails", "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementLocationAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by location in the income statement.", "label": "Income Statement Location [Axis]", "terseLabel": "Income Statement Location [Axis]" } } }, "localname": "IncomeStatementLocationAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementLocationDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Location in the income statement.", "label": "Income Statement Location [Domain]", "terseLabel": "Income Statement Location [Domain]" } } }, "localname": "IncomeStatementLocationDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IncomeTaxDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Income Tax Disclosure [Abstract]" } } }, "localname": "IncomeTaxDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxDisclosureTextBlock": { "auth_ref": [ "r186", "r471", "r484", "r486", "r492" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.", "label": "Income Tax Disclosure [Text Block]", "terseLabel": "Income Taxes" } } }, "localname": "IncomeTaxDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxes" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeTaxExpenseBenefit": { "auth_ref": [ "r24", "r186", "r490" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": 1.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": -1.0 }, "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.", "label": "Income Tax Expense (Benefit)", "negatedLabel": "Provision for income taxes", "negatedTerseLabel": "Benefit for income taxes", "terseLabel": "Provision (benefit) for income taxes", "totalLabel": "Total income tax (benefit) expense", "verboseLabel": "(Benefit) provision for income taxes" } } }, "localname": "IncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeTaxPolicyTextBlock": { "auth_ref": [ "r176", "r464", "r465", "r478", "r479", "r495", "r802" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.", "label": "Income Tax, Policy [Policy Text Block]", "verboseLabel": "Income Taxes" } } }, "localname": "IncomeTaxPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeTaxReceivable": { "auth_ref": [ "r84", "r671" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 8.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 4.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.", "label": "Income Taxes Receivable", "terseLabel": "Tax receivable", "verboseLabel": "Income tax receivable" } } }, "localname": "IncomeTaxReceivable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeTaxesPaid": { "auth_ref": [ "r163", "r175" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.", "label": "Income Taxes Paid", "terseLabel": "Income taxes paid" } } }, "localname": "IncomeTaxesPaid", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities": { "auth_ref": [ "r167" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 20.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.", "label": "Increase (Decrease) in Accounts Payable and Accrued Liabilities", "terseLabel": "Change in accounts payable and other liabilities" } } }, "localname": "IncreaseDecreaseInAccountsPayableAndAccruedLiabilities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements": { "auth_ref": [ "r167" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The change in funds held under reinsurance agreements or treaty (contract between the reinsurer and the ceding entity stipulating the manner in which insurance written on various risks is to be shared).", "label": "Increase (Decrease) in Funds Held under Reinsurance Agreements", "negatedLabel": "Change in funds withheld under reinsurance" } } }, "localname": "IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInIncomeTaxes": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes, and in deferred and other tax liabilities and assets.", "label": "Increase (Decrease) in Income Taxes", "terseLabel": "Change in income taxes" } } }, "localname": "IncreaseDecreaseInIncomeTaxes", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInInventories": { "auth_ref": [ "r167" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 9.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.", "label": "Increase (Decrease) in Inventories", "negatedTerseLabel": "Change in inventory associated with mobile business" } } }, "localname": "IncreaseDecreaseInInventories", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Increase (Decrease) in Operating Capital [Abstract]", "terseLabel": "Changes in operating assets and liabilities:" } } }, "localname": "IncreaseDecreaseInOperatingCapitalAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_IncreaseDecreaseInOtherOperatingAssets": { "auth_ref": [ "r167" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 19.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in operating assets classified as other.", "label": "Increase (Decrease) in Other Operating Assets", "negatedLabel": "Other" } } }, "localname": "IncreaseDecreaseInOtherOperatingAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInReinsurancePayables": { "auth_ref": [ "r167" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the amount due to other insurance companies when the reporting entity has assumed a portion of the cedant's insurance risk which has resulted in insurance losses.", "label": "Increase (Decrease) in Reinsurance Payables", "terseLabel": "Change in reinsurance balance payable" } } }, "localname": "IncreaseDecreaseInReinsurancePayables", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInReinsuranceRecoverable": { "auth_ref": [ "r167" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the amount of benefits the ceding insurer expects to recover on insurance policies ceded to other insurance entities as of the balance sheet date for all guaranteed benefit types.", "label": "Increase (Decrease) in Reinsurance Recoverable", "negatedLabel": "Change in reinsurance recoverable" } } }, "localname": "IncreaseDecreaseInReinsuranceRecoverable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInStockholdersEquityRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Increase (Decrease) in Stockholders' Equity [Roll Forward]", "terseLabel": "Increase (Decrease) in Stockholders' Equity [Roll Forward]" } } }, "localname": "IncreaseDecreaseInStockholdersEquityRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "stringItemType" }, "us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements": { "auth_ref": [ "r197", "r206" ], "calculation": { "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": 2.0, "parentTag": "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.", "label": "Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements", "terseLabel": "Incremental common shares" } } }, "localname": "IncrementalCommonSharesAttributableToShareBasedPaymentArrangements", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill": { "auth_ref": [ "r325" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.", "label": "Indefinite-Lived Intangible Assets (Excluding Goodwill)", "terseLabel": "Indefinite-Lived Intangible Assets (Excluding Goodwill)" } } }, "localname": "IndefiniteLivedIntangibleAssetsExcludingGoodwill", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InsuranceAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Insurance [Abstract]" } } }, "localname": "InsuranceAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_InsuranceDisclosureTextBlock": { "auth_ref": [ "r660", "r661" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the types of coverages and products sold, and the assets, obligations, recorded liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.", "label": "Insurance Disclosure [Text Block]", "terseLabel": "Reserves" } } }, "localname": "InsuranceDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/Reserves" ], "xbrltype": "textBlockItemType" }, "us-gaap_InsuranceLossReservesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Insurance Loss Reserves [Abstract]" } } }, "localname": "InsuranceLossReservesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_IntangibleAssetsDisclosureTextBlock": { "auth_ref": [ "r320", "r326", "r328" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for all or part of the information related to intangible assets.", "label": "Intangible Assets Disclosure [Text Block]", "verboseLabel": "VOBA And Other Intangible Assets" } } }, "localname": "IntangibleAssetsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssets" ], "xbrltype": "textBlockItemType" }, "us-gaap_IntangibleAssetsGrossExcludingGoodwill": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails": { "order": 2.0, "parentTag": "us-gaap_IntangibleAssetsNetExcludingGoodwill", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before accumulated amortization of intangible assets, excluding goodwill.", "label": "Intangible Assets, Gross (Excluding Goodwill)", "terseLabel": "Carrying Value" } } }, "localname": "IntangibleAssetsGrossExcludingGoodwill", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IntangibleAssetsNetExcludingGoodwill": { "auth_ref": [ "r316", "r321" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 11.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.", "label": "Intangible Assets, Net (Excluding Goodwill)", "totalLabel": "Net Other Intangible Assets", "verboseLabel": "Other intangible assets, net" } } }, "localname": "IntangibleAssetsNetExcludingGoodwill", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestAccrualRateAssociatedWithAmortizationMethodOfPresentValueOfFutureInsuranceProfits": { "auth_ref": [ "r667" ], "lang": { "en-US": { "role": { "documentation": "States the assumed long-term market interest rate used in the determination of the present value of future profits on long-duration contracts acquired in a business combination.", "label": "Interest Accrual Rate Associated with Amortization Method of Present Value of Future Insurance Profits", "terseLabel": "VOBA interest rate" } } }, "localname": "InterestAccrualRateAssociatedWithAmortizationMethodOfPresentValueOfFutureInsuranceProfits", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_InterestExpense": { "auth_ref": [ "r594", "r597", "r643" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 4.0, "parentTag": "us-gaap_BenefitsLossesAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of the cost of borrowed funds accounted for as interest expense.", "label": "Interest Expense", "terseLabel": "Interest expense", "verboseLabel": "Senior notes interest expense" } } }, "localname": "InterestExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/DebtSeniorNotesDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestPaidNet": { "auth_ref": [ "r175" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.", "label": "Interest Paid, Net", "terseLabel": "Interest paid on debt" } } }, "localname": "InterestPaidNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestPayableCurrentAndNoncurrent": { "auth_ref": [ "r630", "r704" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of interest payable on debt, including, but not limited to, trade payables.", "label": "Interest Payable", "terseLabel": "Accrued interest" } } }, "localname": "InterestPayableCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtSeniorNotesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestRateContractMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Derivative instrument whose primary underlying risk is tied to the right to receive or pay a sum of money at a given interest rate.", "label": "Interest Rate Contract [Member]", "terseLabel": "Interest rate swap" } } }, "localname": "InterestRateContractMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InterestsContinuedToBeHeldByTransferorFairValue": { "auth_ref": [ "r610" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The carrying amount (fair value) as of the balance sheet date of the transferor's interests in transferred financial assets (typically securitized receivables, generally not involved in the collection of principal) following transfer of significant portions of such financial instruments to other parties. Such interests could be ancillary cash flows and interest-only strips.", "label": "Transferor's Interests in Transferred Financial Assets, Fair Value", "terseLabel": "Fair value of securities purchased" } } }, "localname": "InterestsContinuedToBeHeldByTransferorFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InternalCreditAssessmentAxis": { "auth_ref": [ "r245", "r351", "r554", "r788" ], "lang": { "en-US": { "role": { "documentation": "Information by entity-defined rating.", "label": "Internal Credit Assessment [Axis]", "terseLabel": "Internal Credit Assessment [Axis]" } } }, "localname": "InternalCreditAssessmentAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InternalCreditAssessmentDomain": { "auth_ref": [ "r245", "r350", "r553" ], "lang": { "en-US": { "role": { "documentation": "Entity defined credit risk rating.", "label": "Internal Credit Assessment [Domain]", "terseLabel": "Internal Credit Assessment [Domain]", "verboseLabel": "Internal Credit Assessment [Domain]" } } }, "localname": "InternalCreditAssessmentDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InternalInvestmentGradeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Credit rating classification developed by the entity in which the probability of default is low and full and timely repayments are expected.", "label": "Internal Investment Grade [Member]", "terseLabel": "Internal Investment Grade" } } }, "localname": "InternalInvestmentGradeMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InvestmentIncomeInvestmentExpense": { "auth_ref": [ "r147", "r716" ], "calculation": { "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails": { "order": 2.0, "parentTag": "us-gaap_NetInvestmentIncome", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expenses related to the generation of investment income.", "label": "Investment Income, Investment Expense", "negatedLabel": "Investment expenses" } } }, "localname": "InvestmentIncomeInvestmentExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InvestmentIncomeTextBlock": { "auth_ref": [ "r143", "r146", "r147", "r716" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of investment income, including, but not limited to, interest and dividend income and amortization of discount (premium) derived from debt and equity securities. Excludes realized and unrealized gain (loss) on investments.", "label": "Investment Income [Table Text Block]", "verboseLabel": "Categories Of Net Investment Income" } } }, "localname": "InvestmentIncomeTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_InvestmentPolicyTextBlock": { "auth_ref": [ "r97", "r176", "r281", "r300", "r301", "r302", "r576" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for investments in financial assets, including marketable securities (debt and equity securities with readily determinable fair values), investments accounted for under the equity method and cost method, securities borrowed and loaned, and repurchase and resale agreements. For marketable securities, the disclosure may include the entity's accounting treatment for transfers between investment categories and how the fair values for such securities are determined. Also, for all investments, an entity may describe its policy for assessing, recognizing and measuring impairment of the investment.", "label": "Investment, Policy [Policy Text Block]", "verboseLabel": "Investments" } } }, "localname": "InvestmentPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_InvestmentSecondaryCategorizationAxis": { "auth_ref": [ "r793", "r794", "r795", "r797" ], "lang": { "en-US": { "role": { "documentation": "Information by second categorization of investments, which may include, but is not limited to industry.", "label": "Investment Secondary Categorization [Axis]", "terseLabel": "Investment Secondary Categorization [Axis]" } } }, "localname": "InvestmentSecondaryCategorizationAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentTypeAxis": { "auth_ref": [ "r572", "r789", "r792", "r798" ], "lang": { "en-US": { "role": { "documentation": "Information by type of investments.", "label": "Investment Type [Axis]", "terseLabel": "Investment Type [Axis]" } } }, "localname": "InvestmentTypeAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentTypeCategorizationMember": { "auth_ref": [ "r572", "r789", "r792", "r798" ], "lang": { "en-US": { "role": { "documentation": "Asset obtained to generate income or appreciate in value.", "label": "Investments [Domain]", "terseLabel": "Investments [Domain]" } } }, "localname": "InvestmentTypeCategorizationMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Investments": { "auth_ref": [ "r699" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 1.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all investments.", "label": "Investments", "totalLabel": "Total investments" } } }, "localname": "Investments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InvestmentsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Investments [Abstract]", "terseLabel": "Investments:" } } }, "localname": "InvestmentsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentsBySecondaryCategorizationDomain": { "auth_ref": [ "r791", "r795" ], "lang": { "en-US": { "role": { "documentation": "Investments in the \"Investment Holdings [Table]\" and the \"Summary of Investment Holdings [Table]\" are often categorized at two levels. The first categorization is the investment type. The second categorization can vary. The usual secondary categorizations are industry, country or geography.", "label": "Investments by Secondary Categorization [Domain]", "terseLabel": "Investments by Secondary Categorization [Domain]" } } }, "localname": "InvestmentsBySecondaryCategorizationDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.", "label": "Investments Classified by Contractual Maturity Date [Table Text Block]", "terseLabel": "Amortized Cost And Fair Value Of Fixed Maturity Securities By Contractual Maturity" } } }, "localname": "InvestmentsClassifiedByContractualMaturityDateTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Investments, Debt and Equity Securities [Abstract]" } } }, "localname": "InvestmentsDebtAndEquitySecuritiesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_InvestmentsFairValueDisclosure": { "auth_ref": [ "r6", "r43", "r64", "r69", "r258", "r259", "r626", "r627", "r677" ], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 2.0, "parentTag": "us-gaap_AssetsFairValueDisclosureNonrecurring", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.", "label": "Investments, Fair Value Disclosure", "terseLabel": "Other investments", "verboseLabel": "Investments:" } } }, "localname": "InvestmentsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InvestmentsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assets held for their financial return, rather than for the entity's operations.", "label": "Investments [Member]", "terseLabel": "Investments" } } }, "localname": "InvestmentsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Land": { "auth_ref": [ "r61", "r88" ], "calculation": { "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails": { "order": 3.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.", "label": "Land", "terseLabel": "Land" } } }, "localname": "Land", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LeasePolicyTextBlock": { "auth_ref": [ "r176", "r600", "r605", "r606", "r747" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for leasing arrangements (both lessor and lessee). This disclosure may address (1) lease classification (that is, operating versus capital), (2) how the term of a lease is determined (for example, the circumstances in which a renewal option is considered part of the lease term), (3) how rental revenue or expense is recognized for a lease that contains rent escalations, (4) an entity's accounting treatment for deferred rent, including that which arises from lease incentives, rent abatements, rent holidays, or tenant allowances (5) an entity's accounting treatment for contingent rental payments and (6) an entity's policy for reviewing, at least annually, the residual values of sales-type and direct-finance leases. The disclosure also may indicate how the entity accounts for its capital leases, leveraged leases or sale-leaseback transactions.", "label": "Lease, Policy [Policy Text Block]", "verboseLabel": "Leases" } } }, "localname": "LeasePolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_LetterOfCreditMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A document typically issued by a financial institution which acts as a guarantee of payment to a beneficiary, or as the source of payment for a specific transaction (for example, wiring funds to a foreign exporter if and when specified merchandise is accepted pursuant to the terms of the letter of credit).", "label": "Letter of Credit [Member]", "terseLabel": "Letter of Credit" } } }, "localname": "LetterOfCreditMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LettersOfCreditOutstandingAmount": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.", "label": "Letters of Credit Outstanding, Amount", "terseLabel": "Letters of credit outstanding" } } }, "localname": "LettersOfCreditOutstandingAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_Liabilities": { "auth_ref": [ "r95" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.", "label": "Liabilities", "terseLabel": "Liabilities", "totalLabel": "Total liabilities" } } }, "localname": "Liabilities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Liabilities [Abstract]", "terseLabel": "Liabilities" } } }, "localname": "LiabilitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesAndStockholdersEquity": { "auth_ref": [ "r83", "r624", "r689" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.", "label": "Liabilities and Equity", "totalLabel": "Total liabilities and equity" } } }, "localname": "LiabilitiesAndStockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesFairValueDisclosure": { "auth_ref": [ "r558" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value of financial and nonfinancial obligations.", "label": "Financial and Nonfinancial Liabilities, Fair Value Disclosure", "terseLabel": "Total financial liabilities", "verboseLabel": "Financial Liabilities" } } }, "localname": "LiabilitiesFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesFairValueDisclosureNonrecurring": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Aggregation of the liabilities reported on the balance sheet measured at fair value on a nonrecurring basis by the entity.", "label": "Liabilities, Fair Value Disclosure, Nonrecurring", "totalLabel": "Total financial liabilities" } } }, "localname": "LiabilitiesFairValueDisclosureNonrecurring", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Liabilities for Guarantees on Long-Duration Contracts [Line Items]", "terseLabel": "Reinsurance [Line Items]" } } }, "localname": "LiabilitiesForGuaranteesOnLongDurationContractsLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsTable": { "auth_ref": [ "r666", "r784" ], "lang": { "en-US": { "role": { "documentation": "A table reflecting the guaranteed minimum benefits by product type due contract holders under annuity and life products having traditional and nontraditional terms.", "label": "Liabilities for Guarantees on Long-Duration Contracts [Table]", "terseLabel": "Liabilities for Guarantees on Long-Duration Contracts [Table]" } } }, "localname": "LiabilitiesForGuaranteesOnLongDurationContractsTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis": { "auth_ref": [ "r752" ], "lang": { "en-US": { "role": { "documentation": "Information by type of catastrophic event, for example, but not limited to, earthquake, windstorm, fire or explosion.", "label": "Catastrophic Event [Axis]", "terseLabel": "Catastrophic Event [Axis]" } } }, "localname": "LiabilityForCatastropheClaimsByCatastrophicEventAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails", "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense": { "auth_ref": [ "r748", "r751" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 }, "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": 1.0, "parentTag": "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.", "label": "Liability for Claims and Claims Adjustment Expense", "periodEndLabel": "Claims and benefits payable, at end of year", "periodStartLabel": "Claims and benefits payable, at beginning of year", "terseLabel": "Claims and benefits payable" } } }, "localname": "LiabilityForClaimsAndClaimsAdjustmentExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpenseLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Liability for Claims and Claims Adjustment Expense [Line Items]", "terseLabel": "Liability for Claims and Claims Adjustment Expense [Line Items]" } } }, "localname": "LiabilityForClaimsAndClaimsAdjustmentExpenseLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesTables" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpenseTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about the liability for claims and claims adjustment expense.", "label": "Liability for Claims and Claims Adjustment Expense [Table]", "terseLabel": "Liability for Claims and Claims Adjustment Expense [Table]" } } }, "localname": "LiabilityForClaimsAndClaimsAdjustmentExpenseTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesTables" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilityForFuturePolicyBenefits": { "auth_ref": [ "r701", "r746", "r748", "r751" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of accrued obligation to policyholders that relates to insured events for long-duration contracts.", "label": "Liability for Future Policy Benefits", "terseLabel": "Future policy benefits and expenses" } } }, "localname": "LiabilityForFuturePolicyBenefits", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract]", "terseLabel": "Paid losses and loss adjustment expenses related to:" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1": { "auth_ref": [ "r750" ], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": 1.0, "parentTag": "us-gaap_PaymentsForLossesAndLossAdjustmentExpense", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after effects of reinsurance, of payments to settle claims incurred in the current period and related claims settlement costs.", "label": "Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year", "terseLabel": "Paid losses and loss adjustment expenses, current year" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1": { "auth_ref": [ "r750" ], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": 2.0, "parentTag": "us-gaap_PaymentsForLossesAndLossAdjustmentExpense", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after effects of reinsurance, of payments to settle claims incurred in prior periods and related claims settlement costs.", "label": "Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years", "terseLabel": "Paid losses and loss adjustment expenses, prior year(s)" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1": { "auth_ref": [ "r749" ], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred and costs incurred in the claim settlement process.", "label": "Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims", "totalLabel": "Total incurred losses and loss adjustment expenses" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract]", "terseLabel": "Incurred losses and loss adjustment expenses related to:" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet": { "auth_ref": [ "r672", "r748", "r751" ], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims.", "label": "Liability for Unpaid Claims and Claims Adjustment Expense, Net", "periodEndLabel": "Net claims and benefits payable, at end of year", "periodStartLabel": "Net claims and benefits payable, at beginning of year" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]", "terseLabel": "Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LifeAndAnnuityInsuranceProductLineMember": { "auth_ref": [ "r761" ], "lang": { "en-US": { "role": { "documentation": "Product line consisting of insurance policies providing death benefits and annuity contracts.", "label": "Life and Annuity Insurance Product Line [Member]", "terseLabel": "Life and Annuity Insurance Product Line" } } }, "localname": "LifeAndAnnuityInsuranceProductLineMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LifeInsuranceInForceAssumed": { "auth_ref": [ "r728" ], "calculation": { "http://www.assurant.com/role/ScheduleIvReinsuranceDetails": { "order": 3.0, "parentTag": "us-gaap_LifeInsuranceInForceNet", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of life insurance issued and outstanding assumed from other entities. Includes, but not limited to, dividends and adjustments to face value.", "label": "Life Insurance in Force, Assumed", "terseLabel": "Life insurance in force, assumed other companies" } } }, "localname": "LifeInsuranceInForceAssumed", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LifeInsuranceInForceCeded": { "auth_ref": [ "r728" ], "calculation": { "http://www.assurant.com/role/ScheduleIvReinsuranceDetails": { "order": 2.0, "parentTag": "us-gaap_LifeInsuranceInForceNet", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of life insurance issued and outstanding ceded to other entities. Includes, but not limited to, dividends and adjustments to face value.", "label": "Life Insurance in Force, Ceded", "terseLabel": "Life insurance in force, ceded to other companies" } } }, "localname": "LifeInsuranceInForceCeded", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LifeInsuranceInForceGross": { "auth_ref": [ "r728" ], "calculation": { "http://www.assurant.com/role/ScheduleIvReinsuranceDetails": { "order": 1.0, "parentTag": "us-gaap_LifeInsuranceInForceNet", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before contracts ceded to other entities and contracts assumed by the entity of life insurance issued and outstanding. Includes, but not limited to, dividends and adjustments to face value.", "label": "Life Insurance in Force, Gross", "terseLabel": "Life insurance in force, gross" } } }, "localname": "LifeInsuranceInForceGross", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LifeInsuranceInForceNet": { "auth_ref": [ "r728" ], "calculation": { "http://www.assurant.com/role/ScheduleIvReinsuranceDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after contracts ceded to other entities and contracts assumed by the entity of life insurance issued and outstanding. Includes, but not limited to, dividends and adjustments to face value.", "label": "Life Insurance in Force, Net", "totalLabel": "Life insurance in force, net" } } }, "localname": "LifeInsuranceInForceNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LifeInsuranceInForcePercentageAssumedToNet": { "auth_ref": [ "r728" ], "lang": { "en-US": { "role": { "documentation": "Percentage of assumed life insurance issued and outstanding contracts to life insurance issued and outstanding after contracts ceded to other entities and contracts assumed by the entity. Includes, but not limited to, dividends and adjustments to face value.", "label": "Life Insurance in Force, Percentage Assumed to Net", "terseLabel": "Life insurance in force, percentage of amount assumed to net" } } }, "localname": "LifeInsuranceInForcePercentageAssumedToNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "percentItemType" }, "us-gaap_LifeInsuranceSegmentMember": { "auth_ref": [ "r729", "r747", "r761" ], "lang": { "en-US": { "role": { "documentation": "Product line consisting of insurance policies providing death benefits.", "label": "Life Insurance Product Line [Member]", "terseLabel": "Life insurance" } } }, "localname": "LifeInsuranceSegmentMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LineOfCredit": { "auth_ref": [ "r71", "r622", "r674" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.", "label": "Long-term Line of Credit", "terseLabel": "Amount outstanding" } } }, "localname": "LineOfCredit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCreditFacilityAxis": { "auth_ref": [ "r92", "r182" ], "lang": { "en-US": { "role": { "documentation": "Information by name of lender, which may be a single entity (for example, but not limited to, a bank, pension fund, venture capital firm) or a group of entities that participate in the line of credit.", "label": "Lender Name [Axis]", "terseLabel": "Lender Name [Axis]" } } }, "localname": "LineOfCreditFacilityAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity": { "auth_ref": [ "r92" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.", "label": "Line of Credit Facility, Current Borrowing Capacity", "terseLabel": "Credit facility borrowing capacity", "verboseLabel": "Senior revolving credit facility borrowing capacity" } } }, "localname": "LineOfCreditFacilityCurrentBorrowingCapacity", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCreditFacilityLenderDomain": { "auth_ref": [ "r92" ], "lang": { "en-US": { "role": { "documentation": "Identification of the lender, which may be a single entity (for example, a bank, pension fund, venture capital firm) or a group of entities that participate in the line of credit, including a letter of credit facility.", "label": "Line of Credit Facility, Lender [Domain]", "terseLabel": "Line of Credit Facility, Lender [Domain]" } } }, "localname": "LineOfCreditFacilityLenderDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LineOfCreditFacilityLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Line of Credit Facility [Line Items]", "terseLabel": "Line of Credit Facility [Line Items]" } } }, "localname": "LineOfCreditFacilityLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity": { "auth_ref": [ "r92" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.", "label": "Line of Credit Facility, Maximum Borrowing Capacity", "terseLabel": "Maximum borrowing capacity" } } }, "localname": "LineOfCreditFacilityMaximumBorrowingCapacity", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity": { "auth_ref": [ "r92" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).", "label": "Line of Credit Facility, Remaining Borrowing Capacity", "terseLabel": "Senior revolving credit facility available capacity" } } }, "localname": "LineOfCreditFacilityRemainingBorrowingCapacity", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCreditFacilityTable": { "auth_ref": [ "r92", "r182" ], "lang": { "en-US": { "role": { "documentation": "A table or schedule providing information pertaining to short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.", "label": "Line of Credit Facility [Table]", "terseLabel": "Line of Credit Facility [Table]" } } }, "localname": "LineOfCreditFacilityTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars.", "label": "Line of Credit [Member]", "terseLabel": "Line of credit" } } }, "localname": "LineOfCreditMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LoansAndLeasesReceivableAllowance": { "auth_ref": [ "r243", "r244", "r252", "r253", "r637" ], "calculation": { "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails": { "order": 2.0, "parentTag": "us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.", "label": "Loans and Leases Receivable, Allowance", "negatedLabel": "Less valuation allowance" } } }, "localname": "LoansAndLeasesReceivableAllowance", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansReceivableCommercialMortgage": { "auth_ref": [ "r246", "r636" ], "calculation": { "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails": { "order": 1.0, "parentTag": "us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allowance of mortgage loans on existing land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.", "label": "Loans Receivable, Gross, Commercial, Mortgage", "terseLabel": "Gross commercial mortgage loans", "verboseLabel": "Outstanding balance of commercial mortgage loans" } } }, "localname": "LoansReceivableCommercialMortgage", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongtermDebtTypeAxis": { "auth_ref": [ "r99" ], "lang": { "en-US": { "role": { "documentation": "Information by type of long-term debt.", "label": "Long-term Debt, Type [Axis]", "terseLabel": "Long-term Debt, Type [Axis]" } } }, "localname": "LongtermDebtTypeAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "http://www.assurant.com/role/DebtSeniorNotesDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LongtermDebtTypeDomain": { "auth_ref": [ "r99", "r356" ], "lang": { "en-US": { "role": { "documentation": "Type of long-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.", "label": "Long-term Debt, Type [Domain]", "terseLabel": "Long-term Debt, Type [Domain]" } } }, "localname": "LongtermDebtTypeDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "http://www.assurant.com/role/DebtSeniorNotesDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LossFromCatastrophes": { "auth_ref": [ "r147" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The charge against earnings in the period for the uninsured portion of a loss from a fire, explosion, or natural disaster (hurricane, earthquake).", "label": "Loss from Catastrophes", "terseLabel": "Loss from Catastrophes" } } }, "localname": "LossFromCatastrophes", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by major type of debt and equity security.", "label": "Major Types of Debt and Equity Securities [Axis]", "terseLabel": "Major Types of Debt and Equity Securities [Axis]" } } }, "localname": "MajorTypesOfDebtAndEquitySecuritiesAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain": { "auth_ref": [ "r254", "r255", "r256", "r647" ], "lang": { "en-US": { "role": { "documentation": "Debt instrument issued by corporations, governments and governmental agencies, municipalities, and other institutions. Equity securities are ownership interests or the right to acquire or dispose of ownership interests in corporations and other legal entities for which ownership interest is represented by shares of common or preferred stock.", "label": "Major Types of Debt and Equity Securities [Domain]", "terseLabel": "Major Types of Debt and Equity Securities [Domain]" } } }, "localname": "MajorTypesOfDebtAndEquitySecuritiesDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MarketApproachValuationTechniqueMember": { "auth_ref": [ "r561" ], "lang": { "en-US": { "role": { "documentation": "Market approach valuation technique used to measure fair value.", "label": "Market Approach Valuation Technique [Member]", "terseLabel": "Market Approach Valuation Technique" } } }, "localname": "MarketApproachValuationTechniqueMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments": { "auth_ref": [ "r138", "r139", "r298", "r638", "r712" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 12.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period.", "label": "Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments", "negatedLabel": "Net realized gains on investments" } } }, "localname": "MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_MarketingRelatedIntangibleAssetsMember": { "auth_ref": [ "r511" ], "lang": { "en-US": { "role": { "documentation": "Marketing-related asset, including, but not limited to, internet domain name, newspaper mast head, and trademark.", "label": "Marketing-Related Intangible Assets [Member]", "terseLabel": "Marketing related intangibles" } } }, "localname": "MarketingRelatedIntangibleAssetsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MaximumMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Upper limit of the provided range.", "label": "Maximum [Member]", "terseLabel": "Maximum" } } }, "localname": "MaximumMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MinimumMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Lower limit of the provided range.", "label": "Minimum [Member]", "terseLabel": "Minimum" } } }, "localname": "MinimumMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MinorityInterest": { "auth_ref": [ "r104", "r623", "r688" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).", "label": "Stockholders' Equity Attributable to Noncontrolling Interest", "terseLabel": "Non-controlling interest" } } }, "localname": "MinorityInterest", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet": { "auth_ref": [ "r696" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Investments", "weight": 1.0 }, "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.", "label": "Mortgage Loans on Real Estate, Commercial and Consumer, Net", "totalLabel": "Net commercial mortgage loans", "verboseLabel": "Commercial mortgage loans on real estate, at amortized cost" } } }, "localname": "MortgageLoansOnRealEstateCommercialAndConsumerNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_MortgagesHeldForSaleFairValueDisclosure": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 1.0, "parentTag": "us-gaap_AssetsFairValueDisclosureNonrecurring", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value portion of mortgage loans held-for-sale.", "label": "Mortgages Held-for-sale, Fair Value Disclosure", "verboseLabel": "Commercial mortgage loans on real estate" } } }, "localname": "MortgagesHeldForSaleFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_MortgagesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A loan to finance the purchase of real estate where the lender has a lien on the property as collateral for the loan.", "label": "Mortgages [Member]", "terseLabel": "Commercial mortgage loans on real estate" } } }, "localname": "MortgagesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MovementAnalysisOfDeferredPolicyAcquisitionCostsRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]", "terseLabel": "Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]" } } }, "localname": "MovementAnalysisOfDeferredPolicyAcquisitionCostsRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DeferredAcquisitionCostsScheduleOfDeferredAcquisitionCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_MovementInPresentValueOfFutureInsuranceProfitsRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Movement in Present Value of Future Insurance Profits [Roll Forward]", "terseLabel": "Movement in Present Value of Future Insurance Profits [Roll Forward]" } } }, "localname": "MovementInPresentValueOfFutureInsuranceProfitsRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutVobaDetails" ], "xbrltype": "stringItemType" }, "us-gaap_MovementInValuationAllowancesAndReservesRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Movement in Valuation Allowances and Reserves [Roll Forward]", "terseLabel": "Movement in Valuation Allowances and Reserves [Roll Forward]" } } }, "localname": "MovementInValuationAllowancesAndReservesRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NatureOfOperations": { "auth_ref": [ "r215", "r217" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.", "label": "Nature of Operations [Text Block]", "terseLabel": "Nature Of Operations" } } }, "localname": "NatureOfOperations", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/NatureOfOperations" ], "xbrltype": "textBlockItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivities": { "auth_ref": [ "r161", "r166" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.", "label": "Net Cash Provided by (Used in) Financing Activities", "terseLabel": "Reclassification into financing activities", "totalLabel": "Net cash (used in) provided by financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided by (Used in) Financing Activities [Abstract]", "terseLabel": "Financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivities": { "auth_ref": [ "r161", "r166" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.", "label": "Net Cash Provided by (Used in) Investing Activities", "totalLabel": "Net cash (used in) provided by investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided by (Used in) Investing Activities [Abstract]", "terseLabel": "Investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivities": { "auth_ref": [ "r161", "r165", "r169" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": null, "parentTag": null, "root": true, "weight": null } }, "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.", "label": "Net Cash Provided by (Used in) Operating Activities", "terseLabel": "Net Cash Provided by (Used in) Operating Activities", "totalLabel": "Net cash provided by operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided by (Used in) Operating Activities [Abstract]", "terseLabel": "Operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NetIncomeLoss": { "auth_ref": [ "r31", "r32", "r136", "r169", "r206", "r640", "r709" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome": { "order": 2.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 }, "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.", "label": "Net Income (Loss) Attributable to Parent", "terseLabel": "Net income", "totalLabel": "Net income", "verboseLabel": "Net income" } } }, "localname": "NetIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity", "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails", "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsOfOperationsDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Income (Loss) Available to Common Stockholders, Diluted [Abstract]", "terseLabel": "Numerator" } } }, "localname": "NetIncomeLossAvailableToCommonStockholdersDilutedAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NetInvestmentIncome": { "auth_ref": [ "r711", "r724" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 2.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 }, "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails": { "order": 3.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.", "label": "Net Investment Income", "terseLabel": "Net Investment Income", "totalLabel": "Net investment income", "verboseLabel": "Net investment income" } } }, "localname": "NetInvestmentIncome", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact.", "label": "New Accounting Pronouncements, Policy [Policy Text Block]", "verboseLabel": "Recent Accounting Pronouncements - Adopted and Not Yet Adopted" } } }, "localname": "NewAccountingPronouncementsPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_NoncontrollingInterestInVariableInterestEntity": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Portion of equity (net assets) in a variable interest entity (VIE) not attributable, directly or indirectly, to the parent entity. That is, this is the portion of equity in a VIE that is attributable to the noncontrolling interest (previously referred to as minority interest).", "label": "Noncontrolling Interest in Variable Interest Entity", "terseLabel": "Noncontrolling interest in Variable Interest Entity" } } }, "localname": "NoncontrollingInterestInVariableInterestEntity", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance": { "auth_ref": [ "r372", "r527", "r529" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.", "label": "Noncontrolling Interest, Increase from Subsidiary Equity Issuance", "terseLabel": "Change in equity of non-controlling interest" } } }, "localname": "NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_NoncontrollingInterestMember": { "auth_ref": [ "r524" ], "lang": { "en-US": { "role": { "documentation": "This element represents that portion of equity (net assets) in a subsidiary not attributable, directly or indirectly, to the parent. A noncontrolling interest is sometimes called a minority interest.", "label": "Noncontrolling Interest [Member]", "terseLabel": "Non-controlling Interest" } } }, "localname": "NoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "domainItemType" }, "us-gaap_NoncurrentAssets": { "auth_ref": [ "r238" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.", "label": "Long-Lived Assets", "verboseLabel": "Long-lived assets" } } }, "localname": "NoncurrentAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfFinancialInformationByGeographicLocationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NondesignatedMember": { "auth_ref": [ "r547" ], "lang": { "en-US": { "role": { "documentation": "Derivative instruments not designated as hedging instruments.", "label": "Not Designated as Hedging Instrument [Member]", "terseLabel": "Not Designated as Hedging Instrument" } } }, "localname": "NondesignatedMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NonredeemablePreferredStockMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Preferred shares that are not redeemable before liquidation of the entity. Preferred shares may provide a preferential dividend to the dividend on common stock and may take precedence over common stock in the event of a liquidation. Preferred shares typically represent an ownership interest in the company.", "label": "Nonredeemable Preferred Stock [Member]", "terseLabel": "Non-redeemable preferred stocks" } } }, "localname": "NonredeemablePreferredStockMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NumberOfReportableSegments": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.", "label": "Number of Reportable Segments", "terseLabel": "Number of reportable segments" } } }, "localname": "NumberOfReportableSegments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "integerItemType" }, "us-gaap_OperatingLeasesFutureMinimumPaymentsDue": { "auth_ref": [ "r599", "r602" ], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.", "label": "Operating Leases, Future Minimum Payments Due", "totalLabel": "Total minimum future lease payments" } } }, "localname": "OperatingLeasesFutureMinimumPaymentsDue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent": { "auth_ref": [ "r599", "r602" ], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails": { "order": 1.0, "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Operating Leases, Future Minimum Payments Due, Next Twelve Months", "terseLabel": "2018" } } }, "localname": "OperatingLeasesFutureMinimumPaymentsDueCurrent", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals": { "auth_ref": [ "r603" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Contractually required future rental payments receivable on noncancelable subleasing arrangements.", "label": "Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals", "terseLabel": "Minimum sublease payments included in total minimum future lease payments" } } }, "localname": "OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears": { "auth_ref": [ "r599", "r602" ], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails": { "order": 2.0, "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Operating Leases, Future Minimum Payments, Due in Five Years", "terseLabel": "2022" } } }, "localname": "OperatingLeasesFutureMinimumPaymentsDueInFiveYears", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears": { "auth_ref": [ "r599", "r602" ], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails": { "order": 3.0, "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Operating Leases, Future Minimum Payments, Due in Four Years", "terseLabel": "2021" } } }, "localname": "OperatingLeasesFutureMinimumPaymentsDueInFourYears", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears": { "auth_ref": [ "r599", "r602" ], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails": { "order": 4.0, "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Operating Leases, Future Minimum Payments, Due in Three Years", "terseLabel": "2020" } } }, "localname": "OperatingLeasesFutureMinimumPaymentsDueInThreeYears", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears": { "auth_ref": [ "r599", "r602" ], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails": { "order": 5.0, "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Operating Leases, Future Minimum Payments, Due in Two Years", "terseLabel": "2019" } } }, "localname": "OperatingLeasesFutureMinimumPaymentsDueInTwoYears", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter": { "auth_ref": [ "r599", "r602" ], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails": { "order": 6.0, "parentTag": "us-gaap_OperatingLeasesFutureMinimumPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Operating Leases, Future Minimum Payments, Due Thereafter", "terseLabel": "Thereafter" } } }, "localname": "OperatingLeasesFutureMinimumPaymentsDueThereafter", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsForOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasesRentExpenseNet": { "auth_ref": [ "r601" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.", "label": "Operating Leases, Rent Expense, Net", "terseLabel": "Rent expense" } } }, "localname": "OperatingLeasesRentExpenseNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasesRentExpenseSubleaseRentals1": { "auth_ref": [ "r599" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases.", "label": "Operating Leases, Rent Expense, Sublease Rentals", "terseLabel": "Sublease income" } } }, "localname": "OperatingLeasesRentExpenseSubleaseRentals1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLossCarryforwards": { "auth_ref": [ "r485" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.", "label": "Operating Loss Carryforwards", "terseLabel": "Net operating loss carryforwards" } } }, "localname": "OperatingLossCarryforwards", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesNarrativeDetails", "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLossCarryforwardsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Operating Loss Carryforwards [Line Items]", "terseLabel": "Operating Loss Carryforwards [Line Items]" } } }, "localname": "OperatingLossCarryforwardsLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_OperatingLossCarryforwardsTable": { "auth_ref": [ "r486" ], "lang": { "en-US": { "role": { "documentation": "Schedule reflecting pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.", "label": "Operating Loss Carryforwards [Table]", "terseLabel": "Operating Loss Carryforwards [Table]" } } }, "localname": "OperatingLossCarryforwardsTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfNetOperatingLossCarryforwardsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Organization, Consolidation and Presentation of Financial Statements [Abstract]" } } }, "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the general note to the financial statements for the reporting entity which may include, descriptions of the basis of presentation, business description, significant accounting policies, consolidations, reclassifications, new pronouncements not yet adopted and changes in accounting principles.", "label": "Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]", "verboseLabel": "Summary Of Significant Accounting Policies" } } }, "localname": "OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_OtherAggregatedInvestmentsMember": { "auth_ref": [ "r796" ], "lang": { "en-US": { "role": { "documentation": "Other investments in debt and equity securities and other forms of securities that provide ownership interests.", "label": "Other Security Investments [Member]", "terseLabel": "Other investments" } } }, "localname": "OtherAggregatedInvestmentsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherAssets": { "auth_ref": [ "r67", "r616", "r678" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 12.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 7.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of assets classified as other.", "label": "Other Assets", "terseLabel": "Other assets", "verboseLabel": "Other assets" } } }, "localname": "OtherAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherAssetsMember": { "auth_ref": [ "r548", "r555" ], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption encompassing other assets.", "label": "Other Assets [Member]", "verboseLabel": "Other assets" } } }, "localname": "OtherAssetsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax": { "auth_ref": [ "r111", "r122", "r592" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of tax expense (benefit), before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.", "label": "Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax", "terseLabel": "Change in foreign currency translation, net of taxes of $0.0, $(0.0), and $(0.0), respectively", "verboseLabel": "Change in foreign currency translation, net of taxes of $(2.3), $(0.4), and $5.1, respectively" } } }, "localname": "OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyParentheticalDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax": { "auth_ref": [ "r119", "r121", "r405", "r406" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": 1.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans.", "label": "Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax", "terseLabel": "Amortization of prior service cost" } } }, "localname": "OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax": { "auth_ref": [ "r113" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.", "label": "Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax", "terseLabel": "Change in unrealized gains on securities, net of taxes of $(4.3), $(0.4), and $8.8, respectively", "verboseLabel": "Change in unrealized gains on securities, net of taxes of $(66.3), $18.9, and $158.6, respectively" } } }, "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax": { "auth_ref": [ "r113", "r122" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.", "label": "Other Comprehensive Income (Loss), Available-for-sale Securities, Tax", "negatedTerseLabel": "Change in unrealized gains on securities, net of taxes of $0.0, $(0.4), and $8.8, respectively", "verboseLabel": "Change in unrealized gains on securities, net of taxes of $(66.3), $18.9, and $158.6, respectively" } } }, "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyParentheticalDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax": { "auth_ref": [ "r124", "r131" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax, before reclassification adjustments of other comprehensive income (loss).", "label": "Other Comprehensive Income (Loss), before Reclassifications, Net of Tax", "terseLabel": "Amounts reclassified from accumulated other comprehensive income" } } }, "localname": "OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax": { "auth_ref": [ "r111", "r591" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome": { "order": 3.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.", "label": "Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax", "terseLabel": "Change in foreign currency translation, net of taxes of $0.1, $(0.0), and $(0.0), respectively", "verboseLabel": "Change in foreign currency translation, net of taxes of $(2.3), $(0.4), and $5.1, respectively" } } }, "localname": "OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r128", "r129", "r131", "r364" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome": { "order": 1.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax and reclassification adjustments of other comprehensive income (loss).", "label": "Other Comprehensive Income (Loss), Net of Tax", "terseLabel": "Other comprehensive income (loss)", "totalLabel": "Total other comprehensive income (loss)" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome", "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Other Comprehensive Income (Loss), Net of Tax [Abstract]", "terseLabel": "Other comprehensive income (loss):" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax": { "auth_ref": [ "r118" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": 4.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments", "weight": -1.0 }, "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 1.0, "parentTag": "us-gaap_AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before tax, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.", "label": "Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax", "negatedTerseLabel": "Loss due to pension freeze", "totalLabel": "Total recognized in accumulated other comprehensive income (loss)" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax": { "auth_ref": [ "r118" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome": { "order": 4.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.", "label": "Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax", "negatedLabel": "Amortization of pension and postretirement unrecognized net periodic benefit cost and change in funded status, net of taxes of $11.0, $(35.2), and $(4.1), respectively", "negatedTerseLabel": "Amortization of pension and postretirement unrecognized net periodic benefit cost and change in funded status, net of taxes of $11.0, $(35.2), and $(4.1), respectively" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax": { "auth_ref": [ "r116", "r121", "r383", "r406" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.", "label": "Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax", "negatedTerseLabel": "Net gain (loss)" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax": { "auth_ref": [ "r118", "r122" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of tax (expense) benefit, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.", "label": "Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax", "terseLabel": "Amortization of pension and postretirement unrecognized net periodic benefit cost and change in funded status, net of taxes of $0.0 $(35.2), and $(4.1), and, respectively", "verboseLabel": "Amortization of pension and postretirement unrecognized net periodic benefit cost and change in funded status, net of taxes of $11.0, $(35.2), and $(4.1), respectively" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyParentheticalDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax": { "auth_ref": [ "r121", "r125", "r405", "r406" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": 2.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments", "weight": -1.0 }, "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 3.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans.", "label": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax", "negatedTerseLabel": "Amortization of net loss", "terseLabel": "Amortization of net (loss) gain" } } }, "localname": "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossTaxAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Other Comprehensive Income (Loss), Tax [Abstract]", "terseLabel": "Other Comprehensive Income (Loss), Tax [Abstract]" } } }, "localname": "OtherComprehensiveIncomeLossTaxAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails" ], "xbrltype": "stringItemType" }, "us-gaap_OtherIncome": { "auth_ref": [ "r718" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 6.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 }, "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails": { "order": 2.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of revenue and income classified as other.", "label": "Other Income", "verboseLabel": "Fees and other income" } } }, "localname": "OtherIncome", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherIncomeMember": { "auth_ref": [ "r552" ], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption encompassing other revenue.", "label": "Other Income [Member]", "terseLabel": "Other Income" } } }, "localname": "OtherIncomeMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherIntangibleAssetsMember": { "auth_ref": [ "r25" ], "lang": { "en-US": { "role": { "documentation": "Intangible assets classified as other.", "label": "Other Intangible Assets [Member]", "terseLabel": "Other Intangible Assets" } } }, "localname": "OtherIntangibleAssetsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsTables" ], "xbrltype": "domainItemType" }, "us-gaap_OtherInvestments": { "auth_ref": [ "r86", "r697" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_Investments", "weight": 1.0 }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 5.0, "parentTag": "us-gaap_Investments", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investments classified as other.", "label": "Other Investments", "terseLabel": "Other investments", "verboseLabel": "Other investments" } } }, "localname": "OtherInvestments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherInvestmentsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption encompassing other investments.", "label": "Other Investments [Member]", "terseLabel": "Other investments measured at net asset value", "verboseLabel": "Other investments" } } }, "localname": "OtherInvestmentsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherLiabilitiesMember": { "auth_ref": [ "r548", "r555" ], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption encompassing other liabilities.", "label": "Other Liabilities [Member]", "terseLabel": "Financial Liabilities", "verboseLabel": "Other liabilities" } } }, "localname": "OtherLiabilitiesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherLongdurationInsuranceProductLineMember": { "auth_ref": [ "r761" ], "lang": { "en-US": { "role": { "documentation": "Product line consisting of long-duration insurance classified as other.", "label": "Other Long-duration Insurance Product Line [Member]", "terseLabel": "Insurance lines other than short-duration" } } }, "localname": "OtherLongdurationInsuranceProductLineMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember": { "auth_ref": [ "r17", "r414", "r426" ], "lang": { "en-US": { "role": { "documentation": "Plan designed to provide participants with a postretirement benefit, other than a pension benefit.", "label": "Other Postretirement Benefit Plan [Member]", "terseLabel": "Retirement Health Benefits" } } }, "localname": "OtherPostretirementBenefitPlansDefinedBenefitMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountRecognizedInConsolidatedBalanceSheetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherReceivables": { "auth_ref": [ "r105" ], "calculation": { "http://www.assurant.com/role/PremiumsAndAccountsReceivableScheduleOfAllowanceForUncollectibleAmountsDetails": { "order": 1.0, "parentTag": "us-gaap_PremiumsAndOtherReceivablesNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount due from parties in nontrade transactions, classified as other.", "label": "Other Receivables", "verboseLabel": "Other receivables" } } }, "localname": "OtherReceivables", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PremiumsAndAccountsReceivableScheduleOfAllowanceForUncollectibleAmountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherShortTermInvestments": { "auth_ref": [ "r105", "r634", "r698" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_Investments", "weight": 1.0 }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 4.0, "parentTag": "us-gaap_Investments", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of short-term investments classified as other.", "label": "Other Short-term Investments", "terseLabel": "Short-term investments", "verboseLabel": "Short-term investments" } } }, "localname": "OtherShortTermInvestments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherShortdurationInsuranceProductLineMember": { "auth_ref": [ "r761" ], "lang": { "en-US": { "role": { "documentation": "Product line consisting of short-duration insurance classified as other.", "label": "Other Short-duration Insurance Product Line [Member]", "terseLabel": "Other short-duration insurance lines" } } }, "localname": "OtherShortdurationInsuranceProductLineMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses": { "auth_ref": [ "r287" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which a previous OTTI was recognized and the investor does not intend to sell the debt security and it is not more likely than not that the investor will be required to sell the debt security before recovery of its amortized cost basis.", "label": "Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses", "terseLabel": "Additions for credit loss impairments recognized in the current period on securities previously impaired" } } }, "localname": "OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditLossImpairmentsRecognizedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment": { "auth_ref": [ "r286" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which no such other than temporary impairment (OTTI) was previously recognized.", "label": "Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment", "terseLabel": "Additions for credit loss impairments recognized in the current period on securities not previously impaired" } } }, "localname": "OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditLossImpairmentsRecognizedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld": { "auth_ref": [ "r285", "r289" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).", "label": "Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held", "periodEndLabel": "Balance, end of year", "periodStartLabel": "Balance, beginning of year" } } }, "localname": "OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditLossImpairmentsRecognizedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows": { "auth_ref": [ "r288" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This item represents reductions in the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held due to increases in cash flows expected to be collected and recognized over the remaining life of the security.", "label": "Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Cash Flows", "negatedLabel": "Reductions for increases in cash flows expected to be collected that are recognized over the remaining life of the security" } } }, "localname": "OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditLossImpairmentsRecognizedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]", "terseLabel": "Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]" } } }, "localname": "OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditLossImpairmentsRecognizedDetails" ], "xbrltype": "stringItemType" }, "us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsTableTextBlock": { "auth_ref": [ "r284" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the amount of other than temporary impairment (OTTI) related to credit losses recognized in earnings including: (a) the beginning balance of the amount related to credit losses on debt securities held by the investor at the beginning of the period for which a portion of an OTTI was recognized in other comprehensive income; (b) additions for the amount related to the credit loss for which an OTTI was not previously recognized; (c) reductions for securities sold during the period (realized); (d) reductions for securities for which the amount previously recognized in other comprehensive income was recognized in earnings because the investor intends to sell the security or more likely than not will be required to sell the security before recovery of its amortized cost basis; (e) additional increases to the amount related to the credit loss for which an OTTI was previously recognized when the investor does not intend to sell the security and it is not more likely than not that the investor will be required to sell the security before recovery of its amortized cost basis; (f) reductions for increases in cash flows expected to be collected that are recognized over the remaining life of the security; and (g) the ending balance of the amount related to credit losses on debt securities held by the entity at the end of the period for which a portion of an OTTI was recognized in other comprehensive income.", "label": "Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block]", "terseLabel": "Credit Loss Impairments Recognized" } } }, "localname": "OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities": { "auth_ref": [ "r115", "r261", "r271" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of other than temporary impairment (OTTI) on investment in available-for-sale debt security, recognized in other comprehensive loss, attributable to noncontrolling interest.", "label": "Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Portion Attributable to Noncontrolling Interest, Available-for-sale Securities", "terseLabel": "OTTI in AOCI" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParentAvailableforsaleSecurities": { "auth_ref": [ "r115", "r261", "r271" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": 3.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": -1.0 }, "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 2.0, "parentTag": "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of other than temporary impairment (OTTI) on investment in available-for-sale debt security, recognized in other comprehensive loss, attributable to parent entity.", "label": "Other than Temporary Impairment Loss, Investments, Portion in Other Comprehensive Loss, before Tax, Portion Attributable to Parent, Available-for-sale Securities", "negatedLabel": "Portion of net loss recognized in other comprehensive income, before taxes", "negatedTerseLabel": "Portion of net loss recognized in other comprehensive income, before taxes", "verboseLabel": "Other-than-temporary impairment losses recorded as a component of AOCI" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParentAvailableforsaleSecurities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities": { "auth_ref": [ "r271" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after tax of other than temporary impairment (OTTI) on investment in available-for-sale debt security, recognized in other comprehensive loss, attributable to parent entity.", "label": "Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, Net of Tax, Portion Attributable to Parent, Available-for-sale Securities", "negatedTerseLabel": "Change in other-than-temporary impairment gains, net of taxes of $1.5, $1.0, and $2.2, respectively" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfComprehensiveIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxPortionAttributableToParentAvailableforsaleSecurities": { "auth_ref": [ "r271" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of tax (expense) benefit of other than temporary impairment (OTTI) on investment in available-for-sale debt security, recognized in other comprehensive loss, attributable to the parent entity.", "label": "Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, Tax, Portion Attributable to Parent, Available-for-sale Securities", "negatedTerseLabel": "Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, Tax, Portion Attributable to Parent, Available-for-sale Securities", "terseLabel": "Change in other-than-temporary impairment gains, net of taxes of $1.5, $1.0, and $2.2, respectively" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxPortionAttributableToParentAvailableforsaleSecurities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyParentheticalDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet": { "auth_ref": [ "r290" ], "calculation": { "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails": { "order": 2.0, "parentTag": "us-gaap_GainLossOnInvestments", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.", "label": "Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net", "negatedLabel": "Net realized losses related to other-than-temporary impairments:" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities": { "auth_ref": [ "r271" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 4.0, "parentTag": "us-gaap_Revenues", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.", "label": "Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities", "negatedTotalLabel": "Net other-than-temporary impairment losses recognized in earnings", "terseLabel": "Other-than-temporary impairment recognized in earnings" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ParentCompanyMember": { "auth_ref": [ "r33" ], "lang": { "en-US": { "role": { "documentation": "The registrant that controls, directly or indirectly, another entity (or entities). The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree.", "label": "Parent Company [Member]", "terseLabel": "Parent Company" } } }, "localname": "ParentCompanyMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyParentheticalDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PaymentsForLossesAndLossAdjustmentExpense": { "auth_ref": [ "r164", "r750" ], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after effects of reinsurance, of payments to settle insured claims and pay costs incurred in the claims settlement process.", "label": "Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid", "totalLabel": "Total paid losses and loss adjustment expenses" } } }, "localname": "PaymentsForLossesAndLossAdjustmentExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForProceedsFromOtherInvestingActivities": { "auth_ref": [ "r26", "r171", "r173" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 15.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash (inflow) outflow from investing activities classified as other.", "label": "Payments for (Proceeds from) Other Investing Activities", "negatedTerseLabel": "Other" } } }, "localname": "PaymentsForProceedsFromOtherInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForProceedsFromShortTermInvestments": { "auth_ref": [ "r171", "r172" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 11.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net amount paid (received) by the reporting entity through acquisition or sale and maturities of short-term investments with an original maturity that is three months or less which qualify for treatment as an investing activity based on management's intention and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.", "label": "Payments for (Proceeds from) Short-term Investments", "negatedLabel": "Change in short-term investments", "negatedTerseLabel": "Change in short-term investments" } } }, "localname": "PaymentsForProceedsFromShortTermInvestments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForRepurchaseOfCommonStock": { "auth_ref": [ "r22", "r160" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow to reacquire common stock during the period.", "label": "Payments for Repurchase of Common Stock", "negatedLabel": "Acquisition of common stock", "negatedTerseLabel": "Acquisition of common stock" } } }, "localname": "PaymentsForRepurchaseOfCommonStock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsOfDividends": { "auth_ref": [ "r22", "r160" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.", "label": "Payments of Dividends", "negatedLabel": "Dividends paid", "negatedTerseLabel": "Dividends paid" } } }, "localname": "PaymentsOfDividends", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation": { "auth_ref": [ "r160" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.", "label": "Payments Related to Tax Withholding for Share-based Compensation", "negatedTerseLabel": "Change in tax benefit from share-based payment arrangements" } } }, "localname": "PaymentsRelatedToTaxWithholdingForShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt": { "auth_ref": [ "r26", "r154", "r263" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow to acquire debt securities classified as available-for-sale securities, because they are not classified as either held-to-maturity securities or trading securities.", "label": "Payments to Acquire Available-for-sale Securities, Debt", "negatedLabel": "Fixed maturity securities available for sale", "negatedTerseLabel": "Fixed maturity securities available for sale" } } }, "localname": "PaymentsToAcquireAvailableForSaleSecuritiesDebt", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesEquity": { "auth_ref": [ "r26", "r155", "r263" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow to acquire equity securities classified as available-for-sale securities, because they are not classified as trading securities.", "label": "Payments to Acquire Available-for-sale Securities, Equity", "negatedLabel": "Equity securities available for sale", "negatedTerseLabel": "Equity securities available for sale" } } }, "localname": "PaymentsToAcquireAvailableForSaleSecuritiesEquity", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireBusinessesGross": { "auth_ref": [ "r26", "r155" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.", "label": "Payments to Acquire Businesses, Gross", "terseLabel": "Initial cash payment" } } }, "localname": "PaymentsToAcquireBusinessesGross", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired": { "auth_ref": [ "r26", "r155" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 10.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.", "label": "Payments to Acquire Businesses, Net of Cash Acquired", "negatedLabel": "Subsidiary, net of cash transferred" } } }, "localname": "PaymentsToAcquireBusinessesNetOfCashAcquired", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireOtherInvestments": { "auth_ref": [ "r26", "r157" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 14.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow to acquire investments classified as other.", "label": "Payments to Acquire Other Investments", "negatedLabel": "Other invested assets", "negatedTerseLabel": "Other invested assets" } } }, "localname": "PaymentsToAcquireOtherInvestments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": { "auth_ref": [ "r26", "r156" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 9.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.", "label": "Payments to Acquire Property, Plant, and Equipment", "negatedLabel": "Property and equipment and other", "negatedTerseLabel": "Property and equipment and other" } } }, "localname": "PaymentsToAcquirePropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock": { "auth_ref": [ "r412", "r423", "r424", "r426", "r427" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for pension and other postretirement benefits.", "label": "Pension and Other Postretirement Benefits Disclosure [Text Block]", "terseLabel": "Retirement And Other Employee Benefits" } } }, "localname": "PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefits" ], "xbrltype": "textBlockItemType" }, "us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent": { "auth_ref": [ "r379", "r389", "r412", "r413", "r631", "r705" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans.", "label": "Pension and Other Postretirement Defined Benefit Plans, Liabilities", "negatedLabel": "Liabilities" } } }, "localname": "PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountRecognizedInConsolidatedBalanceSheetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionContributions": { "auth_ref": [ "r164" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of cash or cash equivalents contributed by the entity to fund its pension plans.", "label": "Pension Contributions", "terseLabel": "Pension contributions" } } }, "localname": "PensionContributions", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionPlansDefinedBenefitMember": { "auth_ref": [ "r17", "r414", "r426" ], "lang": { "en-US": { "role": { "documentation": "Plan designed to provide participants with a pension benefit. Excludes other postretirement benefit plans.", "label": "Pension Plan [Member]", "terseLabel": "Pension Benefits" } } }, "localname": "PensionPlansDefinedBenefitMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountRecognizedInConsolidatedBalanceSheetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PerformanceSharesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Shares or units awarded to employees for meeting certain performance targets.", "label": "Performance Shares [Member]", "terseLabel": "Performance Share Units" } } }, "localname": "PerformanceSharesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails", "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfEstimationOfFairValueOfAwardsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PlanAssetCategoriesDomain": { "auth_ref": [ "r394", "r416" ], "lang": { "en-US": { "role": { "documentation": "Major categories of plan assets based on the nature and risk of assets in an employer's plan(s).", "label": "Plan Asset Categories [Domain]", "terseLabel": "Plan Asset Categories [Domain]" } } }, "localname": "PlanAssetCategoriesDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PlanNameAxis": { "auth_ref": [ "r432", "r453" ], "lang": { "en-US": { "role": { "documentation": "Information by plan name pertaining to equity-based compensation arrangements.", "label": "Plan Name [Axis]", "terseLabel": "Plan Name [Axis]" } } }, "localname": "PlanNameAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PlanNameDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Name of the equity-based compensation arrangement plan.", "label": "Plan Name [Domain]", "terseLabel": "Plan Name [Domain]" } } }, "localname": "PlanNameDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PolicyholderBenefitsAndClaimsIncurredGross": { "auth_ref": [ "r719" ], "calculation": { "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails": { "order": 2.0, "parentTag": "us-gaap_PolicyholderBenefitsAndClaimsIncurredNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before effect of policies assumed or ceded, of expense related to provision for policy benefits and costs incurred.", "label": "Policyholder Benefits and Claims Incurred, Direct", "terseLabel": "Direct policyholder benefits" } } }, "localname": "PolicyholderBenefitsAndClaimsIncurredGross", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PolicyholderBenefitsAndClaimsIncurredNet": { "auth_ref": [ "r662", "r719" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 1.0, "parentTag": "us-gaap_BenefitsLossesAndExpenses", "weight": 1.0 }, "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred.", "label": "Policyholder Benefits and Claims Incurred, Net", "terseLabel": "Policyholder benefits", "totalLabel": "Net policyholder benefits" } } }, "localname": "PolicyholderBenefitsAndClaimsIncurredNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PortionAtFairValueFairValueDisclosureMember": { "auth_ref": [ "r573", "r574" ], "lang": { "en-US": { "role": { "documentation": "Measured at fair value for financial reporting purposes.", "label": "Portion at Fair Value Measurement [Member]", "terseLabel": "Portion at Fair Value Measurement" } } }, "localname": "PortionAtFairValueFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PreferredStockMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Preferred shares may provide a preferential dividend to the dividend on common stock and may take precedence over common stock in the event of a liquidation. Preferred shares typically represent an ownership interest in the company.", "label": "Preferred Stock [Member]", "terseLabel": "Preferred stock" } } }, "localname": "PreferredStockMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PremiumsAndOtherReceivablesNet": { "auth_ref": [ "r707" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://www.assurant.com/role/PremiumsAndAccountsReceivableScheduleOfAllowanceForUncollectibleAmountsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Carrying amount as of the balance sheet date, net of allowance for doubtful accounts, of all premiums and other types of receivables due from other persons or entities.", "label": "Premiums and Other Receivables, Net", "totalLabel": "Total", "verboseLabel": "Premiums and accounts receivable, net" } } }, "localname": "PremiumsAndOtherReceivablesNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/PremiumsAndAccountsReceivableScheduleOfAllowanceForUncollectibleAmountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PremiumsEarnedNet": { "auth_ref": [ "r642", "r715", "r728", "r776" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 1.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 }, "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails": { "order": 1.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned.", "label": "Premiums Earned, Net", "totalLabel": "Net earned premiums", "verboseLabel": "Net earned premiums" } } }, "localname": "PremiumsEarnedNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PremiumsPercentageAssumedToNet": { "auth_ref": [ "r728" ], "lang": { "en-US": { "role": { "documentation": "Percentage of assumed premiums earned by the entity to net premiums earned.", "label": "Premiums, Percentage Assumed to Net", "terseLabel": "Premiums, percentage of amount assumed to net" } } }, "localname": "PremiumsPercentageAssumedToNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "percentItemType" }, "us-gaap_PremiumsReceivableAllowanceForDoubtfulAccounts": { "auth_ref": [ "r189", "r247", "r707" ], "calculation": { "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails": { "order": 2.0, "parentTag": "us-gaap_ReinsuranceRecoverables", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The carrying value as of the balance sheet date of the estimated valuation allowance to reduce gross premiums receivable to net realizable value.", "label": "Premiums Receivable, Allowance for Doubtful Accounts", "negatedLabel": "Less: Allowance", "netLabel": "Allowance for doubtful accounts" } } }, "localname": "PremiumsReceivableAllowanceForDoubtfulAccounts", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails", "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PremiumsReceivableAllowanceForDoubtfulAccountsEstimationMethodologyPolicy": { "auth_ref": [ "r176", "r248", "r743" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for determining the estimated allowance for doubtful accounts for premium amounts due from policyholders, insureds, and other insurance entities. May include factors that management considered, such as historical loss experience and current economic and competitive conditions.", "label": "Premiums Receivable, Allowance for Doubtful Accounts, Estimation Methodology, Policy [Policy Text Block]", "verboseLabel": "Uncollectible Receivable Balance" } } }, "localname": "PremiumsReceivableAllowanceForDoubtfulAccountsEstimationMethodologyPolicy", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance": { "auth_ref": [ "r189" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of decrease during the period to the valuation allowance account representing portions of such account associated with premium receivables that have been determined to be absolutely uncollectible or that were sold or transferred, and which receivables were simultaneously written off.", "label": "Premiums Receivable, Allowance for Doubtful Accounts, Write Offs Against Allowance", "terseLabel": "Additions or write-downs charged against allowance" } } }, "localname": "PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PremiumsReceivableAtCarryingValue": { "auth_ref": [ "r694" ], "calculation": { "http://www.assurant.com/role/PremiumsAndAccountsReceivableScheduleOfAllowanceForUncollectibleAmountsDetails": { "order": 3.0, "parentTag": "us-gaap_PremiumsAndOtherReceivablesNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The carrying amount as of the balance sheet date due the entity from (a) agents and insureds, (b) uncollected premiums and (c) others, net of the allowance for doubtful accounts.", "label": "Premiums Receivable, Net", "verboseLabel": "Insurance premiums receivable" } } }, "localname": "PremiumsReceivableAtCarryingValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PremiumsAndAccountsReceivableScheduleOfAllowanceForUncollectibleAmountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PremiumsReceivableDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Premiums Receivable Disclosure [Abstract]" } } }, "localname": "PremiumsReceivableDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_PremiumsReceivableNote": { "auth_ref": [ "r189", "r247", "r612", "r707" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for premium amounts receivable by an insurance entity.", "label": "Premiums Receivable Note [Text Block]", "verboseLabel": "Premiums And Accounts Receivable" } } }, "localname": "PremiumsReceivableNote", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PremiumsAndAccountsReceivable" ], "xbrltype": "textBlockItemType" }, "us-gaap_PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions": { "auth_ref": [ "r667" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Additions in present value of future profits asset during the year arising from acquisitions of insurance entities.", "label": "Present Value of Future Insurance Profits, Additions from Acquisitions", "terseLabel": "Additions" } } }, "localname": "PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutVobaDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PresentValueOfFutureInsuranceProfitsAmortizationExpense1": { "auth_ref": [ "r669", "r721" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of the present value of future profits asset amortized.", "label": "Present Value of Future Insurance Profits, Amortization Expense", "negatedTerseLabel": "Amortization, net of interest accrued" } } }, "localname": "PresentValueOfFutureInsuranceProfitsAmortizationExpense1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutVobaDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PresentValueOfFutureInsuranceProfitsTableTextBlock": { "auth_ref": [ "r670" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the present value of future profits arising from long-duration contracts acquired in connection with the purchase of an insurance entity.", "label": "Present Value of Future Insurance Profits [Table Text Block]", "terseLabel": "Information About VOBA and Other Intangible Assets" } } }, "localname": "PresentValueOfFutureInsuranceProfitsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_PrivateEquityFundsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investments held in private equity funds.", "label": "Private Equity Funds [Member]", "terseLabel": "Private equity fund" } } }, "localname": "PrivateEquityFundsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ProceedsAndExcessTaxBenefitFromSharebasedCompensation": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate cash inflow comprised of the amount received from (a) employees to acquire the entity's shares under incentive awards, including stock option exercises and restricted stock arrangements, and (b) the excess tax benefit arising from such transactions.", "label": "Proceeds and Excess Tax Benefit from Share-based Compensation", "terseLabel": "Withholding on stock based compensation" } } }, "localname": "ProceedsAndExcessTaxBenefitFromSharebasedCompensation", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromDivestitureOfBusinesses": { "auth_ref": [ "r26", "r151" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.", "label": "Proceeds from Divestiture of Businesses", "terseLabel": "Proceeds from sale of subsidiary" } } }, "localname": "ProceedsFromDivestitureOfBusinesses", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested": { "auth_ref": [ "r26", "r151" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This element represents the cash inflow during the period from the sale of a component of the entity.", "label": "Proceeds from Divestiture of Businesses, Net of Cash Divested", "netLabel": "Net cash consideration from disposal", "terseLabel": "Subsidiary", "verboseLabel": "Subsidiary, net of cash transferred" } } }, "localname": "ProceedsFromDivestitureOfBusinessesNetOfCashDivested", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfLongTermDebt": { "auth_ref": [ "r22", "r158" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.", "label": "Proceeds from Issuance of Long-term Debt", "terseLabel": "Issuance of debt", "verboseLabel": "Net proceeds from issuance of long-term debt" } } }, "localname": "ProceedsFromIssuanceOfLongTermDebt", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/DebtSeniorNotesDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt": { "auth_ref": [ "r22", "r158" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 10.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from issuance of long-term debt classified as other.", "label": "Proceeds from Issuance of Other Long-term Debt", "terseLabel": "Issuance of collateralized loan obligation notes" } } }, "localname": "ProceedsFromIssuanceOfOtherLongTermDebt", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromLinesOfCredit": { "auth_ref": [ "r22", "r158", "r183" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.", "label": "Proceeds from Lines of Credit", "terseLabel": "Borrowings" } } }, "localname": "ProceedsFromLinesOfCredit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities": { "auth_ref": [ "r26", "r150", "r263" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow associated with maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.", "label": "Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities", "verboseLabel": "Fixed maturity securities available for sale" } } }, "localname": "ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromMinorityShareholders": { "auth_ref": [ "r22", "r159" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership.", "label": "Proceeds from Noncontrolling Interests", "terseLabel": "Non-controlling interest" } } }, "localname": "ProceedsFromMinorityShareholders", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromPaymentsForOtherFinancingActivities": { "auth_ref": [ "r22", "r171", "r173" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow (outflow) from financing activities classified as other.", "label": "Proceeds from (Payments for) Other Financing Activities", "terseLabel": "Other" } } }, "localname": "ProceedsFromPaymentsForOtherFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleAndCollectionOfMortgageNotesReceivable": { "auth_ref": [ "r26", "r149" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from proceeds from sale of receivables arising from the mortgage note on real estate; includes collections on mortgage notes receivable that are not classified as operating cash flows.", "label": "Proceeds from Sale and Collection of Mortgage Notes Receivable", "terseLabel": "Commercial mortgage loan on real estate" } } }, "localname": "ProceedsFromSaleAndCollectionOfMortgageNotesReceivable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities": { "auth_ref": [ "r26", "r150", "r263" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow associated with the sale or maturity (principal being due) of securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.", "label": "Proceeds from Sale and Maturity of Available-for-sale Securities", "terseLabel": "Proceeds from sales" } } }, "localname": "ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsProceedsFromSalesOfAvailableForSaleSecuritiesAndGrossRealizedGainsAndGrossRealizedLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt": { "auth_ref": [ "r26", "r149", "r263" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow associated with the sale of debt securities classified as available-for-sale securities.", "label": "Proceeds from Sale of Available-for-sale Securities, Debt", "terseLabel": "Fixed maturity securities available for sale" } } }, "localname": "ProceedsFromSaleOfAvailableForSaleSecuritiesDebt", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesEquity": { "auth_ref": [ "r26", "r151", "r263" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow associated with the sale of equity securities classified as available-for-sale securities.", "label": "Proceeds from Sale of Available-for-sale Securities, Equity", "terseLabel": "Equity securities available for sale" } } }, "localname": "ProceedsFromSaleOfAvailableForSaleSecuritiesEquity", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities": { "auth_ref": [ "r162" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from the sale of other assets recognized in investing activities.", "label": "Proceeds from Sale of Other Assets, Investing Activities", "verboseLabel": "Other invested assets" } } }, "localname": "ProceedsFromSaleOfOtherAssetsInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfOtherInvestments": { "auth_ref": [ "r153", "r161", "r166" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 12.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from the sale of investments classified as other.", "label": "Proceeds from Sale of Other Investments", "terseLabel": "Other invested assets" } } }, "localname": "ProceedsFromSaleOfOtherInvestments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment": { "auth_ref": [ "r26", "r152" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 18.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.", "label": "Proceeds from Sale of Property, Plant, and Equipment", "terseLabel": "Property, buildings and equipment", "verboseLabel": "Property, buildings and equipment" } } }, "localname": "ProceedsFromSaleOfPropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSecuritizationsOfLoansHeldForInvestment": { "auth_ref": [ "r149", "r161", "r166" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from the securitization of loans held for investment. Securitization is the structured process whereby interests in loans and other receivables are packaged, underwritten, and sold in the form of asset-backed securities.", "label": "Proceeds from Securitizations of Loans Held-for-investment", "terseLabel": "Proceeds from securitization" } } }, "localname": "ProceedsFromSecuritizationsOfLoansHeldForInvestment", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProductOrServiceAxis": { "auth_ref": [ "r237" ], "lang": { "en-US": { "role": { "documentation": "Information by products and services or groups of similar products and services.", "label": "Products and Services [Axis]", "terseLabel": "Products and Services [Axis]" } } }, "localname": "ProductOrServiceAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ProductsAndServicesDomain": { "auth_ref": [ "r237" ], "lang": { "en-US": { "role": { "documentation": "Product or service, or a group of similar products or similar services.", "label": "Products and Services [Domain]", "terseLabel": "Products and Services [Domain]" } } }, "localname": "ProductsAndServicesDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember": { "auth_ref": [ "r727", "r729", "r761" ], "lang": { "en-US": { "role": { "documentation": "Product line consisting of insurance against property related losses. Includes, but is not limited to, damage, theft or legal liability for personal injury.", "label": "Property, Liability and Casualty Insurance Product Line [Member]", "terseLabel": "Property and liability insurance" } } }, "localname": "PropertyLiabilityAndCasualtyInsuranceSegmentMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PropertyPlantAndEquipmentAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Property, Plant and Equipment [Abstract]" } } }, "localname": "PropertyPlantAndEquipmentAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentByTypeAxis": { "auth_ref": [ "r90", "r333" ], "lang": { "en-US": { "role": { "documentation": "Information by type of long-lived, physical assets used to produce goods and services and not intended for resale.", "label": "Property, Plant and Equipment, Type [Axis]", "terseLabel": "Property, Plant and Equipment, Type [Axis]" } } }, "localname": "PropertyPlantAndEquipmentByTypeAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock": { "auth_ref": [ "r50", "r89", "r333", "r334" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.", "label": "Property, Plant and Equipment Disclosure [Text Block]", "terseLabel": "Property And Equipment" } } }, "localname": "PropertyPlantAndEquipmentDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PropertyAndEquipment" ], "xbrltype": "textBlockItemType" }, "us-gaap_PropertyPlantAndEquipmentGross": { "auth_ref": [ "r88", "r331" ], "calculation": { "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails": { "order": 2.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.", "label": "Property, Plant and Equipment, Gross", "totalLabel": "Total" } } }, "localname": "PropertyPlantAndEquipmentGross", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentNet": { "auth_ref": [ "r65", "r66", "r333", "r692" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 7.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails": { "order": 6.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.", "label": "Property, Plant and Equipment, Net", "terseLabel": "Property and equipment, at cost less accumulated depreciation", "totalLabel": "Total", "verboseLabel": "Property and equipment, at cost less accumulated depreciation" } } }, "localname": "PropertyPlantAndEquipmentNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/PropertyAndEquipmentComponentsOfPropertyAndEquipmentDetails", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentPolicyTextBlock": { "auth_ref": [ "r87", "r176", "r333" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, basis of assets, depreciation and depletion methods used, including composite deprecation, estimated useful lives, capitalization policy, accounting treatment for costs incurred for repairs and maintenance, capitalized interest and the method it is calculated, disposals and impairments.", "label": "Property, Plant and Equipment, Policy [Policy Text Block]", "verboseLabel": "Property And Equipment" } } }, "localname": "PropertyPlantAndEquipmentPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_PropertyPlantAndEquipmentTextBlock": { "auth_ref": [ "r65", "r333" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.", "label": "Property, Plant and Equipment [Table Text Block]", "terseLabel": "Components Of Property And Equipment" } } }, "localname": "PropertyPlantAndEquipmentTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/PropertyAndEquipmentTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_PropertyPlantAndEquipmentTypeDomain": { "auth_ref": [ "r65", "r331" ], "lang": { "en-US": { "role": { "documentation": "Listing of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.", "label": "Property, Plant and Equipment, Type [Domain]", "terseLabel": "Property, Plant and Equipment, Type [Domain]" } } }, "localname": "PropertyPlantAndEquipmentTypeDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PropertyPlantAndEquipmentUsefulLife": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.", "label": "Property, Plant and Equipment, Useful Life", "terseLabel": "Property and equipment, estimated useful lives, maximum (in years)" } } }, "localname": "PropertyPlantAndEquipmentUsefulLife", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "durationItemType" }, "us-gaap_PurchaseObligation": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.", "label": "Purchase Obligation", "totalLabel": "Purchase obligation" } } }, "localname": "PurchaseObligation", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PurchaseObligationDueInNextTwelveMonths": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails": { "order": 1.0, "parentTag": "us-gaap_PurchaseObligation", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.", "label": "Purchase Obligation, Due in Next Twelve Months", "terseLabel": "Purchase obligation, due in 2018" } } }, "localname": "PurchaseObligationDueInNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PurchaseObligationDueInSecondYear": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails": { "order": 2.0, "parentTag": "us-gaap_PurchaseObligation", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Minimum amount of purchase arrangement maturing in the second fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.", "label": "Purchase Obligation, Due in Second Year", "terseLabel": "Purchase obligation, due in 2019" } } }, "localname": "PurchaseObligationDueInSecondYear", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PurchaseObligationDueInThirdYear": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails": { "order": 3.0, "parentTag": "us-gaap_PurchaseObligation", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Minimum amount of purchase arrangement maturing in the third fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.", "label": "Purchase Obligation, Due in Third Year", "terseLabel": "Purchase obligation, due in 2020" } } }, "localname": "PurchaseObligationDueInThirdYear", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_QuarterlyFinancialInformationDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Quarterly Financial Information Disclosure [Abstract]" } } }, "localname": "QuarterlyFinancialInformationDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_QuarterlyFinancialInformationTextBlock": { "auth_ref": [ "r209", "r210", "r212" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information.", "label": "Quarterly Financial Information [Text Block]", "verboseLabel": "Quarterly Results Of Operations (Unaudited)" } } }, "localname": "QuarterlyFinancialInformationTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnaudited" ], "xbrltype": "textBlockItemType" }, "us-gaap_RangeAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by range, including, but not limited to, upper and lower bounds.", "label": "Range [Axis]", "terseLabel": "Range [Axis]" } } }, "localname": "RangeAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RangeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Extent of variation, for example, but not limited to, upper and lower bounds.", "label": "Range [Domain]", "terseLabel": "Range [Domain]" } } }, "localname": "RangeMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RealEstateFundsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investments in funds that invest in commercial or residential real estate.", "label": "Real Estate Funds [Member]", "terseLabel": "Real estate fund" } } }, "localname": "RealEstateFundsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RealizedGainLossOnInvestmentsTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of realized gains and losses on investments reported in the statement of income.", "label": "Realized Gain (Loss) on Investments [Table Text Block]", "terseLabel": "Net Realized Gains (Losses), Including Other-Than-Temporary Impairments" } } }, "localname": "RealizedGainLossOnInvestmentsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_RealizedInvestmentGainsLosses": { "auth_ref": [ "r717", "r745" ], "calculation": { "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails": { "order": 4.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.", "label": "Realized Investment Gains (Losses)", "terseLabel": "Net realized gains on investments" } } }, "localname": "RealizedInvestmentGainsLosses", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]", "terseLabel": "Amount reclassified from accumulated other comprehensive income" } } }, "localname": "ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax": { "auth_ref": [ "r124" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": 3.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of reclassification adjustments of other comprehensive income (loss).", "label": "Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax", "negatedTerseLabel": "Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax" } } }, "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax": { "auth_ref": [ "r124", "r131" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after tax of reclassification adjustments of other comprehensive income (loss).", "label": "Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax", "negatedTerseLabel": "Amounts reclassified from accumulated other comprehensive income" } } }, "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by item reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification out of Accumulated Other Comprehensive Income [Axis]", "terseLabel": "Reclassification out of Accumulated Other Comprehensive Income [Axis]" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Item reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification out of Accumulated Other Comprehensive Income [Domain]", "terseLabel": "Reclassification out of Accumulated Other Comprehensive Income [Domain]" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Identifies item reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification out of Accumulated Other Comprehensive Income [Member]", "terseLabel": "Reclassification out of Accumulated other Comprehensive Income" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about items reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification out of Accumulated Other Comprehensive Income [Table]", "terseLabel": "Reclassification out of Accumulated Other Comprehensive Income [Table]" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]", "terseLabel": "Reclassification Out Of Accumulated Other Comprehensive Income" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable": { "auth_ref": [ "r230", "r232" ], "lang": { "en-US": { "role": { "documentation": "Identification, description, and amounts of all significant reconciling items in the reconciliation of a significant segment item of information disclosed (for example, liabilities) other than profit (loss), revenues, or assets, between reportable segments in total and the entity's consolidated total for that significant segment item disclosed.", "label": "Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table]", "terseLabel": "Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table]" } } }, "localname": "ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTextBlock": { "auth_ref": [ "r230", "r232" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of each significant reconciling item, other than profit (loss), revenues, or assets, in the reconciliation of totals of such items in reportable segments to the entity's corresponding consolidated amount.", "label": "Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table Text Block]", "terseLabel": "Summary Of Net Earned Premiums By Segment And Product" } } }, "localname": "ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]", "terseLabel": "Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]" } } }, "localname": "ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfUnrecognizedTaxBenefitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReinsuranceAccountingPolicy": { "auth_ref": [ "r176", "r662", "r663", "r703", "r779", "r781" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of reinsurance accounting policy, for example, but not limited to, description of the methodologies and assumptions underlying determination of reinsurance recoverables, reinsurance payables and retention policy.", "label": "Reinsurance Accounting Policy [Policy Text Block]", "verboseLabel": "Reinsurance" } } }, "localname": "ReinsuranceAccountingPolicy", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ReinsuranceDisclosuresAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Reinsurance Disclosures [Abstract]" } } }, "localname": "ReinsuranceDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed": { "auth_ref": [ "r662" ], "calculation": { "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails": { "order": 3.0, "parentTag": "us-gaap_PolicyholderBenefitsAndClaimsIncurredNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of policy benefits and costs incurred for policies assumed.", "label": "Policyholder Benefits and Claims Incurred, Assumed", "terseLabel": "Benefits, assumed from other companies", "verboseLabel": "Policyholder benefits assumed" } } }, "localname": "ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded": { "auth_ref": [ "r662" ], "calculation": { "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails": { "order": 1.0, "parentTag": "us-gaap_PolicyholderBenefitsAndClaimsIncurredNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of reduction of provision for policy benefits and costs incurred for policies ceded.", "label": "Policyholder Benefits and Claims Incurred, Ceded", "negatedLabel": "Policyholder benefits ceded", "terseLabel": "Benefits, ceded to other companies" } } }, "localname": "ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceEffectOfReinsuranceOnPremiumsEarnedAndBenefitsIncurredDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReinsurancePayable": { "auth_ref": [ "r702" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The carrying amount as of the balance sheet date of the known and estimated amounts owed to insurers under reinsurance treaties or other arrangements.", "label": "Reinsurance Payable", "terseLabel": "Reinsurance balances payable" } } }, "localname": "ReinsurancePayable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]", "terseLabel": "Reinsurance [Line Items]" } } }, "localname": "ReinsurancePremiumsForInsuranceCompaniesByProductSegmentLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentTable": { "auth_ref": [ "r658", "r728" ], "lang": { "en-US": { "role": { "documentation": "Describes the information required to be disclosed which includes the type of insurance, gross amount of premiums, premiums ceded to other companies, premiums assumed from other companies, net amount of premium revenue, and the percentage of the premiums assumed to net premium revenue.", "label": "Reinsurance Premiums for Insurance Companies, by Product Segment [Table]", "terseLabel": "Reinsurance Premiums for Insurance Companies, by Product Segment [Table]" } } }, "localname": "ReinsurancePremiumsForInsuranceCompaniesByProductSegmentTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceNarrativeDetails", "http://www.assurant.com/role/ScheduleIvReinsuranceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments": { "auth_ref": [ "r741", "r748", "r751" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after valuation allowance, recoverable under reinsurance contracts for losses reported to the ceding insurer but not yet paid and amounts expected for incurred losses and settlement expenses, which have not yet been reported to the ceding insurer.", "label": "Reinsurance Recoverable for Unpaid Claims and Claims Adjustments", "terseLabel": "Total reinsurance recoverable on unpaid claims" } } }, "localname": "ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReinsuranceRecoverables": { "auth_ref": [ "r664", "r695", "r740" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.", "label": "Reinsurance Recoverables, Including Reinsurance Premium Paid", "terseLabel": "Reinsurance recoverables", "totalLabel": "Net reinsurance recoverable", "verboseLabel": "Total reinsurance recoverables" } } }, "localname": "ReinsuranceRecoverables", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ReinsuranceNarrativeDetails", "http://www.assurant.com/role/ReinsuranceReinsuranceRecoverableDetails", "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReinsuranceRecoverablesGross": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails": { "order": 1.0, "parentTag": "us-gaap_ReinsuranceRecoverables", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before valuation allowance recoverable under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.", "label": "Reinsurance Recoverables, Gross", "terseLabel": "Reinsurance recoverables", "verboseLabel": "Best Ratings of Reinsurer" } } }, "localname": "ReinsuranceRecoverablesGross", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReinsuranceScheduleOfRatingForExistingReinsuranceDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReinsuranceTextBlock": { "auth_ref": [ "r662", "r663", "r708", "r742", "r776", "r777", "r778", "r780" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure pertaining to the existence, magnitude and information about insurance that has been ceded to or assumed from another insurance company, including the methodologies and assumptions used in determining recorded amounts.", "label": "Reinsurance [Text Block]", "verboseLabel": "Reinsurance" } } }, "localname": "ReinsuranceTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/Reinsurance" ], "xbrltype": "textBlockItemType" }, "us-gaap_RepaymentsOfDebt": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.", "label": "Repayments of Debt", "negatedLabel": "Repayment of debt, including extinguishment" } } }, "localname": "RepaymentsOfDebt", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ResidentialMortgageBackedSecuritiesMember": { "auth_ref": [ "r271" ], "lang": { "en-US": { "role": { "documentation": "Securities collateralized by residential real estate mortgage loans.", "label": "Residential Mortgage Backed Securities [Member]", "terseLabel": "Residential mortgage-backed" } } }, "localname": "ResidentialMortgageBackedSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RestrictedStockUnitsRSUMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time or when specified performance conditions are met.", "label": "Restricted Stock Units (RSUs) [Member]", "terseLabel": "Restricted Stock Units" } } }, "localname": "RestrictedStockUnitsRSUMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RestructuringCharges": { "auth_ref": [ "r168", "r339", "r341", "r343" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.", "label": "Restructuring Charges", "terseLabel": "Restructuring Charges" } } }, "localname": "RestructuringCharges", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RestructuringCostAndReserveAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of restructuring cost.", "label": "Restructuring Type [Axis]", "terseLabel": "Restructuring Type [Axis]" } } }, "localname": "RestructuringCostAndReserveAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RestructuringReserve": { "auth_ref": [ "r340", "r342" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.", "label": "Restructuring Reserve", "terseLabel": "Restructuring reserve" } } }, "localname": "RestructuringReserve", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsAccumulatedDeficit": { "auth_ref": [ "r80", "r371", "r686" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings (Accumulated Deficit)", "terseLabel": "Retained earnings", "verboseLabel": "Retained earnings" } } }, "localname": "RetainedEarningsAccumulatedDeficit", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings [Member]", "terseLabel": "Retained Earnings" } } }, "localname": "RetainedEarningsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RevenueRecognitionPremiumsEarnedPolicy": { "auth_ref": [ "r176", "r771", "r772" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for determining revenue and timing of recognition as revenue of premiums received from policyholders, insureds and other insurance entities (the effects of ceding and assuming insurance policy risks) for the entity's insurance products.", "label": "Revenue Recognition, Premiums Earned, Policy [Policy Text Block]", "terseLabel": "Premiums" } } }, "localname": "RevenueRecognitionPremiumsEarnedPolicy", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_Revenues": { "auth_ref": [ "r140" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 1.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 }, "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).", "label": "Revenues", "terseLabel": "Total revenues", "totalLabel": "Total revenues", "verboseLabel": "Revenues" } } }, "localname": "Revenues", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsOfOperationsDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfFinancialInformationByGeographicLocationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenuesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Revenues [Abstract]", "terseLabel": "Revenues" } } }, "localname": "RevenuesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Revenues from External Customers and Long-Lived Assets [Line Items]", "terseLabel": "Revenues from External Customers and Long-Lived Assets [Line Items]" } } }, "localname": "RevenuesFromExternalCustomersAndLongLivedAssetsLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfFinancialInformationByGeographicLocationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RevolvingCreditFacilityMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount.", "label": "Revolving Credit Facility [Member]", "terseLabel": "Revolving Credit Facility" } } }, "localname": "RevolvingCreditFacilityMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtCreditFacilityDetails", "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ScenarioForecastMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The reporting scenario used to indicate financial results forecast for a future period.", "label": "Scenario, Forecast [Member]", "terseLabel": "Expected acquisition" } } }, "localname": "ScenarioForecastMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ScenarioUnspecifiedDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Any scenario, that is, the particular reporting scenario is left unspecified. Scenarios distinguish among different kinds of business reporting facts, as for example actual versus budgeted figures.", "label": "Scenario, Unspecified [Domain]", "terseLabel": "Scenario, Unspecified [Domain]" } } }, "localname": "ScenarioUnspecifiedDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ScheduleOfAccumulatedAndProjectedBenefitObligationsTableTextBlock": { "auth_ref": [ "r396" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of benefit obligations including accumulated benefit obligation and projected benefit obligation.", "label": "Schedule of Accumulated and Projected Benefit Obligations [Table Text Block]", "terseLabel": "Summary Of Projected Benefit Obligations And The Accumulated Benefit Obligations" } } }, "localname": "ScheduleOfAccumulatedAndProjectedBenefitObligationsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock": { "auth_ref": [ "r124" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the components of accumulated other comprehensive income (loss).", "label": "Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]", "terseLabel": "Components Of Accumulated Other Comprehensive Income, Net Of Tax" } } }, "localname": "ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock": { "auth_ref": [ "r391" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall.", "label": "Schedule of Allocation of Plan Assets [Table Text Block]", "verboseLabel": "Allocation Of Plan Assets, Based On The Fair Value Of Assets Held And Target Allocation" } } }, "localname": "ScheduleOfAllocationOfPlanAssetsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock": { "auth_ref": [ "r389" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the amounts that are recognized in the balance sheet (or statement of financial position) for pension plans and/or other employee benefit plans, showing separately the assets and current and noncurrent liabilities (if applicable) recognized.", "label": "Schedule of Amounts Recognized in Balance Sheet [Table Text Block]", "verboseLabel": "Amount Recognized In Consolidated Balance Sheets" } } }, "localname": "ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock": { "auth_ref": [ "r405" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost.", "label": "Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]", "terseLabel": "Amounts Recognized In Accumulated Other Comprehensive Income" } } }, "localname": "ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable": { "auth_ref": [ "r205" ], "lang": { "en-US": { "role": { "documentation": "Schedule for securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by Antidilutive Securities.", "label": "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]", "terseLabel": "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]" } } }, "localname": "ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Schedule of Available-for-sale Securities [Line Items]", "terseLabel": "Schedule of Available-for-sale Securities [Line Items]" } } }, "localname": "ScheduleOfAvailableForSaleSecuritiesLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfAvailableForSaleSecuritiesTable": { "auth_ref": [ "r6", "r271", "r276", "r282", "r283", "r284", "r292", "r647", "r652" ], "lang": { "en-US": { "role": { "documentation": "Schedule of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.", "label": "Schedule of Available-for-sale Securities [Table]", "terseLabel": "Schedule of Available-for-sale Securities [Table]" } } }, "localname": "ScheduleOfAvailableForSaleSecuritiesTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable": { "auth_ref": [ "r498", "r499" ], "lang": { "en-US": { "role": { "documentation": "Schedule reflecting each material business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities.", "label": "Schedule of Business Acquisitions, by Acquisition [Table]", "terseLabel": "Schedule of Business Acquisitions, by Acquisition [Table]" } } }, "localname": "ScheduleOfBusinessAcquisitionsByAcquisitionTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock": { "auth_ref": [ "r492" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.", "label": "Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]", "terseLabel": "Components Of Income Tax Expense (Benefit)" } } }, "localname": "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfCondensedFinancialStatementsTable": { "auth_ref": [ "r46", "r188", "r523", "r644", "r656" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about condensed financial statements, including, but not limited to, the balance sheet, income statement, and statement of cash flows.", "label": "Condensed Financial Statements [Table]", "terseLabel": "Condensed Financial Statements [Table]" } } }, "localname": "ScheduleOfCondensedFinancialStatementsTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedCashFlowsParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedIncomeStatementParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyDetails", "http://www.assurant.com/role/ScheduleIiParentOnlyScheduleIiCondensedStatementOfComprehensiveIncomeParentOnlyParentheticalDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock": { "auth_ref": [ "r484" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.", "label": "Schedule of Deferred Tax Assets and Liabilities [Table Text Block]", "terseLabel": "Summary Of Deferred Tax Assets And Deferred Tax Liabilities" } } }, "localname": "ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable": { "auth_ref": [ "r411", "r412", "r413", "r414", "r418" ], "lang": { "en-US": { "role": { "documentation": "Disclosures about an individual defined benefit pension plan or an other postretirement defined benefit plan. It may be appropriate to group certain similar plans. Also includes schedule for fair value of plan assets by major categories of plan assets by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), Significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).", "label": "Schedule of Defined Benefit Plans Disclosures [Table]", "terseLabel": "Schedule of Defined Benefit Plans Disclosures [Table]" } } }, "localname": "ScheduleOfDefinedBenefitPlansDisclosuresTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAllocationOfPlanAssetsBasedOnFairValueOfAssetsHeldAndTargetAllocationDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountRecognizedInConsolidatedBalanceSheetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsAmountsRecognizedInAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEffectOfOnePercentChangeInAssumedHealthCareCostDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsEstimatedFutureBenefitPaymentsFromPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfFairValueHierarchyForPlanAssetsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfHealthCareCostTrendRatesDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfPensionBenefitsAndRetirementHealthBenefitsPlansDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsSummaryOfProjectedBenefitObligationsAndAccumulatedBenefitObligationsDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock": { "auth_ref": [ "r411", "r412", "r413", "r414", "r418" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans.", "label": "Schedule of Defined Benefit Plans Disclosures [Table Text Block]", "terseLabel": "Summary Of Pension Benefits And Retirement Health Benefits Plans" } } }, "localname": "ScheduleOfDefinedBenefitPlansDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock": { "auth_ref": [ "r48", "r50", "r51", "r52", "r53", "r54", "r55", "r56", "r57", "r58", "r59", "r336", "r338" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.", "label": "Disposal Groups, Including Discontinued Operations [Table Text Block]", "terseLabel": "Gain by Transaction Component" } } }, "localname": "ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitieTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable": { "auth_ref": [ "r196", "r198", "r204", "r208" ], "lang": { "en-US": { "role": { "documentation": "The table contains disclosure pertaining to an entity's basic earnings per share.", "label": "Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table]", "terseLabel": "Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table]" } } }, "localname": "ScheduleOfEarningsPerShareBasicByCommonClassTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTextBlock": { "auth_ref": [ "r196", "r198", "r204", "r208" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the effect of income (loss) on basic earnings per share.", "label": "Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block]", "terseLabel": "Net Income, Weighted Average Common Shares Used In Calculating Basic Earnings Per Common Share And Diluted EPS" } } }, "localname": "ScheduleOfEarningsPerShareBasicByCommonClassTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEffectOfFourthQuarterEventsTable": { "auth_ref": [ "r212" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about transactions recognized in the fourth quarter, including, but not limited to, disposals of components of an entity, unusual or infrequently occurring items, or both, effect from changes in accounting estimates and effect of year-end adjustments.", "label": "Effect of Fourth Quarter Events [Table]", "terseLabel": "Effect of Fourth Quarter Events [Table]" } } }, "localname": "ScheduleOfEffectOfFourthQuarterEventsTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesTableTextBlock": { "auth_ref": [ "r410" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the effect of a one-percentage-point increase and the effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs and the accumulated postretirement benefit obligation for health care benefits.", "label": "Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]", "verboseLabel": "Effect Of One Percent Change In Assumed Health Care Cost" } } }, "localname": "ScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock": { "auth_ref": [ "r467" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.", "label": "Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]", "terseLabel": "Reconciliation Of Federal Income Tax Rate" } } }, "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable": { "auth_ref": [ "r191", "r192", "r193" ], "lang": { "en-US": { "role": { "documentation": "Schedule of prior period adjustments to correct an error in previously issued financial statements. The disclosure may include, but is not limited to: (1) the effect of the correction on each financial statement line item and any per-share amounts affected for each prior period presented (2) the cumulative effect of the change on retained earnings or other appropriate components of equity or net assets in the statement of financial position, as of the beginning of the earliest period presented, and (3) the effect of the prior period adjustment (both gross and net of applicable income tax) on the net income of each prior period presented in the entity's annual report for the year in which the adjustments are made. This table can be used to disclose the amounts as previously reported and the effect of the correction or other adjustment on per line item or per share amount basis. This table uses as its line items financial statement line items that are affected by prior period adjustments.", "label": "Schedule of Error Corrections and Prior Period Adjustment Restatement [Table]", "terseLabel": "Schedule of Error Corrections and Prior Period Adjustment Restatement [Table]" } } }, "localname": "ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock": { "auth_ref": [ "r397" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter.", "label": "Schedule of Expected Benefit Payments [Table Text Block]", "verboseLabel": "Estimated Future Benefit Payments From The Plans" } } }, "localname": "ScheduleOfExpectedBenefitPaymentsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock": { "auth_ref": [ "r557" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).", "label": "Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]", "terseLabel": "Balances of assets and liabilities held by consolidated investment entities at fair value", "verboseLabel": "Fair Value For Assets And Liabilities Measured At Fair Value On A Recurring Basis" } } }, "localname": "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresTables", "http://www.assurant.com/role/VariableInterestEntitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]", "terseLabel": "Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]" } } }, "localname": "ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTable": { "auth_ref": [ "r666", "r785" ], "lang": { "en-US": { "role": { "documentation": "Disclose the aggregate fair value of assets, by major investment asset category, supporting separate accounts with additional insurance benefits and minimum investment return guarantees as of each date for which a statement of financial position is presented. The taxonomy for investment disclosures is utilized to tag elements that represent more detailed breakdowns of the major investment categories specified in reporting regulations.", "label": "Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table]", "terseLabel": "Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table]" } } }, "localname": "ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable": { "auth_ref": [ "r245" ], "lang": { "en-US": { "role": { "documentation": "Schedule detailing credit quality information related to financing receivables by credit quality indicator and by class of financing receivable.", "label": "Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table]", "terseLabel": "Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table]" } } }, "localname": "ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCreditQualityIndicatorsForCommercialMortgageLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable": { "auth_ref": [ "r318", "r322" ], "lang": { "en-US": { "role": { "documentation": "Schedule of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.", "label": "Schedule of Finite-Lived Intangible Assets [Table]", "terseLabel": "Schedule of Finite-Lived Intangible Assets [Table]" } } }, "localname": "ScheduleOfFiniteLivedIntangibleAssetsTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsFutureAmortizationExpensesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsTables", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsEstimatedAmortizationOfVobaDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock": { "auth_ref": [ "r604" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date.", "label": "Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]", "terseLabel": "Schedule of Future Minimum Rental Payments for Operating Leases" } } }, "localname": "ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Gain (Loss) on Investments [Line Items]", "terseLabel": "Gain (Loss) on Investments [Line Items]" } } }, "localname": "ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfGainLossOnInvestmentsTable": { "auth_ref": [ "r258", "r265", "r295", "r299" ], "lang": { "en-US": { "role": { "documentation": "Summarization of information required and determined to be disclosed concerning realized and unrealized gains and losses reported in the statement of income which have resulted from the sale or disposal and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments.", "label": "Schedule of Gain (Loss) on Investments [Table]", "terseLabel": "Schedule of Gain (Loss) on Investments [Table]" } } }, "localname": "ScheduleOfGainLossOnInvestmentsTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfGoodwillTextBlock": { "auth_ref": [ "r313", "r315" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.", "label": "Schedule of Goodwill [Table Text Block]", "terseLabel": "Schedule Of Goodwill" } } }, "localname": "ScheduleOfGoodwillTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfHealthCareCostTrendRatesTableTextBlock": { "auth_ref": [ "r409" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the assumed health care cost trend rates for the next year used to measure the expected cost of benefits covered by the plans, including the ultimate trend rate(s) and when that rate is expected to be achieved.", "label": "Schedule of Health Care Cost Trend Rates [Table Text Block]", "terseLabel": "Summary Of Health Care Cost Trend Rates" } } }, "localname": "ScheduleOfHealthCareCostTrendRatesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock": { "auth_ref": [ "r184" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of income before income tax between domestic and foreign jurisdictions.", "label": "Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]", "terseLabel": "Information About Domestic And Foreign Pre-Tax Income" } } }, "localname": "ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfInvestmentsTable": { "auth_ref": [ "r790" ], "lang": { "en-US": { "role": { "documentation": "A container table for all schedule of investment items. It ties in the \"Legal Entity [Axis]\" to all of its contained line items.", "label": "Schedule of Investments [Table]", "terseLabel": "Schedule of Investments [Table]" } } }, "localname": "ScheduleOfInvestmentsTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense": { "auth_ref": [ "r752" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the activity in the reserve for settling insured claims and expenses incurred in the claims settlement process for the period. The estimated liability includes the amount of money that will be required for future payments of (a) claims that have been reported to the insurer, (b) claims related to insured events that have occurred but that have not been reported to the insurer as of the date the liability is estimated, and (c) claim adjustment expenses. Claim adjustment expenses include costs incurred in the claim settlement process such as legal fees; outside adjuster fees; and costs to record, process, and adjust claims.", "label": "Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]", "terseLabel": "Roll Forward of Claims and Benefits Payable" } } }, "localname": "ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfNetBenefitCostsTableTextBlock": { "auth_ref": [ "r399" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.", "label": "Schedule of Net Benefit Costs [Table Text Block]", "terseLabel": "Components Of Net Periodic Benefit Cost" } } }, "localname": "ScheduleOfNetBenefitCostsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock": { "auth_ref": [ "r211" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data.", "label": "Quarterly Financial Information [Table Text Block]", "verboseLabel": "Summary Of Quarterly Results Of Operations" } } }, "localname": "ScheduleOfQuarterlyFinancialInformationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/QuarterlyResultsOfOperationsUnauditedTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock": { "auth_ref": [ "r140", "r239" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries.", "label": "Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]", "terseLabel": "Summary Of Financial Information By Geographic Location" } } }, "localname": "ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable": { "auth_ref": [ "r132", "r134", "r239" ], "lang": { "en-US": { "role": { "documentation": "Schedule of material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries.", "label": "Schedule of Revenues from External Customers and Long-Lived Assets [Table]", "terseLabel": "Schedule of Revenues from External Customers and Long-Lived Assets [Table]" } } }, "localname": "ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfFinancialInformationByGeographicLocationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable": { "auth_ref": [ "r225", "r226", "r227", "r231", "r313" ], "lang": { "en-US": { "role": { "documentation": "A table disclosing the profit or loss and total assets for each reportable segment of the entity. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.", "label": "Schedule of Segment Reporting Information, by Segment [Table]", "terseLabel": "Schedule of Segment Reporting Information, by Segment [Table]" } } }, "localname": "ScheduleOfSegmentReportingInformationBySegmentTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock": { "auth_ref": [ "r225", "r226", "r227", "r231", "r313" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.", "label": "Schedule of Segment Reporting Information, by Segment [Table Text Block]", "terseLabel": "Financial Information By Segment" } } }, "localname": "ScheduleOfSegmentReportingInformationBySegmentTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceBasedUnitsVestedAndExpectedToVestTableTextBlock": { "auth_ref": [ "r444" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the number, aggregate intrinsic value (except for nonpublic entities), and weighted-average remaining contractual term for both performance-based awards (or share units) outstanding and performance-based awards (or share units) fully vested and expected to vest at the date of the latest statement of financial position.", "label": "Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest [Table Text Block]", "terseLabel": "Schedule Of Company's Outstanding Performance Share Units" } } }, "localname": "ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceBasedUnitsVestedAndExpectedToVestTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": { "auth_ref": [ "r432", "r453" ], "lang": { "en-US": { "role": { "documentation": "Components of an equity-based arrangement under which compensation is awarded to employees, typically comprised of compensation expense; changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan; and cash flow effects resulting from the equity-based payment arrangement. Component disclosures are by type of award and plan name.", "label": "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]", "terseLabel": "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]" } } }, "localname": "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfEstimationOfFairValueOfAwardsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock": { "auth_ref": [ "r436" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.", "label": "Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]", "terseLabel": "Summary Of Company's Outstanding Restricted Stock Units" } } }, "localname": "ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock": { "auth_ref": [ "r445" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.", "label": "Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]", "terseLabel": "Schedule of Share-based Payment Award, ESPP, Valuation Assumptions" } } }, "localname": "ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock": { "auth_ref": [ "r445" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.", "label": "Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]", "terseLabel": "Schedule Of Estimation Of Fair Value Of Awards" } } }, "localname": "ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfStockByClassTable": { "auth_ref": [ "r101", "r180", "r359", "r361", "r362", "r365", "r366", "r367", "r368", "r369", "r370", "r371" ], "lang": { "en-US": { "role": { "documentation": "Schedule detailing information related to equity by class of stock. Class of stock includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. It also includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity.", "label": "Schedule of Stock by Class [Table]", "terseLabel": "Schedule of Stock by Class [Table]" } } }, "localname": "ScheduleOfStockByClassTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfStockByClassTextBlock": { "auth_ref": [ "r75", "r76", "r77", "r177", "r360", "r361", "r362", "r365", "r366", "r367", "r368", "r369", "r370", "r371" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding.", "label": "Schedule of Stock by Class [Table Text Block]", "terseLabel": "Changes In The Number Of Common Stock Shares Outstanding" } } }, "localname": "ScheduleOfStockByClassTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock": { "auth_ref": [ "r189" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements.", "label": "Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]", "verboseLabel": "Valuation And Qualifying Accounts" } } }, "localname": "ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccounts" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfVariableInterestEntitiesTable": { "auth_ref": [ "r533", "r536", "r539", "r542", "r543" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of qualitative and quantitative information related to variable interests the entity holds, whether or not such variable interest entity (VIE) is included in the reporting entity's consolidated financial statements. Includes, but is not limited to, description of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a tabular comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.", "label": "Schedule of Variable Interest Entities [Table]", "terseLabel": "Schedule of Variable Interest Entities [Table]" } } }, "localname": "ScheduleOfVariableInterestEntitiesTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock": { "auth_ref": [ "r322" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.", "label": "Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]", "terseLabel": "Future Amortization Expenses" } } }, "localname": "ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_SecuritiesFinancingTransactionAxis": { "auth_ref": [ "r106", "r187", "r613", "r615", "r633" ], "lang": { "en-US": { "role": { "documentation": "Information by type of securities financing transactions, including, but not limited to those measured at fair value or cost.", "label": "Securities Financing Transaction [Axis]", "terseLabel": "Securities Financing Transaction [Axis]" } } }, "localname": "SecuritiesFinancingTransactionAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SecuritiesFinancingTransactionTypeDomain": { "auth_ref": [ "r613" ], "lang": { "en-US": { "role": { "documentation": "Measurement of financing transaction securities held.", "label": "Securities Financing Transaction [Domain]", "terseLabel": "Securities Financing Transaction [Domain]" } } }, "localname": "SecuritiesFinancingTransactionTypeDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SegmentDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Components of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity.", "label": "Segments [Domain]", "terseLabel": "Segments [Domain]" } } }, "localname": "SegmentDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails", "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails", "http://www.assurant.com/role/ReservesTables", "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SegmentGeographicalDomain": { "auth_ref": [ "r47", "r239", "r803" ], "lang": { "en-US": { "role": { "documentation": "Geographical area.", "label": "Geographical [Domain]", "terseLabel": "Geographical [Domain]" } } }, "localname": "SegmentGeographicalDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfFinancialInformationByGeographicLocationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SegmentReportingAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Segment Reporting [Abstract]" } } }, "localname": "SegmentReportingAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_SegmentReportingDisclosureTextBlock": { "auth_ref": [ "r221", "r222", "r223", "r228", "r229", "r231", "r232", "r233", "r234", "r235", "r236", "r237", "r239", "r240" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.", "label": "Segment Reporting Disclosure [Text Block]", "terseLabel": "Segment Information" } } }, "localname": "SegmentReportingDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformation" ], "xbrltype": "textBlockItemType" }, "us-gaap_SegmentReportingInformationLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Segment Reporting Information [Line Items]", "terseLabel": "Segment Reporting Information [Line Items]" } } }, "localname": "SegmentReportingInformationLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Segment Reporting, Other Significant Reconciling Item [Line Items]", "terseLabel": "Segment Reporting, Other Significant Reconciling Item [Line Items]" } } }, "localname": "SegmentReportingOtherSignificantReconcilingItemLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SellingGeneralAndAdministrativeExpense": { "auth_ref": [ "r142", "r303" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 3.0, "parentTag": "us-gaap_BenefitsLossesAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.", "label": "Selling, General and Administrative Expense", "terseLabel": "Underwriting, general and administrative expenses" } } }, "localname": "SellingGeneralAndAdministrativeExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SellingGeneralAndAdministrativeExpensesMember": { "auth_ref": [ "r148" ], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption encompassing selling, general and administrative expense.", "label": "Selling, General and Administrative Expenses [Member]", "terseLabel": "Selling, General and Administrative Expenses" } } }, "localname": "SellingGeneralAndAdministrativeExpensesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock": { "auth_ref": [ "r176", "r461" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for inclusion of significant items in the selling, general and administrative (or similar) expense report caption.", "label": "Selling, General and Administrative Expenses, Policy [Policy Text Block]", "verboseLabel": "Underwriting, General And Administrative Expenses" } } }, "localname": "SellingGeneralAndAdministrativeExpensesPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_SeniorNotesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Bond that takes priority over other debt securities sold by the issuer. In the event the issuer goes bankrupt, senior debt holders receive priority for (must receive) repayment prior to (relative to) junior and unsecured (general) creditors.", "label": "Senior Notes [Member]", "terseLabel": "Senior Notes" } } }, "localname": "SeniorNotesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "http://www.assurant.com/role/DebtSeniorNotesDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SeparateAccountAssets": { "auth_ref": [ "r655", "r679", "r782" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 13.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The fair value of the assets held by the Entity for the benefit of separate account policyholders.", "label": "Separate Account Assets", "terseLabel": "Assets held in separate accounts" } } }, "localname": "SeparateAccountAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_SeparateAccountsLiability": { "auth_ref": [ "r655", "r685", "r782", "r783" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 10.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liability for variable contracts that meet specified criteria that are backed by assets held in separate accounts and carried at the fair value of those assets.", "label": "Separate Accounts, Liability", "terseLabel": "Liabilities related to separate accounts" } } }, "localname": "SeparateAccountsLiability", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensation": { "auth_ref": [ "r167" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows": { "order": 14.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.", "label": "Share-based Compensation", "terseLabel": "Stock based compensation expense" } } }, "localname": "ShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensationAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Share-based Compensation [Abstract]" } } }, "localname": "ShareBasedCompensationAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1": { "auth_ref": [ "r433" ], "lang": { "en-US": { "role": { "documentation": "Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period", "terseLabel": "Vesting period (in years)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod": { "auth_ref": [ "r437" ], "lang": { "en-US": { "role": { "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period", "negatedLabel": "Forfeitures, Number of Shares" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue": { "auth_ref": [ "r441" ], "lang": { "en-US": { "role": { "documentation": "Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value", "terseLabel": "Forfeitures, weighted-average grant-date fair value (in dollars per share)", "verboseLabel": "Forfeitures, weighted-average grant-date fair value (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod": { "auth_ref": [ "r439" ], "lang": { "en-US": { "role": { "documentation": "The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period", "terseLabel": "Grants, Number of Shares" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r439" ], "lang": { "en-US": { "role": { "documentation": "The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value", "terseLabel": "Grants, weight-average grant-date fair value (in dollars per share)", "verboseLabel": "Weighted average grant date fair value (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber": { "auth_ref": [ "r438" ], "lang": { "en-US": { "role": { "documentation": "The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number", "periodEndLabel": "Shares outstanding, Number of Shares, Ending Balance", "periodStartLabel": "Shares outstanding, Number of Shares, Beginning Balance" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]", "terseLabel": "Shares" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue": { "auth_ref": [ "r438" ], "lang": { "en-US": { "role": { "documentation": "The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value", "periodEndLabel": "Weighted-average grant-date fair value, shares outstanding, ending balance (in dollars per share)", "periodStartLabel": "Weighted-average grant-date fair value, shares outstanding, beginning balance (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]", "terseLabel": "Weighted-Average Grant-Date Fair Value" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod": { "auth_ref": [ "r440" ], "lang": { "en-US": { "role": { "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period", "negatedLabel": "Vests, Number of Shares" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue": { "auth_ref": [ "r443" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value", "verboseLabel": "Fair value of shares vested during the period (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r440" ], "lang": { "en-US": { "role": { "documentation": "The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value", "terseLabel": "Vests, weighted-average grant-date fair value (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate": { "auth_ref": [ "r448" ], "lang": { "en-US": { "role": { "documentation": "The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate", "terseLabel": "Dividend yield" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate": { "auth_ref": [ "r447" ], "lang": { "en-US": { "role": { "documentation": "The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate", "terseLabel": "Expected volatility" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfEstimationOfFairValueOfAwardsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum", "terseLabel": "Expected volatility, maximum" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum", "terseLabel": "Expected volatility, minimum" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate": { "auth_ref": [ "r449" ], "lang": { "en-US": { "role": { "documentation": "The risk-free interest rate assumption that is used in valuing an option on its own shares.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate", "terseLabel": "Risk free interest rate" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfEstimationOfFairValueOfAwardsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum", "terseLabel": "Risk free interest rates, maximum" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum", "terseLabel": "Risk free interest rates, minimum" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]", "terseLabel": "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfEstimationOfFairValueOfAwardsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployee": { "auth_ref": [ "r453" ], "lang": { "en-US": { "role": { "documentation": "The highest quantity of shares an employee can purchase under the plan per period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee", "terseLabel": "Maximum number of shares can be purchased each offering period per employee" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployee", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsPeriodIncreaseDecrease": { "auth_ref": [ "r436" ], "lang": { "en-US": { "role": { "documentation": "Increase (decrease) in the number of shares under non-option equity instrument agreements.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Period Increase (Decrease)", "terseLabel": "Performance adjustment (shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsPeriodIncreaseDecrease", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized": { "auth_ref": [ "r434" ], "lang": { "en-US": { "role": { "documentation": "The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized", "terseLabel": "Company's common stock authorized to employees (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased": { "auth_ref": [ "r429", "r453" ], "lang": { "en-US": { "role": { "documentation": "The weighted average of per share prices paid for shares purchased on the open market for issuance to employees under the plan.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Per Share Weighted Average Price of Shares Purchased", "terseLabel": "Discounted price of shares issued (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost": { "auth_ref": [ "r451" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "An excess of the fair value of the modified award over the fair value of the award immediately before the modification.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost", "terseLabel": "Incremental compensation cost" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod": { "auth_ref": [ "r453" ], "lang": { "en-US": { "role": { "documentation": "Number of share instruments newly issued under a share-based compensation plan.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period", "terseLabel": "Common shares issued" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": { "auth_ref": [ "r429", "r435" ], "lang": { "en-US": { "role": { "documentation": "Equity-based compensation award.", "label": "Equity Award [Domain]", "terseLabel": "Equity Award [Domain]" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationPsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationRsuActivityDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysOutstandingPerformanceShareUnitsDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfEstimationOfFairValueOfAwardsDetails", "http://www.assurant.com/role/StockBasedCompensationSummaryOfCompanysOutstandingRestrictedStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShareBasedCompensationAwardTrancheOneMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "First portion of share-based compensation award differentiated by a particular vesting feature, including, but not limited to, performance measure or service period.", "label": "Share-based Compensation Award, Tranche One [Member]", "terseLabel": "Tranche one" } } }, "localname": "ShareBasedCompensationAwardTrancheOneMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShareBasedCompensationAwardTrancheThreeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Third portion of share-based compensation award differentiated by a particular vesting feature, including, but not limited to, performance measure or service period.", "label": "Share-based Compensation Award, Tranche Three [Member]", "terseLabel": "Tranche three" } } }, "localname": "ShareBasedCompensationAwardTrancheThreeMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShareBasedCompensationAwardTrancheTwoMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Second portion of share-based compensation award differentiated by a particular vesting feature, including, but not limited to, performance measure or service period.", "label": "Share-based Compensation Award, Tranche Two [Member]", "terseLabel": "Tranche two" } } }, "localname": "ShareBasedCompensationAwardTrancheTwoMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage": { "auth_ref": [ "r433" ], "lang": { "en-US": { "role": { "documentation": "Percentage of vesting of share-based compensation awards.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage", "terseLabel": "RSU vesting terms for employees and directors" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1": { "auth_ref": [ "r446", "r456" ], "lang": { "en-US": { "role": { "documentation": "Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term", "terseLabel": "Expected term (years)" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfEstimationOfFairValueOfAwardsDetails" ], "xbrltype": "durationItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Purchase price of common stock expressed as a percentage of its fair value.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent", "terseLabel": "Percentage of stock price purchased" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShortTermDebtTypeAxis": { "auth_ref": [ "r93" ], "lang": { "en-US": { "role": { "documentation": "Information by type of short-term debt arrangement.", "label": "Short-term Debt, Type [Axis]", "terseLabel": "Short-term Debt, Type [Axis]" } } }, "localname": "ShortTermDebtTypeAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortTermDebtTypeDomain": { "auth_ref": [ "r91" ], "lang": { "en-US": { "role": { "documentation": "Type of short-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing.", "label": "Short-term Debt, Type [Domain]", "terseLabel": "Short-term Debt, Type [Domain]" } } }, "localname": "ShortTermDebtTypeDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortTermInvestmentsMember": { "auth_ref": [ "r625", "r626", "r676", "r785" ], "lang": { "en-US": { "role": { "documentation": "Investments which are not otherwise included in another category or item that the entity has the intent to sell or dispose of within one year from the date of the balance sheet.", "label": "Short-term Investments [Member]", "terseLabel": "Short-term investments" } } }, "localname": "ShortTermInvestmentsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortdurationInsuranceContractsAccidentYear2013Member": { "auth_ref": [ "r0", "r755" ], "lang": { "en-US": { "role": { "documentation": "Accident year 2013 in which a covered event occurs under the terms of the short-duration insurance contract.", "label": "Short-duration Insurance Contracts, Accident Year 2013 [Member]", "terseLabel": "2013" } } }, "localname": "ShortdurationInsuranceContractsAccidentYear2013Member", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortdurationInsuranceContractsAccidentYear2014Member": { "auth_ref": [ "r0", "r755" ], "lang": { "en-US": { "role": { "documentation": "Accident year 2014 in which a covered event occurs under the terms of the short-duration insurance contract.", "label": "Short-duration Insurance Contracts, Accident Year 2014 [Member]", "terseLabel": "2014" } } }, "localname": "ShortdurationInsuranceContractsAccidentYear2014Member", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortdurationInsuranceContractsAccidentYear2015Member": { "auth_ref": [ "r0", "r755" ], "lang": { "en-US": { "role": { "documentation": "Accident year 2015 in which a covered event occurs under the terms of the short-duration insurance contract.", "label": "Short-duration Insurance Contracts, Accident Year 2015 [Member]", "terseLabel": "2015" } } }, "localname": "ShortdurationInsuranceContractsAccidentYear2015Member", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortdurationInsuranceContractsAccidentYear2016Member": { "auth_ref": [ "r0", "r755" ], "lang": { "en-US": { "role": { "documentation": "Accident year 2016 in which a covered event occurs under the terms of the short-duration insurance contract.", "label": "Short-duration Insurance Contracts, Accident Year 2016 [Member]", "terseLabel": "2016" } } }, "localname": "ShortdurationInsuranceContractsAccidentYear2016Member", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortdurationInsuranceContractsAccidentYearAxis": { "auth_ref": [ "r0", "r755" ], "lang": { "en-US": { "role": { "documentation": "Information by accident year in which a covered event occurs under the terms of the short-duration insurance contract.", "label": "Short-duration Insurance Contracts, Accident Year [Axis]", "terseLabel": "Short-duration Insurance Contracts, Accident Year [Axis]" } } }, "localname": "ShortdurationInsuranceContractsAccidentYearAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortdurationInsuranceContractsAccidentYearDomain": { "auth_ref": [ "r0", "r755" ], "lang": { "en-US": { "role": { "documentation": "Accident year in which a covered event occurs under the terms of the short-duration insurance contract.", "label": "Short-duration Insurance Contracts, Accident Year [Domain]", "terseLabel": "Short-duration Insurance Contracts, Accident Year [Domain]" } } }, "localname": "ShortdurationInsuranceContractsAccidentYearDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortdurationInsuranceContractsClaimsDevelopmentTable": { "auth_ref": [ "r755" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about undiscounted information about claims development by accident year for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Claims Development [Table]", "terseLabel": "Short-duration Insurance Contracts, Claims Development [Table]" } } }, "localname": "ShortdurationInsuranceContractsClaimsDevelopmentTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortdurationInsuranceContractsClaimsDevelopmentTableTextBlock": { "auth_ref": [ "r755" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of undiscounted information about claims development by accident year for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Claims Development [Table Text Block]", "terseLabel": "Schedule of Claims Development" } } }, "localname": "ShortdurationInsuranceContractsClaimsDevelopmentTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseNet": { "auth_ref": [ "r754" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after reinsurance, of paid claims and allocated claim adjustment expense used in claims development for short-duration insurance contracts. Excludes unallocated claim adjustment expense.", "label": "Short-duration Insurance Contracts, Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net", "terseLabel": "Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance" } } }, "localname": "ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Short-duration Insurance Contracts, Historical Claims Duration [Line Items]", "terseLabel": "Short-duration Insurance Contracts, Historical Claims Duration [Line Items]" } } }, "localname": "ShortdurationInsuranceContractsHistoricalClaimsDurationLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationTable": { "auth_ref": [ "r760" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about average annual percentage payout of incurred claims by age, after reinsurance, for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Historical Claims Duration [Table]", "terseLabel": "Short-duration Insurance Contracts, Historical Claims Duration [Table]" } } }, "localname": "ShortdurationInsuranceContractsHistoricalClaimsDurationTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearFive": { "auth_ref": [ "r760" ], "lang": { "en-US": { "role": { "documentation": "Percentage of average annual payout, after reinsurance, in the fifth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Historical Claims Duration, Year Five", "terseLabel": "Year 5 Unaudited" } } }, "localname": "ShortdurationInsuranceContractsHistoricalClaimsDurationYearFive", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearFour": { "auth_ref": [ "r760" ], "lang": { "en-US": { "role": { "documentation": "Percentage of average annual payout, after reinsurance, in the fourth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Historical Claims Duration, Year Four", "terseLabel": "Year 4 Unaudited" } } }, "localname": "ShortdurationInsuranceContractsHistoricalClaimsDurationYearFour", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne": { "auth_ref": [ "r760" ], "lang": { "en-US": { "role": { "documentation": "Percentage of average annual payout, after reinsurance, in the first year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Historical Claims Duration, Year One", "terseLabel": "Year 1 Unaudited" } } }, "localname": "ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearThree": { "auth_ref": [ "r760" ], "lang": { "en-US": { "role": { "documentation": "Percentage of average annual payout, after reinsurance, in the third year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Historical Claims Duration, Year Three", "terseLabel": "Year 3 Unaudited" } } }, "localname": "ShortdurationInsuranceContractsHistoricalClaimsDurationYearThree", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearTwo": { "auth_ref": [ "r760" ], "lang": { "en-US": { "role": { "documentation": "Percentage of average annual payout, after reinsurance, in the second year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Historical Claims Duration, Year Two", "terseLabel": "Year 2 Unaudited" } } }, "localname": "ShortdurationInsuranceContractsHistoricalClaimsDurationYearTwo", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShortdurationInsuranceContractsIncurredButNotReportedIbnrClaimsLiabilityNet": { "auth_ref": [ "r757", "r759" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Undiscounted amount, after reinsurance, of incurred-but-not-reported (IBNR) liabilities plus expected development on reported claims, for claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense.", "label": "Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net", "terseLabel": "Total of Incurred-but-Not Reported Liabilities Plus Expected Development on Reported Claims" } } }, "localname": "ShortdurationInsuranceContractsIncurredButNotReportedIbnrClaimsLiabilityNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShortdurationInsuranceContractsIncurredClaimsAndAllocatedClaimAdjustmentExpenseNet": { "auth_ref": [ "r753" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Undiscounted amount, after reinsurance, of incurred claims and allocated claim adjustment expense used in claims development for short-duration insurance contracts. Excludes unallocated claim adjustment expense.", "label": "Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net", "terseLabel": "Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance" } } }, "localname": "ShortdurationInsuranceContractsIncurredClaimsAndAllocatedClaimAdjustmentExpenseNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet": { "auth_ref": [ "r755", "r756" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense.", "label": "Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net", "terseLabel": "Claims and benefits payable, net of reinsurance" } } }, "localname": "ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetNotSeparatelyPresented": { "auth_ref": [ "r755" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts for accident years not separately presented in claim development information. Excludes unallocated claim adjustment expense.", "label": "Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net, Not Separately Presented", "terseLabel": "Outstanding claims and benefits payable before 2013, net of reinsurance" } } }, "localname": "ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetNotSeparatelyPresented", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense": { "auth_ref": [ "r756" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liability for unallocated claim adjustment expense for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Liability for Unpaid Claims and Claims Adjustment Expense, Accumulated Unallocated Claim Adjustment Expense", "terseLabel": "Unallocated claim adjustment expense" } } }, "localname": "ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShortdurationInsuranceContractsNumberOfReportedClaims": { "auth_ref": [ "r758" ], "lang": { "en-US": { "role": { "documentation": "Number of reported claims for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Number of Reported Claims", "terseLabel": "Cumulative Number of Reported Claims" } } }, "localname": "ShortdurationInsuranceContractsNumberOfReportedClaims", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails" ], "xbrltype": "integerItemType" }, "us-gaap_ShortdurationInsuranceContractsReconciliationOfClaimsDevelopmentToLiabilityLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]", "terseLabel": "Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]" } } }, "localname": "ShortdurationInsuranceContractsReconciliationOfClaimsDevelopmentToLiabilityLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortdurationInsuranceContractsReconciliationOfClaimsDevelopmentToLiabilityTable": { "auth_ref": [ "r756" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about the reconciliation of claims development to the liability for unpaid claims and claim adjustment expense for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table]", "terseLabel": "Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table]" } } }, "localname": "ShortdurationInsuranceContractsReconciliationOfClaimsDevelopmentToLiabilityTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortdurationInsuranceContractsReconciliationOfClaimsDevelopmentToLiabilityTableTextBlock": { "auth_ref": [ "r756" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure for the reconciliation of claims development to the liability for unpaid claims and claim adjustment expense for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table Text Block]", "terseLabel": "Reconciliation of Net Incurred and Paid Claims Development to Liability for Claims and Benefits Payable" } } }, "localname": "ShortdurationInsuranceContractsReconciliationOfClaimsDevelopmentToLiabilityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ShortdurationInsuranceContractsScheduleOfHistoricalClaimsDurationTableTextBlock": { "auth_ref": [ "r760" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of average annual percentage payout of incurred claims by age, after reinsurance, for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Schedule of Historical Claims Duration [Table Text Block]", "terseLabel": "Schedule of Average Annual Payout of Incurred Claims by Age, Net of Reinsurance" } } }, "localname": "ShortdurationInsuranceContractsScheduleOfHistoricalClaimsDurationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_SoftwareAndSoftwareDevelopmentCostsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Purchased software applications and internally developed software for sale, licensing or long-term internal use.", "label": "Software and Software Development Costs [Member]", "terseLabel": "Software and Software Development Costs" } } }, "localname": "SoftwareAndSoftwareDevelopmentCostsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_StatementBusinessSegmentsAxis": { "auth_ref": [ "r222" ], "lang": { "en-US": { "role": { "documentation": "Information by business segments.", "label": "Segments [Axis]", "terseLabel": "Segments [Axis]" } } }, "localname": "StatementBusinessSegmentsAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesReservesReconciliationOfNetIncurredAndPaidClaimsDevelopmentToLiabilityForClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/ReservesReservesScheduleOfAverageAnnualPayoutOfIncurredClaimsByAgeNetOfReinsuranceDetails", "http://www.assurant.com/role/ReservesScheduleOfClaimsDevelopmentDetails", "http://www.assurant.com/role/ReservesTables", "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementClassOfStockAxis": { "auth_ref": [ "r75", "r76", "r77", "r364" ], "lang": { "en-US": { "role": { "documentation": "Information by the different classes of stock of the entity.", "label": "Class of Stock [Axis]", "terseLabel": "Class of Stock [Axis]" } } }, "localname": "StatementClassOfStockAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementEquityComponentsAxis": { "auth_ref": [ "r103", "r364" ], "lang": { "en-US": { "role": { "documentation": "Information by component of equity.", "label": "Equity Components [Axis]", "terseLabel": "Equity Components [Axis]" } } }, "localname": "StatementEquityComponentsAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementGeographicalAxis": { "auth_ref": [ "r47", "r239", "r803" ], "lang": { "en-US": { "role": { "documentation": "Information by geographical components.", "label": "Geographical [Axis]", "terseLabel": "Geographical [Axis]" } } }, "localname": "StatementGeographicalAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationSummaryOfFinancialInformationByGeographicLocationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Statement [Line Items]", "terseLabel": "Statement [Line Items]" } } }, "localname": "StatementLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity", "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementOfCashFlowsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Cash Flows [Abstract]" } } }, "localname": "StatementOfCashFlowsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfFinancialPositionAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Financial Position [Abstract]" } } }, "localname": "StatementOfFinancialPositionAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Comprehensive Income [Abstract]" } } }, "localname": "StatementOfIncomeAndComprehensiveIncomeAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Stockholders' Equity [Abstract]" } } }, "localname": "StatementOfStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementScenarioAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by scenario to be reported. Scenarios distinguish among different kinds of business reporting facts, as for example actual versus budgeted figures.", "label": "Scenario [Axis]", "terseLabel": "Scenario [Axis]" } } }, "localname": "StatementScenarioAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule reflecting a Statement of Income, Statement of Cash Flows, Statement of Financial Position, Statement of Shareholders' Equity and Other Comprehensive Income, or other statement as needed.", "label": "Statement [Table]", "terseLabel": "Statement [Table]" } } }, "localname": "StatementTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows", "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity", "http://www.assurant.com/role/GoodwillGoodwillBySegmentForImpairmentTestDetails", "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsWeightedAverageAssumptionsUsedToDetermineProjectedBenefitObligationDetails", "http://www.assurant.com/role/StockBasedCompensationScheduleOfCompanysShareBasedPaymentAwardEsppValuationAssumptionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatutoryAccountingPracticesByJurisdictionAxis": { "auth_ref": [ "r763", "r765", "r768" ], "lang": { "en-US": { "role": { "documentation": "Information by jurisdiction.", "label": "Jurisdiction [Axis]", "terseLabel": "Jurisdiction [Axis]" } } }, "localname": "StatutoryAccountingPracticesByJurisdictionAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatutoryAccountingPracticesDisclosureTextBlock": { "auth_ref": [ "r706", "r763", "r765", "r768", "r769", "r770" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of how the entity's reporting under GAAP as of the balance sheet date differs from the results based on prescribed and permitted accounting practices of the state or country of domicile in which a relevant statutory filing is made, or differences in results based on the National Association of Insurance Commissioners (NAIC) prescribed practices, or a combination thereof. Describes the accounting practices used and the related monetary effect on statutory surplus, net income, and risk-based capital. If an insurance enterprise's risk-based capital would have triggered a regulatory event had it not used a permitted practice, that fact is disclosed in the financial statements. Permitted statutory accounting practices include practices not prescribed but allowed by the domiciliary state insurance department regulatory authority.", "label": "Statutory Accounting Practices Disclosure [Table Text Block]", "terseLabel": "Summary Of Statutory Net Income And Capital And Surplus" } } }, "localname": "StatutoryAccountingPracticesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StatutoryInformationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_StatutoryAccountingPracticesJurisdictionDomain": { "auth_ref": [ "r764", "r766", "r767" ], "lang": { "en-US": { "role": { "documentation": "The state or country of domicile in which statutory financial statements are required. Insurance holding companies generally are required to file reports in jurisdictions in which subsidiaries with significant underwritings are domiciled.", "label": "Statutory Accounting Practices, Jurisdiction [Domain]", "terseLabel": "Statutory Accounting Practices, Jurisdiction [Domain]" } } }, "localname": "StatutoryAccountingPracticesJurisdictionDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails" ], "xbrltype": "domainItemType" }, "us-gaap_StatutoryAccountingPracticesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Statutory Accounting Practices [Line Items]", "terseLabel": "Statutory Accounting Practices [Line Items]" } } }, "localname": "StatutoryAccountingPracticesLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval": { "auth_ref": [ "r181" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of dividends that can be declared or paid without approval of regulatory agency.", "label": "Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval", "terseLabel": "Maximum dividend paid" } } }, "localname": "StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance": { "auth_ref": [ "r687", "r762" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.", "label": "Statutory Accounting Practices, Statutory Capital and Surplus, Balance", "terseLabel": "Total statutory capital and surplus" } } }, "localname": "StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount": { "auth_ref": [ "r687" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators.", "label": "Statutory Accounting Practices, Statutory Net Income Amount", "terseLabel": "Total statutory net income" } } }, "localname": "StatutoryAccountingPracticesStatutoryNetIncomeAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StatutoryAccountingPracticesTable": { "auth_ref": [ "r706", "r763", "r765", "r768", "r769", "r770" ], "lang": { "en-US": { "role": { "documentation": "Detail by state, country, or other jurisdiction of domicile in which financial statements are filed reflecting statutory capital and surplus, net income and the differences between financial reports which are in conformity with generally accepted accounting principles and the statutory financial statements which also use state permitted or prescribed accounting practices.", "label": "Statutory Accounting Practices [Table]", "terseLabel": "Statutory Accounting Practices [Table]" } } }, "localname": "StatutoryAccountingPracticesTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StatutoryInformationNarrativeDetails", "http://www.assurant.com/role/StatutoryInformationSummaryOfStatutoryNetIncomeAndCapitalAndSurplusDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans": { "auth_ref": [ "r76", "r77", "r364", "r371" ], "lang": { "en-US": { "role": { "documentation": "Number of shares issued during the period as a result of an employee stock purchase plan.", "label": "Stock Issued During Period, Shares, Employee Stock Purchase Plans", "terseLabel": "Issuance related to ESPP" } } }, "localname": "StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures": { "auth_ref": [ "r76", "r77", "r364", "r371" ], "lang": { "en-US": { "role": { "documentation": "Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.", "label": "Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures", "verboseLabel": "Vested restricted stock and restricted stock units, net" } } }, "localname": "StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation": { "auth_ref": [ "r76", "r77", "r364", "r371" ], "lang": { "en-US": { "role": { "documentation": "Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.", "label": "Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures", "terseLabel": "Issuance related to performance share units" } } }, "localname": "StockIssuedDuringPeriodSharesShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation": { "auth_ref": [ "r76", "r77", "r371", "r431", "r442" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.", "label": "Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures", "terseLabel": "Stock plan exercises" } } }, "localname": "StockIssuedDuringPeriodValueShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount remaining of a stock repurchase plan authorized.", "label": "Stock Repurchase Program, Remaining Authorized Repurchase Amount", "terseLabel": "Value remaining under total repurchase authorization" } } }, "localname": "StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockRepurchaseNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockRepurchasedDuringPeriodValue": { "auth_ref": [ "r76", "r77", "r364", "r371" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.", "label": "Stock Repurchased During Period, Value", "terseLabel": "Shares repurchased, value" } } }, "localname": "StockRepurchasedDuringPeriodValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockRepurchaseNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquity": { "auth_ref": [ "r77", "r81", "r82", "r250" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.", "label": "Stockholders' Equity Attributable to Parent", "totalLabel": "Total Assurant, Inc. stockholders\u2019 equity" } } }, "localname": "StockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Stockholders' Equity Attributable to Parent [Abstract]", "terseLabel": "Stockholders\u2019 equity" } } }, "localname": "StockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest": { "auth_ref": [ "r524", "r525", "r544" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.", "label": "Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance", "totalLabel": "Total equity" } } }, "localname": "StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquityNoteDisclosureTextBlock": { "auth_ref": [ "r38", "r77", "r81", "r82", "r177", "r178", "r251", "r363", "r364", "r365", "r366", "r367", "r368", "r371", "r373", "r375" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.", "label": "Stockholders' Equity Note Disclosure [Text Block]", "terseLabel": "Common Stock" } } }, "localname": "StockholdersEquityNoteDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStock" ], "xbrltype": "textBlockItemType" }, "us-gaap_SubsegmentsAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by business subsegments.", "label": "Subsegments [Axis]", "terseLabel": "Subsegments [Axis]" } } }, "localname": "SubsegmentsAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubsegmentsDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Divisions of a component of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity.", "label": "Subsegments [Domain]", "terseLabel": "Subsegments [Domain]" } } }, "localname": "SubsegmentsDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SegmentInformationSummaryOfNetEarnedPremiumsBySegmentAndProductDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SubsequentEventLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.", "label": "Subsequent Event [Line Items]", "terseLabel": "Subsequent Event [Line Items]" } } }, "localname": "SubsequentEventLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Identifies event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event [Member]", "terseLabel": "Subsequent Event" } } }, "localname": "SubsequentEventMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SubsequentEventTable": { "auth_ref": [ "r608" ], "lang": { "en-US": { "role": { "documentation": "Discloses pertinent information about one or more significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued.", "label": "Subsequent Event [Table]", "terseLabel": "Subsequent Event [Table]" } } }, "localname": "SubsequentEventTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SubsequentEventsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventTypeAxis": { "auth_ref": [ "r608" ], "lang": { "en-US": { "role": { "documentation": "Information by event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event Type [Axis]", "terseLabel": "Subsequent Event Type [Axis]" } } }, "localname": "SubsequentEventTypeAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventTypeDomain": { "auth_ref": [ "r608" ], "lang": { "en-US": { "role": { "documentation": "Event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event Type [Domain]", "terseLabel": "Subsequent Event Type [Domain]" } } }, "localname": "SubsequentEventTypeDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DebtLoanFacilitiesDetails", "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SubsequentEventsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Subsequent Events [Abstract]" } } }, "localname": "SubsequentEventsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventsTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.", "label": "Subsequent Events [Text Block]", "terseLabel": "Subsequent Events" } } }, "localname": "SubsequentEventsTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SubsequentEventsNotes" ], "xbrltype": "textBlockItemType" }, "us-gaap_SummaryOfIncomeTaxContingenciesTextBlock": { "auth_ref": [ "r470", "r477", "r479" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.", "label": "Summary of Income Tax Contingencies [Table Text Block]", "terseLabel": "Summary Of Unrecognized Tax Benefits" } } }, "localname": "SummaryOfIncomeTaxContingenciesTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Summary of Investments, Other than Investments in Related Parties [Abstract]" } } }, "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount": { "auth_ref": [ "r799" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This element represents the carrying (reported) amount of the entity's investments as of the balance sheet date. This amount may represent the individual investment's or group of similar investments' original cost, fair value, or such other amount at which the investment is shown in the entity's balance sheet.", "label": "Summary of Investments, Other than Investments in Related Parties, Carrying Amount", "terseLabel": "Amount at which shown in balance sheet" } } }, "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost": { "auth_ref": [ "r799" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the original cost of the entity's investments including investments in equity securities and, as to fixed maturities, original cost reduced by repayments and adjusted for amortization of premiums or accrual of discounts.", "label": "Summary of Investments, Other than Investments in Related Parties, Cost", "terseLabel": "Cost or Amortized Cost" } } }, "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue": { "auth_ref": [ "r799" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the reported amount of the entity's investments measured at fair value. Fair value is the price that would be received to sell an investment in an orderly transaction between market participants at the balance sheet [measurement] date.", "label": "Summary of Investments, Other than Investments in Related Parties, Fair Value", "terseLabel": "Fair Value" } } }, "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesReportableDataLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]", "terseLabel": "Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]" } } }, "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesReportableDataLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTable": { "auth_ref": [ "r799" ], "lang": { "en-US": { "role": { "documentation": "Summarization of information required and determined to be disclosed concerning investments held as of the most recent audited balance sheet. At a minimum, such summary is by three major categories of investments including: (1) fixed maturities primarily consisting of bonds, including convertibles and bonds with warrants, and redeemable preferred stocks, (2) equity securities primarily consisting of common stocks and nonredeemable preferred stocks, and (3) other investments including mortgage loans on real estate, real estate held for investment, real estate acquired in satisfaction of debt, policy loans, other long-term investments, and short-term investments not otherwise categorized. The information provided with respect to each item within each category includes: (A) the original cost of equity securities and, as to fixed maturity securities, original cost reduced by repayments and adjusted for amortization of premiums or accrual of discounts, (B) fair value as of the reporting date, and (C) the amount at which the item within each category is shown in the statement of financial position; with respect to (C), if the amount at which shown in the statement of financial position is different from the items original [amortized] cost or fair value, an explanation of the difference may be included herein.", "label": "Summary of Investments, Other than Investments in Related Parties [Table]", "terseLabel": "Summary of Investments, Other than Investments in Related Parties [Table]" } } }, "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTextBlock": { "auth_ref": [ "r799" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the schedule applicable to insurance companies summarizing investments held as of the most recent audited balance sheet. At a minimum, such summary is by three major categories of investments including: (1) fixed maturities primarily consisting of bonds, including convertibles and bonds with warrants, and redeemable preferred stocks, (2) equity securities primarily consisting of common stocks and nonredeemable preferred stocks, and (3) other investments including mortgage loans on real estate, real estate held for investment, real estate acquired in satisfaction of debt, policy loans, other long-term investments, and short-term investments not otherwise categorized. The information provided with respect to each item within each category includes: (A) the original cost of equity securities and, as to fixed maturity securities, original cost reduced by repayments and adjusted for amortization of premiums or accrual of discounts, (B) fair value as of the reporting date, and (C) the amount at which the item within each category is shown in the statement of financial position; with respect to (C), if the amount at which shown in the statement of financial position is different from the items original [amortized] cost or fair value, an explanation of the difference may be included herein.", "label": "Summary of Investments, Other than Investments in Related Parties [Text Block]", "terseLabel": "Summary Of Investments Other-Than-Investments In Related Parties" } } }, "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedParties" ], "xbrltype": "textBlockItemType" }, "us-gaap_SummaryOfOperatingLossCarryforwardsTextBlock": { "auth_ref": [ "r486" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.", "label": "Summary of Operating Loss Carryforwards [Table Text Block]", "terseLabel": "Summary Of Net Operating Loss Carryforwards" } } }, "localname": "SummaryOfOperatingLossCarryforwardsTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_SupplementalCashFlowInformationAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Supplemental Cash Flow Information [Abstract]", "terseLabel": "Supplemental information:" } } }, "localname": "SupplementalCashFlowInformationAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense": { "auth_ref": [ "r732", "r749" ], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": 1.0, "parentTag": "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after effects of reinsurance, of expense for claims incurred in the current reporting period and related claims settlement costs.", "label": "Current Year Claims and Claims Adjustment Expense", "terseLabel": "Incurred losses and loss adjustment expenses, current year" } } }, "localname": "SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersInterestRateAtWhichDiscountComputed": { "auth_ref": [ "r732" ], "lang": { "en-US": { "role": { "documentation": "The rate at which the discount was computed for each business segment reported.", "label": "Supplemental Information for Property, Casualty Insurance Underwriters, Interest Rate at which Discount Computed", "terseLabel": "Discount rates" } } }, "localname": "SupplementalInformationForPropertyCasualtyInsuranceUnderwritersInterestRateAtWhichDiscountComputed", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense": { "auth_ref": [ "r732", "r749" ], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": 3.0, "parentTag": "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred in prior reporting periods and related claims settlement costs.", "label": "Prior Year Claims and Claims Adjustment Expense", "terseLabel": "Incurred losses and loss adjustment expenses, prior year(s)" } } }, "localname": "SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Supplemental Schedule of Reinsurance Premiums for Insurance Companies [Abstract]" } } }, "localname": "SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlock": { "auth_ref": [ "r658", "r728" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the supplemental schedule of reinsurance information. Reinsurance schedule includes, but is not limited to, the type of insurance, gross amount of premiums, premiums ceded to other entities, premiums assumed from other entities, net amount of premium revenue, and the percentage of the premiums assumed to net premium revenue.", "label": "Supplemental Schedule of Reinsurance Premiums for Insurance Companies [Text Block]", "terseLabel": "Schedule IV - Reinsurance" } } }, "localname": "SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIvReinsurance" ], "xbrltype": "textBlockItemType" }, "us-gaap_SupplementaryInsuranceInformationAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Supplementary Insurance Information [Abstract]" } } }, "localname": "SupplementaryInsuranceInformationAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts": { "auth_ref": [ "r726" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization of deferred policy acquisition costs recognized.", "label": "Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Costs", "verboseLabel": "Amortization of deferred acquisition costs" } } }, "localname": "SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense": { "auth_ref": [ "r726" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of insurance benefits, claims, losses and settlement expenses incurred.", "label": "Supplementary Insurance Information, Benefits, Claims, Losses and Settlement Expense", "verboseLabel": "Benefits claims, losses and settlement expenses" } } }, "localname": "SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementaryInsuranceInformationBySegmentLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Supplementary Insurance Information, by Segment [Line Items]", "terseLabel": "Supplementary Insurance Information, by Segment [Line Items]" } } }, "localname": "SupplementaryInsuranceInformationBySegmentLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SupplementaryInsuranceInformationBySegmentTable": { "auth_ref": [ "r657", "r726" ], "lang": { "en-US": { "role": { "documentation": "Supplementary insurance information required to be disclosed giving segment detail in support of various balance sheet and income statement captions. The balance sheet information generally is presented as of the date of each audited balance sheet filed, and the income statement information generally is presented for each period for which an audited income statement is required to be filed. Supplementary insurance information table includes segment name; deferred policy acquisition costs; future policy benefits, losses, claims and loss expenses; unearned premiums; other policy claims and benefits payable; premium revenue; net investment income; benefits, claims, losses and settlement expenses; amortization of deferred policy acquisition costs; other operating expenses; and premiums written.", "label": "Supplementary Insurance Information, by Segment [Table]", "terseLabel": "Supplementary Insurance Information, by Segment [Table]" } } }, "localname": "SupplementaryInsuranceInformationBySegmentTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts": { "auth_ref": [ "r726" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Net amount of deferred policy acquisition costs capitalized on contracts remaining in force on the balance sheet date.", "label": "Supplementary Insurance Information, Deferred Policy Acquisition Costs", "verboseLabel": "Deferred acquisition costs" } } }, "localname": "SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock": { "auth_ref": [ "r657", "r726" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for required supplementary insurance information giving segment detail in support of various balance sheet and income statement captions. The balance sheet information generally is presented as of the date of each audited balance sheet filed, and the income statement information generally is presented for each period for which an audited income statement is required to be filed. Supplementary insurance information table includes segment name; deferred policy acquisition costs; future policy benefits, losses, claims and loss expenses; unearned premiums; other policy claims and benefits payable; premium revenue; net investment income; benefits, claims, losses and settlement expenses; amortization of deferred policy acquisition costs; other operating expenses; and premiums written.", "label": "Supplementary Insurance Information, for Insurance Companies Disclosure [Text Block]", "verboseLabel": "Supplementary Insurance Information" } } }, "localname": "SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformation" ], "xbrltype": "textBlockItemType" }, "us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves": { "auth_ref": [ "r726" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of reserves for future policy claims payable and loss expenses to be incurred.", "label": "Supplementary Insurance Information, Liability for Future Policy Benefits, Losses, Claims and Loss Expense Reserves", "verboseLabel": "Future policy benefits and expenses" } } }, "localname": "SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome": { "auth_ref": [ "r726" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of net investment income earned.", "label": "Supplementary Insurance Information, Net Investment Income", "verboseLabel": "Net investment income" } } }, "localname": "SupplementaryInsuranceInformationNetInvestmentIncome", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense": { "auth_ref": [ "r726" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of other operating expense incurred.", "label": "Supplementary Insurance Information, Other Operating Expense", "verboseLabel": "Other operating expenses" } } }, "localname": "SupplementaryInsuranceInformationOtherOperatingExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementaryInsuranceInformationOtherPolicyClaimsAndBenefitsPayable": { "auth_ref": [ "r726" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of claims and benefits payable classified as other.", "label": "Supplementary Insurance Information, Other Policy Claims and Benefits Payable", "verboseLabel": "Claims and benefits payable" } } }, "localname": "SupplementaryInsuranceInformationOtherPolicyClaimsAndBenefitsPayable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementaryInsuranceInformationPremiumRevenue": { "auth_ref": [ "r726" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of premium revenue earned.", "label": "Supplementary Insurance Information, Premium Revenue", "verboseLabel": "Premium revenue" } } }, "localname": "SupplementaryInsuranceInformationPremiumRevenue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementaryInsuranceInformationPremiumsWritten": { "auth_ref": [ "r726" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of actual written premiums, including, as applicable, premiums from reinsurance assumed and net of premiums on reinsurance ceded.", "label": "Supplementary Insurance Information, Premiums Written", "verboseLabel": "Property and Casualty premiums written" } } }, "localname": "SupplementaryInsuranceInformationPremiumsWritten", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementaryInsuranceInformationUnearnedPremiums": { "auth_ref": [ "r726" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of premiums not yet earned.", "label": "Supplementary Insurance Information, Unearned Premiums", "terseLabel": "Unearned premiums" } } }, "localname": "SupplementaryInsuranceInformationUnearnedPremiums", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TaxesPayableCurrentAndNoncurrent": { "auth_ref": [ "r70", "r619", "r683" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes.", "label": "Taxes Payable", "terseLabel": "Income tax payable" } } }, "localname": "TaxesPayableCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TechnologyBasedIntangibleAssetsMember": { "auth_ref": [ "r511" ], "lang": { "en-US": { "role": { "documentation": "Technology-based intangible assets, including, but not limited to, patented technology, unpatented technology, and developed technology rights.", "label": "Technology-Based Intangible Assets [Member]", "terseLabel": "Technology based intangibles" } } }, "localname": "TechnologyBasedIntangibleAssetsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TitleOfIndividualAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by title of individual or nature of relationship to individual or group of individuals.", "label": "Title of Individual [Axis]", "terseLabel": "Title of Individual [Axis]" } } }, "localname": "TitleOfIndividualAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_TitleOfIndividualWithRelationshipToEntityDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Title of individual, or nature of relationship to individual or group of individuals.", "label": "Relationship to Entity [Domain]", "terseLabel": "Relationship to Entity [Domain]" } } }, "localname": "TitleOfIndividualWithRelationshipToEntityDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TradeNamesMember": { "auth_ref": [ "r512" ], "lang": { "en-US": { "role": { "documentation": "Rights acquired through registration of a business name to gain or protect exclusive use thereof.", "label": "Trade Names [Member]", "terseLabel": "Trade Names" } } }, "localname": "TradeNamesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails", "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutOtherIntangibleAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TransfersOfFinancialAssetsAccountedForAsSaleInitialFairValueOfAssetsObtainedAsProceeds": { "auth_ref": [ "r609" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Represents the initial fair value recorded for assets received on transfer of financial assets in a securitization, asset-backed financing arrangement, or a similar transfer which transaction is recognized as a sale of the transferred financial assets.", "label": "Transfers of Financial Assets Accounted for as Sale, Initial Fair Value of Assets Obtained as Proceeds", "terseLabel": "Certain commercial mortgage loans transferred" } } }, "localname": "TransfersOfFinancialAssetsAccountedForAsSaleInitialFairValueOfAssetsObtainedAsProceeds", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TreasuryStockMember": { "auth_ref": [ "r102", "r374" ], "lang": { "en-US": { "role": { "documentation": "Shares of an entity that have been repurchased by the entity. This stock has no voting rights and receives no dividends. Note that treasury stock may be recorded at its total cost or separately as par (or stated) value and additional paid in capital. Classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer. Classified within temporary equity if redemption is outside the control of the issuer.", "label": "Treasury Stock [Member]", "terseLabel": "Treasury Stock" } } }, "localname": "TreasuryStockMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "domainItemType" }, "us-gaap_TreasuryStockShares": { "auth_ref": [ "r102", "r374" ], "lang": { "en-US": { "role": { "documentation": "Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.", "label": "Treasury Stock, Shares", "terseLabel": "Treasury stock, at cost (in shares)" } } }, "localname": "TreasuryStockShares", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyParentheticalDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_TreasuryStockSharesAcquired": { "auth_ref": [ "r77", "r364", "r371" ], "lang": { "en-US": { "role": { "documentation": "Number of shares that have been repurchased during the period and are being held in treasury.", "label": "Treasury Stock, Shares, Acquired", "negatedLabel": "Shares repurchased", "terseLabel": "Number of shares repurchased" } } }, "localname": "TreasuryStockSharesAcquired", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/CommonStockDetails", "http://www.assurant.com/role/StockRepurchaseNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_TreasuryStockTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock.", "label": "Treasury Stock [Text Block]", "terseLabel": "Stock Repurchase" } } }, "localname": "TreasuryStockTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockRepurchase" ], "xbrltype": "textBlockItemType" }, "us-gaap_TreasuryStockValue": { "auth_ref": [ "r102", "r374", "r376" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_StockholdersEquity", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.", "label": "Treasury Stock, Value", "negatedLabel": "Treasury stock, at cost; 97,974,792 and 94,041,583 shares at December 31, 2017 and December 31, 2016, respectively", "negatedTerseLabel": "Treasury stock, at cost; 97,974,792 and 94,041,583 shares at December 31, 2017 and 2016, respectively" } } }, "localname": "TreasuryStockValue", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TreasuryStockValueAcquiredCostMethod": { "auth_ref": [ "r364", "r371", "r374" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.", "label": "Treasury Stock, Value, Acquired, Cost Method", "negatedLabel": "Acquisition of common stock" } } }, "localname": "TreasuryStockValueAcquiredCostMethod", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfChangesInStockholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_TypeOfAdoptionMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Adoption and early adoption of sources of change to generally accepted accounting principles (GAAP) in the United States. The FASB released the FASB Accounting Standards Codification as the authoritative source of literature effective for interim and annual periods ending after September 15, 2009. As part of the Codification process, the FASB issues Accounting Standards Updates to amend the Codification but otherwise the Accounting Standards Updates are not authoritative in their own right. All previous accounting standards (such as FASB Statements of Financial Accounting Standards, FASB Interpretations, FASB Staff Positions, Emerging Issues Task Force Consensuses, other pronouncements of the FASB or other designated bodies, or other forms of GAAP are considered accounting pronouncements) were superseded upon the adoption of the Codification. For an interim period, references to the superseded standards are included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.", "label": "Type of Adoption [Domain]", "terseLabel": "Type of Adoption [Domain]" } } }, "localname": "TypeOfAdoptionMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TypeOfRestructuringDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Identification of the types of restructuring costs.", "label": "Type of Restructuring [Domain]", "terseLabel": "Type of Restructuring [Domain]" } } }, "localname": "TypeOfRestructuringDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsAndExitActivitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_USGovernmentAgenciesDebtSecuritiesMember": { "auth_ref": [ "r635" ], "lang": { "en-US": { "role": { "documentation": "Debentures, notes, and other debt securities issued by US government agencies, for example, but not limited to, Government National Mortgage Association (GNMA or Ginnie Mae). Excludes US treasury securities and debt issued by government-sponsored Enterprises (GSEs), for example, but is not limited to, Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB).", "label": "US Government Agencies Debt Securities [Member]", "terseLabel": "U.S. government and government agencies and authorities" } } }, "localname": "USGovernmentAgenciesDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_USStatesAndPoliticalSubdivisionsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Bonds or similar securities issued by state, city, or local US governments or the agencies operated by state, city, or local governments. Debt securities issued by state governments may include bond issuances of US state authorities including, for example, but not limited to, housing authorities, dormitory authorities, and general obligations while debt securities issued by political subdivisions of US states would include, for example, debt issuances by county, borough, city, or municipal governments.", "label": "US States and Political Subdivisions Debt Securities [Member]", "terseLabel": "State, municipalities and political subdivisions", "verboseLabel": "States, municipalities and political subdivisions" } } }, "localname": "USStatesAndPoliticalSubdivisionsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_USTreasuryAndGovernmentMember": { "auth_ref": [ "r635" ], "lang": { "en-US": { "role": { "documentation": "This category includes investments in debt securities issued by the United States Department of the Treasury, US Government Agencies and US Government-sponsored Enterprises. Such securities may include treasury bills (short-term maturities - one year or less), treasury notes (intermediate term maturities - two to ten years), and treasury bonds (long-term maturities - ten to thirty years), debt securities issued by the Government National Mortgage Association (Ginnie Mae) and debt securities issued by the Federal National Mortgage Association (Fannie Mae) or the Federal Home Loan Mortgage Corporation (Freddie Mac).", "label": "US Treasury and Government [Member]", "terseLabel": "U.S. government and government agencies and authorities" } } }, "localname": "USTreasuryAndGovernmentMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UnderlyingAssetClassAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by underlying asset class.", "label": "Underlying Asset Class [Axis]", "terseLabel": "Underlying Asset Class [Axis]" } } }, "localname": "UnderlyingAssetClassAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_UnderlyingAssetClassDomain": { "auth_ref": [ "r553" ], "lang": { "en-US": { "role": { "documentation": "Major types of referenced/underlying asset classes (for example, corporate debt, sovereign debt, and structured finance).", "label": "Underlying Asset Class [Domain]", "terseLabel": "Underlying Asset Class [Domain]" } } }, "localname": "UnderlyingAssetClassDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresChangeInBalanceSheetCarryingValueAssociatedWithLevel3FinancialAssetsCarriedAtFairValueDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesInUnrealizedLossPositionByContractualMaturityDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UndistributedEarnings": { "auth_ref": [ "r199", "r200", "r201", "r202", "r203" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The earnings that is allocated to common stock and participating securities to the extent that each security may share in earnings as if all of the earnings for the period had been distributed.", "label": "Undistributed Earnings, Basic", "terseLabel": "Undistributed earnings" } } }, "localname": "UndistributedEarnings", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnearnedPremiums": { "auth_ref": [ "r681", "r723" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Carrying amount of premiums written on insurance contracts that have not been earned as of the balance sheet date.", "label": "Unearned Premiums", "terseLabel": "Unearned premiums" } } }, "localname": "UnearnedPremiums", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_UniversalLifeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Life insurance contract under which premiums are generally flexible, the level of death benefits may be adjusted, and mortality expense, and other charges may vary.", "label": "Universal Life [Member]", "terseLabel": "Universal Life" } } }, "localname": "UniversalLifeMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UnrecognizedTaxBenefits": { "auth_ref": [ "r44", "r472" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of unrecognized tax benefits.", "label": "Unrecognized Tax Benefits", "negatedPeriodEndLabel": "Balance at end of year", "negatedPeriodStartLabel": "Balance at beginning of year" } } }, "localname": "UnrecognizedTaxBenefits", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfUnrecognizedTaxBenefitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions": { "auth_ref": [ "r474" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.", "label": "Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions", "terseLabel": "Reductions based on tax positions related to the current year" } } }, "localname": "UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfUnrecognizedTaxBenefitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions": { "auth_ref": [ "r473" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.", "label": "Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions", "terseLabel": "Reductions for tax positions of prior years" } } }, "localname": "UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfUnrecognizedTaxBenefitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued": { "auth_ref": [ "r469" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.", "label": "Unrecognized Tax Benefits, Income Tax Penalties Accrued", "terseLabel": "Penalties accrued" } } }, "localname": "UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions": { "auth_ref": [ "r474" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.", "label": "Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions", "negatedLabel": "Additions based on tax positions related to the current year" } } }, "localname": "UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfUnrecognizedTaxBenefitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions": { "auth_ref": [ "r473" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.", "label": "Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions", "negatedLabel": "Additions for tax positions of prior years" } } }, "localname": "UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfUnrecognizedTaxBenefitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued": { "auth_ref": [ "r469" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of interest expense accrued for an underpayment of income taxes.", "label": "Unrecognized Tax Benefits, Interest on Income Taxes Accrued", "terseLabel": "Interest accrued" } } }, "localname": "UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense": { "auth_ref": [ "r469" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of interest expense for an underpayment of income taxes.", "label": "Unrecognized Tax Benefits, Interest on Income Taxes Expense", "terseLabel": "Recognized interest expense" } } }, "localname": "UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations": { "auth_ref": [ "r475" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.", "label": "Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations", "terseLabel": "Lapses" } } }, "localname": "UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesSummaryOfUnrecognizedTaxBenefitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate": { "auth_ref": [ "r476" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.", "label": "Unrecognized Tax Benefits that Would Impact Effective Tax Rate", "terseLabel": "Total unrecognized tax benefit" } } }, "localname": "UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnsecuredDebt": { "auth_ref": [ "r71", "r622", "r684" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 9.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).", "label": "Unsecured Debt", "terseLabel": "Debt", "verboseLabel": "Debt" } } }, "localname": "UnsecuredDebt", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ScheduleIiCondensedBalanceSheetParentOnlyDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UseOfEstimates": { "auth_ref": [ "r218", "r219", "r220" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.", "label": "Use of Estimates, Policy [Policy Text Block]", "verboseLabel": "Use Of Estimates" } } }, "localname": "UseOfEstimates", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ValuationAllowanceOperatingLossCarryforwardsMember": { "auth_ref": [ "r190", "r484" ], "lang": { "en-US": { "role": { "documentation": "The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.", "label": "Valuation Allowance, Operating Loss Carryforwards [Member]", "terseLabel": "Valuation allowance for foreign NOL deferred tax carryforward" } } }, "localname": "ValuationAllowanceOperatingLossCarryforwardsMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ValuationAllowancesAndReservesBalance": { "auth_ref": [ "r189" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.", "label": "Valuation Allowances and Reserves, Balance", "periodEndLabel": "Balance at End of Year", "periodStartLabel": "Balance at Beginning of Year" } } }, "localname": "ValuationAllowancesAndReservesBalance", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense": { "auth_ref": [ "r189" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses.", "label": "Valuation Allowances and Reserves, Additions for Charges to Cost and Expense", "terseLabel": "Charged to Costs and Expenses" } } }, "localname": "ValuationAllowancesAndReservesChargedToCostAndExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts": { "auth_ref": [ "r189" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to accounts other than costs and expenses.", "label": "Valuation Allowances and Reserves, Additions for Charges to Other Accounts", "terseLabel": "Charged to Other Accounts" } } }, "localname": "ValuationAllowancesAndReservesChargedToOtherAccounts", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ValuationAllowancesAndReservesDeductions": { "auth_ref": [ "r189" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.", "label": "Valuation Allowances and Reserves, Deductions", "terseLabel": "Deductions" } } }, "localname": "ValuationAllowancesAndReservesDeductions", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ValuationAllowancesAndReservesDomain": { "auth_ref": [ "r189" ], "lang": { "en-US": { "role": { "documentation": "The entity's valuation, qualifying and reserve accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.", "label": "Valuation Allowances and Reserves [Domain]", "terseLabel": "Valuation Allowances and Reserves [Domain]" } } }, "localname": "ValuationAllowancesAndReservesDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ValuationAllowancesAndReservesTypeAxis": { "auth_ref": [ "r189" ], "lang": { "en-US": { "role": { "documentation": "Information by type of valuation and reserve accounts.", "label": "Valuation Allowances and Reserves Type [Axis]", "terseLabel": "Valuation Allowances and Reserves Type [Axis]" } } }, "localname": "ValuationAllowancesAndReservesTypeAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ValuationAndQualifyingAccountsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Valuation and Qualifying Accounts [Abstract]" } } }, "localname": "ValuationAndQualifyingAccountsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "xbrltype": "stringItemType" }, "us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Valuation and Qualifying Accounts Disclosure [Line Items]", "terseLabel": "Valuation and Qualifying Accounts Disclosure [Line Items]" } } }, "localname": "ValuationAndQualifyingAccountsDisclosureLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ValuationAndQualifyingAccountsDisclosureTable": { "auth_ref": [ "r189" ], "lang": { "en-US": { "role": { "documentation": "A schedule of allowance and reserve accounts including their beginning and ending balances, as well as a reconciliation by type of activity during the period. Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements.", "label": "Valuation and Qualifying Accounts Disclosure [Table]", "terseLabel": "Valuation and Qualifying Accounts Disclosure [Table]" } } }, "localname": "ValuationAndQualifyingAccountsDisclosureTable", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ScheduleVValuationAndQualifyingAccountsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ValuationTechniqueAxis": { "auth_ref": [ "r561" ], "lang": { "en-US": { "role": { "documentation": "Information by valuation technique.", "label": "Valuation Technique [Axis]", "terseLabel": "Valuation Technique [Axis]" } } }, "localname": "ValuationTechniqueAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ValuationTechniqueDomain": { "auth_ref": [ "r561" ], "lang": { "en-US": { "role": { "documentation": "Valuation techniques used by the entity.", "label": "Valuation Technique [Domain]", "terseLabel": "Valuation Technique" } } }, "localname": "ValuationTechniqueDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ValueOfBusinessAcquiredVOBA": { "auth_ref": [ "r670", "r700" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 10.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The remaining unamortized carrying amount as of the balance sheet date of expected future earnings from insurance contracts acquired (also known as present value of future profits).", "label": "Value of Business Acquired (VOBA)", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance", "terseLabel": "Value of business acquired" } } }, "localname": "ValueOfBusinessAcquiredVOBA", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/VobaAndOtherIntangibleAssetsInformationAboutVobaDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis": { "auth_ref": [ "r533", "r536", "r542" ], "lang": { "en-US": { "role": { "documentation": "Information by category of Variable Interest Entity (VIE).", "label": "Variable Interest Entities [Axis]", "terseLabel": "Variable Interest Entities [Axis]" } } }, "localname": "VariableInterestEntitiesByClassificationOfEntityAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityExpense": { "auth_ref": [ "r541" ], "calculation": { "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails": { "order": 3.0, "parentTag": "us-gaap_NetInvestmentIncome", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of expense between the reporting entity and the Variable Interest Entity (VIE).", "label": "Variable Interest Entity, Measure of Activity, Expense", "negatedLabel": "Expenses from consolidated investment entities" } } }, "localname": "VariableInterestEntityActivityBetweenVIEAndEntityExpense", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss": { "auth_ref": [ "r541" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of income (loss) from operations derived by the reporting entity during the period from the Variable Interest Entity (VIE).", "label": "Variable Interest Entity, Measure of Activity, Operating Income or Loss", "terseLabel": "Net revenues and expenses" } } }, "localname": "VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityPurchases": { "auth_ref": [ "r541" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of purchases between the reporting entity and the Variable Interest Entity (VIE).", "label": "Variable Interest Entity, Measure of Activity, Purchases", "terseLabel": "Purchases" } } }, "localname": "VariableInterestEntityActivityBetweenVIEAndEntityPurchases", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityRevenues": { "auth_ref": [ "r541" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of income between the reporting entity and the Variable Interest Entity (VIE).", "label": "Variable Interest Entity, Measure of Activity, Revenues", "terseLabel": "Total income included in earnings", "verboseLabel": "Revenues from consolidated investment entities" } } }, "localname": "VariableInterestEntityActivityBetweenVIEAndEntityRevenues", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets": { "auth_ref": [ "r532" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 14.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.", "label": "Variable Interest Entity, Consolidated, Carrying Amount, Assets", "terseLabel": "Assets of consolidated investment entities" } } }, "localname": "VariableInterestEntityConsolidatedCarryingAmountAssets", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities": { "auth_ref": [ "r532" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 11.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.", "label": "Variable Interest Entity, Consolidated, Carrying Amount, Liabilities", "terseLabel": "Liabilities of consolidated investment entities" } } }, "localname": "VariableInterestEntityConsolidatedCarryingAmountLiabilities", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntityDisclosureTextBlock": { "auth_ref": [ "r533", "r536", "r539" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for a variable interest entity (VIE), including but not limited to, judgments and assumptions in determining whether to consolidate and in identifying the primary beneficiary, gain (loss) recognized on the initial consolidation of the VIE, terms of arrangements, amounts and classification of the VIE's assets and liabilities, and the entity's maximum exposure to loss.", "label": "Variable Interest Entity Disclosure [Text Block]", "terseLabel": "Variable Interest Entities" } } }, "localname": "VariableInterestEntityDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntities" ], "xbrltype": "textBlockItemType" }, "us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount": { "auth_ref": [ "r535", "r540" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).", "label": "Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount", "terseLabel": "Maximum exposure to loss related to VIEs" } } }, "localname": "VariableInterestEntityEntityMaximumLossExposureAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount": { "auth_ref": [ "r538" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support.", "label": "Variable Interest Entity, Financial or Other Support, Amount", "terseLabel": "Special purpose entities capitalized amount" } } }, "localname": "VariableInterestEntityFinancialOrOtherSupportAmount", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntityLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Variable Interest Entity [Line Items]", "terseLabel": "Variable Interest Entity [Line Items]" } } }, "localname": "VariableInterestEntityLineItems", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_VariableInterestEntityPrimaryBeneficiaryMember": { "auth_ref": [ "r533" ], "lang": { "en-US": { "role": { "documentation": "Variable Interest Entities (VIE) in which the entity has a controlling financial interest (as defined) and of which it is therefore the primary beneficiary. A controlling financial interest is determined based on both: (a) the entity's power to direct activities of the VIE that most significantly impact the VIE's economic performance and (b) the entity's obligation to absorb losses of the VIE that could potentially be significant to the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. VIEs of which the entity is the primary beneficiary are included in the consolidated financial statements of the entity.", "label": "Variable Interest Entity, Primary Beneficiary [Member]", "terseLabel": "Revenues (expenses) from consolidated investment entities", "verboseLabel": "Consolidated investment entities" } } }, "localname": "VariableInterestEntityPrimaryBeneficiaryMember", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsCategoriesOfNetInvestmentIncomeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_VestingAxis": { "auth_ref": [ "r453" ], "lang": { "en-US": { "role": { "documentation": "Information by vesting schedule for share-based compensation.", "label": "Vesting [Axis]", "terseLabel": "Vesting [Axis]" } } }, "localname": "VestingAxis", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_VestingDomain": { "auth_ref": [ "r453" ], "lang": { "en-US": { "role": { "documentation": "Vesting schedule for share-based compensation.", "label": "Vesting [Domain]", "terseLabel": "Vesting [Domain]" } } }, "localname": "VestingDomain", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment": { "auth_ref": [ "r204" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 2.0, "parentTag": "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.", "label": "Weighted Average Number Diluted Shares Outstanding Adjustment", "terseLabel": "Plus: Dilutive securities (in shares)" } } }, "localname": "WeightedAverageNumberDilutedSharesOutstandingAdjustment", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": { "auth_ref": [ "r195", "r204" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "lang": { "en-US": { "role": { "documentation": "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.", "label": "Weighted Average Number of Shares Outstanding, Diluted", "totalLabel": "Weighted average shares used in diluted earnings per share calculations (in shares)" } } }, "localname": "WeightedAverageNumberOfDilutedSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": { "auth_ref": [ "r45", "r194", "r204" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperations": { "order": 1.0, "parentTag": "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding", "weight": 1.0 }, "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": 1.0, "parentTag": "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.", "label": "Weighted Average Number of Shares Outstanding, Basic", "terseLabel": "Weighted average shares outstanding used in basic earnings per share calculations (in shares)", "verboseLabel": "Weighted average shares outstanding used in basic per share calculations (in shares)" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingBasic", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperations", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Weighted Average Number of Shares Outstanding Reconciliation [Abstract]", "terseLabel": "Denominator" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract", "nsuri": "http://fasb.org/us-gaap/2016-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "stringItemType" } }, "unitCount": 10 } }, "std_ref": { "r0": { "Glossary": "Accident Year", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=65671116" }, "r1": { "Glossary": "Accumulated Benefit Obligation", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6503844" }, "r10": { "Glossary": "Common Stock", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6508022" }, "r100": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.25)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r101": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.28,29)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r102": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29,30)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r103": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29-31)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r104": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.31)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r105": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.8)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r106": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=49176635&loc=d3e9760-107771" }, "r107": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312" }, "r108": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312" }, "r109": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313" }, "r11": { "Glossary": "Comprehensive Income", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=51831223" }, "r110": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=51825145&loc=SL20226003-175313" }, "r111": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580" }, "r112": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a),(b),(c)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580" }, "r113": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580" }, "r114": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e),(f),(h)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580" }, "r115": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580" }, "r116": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580" }, "r117": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i),(j),(k)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580" }, "r118": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i-k)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580" }, "r119": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(j)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580" }, "r12": { "Glossary": "Contingent Stock Agreement", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6508534" }, "r120": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580" }, "r121": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580" }, "r122": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580" }, "r123": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580" }, "r124": { "Name": "Accounting Standards Codification", "Paragraph": "14A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580" }, "r125": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580" }, "r126": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=d3e709-108580" }, "r127": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=d3e716-108580" }, "r128": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669619-108580" }, "r129": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=SL7669625-108580" }, "r13": { "Glossary": "Current Tax Expense (or Benefit)", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6509736" }, "r130": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004124&loc=d3e557-108580" }, "r131": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=66004921&loc=d3e1436-108581" }, "r132": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.3-03(e))", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20187-122688" }, "r133": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(b)(7)", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20187-122688" }, "r134": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(1))", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r135": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(10))", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r136": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(20))", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r137": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(21))", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r138": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(7)(c))", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r139": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(9)(a))", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r14": { "Glossary": "Deferred Tax Asset", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6510090" }, "r140": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.1)", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r141": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.21)", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r142": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.4)", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r143": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.7(a),(b))", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r144": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.7(c),9(a))", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r145": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.7,9)", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r146": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.8)", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r147": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.9)", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r148": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Topic": "225", "URI": "http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688" }, "r149": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585" }, "r15": { "Glossary": "Deferred Tax Expense (or Benefit)", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=63044130" }, "r150": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a),(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585" }, "r151": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585" }, "r152": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585" }, "r153": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585" }, "r154": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585" }, "r155": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585" }, "r156": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585" }, "r157": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585" }, "r158": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585" }, "r159": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585" }, "r16": { "Glossary": "Deferred Tax Liability", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6510232" }, "r160": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585" }, "r161": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585" }, "r162": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585" }, "r163": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585" }, "r164": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585" }, "r165": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585" }, "r166": { "Name": "Accounting Standards Codification", "Paragraph": "26", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3574-108585" }, "r167": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585" }, "r168": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585" }, "r169": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585" }, "r17": { "Glossary": "Defined Benefit Plan", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=49172387" }, "r170": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3044-108585" }, "r171": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3095-108585" }, "r172": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585" }, "r173": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585" }, "r174": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=6367179&loc=d3e4273-108586" }, "r175": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586" }, "r176": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=68058157&loc=d3e18780-107790" }, "r177": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(d))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r178": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(e))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r179": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(h))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r18": { "Glossary": "Diluted Earnings Per Share", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6510752" }, "r180": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(d),(e))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r181": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(e))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r182": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(e),(f))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r183": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(f))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r184": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(h)(1)(i))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r185": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(h)(2))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r186": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(h))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r187": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(m))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r188": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-04)", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690" }, "r189": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-09)", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690" }, "r19": { "Glossary": "Disposal Group", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=51717262" }, "r190": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690" }, "r191": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=64853466&loc=d3e22644-107794" }, "r192": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=64853466&loc=d3e22658-107794" }, "r193": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=64853466&loc=d3e22663-107794" }, "r194": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=64863997&loc=d3e1448-109256" }, "r195": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=64863997&loc=d3e1505-109256" }, "r196": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256" }, "r197": { "Name": "Accounting Standards Codification", "Paragraph": "28A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=64863997&loc=d3e1500-109256" }, "r198": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=64863997&loc=d3e1278-109256" }, "r199": { "Name": "Accounting Standards Codification", "Paragraph": "60", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=64863997&loc=d3e2740-109256" }, "r2": { "Glossary": "Accumulated Postretirement Benefit Obligation", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6503904" }, "r20": { "Glossary": "Expected Long-Term Rate of Return on Plan Assets", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6512046" }, "r200": { "Name": "Accounting Standards Codification", "Paragraph": "60A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=64863997&loc=SL5780132-109256" }, "r201": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=64863997&loc=SL5780133-109256" }, "r202": { "Name": "Accounting Standards Codification", "Paragraph": "65", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=64863997&loc=d3e2793-109256" }, "r203": { "Name": "Accounting Standards Codification", "Paragraph": "66", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=64863997&loc=d3e2814-109256" }, "r204": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257" }, "r205": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257" }, "r206": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257" }, "r207": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257" }, "r208": { "Name": "Accounting Standards Codification", "Paragraph": "52", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258" }, "r209": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "270", "URI": "http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305" }, "r21": { "Glossary": "Expected Return on Plan Assets", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6512171" }, "r210": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "270", "URI": "http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305" }, "r211": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)-(j)", "Topic": "270", "URI": "http://asc.fasb.org/extlink&oid=68076893&loc=d3e1280-108306" }, "r212": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "270", "URI": "http://asc.fasb.org/extlink&oid=68076893&loc=d3e1570-108306" }, "r213": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592" }, "r214": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592" }, "r215": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=64851502&loc=d3e6003-108592" }, "r216": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592" }, "r217": { "Name": "Accounting Standards Codification", "Paragraph": "2A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=64851502&loc=SL51803626-108592" }, "r218": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=64851502&loc=d3e6061-108592" }, "r219": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=64851502&loc=d3e6132-108592" }, "r22": { "Glossary": "Financing Activities", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6513228" }, "r220": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=64851502&loc=d3e6143-108592" }, "r221": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599" }, "r222": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599" }, "r223": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599" }, "r224": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8657-108599" }, "r225": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599" }, "r226": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599" }, "r227": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599" }, "r228": { "Name": "Accounting Standards Codification", "Paragraph": "26", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599" }, "r229": { "Name": "Accounting Standards Codification", "Paragraph": "29", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599" }, "r23": { "Glossary": "Gain or Loss", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=49168827" }, "r230": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599" }, "r231": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599" }, "r232": { "Name": "Accounting Standards Codification", "Paragraph": "31", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599" }, "r233": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599" }, "r234": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599" }, "r235": { "Name": "Accounting Standards Codification", "Paragraph": "34", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599" }, "r236": { "Name": "Accounting Standards Codification", "Paragraph": "35", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599" }, "r237": { "Name": "Accounting Standards Codification", "Paragraph": "40", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599" }, "r238": { "Name": "Accounting Standards Codification", "Paragraph": "41", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599" }, "r239": { "Name": "Accounting Standards Codification", "Paragraph": "41", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599" }, "r24": { "Glossary": "Income Tax Expense (or Benefit)", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6515339" }, "r240": { "Name": "Accounting Standards Codification", "Paragraph": "42", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599" }, "r241": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "05", "SubTopic": "10", "Topic": "305", "URI": "http://asc.fasb.org/extlink&oid=6375392&loc=d3e26790-107797" }, "r242": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524" }, "r243": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524" }, "r244": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524" }, "r245": { "Name": "Accounting Standards Codification", "Paragraph": "29", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=66008989&loc=SL6953659-111524" }, "r246": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=66008989&loc=d3e5066-111524" }, "r247": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524" }, "r248": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=66008989&loc=d3e5144-111524" }, "r249": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=32702940&loc=SL6953803-111525" }, "r25": { "Glossary": "Intangible Assets", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6515781" }, "r250": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 4.E)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707" }, "r251": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 4.E)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707" }, "r252": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.L.1)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707" }, "r253": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(1)(ii)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544" }, "r254": { "Glossary": "Debt Security", "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=6509901" }, "r255": { "Glossary": "Equity Security", "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=6511694" }, "r256": { "Glossary": "Security", "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=6524771" }, "r257": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558" }, "r258": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558" }, "r259": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560" }, "r26": { "Glossary": "Investing Activities", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6516133" }, "r260": { "Name": "Accounting Standards Codification", "Paragraph": "34", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=27723805&loc=d3e25351-111560" }, "r261": { "Name": "Accounting Standards Codification", "Paragraph": "35", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=27723805&loc=d3e25362-111560" }, "r262": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562" }, "r263": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=66010992&loc=d3e26853-111562" }, "r264": { "Name": "Accounting Standards Codification", "Paragraph": "9A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=66010992&loc=SL6284427-111562" }, "r265": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27405-111563" }, "r266": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=SL6283291-111563" }, "r267": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563" }, "r268": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563" }, "r269": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563" }, "r27": { "Glossary": "Level 1 Inputs", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=51652821" }, "r270": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563" }, "r271": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563" }, "r272": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27198-111563" }, "r273": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27198-111563" }, "r274": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27198-111563" }, "r275": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27198-111563" }, "r276": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27198-111563" }, "r277": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563" }, "r278": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563" }, "r279": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563" }, "r28": { "Glossary": "Level 2 Inputs", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=51652837" }, "r280": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563" }, "r281": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563" }, "r282": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563" }, "r283": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27337-111563" }, "r284": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27340-111563" }, "r285": { "Name": "Accounting Standards Codification", "Paragraph": "8B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=SL6284393-111563" }, "r286": { "Name": "Accounting Standards Codification", "Paragraph": "8B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=SL6284393-111563" }, "r287": { "Name": "Accounting Standards Codification", "Paragraph": "8B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=SL6284393-111563" }, "r288": { "Name": "Accounting Standards Codification", "Paragraph": "8B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=SL6284393-111563" }, "r289": { "Name": "Accounting Standards Codification", "Paragraph": "8B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=SL6284393-111563" }, "r29": { "Glossary": "Level 3 Inputs", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=51652851" }, "r290": { "Name": "Accounting Standards Codification", "Paragraph": "8B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=SL6284393-111563" }, "r291": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563" }, "r292": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)-(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563" }, "r293": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563" }, "r294": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)-(e)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563" }, "r295": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c-e)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563" }, "r296": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563" }, "r297": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563" }, "r298": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563" }, "r299": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 5.M)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=65877573&loc=d3e87990-122713" }, "r3": { "Glossary": "Actual Return on Plan Assets (Component of Net Periodic Pension Cost)", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6504226" }, "r30": { "Glossary": "Market-Corroborated Inputs", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6517519" }, "r300": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 5.M)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=65877573&loc=d3e87990-122713" }, "r301": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "323", "URI": "http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571" }, "r302": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "325", "URI": "http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596" }, "r303": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "30", "SubTopic": "10", "Topic": "330", "URI": "http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311" }, "r304": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266" }, "r305": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266" }, "r306": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975" }, "r307": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267" }, "r308": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a,h)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267" }, "r309": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267" }, "r31": { "Glossary": "Net Income", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=51831255" }, "r310": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267" }, "r311": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(f)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267" }, "r312": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267" }, "r313": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267" }, "r314": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267" }, "r315": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267" }, "r316": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274" }, "r317": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274" }, "r318": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275" }, "r319": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(3)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275" }, "r32": { "Glossary": "Other Comprehensive Income", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=51831270" }, "r320": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275" }, "r321": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "((a)(1),(b))", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r322": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r323": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(1)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r324": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(2)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r325": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r326": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r327": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275" }, "r328": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275" }, "r329": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=68055307&loc=d3e2443-110228" }, "r33": { "Glossary": "Parent", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6923511" }, "r330": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r331": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r332": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r333": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r334": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=64862545&loc=d3e2921-110230" }, "r335": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=64862545&loc=d3e2941-110230" }, "r336": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=64862545&loc=d3e2941-110230" }, "r337": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=64862545&loc=SL51724579-110230" }, "r338": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=64862545&loc=SL51724579-110230" }, "r339": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869" }, "r34": { "Glossary": "Plan Assets", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6520858" }, "r340": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(2)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869" }, "r341": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 5.P.3)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747" }, "r342": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 5.P.4(b))", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747" }, "r343": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 5.P.4(b))", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747" }, "r344": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=73718637&loc=d3e25287-109308" }, "r345": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349" }, "r346": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349" }, "r347": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349" }, "r348": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=7661617&loc=d3e11019-110243" }, "r349": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=7661617&loc=d3e11049-110243" }, "r35": { "Glossary": "Plan Assets", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6749337" }, "r350": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248" }, "r351": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248" }, "r352": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249" }, "r353": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249" }, "r354": { "Name": "Accounting Standards Codification", "Paragraph": "12A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=28361426&loc=SL5988623-112600" }, "r355": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601" }, "r356": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=SL6230698-112601" }, "r357": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "40", "SubTopic": "50", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629" }, "r358": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "40", "SubTopic": "50", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629" }, "r359": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(CFRR 211.02)", "Topic": "480", "URI": "http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764" }, "r36": { "Glossary": "Plan Curtailment", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6520938" }, "r360": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Topic": "480", "URI": "http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764" }, "r361": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643" }, "r362": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6928386&loc=d3e21553-112644" }, "r363": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644" }, "r364": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644" }, "r365": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644" }, "r366": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644" }, "r367": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644" }, "r368": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644" }, "r369": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644" }, "r37": { "Glossary": "Postretirement Benefits", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6521376" }, "r370": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644" }, "r371": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.3-04)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770" }, "r372": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770" }, "r373": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 4.C)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770" }, "r374": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655" }, "r375": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656" }, "r376": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656" }, "r377": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=68057994&loc=d3e25284-112666" }, "r378": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=68061046&loc=SL49131195-203048" }, "r379": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919" }, "r38": { "Glossary": "Preferred Stock", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6521494" }, "r380": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r381": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r382": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r383": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r384": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(6)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r385": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r386": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r387": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r388": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r389": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r39": { "Glossary": "Prior Service Cost", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=49177896" }, "r390": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r391": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r392": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(5)(ii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r393": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(5)(iv)(01)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r394": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(i)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r395": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(ii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r396": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r397": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(f)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r398": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r399": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r4": { "Glossary": "Actual Return on Plan Assets (Component of Net Periodic Postretirement Benefit Cost)", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6504192" }, "r40": { "Glossary": "Projected Benefit Obligation", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6522206" }, "r400": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r401": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r402": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r403": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r404": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(7)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r405": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(i)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r406": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(j)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r407": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(k)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r408": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(k)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r409": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(l)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r41": { "Glossary": "Reclassification Adjustments", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6522872" }, "r410": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(m)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r411": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920" }, "r412": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e2410-114920" }, "r413": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e2417-114920" }, "r414": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e2439-114920" }, "r415": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920" }, "r416": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(i)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920" }, "r417": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(ii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920" }, "r418": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=73719040&loc=d3e4179-114921" }, "r419": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "15", "SubTopic": "30", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927" }, "r42": { "Glossary": "Service Cost (Component of Net Periodic Pension Cost)", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6525008" }, "r420": { "Name": "Accounting Standards Codification", "Paragraph": "50", "Publisher": "FASB", "Section": "35", "SubTopic": "30", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=64937038&loc=d3e12355-114930" }, "r421": { "Name": "Accounting Standards Codification", "Paragraph": "63", "Publisher": "FASB", "Section": "35", "SubTopic": "30", "Subparagraph": "B", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=64937038&loc=d3e12551-114930" }, "r422": { "Name": "Accounting Standards Codification", "Paragraph": "123", "Publisher": "FASB", "Section": "35", "SubTopic": "60", "Subparagraph": "B", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=64937487&loc=d3e36068-114959" }, "r423": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "60", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=66047640&loc=d3e39622-114963" }, "r424": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "60", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39675-114964" }, "r425": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "60", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964" }, "r426": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "70", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942" }, "r427": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947" }, "r428": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=66904339&loc=d3e4534-113899" }, "r429": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901" }, "r43": { "Glossary": "Trading Securities", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6526789" }, "r430": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901" }, "r431": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901" }, "r432": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901" }, "r433": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r434": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(3)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r435": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r436": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r437": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)(3)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r438": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(i)-(ii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r439": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r44": { "Glossary": "Unrecognized Tax Benefit", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6527854" }, "r440": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r441": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(3)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r442": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r443": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r444": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r445": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r446": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r447": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(ii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r448": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(iii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r449": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(iv)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r45": { "Glossary": "Weighted-Average Number of Common Shares Outstanding", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6528421" }, "r450": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(1)(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r451": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(2)(iii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r452": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r453": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901" }, "r454": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901" }, "r455": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 14)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809" }, "r456": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 14.D.2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809" }, "r457": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 14.F)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809" }, "r458": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=65896087&loc=d3e11149-113907" }, "r459": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=65896087&loc=d3e11178-113907" }, "r46": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-04(c)(Schedule I))", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674" }, "r460": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=65895303&loc=d3e17540-113929" }, "r461": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "35", "Subparagraph": "(a)", "Topic": "720", "URI": "http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848" }, "r462": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=68052875&loc=d3e28680-109314" }, "r463": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=68052875&loc=d3e28680-109314" }, "r464": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=75116654&loc=d3e32247-109318" }, "r465": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=75116654&loc=d3e32280-109318" }, "r466": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=75116654&loc=d3e31931-109318" }, "r467": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319" }, "r468": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319" }, "r469": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319" }, "r47": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-04.(c) Schedule III)", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674" }, "r470": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319" }, "r471": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319" }, "r472": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319" }, "r473": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319" }, "r474": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319" }, "r475": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319" }, "r476": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319" }, "r477": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319" }, "r478": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32809-109319" }, "r479": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32840-109319" }, "r48": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=65878427&loc=SL51721533-107759" }, "r480": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319" }, "r481": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319" }, "r482": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b),(c)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319" }, "r483": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319" }, "r484": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319" }, "r485": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319" }, "r486": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319" }, "r487": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32621-109319" }, "r488": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32632-109319" }, "r489": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319" }, "r49": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760" }, "r490": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319" }, "r491": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319" }, "r492": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319" }, "r493": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 6.I)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817" }, "r494": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.I.7)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817" }, "r495": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "05", "SubTopic": "30", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65884525&loc=d3e40913-109327" }, "r496": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=65885119&loc=d3e1383-128463" }, "r497": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463" }, "r498": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463" }, "r499": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=65885119&loc=d3e1486-128463" }, "r5": { "Glossary": "Antidilution", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6505113" }, "r50": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760" }, "r500": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=65885119&loc=d3e1490-128463" }, "r501": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=65885119&loc=d3e1497-128463" }, "r502": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=65885119&loc=d3e1524-128463" }, "r503": { "Name": "Accounting Standards Codification", "Paragraph": "37", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464" }, "r504": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472" }, "r505": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472" }, "r506": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=73530397&loc=d3e4922-128472" }, "r507": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=73530397&loc=d3e4926-128472" }, "r508": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=73530397&loc=d3e4934-128472" }, "r509": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=73530397&loc=SL65897772-128472" }, "r51": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=d3e1474-107760" }, "r510": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=73530397&loc=SL65897772-128472" }, "r511": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744439&loc=d3e5227-128473" }, "r512": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744439&loc=d3e5263-128473" }, "r513": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744439&loc=d3e5333-128473" }, "r514": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "30", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477" }, "r515": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "30", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477" }, "r516": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479" }, "r517": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(2)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479" }, "r518": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(d)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479" }, "r519": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479" }, "r52": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=SL51721659-107760" }, "r520": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6996-128479" }, "r521": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e7000-128479" }, "r522": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479" }, "r523": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=68079674&loc=d3e5283-111683" }, "r524": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=68079674&loc=SL4568447-111683" }, "r525": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=68079674&loc=SL4568740-111683" }, "r526": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683" }, "r527": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=68079674&loc=SL4569655-111683" }, "r528": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64809438&loc=d3e5614-111684" }, "r529": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684" }, "r53": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=SL51721663-107760" }, "r530": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c),(3)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684" }, "r531": { "Name": "Accounting Standards Codification", "Paragraph": "2AA", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "a", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=SL6759068-111685" }, "r532": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=d3e5710-111685" }, "r533": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=d3e5710-111685" }, "r534": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=d3e5728-111685" }, "r535": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "b", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=d3e5728-111685" }, "r536": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=d3e5728-111685" }, "r537": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=SL6759159-111685" }, "r538": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=SL6759159-111685" }, "r539": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=SL6759159-111685" }, "r54": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=SL51721665-107760" }, "r540": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=d3e5747-111685" }, "r541": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "d", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=d3e5747-111685" }, "r542": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=d3e5747-111685" }, "r543": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=64801991&loc=SL6228884-111685" }, "r544": { "Name": "Accounting Standards Codification", "Paragraph": "4I", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=65897068&loc=SL4590271-111686" }, "r545": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.3A-02)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=27015204&loc=d3e355033-122828" }, "r546": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.3A-03)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=27015204&loc=d3e355100-122828" }, "r547": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=64837297&loc=d3e41620-113959" }, "r548": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959" }, "r549": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959" }, "r55": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=SL51721671-107760" }, "r550": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(c)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959" }, "r551": { "Name": "Accounting Standards Codification", "Paragraph": "4C", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(c),(d),(e)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959" }, "r552": { "Name": "Accounting Standards Codification", "Paragraph": "4F", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=64837297&loc=SL5624186-113959" }, "r553": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=64837297&loc=SL5708775-113959" }, "r554": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=64837297&loc=SL5708775-113959" }, "r555": { "Name": "Accounting Standards Codification", "Paragraph": "182", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=68066869&loc=SL5629052-113961" }, "r556": { "Name": "Accounting Standards Codification", "Paragraph": "48", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=65894324&loc=d3e18349-110257" }, "r557": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258" }, "r558": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258" }, "r559": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258" }, "r56": { "Name": "Accounting Standards Codification", "Paragraph": "5B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760" }, "r560": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258" }, "r561": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258" }, "r562": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258" }, "r563": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258" }, "r564": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258" }, "r565": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258" }, "r566": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(3)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258" }, "r567": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258" }, "r568": { "Name": "Accounting Standards Codification", "Paragraph": "2C", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=SL7498348-110258" }, "r569": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258" }, "r57": { "Name": "Accounting Standards Codification", "Paragraph": "5C", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760" }, "r570": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=SL6742756-110258" }, "r571": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=SL6742756-110258" }, "r572": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=66048111&loc=SL6742756-110258" }, "r573": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=6447952&loc=d3e13217-108610" }, "r574": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610" }, "r575": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611" }, "r576": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611" }, "r577": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611" }, "r578": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=73719730&loc=d3e13467-108611" }, "r579": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=73719730&loc=d3e13476-108611" }, "r58": { "Name": "Accounting Standards Codification", "Paragraph": "5D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=SL51721677-107760" }, "r580": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=73719730&loc=d3e13504-108611" }, "r581": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611" }, "r582": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611" }, "r583": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(b)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611" }, "r584": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611" }, "r585": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612" }, "r586": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612" }, "r587": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612" }, "r588": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621" }, "r589": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895" }, "r59": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760" }, "r590": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "230", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=49171198&loc=d3e33268-110906" }, "r591": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(b,c)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900" }, "r592": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(c)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900" }, "r593": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901" }, "r594": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391" }, "r595": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399" }, "r596": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399" }, "r597": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399" }, "r598": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400" }, "r599": { "Name": "Accounting Standards Codification", "Paragraph": "40", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(Note 3)", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697" }, "r6": { "Glossary": "Available-for-Sale Securities", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6505594" }, "r60": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765" }, "r600": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "05", "SubTopic": "20", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=6453394&loc=d3e39740-112701" }, "r601": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717" }, "r602": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717" }, "r603": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717" }, "r604": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717" }, "r605": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737" }, "r606": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "05", "SubTopic": "40", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=6456037&loc=d3e48589-112741" }, "r607": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864" }, "r608": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "855", "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662" }, "r609": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)(i)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=64830801&loc=d3e107207-111719" }, "r61": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765" }, "r610": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=64830801&loc=d3e107314-111719" }, "r611": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=64830801&loc=SL51823488-111719" }, "r612": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=64830801&loc=d3e107425-111719" }, "r613": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=64858031&loc=SL6224234-111729" }, "r614": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "20", "Topic": "940", "URI": "http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953" }, "r615": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "55", "SubTopic": "405", "Topic": "940", "URI": "http://asc.fasb.org/extlink&oid=35710563&loc=d3e44140-110984" }, "r616": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(10))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r617": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(11))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r618": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(13))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r619": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(15)(1))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r62": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765" }, "r620": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(15)(2))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r621": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(15)(5))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r622": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(16))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r623": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(22))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r624": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r625": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(4))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r626": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(5))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r627": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(6))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r628": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.10)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r629": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.15(1),(5))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r63": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r630": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.15(5))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r631": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.15)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r632": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.17)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r633": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.3,13(1))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r634": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.5)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r635": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.6(a)(1))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r636": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.7(a)(3))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r637": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.7(d))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r638": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.9-04(13)(g))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882" }, "r639": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.9-04(15))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882" }, "r64": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(12))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r640": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.9-04(22))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882" }, "r641": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.9-04(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882" }, "r642": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.9-04.13(c))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882" }, "r643": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.9-04.9)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882" }, "r644": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.9-06)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6882215&loc=d3e537971-122884" }, "r645": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(a)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803" }, "r646": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(b)-(g)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803" }, "r647": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803" }, "r648": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(a)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803" }, "r649": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803" }, "r65": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(13))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r650": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(c)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803" }, "r651": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(d)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803" }, "r652": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803" }, "r653": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "405", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817" }, "r654": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "470", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823" }, "r655": { "Glossary": "Separate Account", "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6524887" }, "r656": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.7-05(c)(Schedule II))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879921&loc=d3e569147-122900" }, "r657": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.7-05.(c) Schedule III)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879921&loc=d3e569147-122900" }, "r658": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.7-05.(c) Schedule IV)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879921&loc=d3e569147-122900" }, "r659": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6480726&loc=d3e6691-158385" }, "r66": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(14))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r660": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6480747&loc=d3e6764-158386" }, "r661": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6480747&loc=d3e6772-158386" }, "r662": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6480758&loc=d3e6811-158387" }, "r663": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6480758&loc=d3e6816-158387" }, "r664": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6480758&loc=d3e6824-158387" }, "r665": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6933001&loc=SL5747862-161289" }, "r666": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6588021&loc=d3e7104-158389" }, "r667": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Subparagraph": "(2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=27015749&loc=d3e569990-122904" }, "r668": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Subparagraph": "(3)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=27015749&loc=d3e569990-122904" }, "r669": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Subparagraph": "2", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=27015749&loc=d3e569990-122904" }, "r67": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(17))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r670": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=27015749&loc=d3e569990-122904" }, "r671": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(10))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r672": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(13)(a))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r673": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(15)(b)(2))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r674": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(16))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r675": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(1)(b))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r676": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(1)(g))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r677": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(1))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r678": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(10))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r679": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(11))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r68": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(19))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r680": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(12))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r681": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(13)(a)(2))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r682": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(15)(a))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r683": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(15))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r684": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(16))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r685": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(18))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r686": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(a)(4))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r687": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(c))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r688": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(24))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r689": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(25))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r69": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(2))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r690": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(4))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r691": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(7))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r692": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(8))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r693": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.(a),19)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r694": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.(a),5)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r695": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.(a),6)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r696": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.1(c))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r697": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.1(f,g))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r698": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.1(g))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r699": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.1(h))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r7": { "Glossary": "Benefits", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=49170737" }, "r70": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(20))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r700": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.10)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r701": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.13(a)(1))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r702": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.13(a)(3),(c))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r703": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.13(c))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r704": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.15(a))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r705": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.15)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r706": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.23(c))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r707": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.5)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r708": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.6,13)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r709": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04(18))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r71": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(22))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r710": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04(19))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r711": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04(2))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r712": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04(3)(d))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r713": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04(7)(a))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r714": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04(8))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r715": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04.1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r716": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04.2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r717": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04.3(a))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r718": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04.4)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r719": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04.5)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r72": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(24))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r720": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "(SX 210.7-04.5,6,7)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r721": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "225", "Subparagraph": "7", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913" }, "r722": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.12-16(Column B))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915" }, "r723": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.12-16(Column D))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915" }, "r724": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.12-16(Column G))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915" }, "r725": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.12-16(Column I))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915" }, "r726": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.12-16)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915" }, "r727": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915" }, "r728": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.12-17)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915" }, "r729": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915" }, "r73": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(26)(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r730": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.12-18(Column B))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e575016-122915" }, "r731": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.12-18(Column I))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e575016-122915" }, "r732": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.12-18)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e575016-122915" }, "r733": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "35", "SubTopic": "30", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=49177698&loc=d3e10157-158409" }, "r734": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6481648&loc=d3e11198-158413" }, "r735": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=35755530&loc=d3e11264-158415" }, "r736": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(c)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=35755530&loc=d3e11264-158415" }, "r737": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=35755530&loc=d3e11264-158415" }, "r738": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6481813&loc=d3e11407-158417" }, "r739": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=68057816&loc=d3e11446-158418" }, "r74": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(26)(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r740": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "310", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6485522&loc=d3e21409-158489" }, "r741": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "45", "SubTopic": "310", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6485522&loc=d3e21412-158489" }, "r742": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6485557&loc=d3e21549-158491" }, "r743": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290" }, "r744": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=28366721&loc=d3e22002-158495" }, "r745": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "325", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6485959&loc=d3e22529-158502" }, "r746": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "25", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=28366191&loc=d3e13145-158430" }, "r747": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670824&loc=d3e14754-158437" }, "r748": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437" }, "r749": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(b)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437" }, "r75": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(27))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r750": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(c)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437" }, "r751": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(cc)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437" }, "r752": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437" }, "r753": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670685&loc=SL65671311-158438" }, "r754": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(b)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670685&loc=SL65671311-158438" }, "r755": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670685&loc=SL65671311-158438" }, "r756": { "Name": "Accounting Standards Codification", "Paragraph": "4C", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670685&loc=SL65671315-158438" }, "r757": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670685&loc=SL65671317-158438" }, "r758": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(b)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670685&loc=SL65671317-158438" }, "r759": { "Name": "Accounting Standards Codification", "Paragraph": "4E", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670685&loc=SL65671321-158438" }, "r76": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(28))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r760": { "Name": "Accounting Standards Codification", "Paragraph": "4G", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65670685&loc=SL65671329-158438" }, "r761": { "Name": "Accounting Standards Codification", "Paragraph": "9C", "Publisher": "FASB", "Section": "55", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=65671386&loc=SL65671395-207642" }, "r762": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529" }, "r763": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529" }, "r764": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Subparagraph": "(b)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24727-158529" }, "r765": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24746-158529" }, "r766": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24755-158529" }, "r767": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24779-158529" }, "r768": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24790-158529" }, "r769": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "55", "SubTopic": "505", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6588579&loc=d3e24938-158530" }, "r77": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(29))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r770": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "55", "SubTopic": "505", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6588579&loc=d3e24959-158530" }, "r771": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "605", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486390&loc=d3e25715-158539" }, "r772": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "25", "SubTopic": "605", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486390&loc=d3e25718-158539" }, "r773": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "605", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486662&loc=d3e27175-158546" }, "r774": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "605", "Subparagraph": "(b),(c)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547" }, "r775": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "605", "Subparagraph": "(b),(c)(2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547" }, "r776": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "605", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547" }, "r777": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "605", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27374-158547" }, "r778": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "55", "SubTopic": "605", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34714010&loc=d3e27703-158548" }, "r779": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "55", "SubTopic": "605", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34714010&loc=d3e27758-158548" }, "r78": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r780": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "55", "SubTopic": "605", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34714010&loc=d3e27795-158548" }, "r781": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "605", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34714010&loc=d3e27830-158548" }, "r782": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "80", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6484091&loc=d3e19268-158472" }, "r783": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(b)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6484115&loc=d3e19393-158473" }, "r784": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(d)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6484115&loc=d3e19393-158473" }, "r785": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(e)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6484115&loc=d3e19393-158473" }, "r786": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6484115&loc=d3e19393-158473" }, "r787": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "825", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6487548&loc=d3e32546-158582" }, "r788": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "825", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=28088331&loc=SL29635902-196195" }, "r789": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12(2)(i))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010" }, "r79": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r790": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12)", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010" }, "r791": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12.2(ii))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010" }, "r792": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12C(1)(a))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010" }, "r793": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12C(1)(b))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010" }, "r794": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12C(2))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010" }, "r795": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12C.1(b),2)", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010" }, "r796": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12C.4,6)", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010" }, "r797": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12C(2))-", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010" }, "r798": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-13(1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611282-123010" }, "r799": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15)", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010" }, "r8": { "Glossary": "Cash", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6506951" }, "r80": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r800": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "450", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=6491354&loc=d3e6049-115624" }, "r801": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "450", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=6491354&loc=d3e6052-115624" }, "r802": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "740", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=6491622&loc=d3e9504-115650" }, "r803": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "360", "Subparagraph": "(SX 210.12-28)", "Topic": "970", "URI": "http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024" }, "r804": { "Name": "Regulation 12B", "Number": "240", "Publisher": "SEC", "Section": "12b", "Subsection": "1" }, "r805": { "Article": "12", "Footnote": "2", "Name": "Regulation S-X (SX)", "Number": "210", "Publisher": "SEC", "Section": "12" }, "r806": { "Article": "12", "Name": "Regulation S-X (SX)", "Number": "210", "Publisher": "SEC", "Section": "12", "Sentence": "Column A" }, "r807": { "Article": "6", "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(c)", "Publisher": "SEC", "Section": "10", "Subparagraph": "(1)" }, "r81": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r82": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(31))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r83": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(32))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r84": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(8))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r85": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.1)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r86": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.12)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r87": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.13(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r88": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.13)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r89": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.13-14)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r9": { "Glossary": "Cash Equivalents", "Name": "Accounting Standards Codification", "Publisher": "FASB", "URI": "http://asc.fasb.org/extlink&oid=6507016" }, "r90": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.14)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r91": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r92": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(b),22(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r93": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r94": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19,20,22)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r95": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19-26)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r96": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.2)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r97": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.2,12)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r98": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22(a)(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r99": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" } }, "version": "2.0" }