{ "instance": { "aiz-2018063010q.htm": { "axisCustom": 1, "axisStandard": 49, "contextCount": 572, "dts": { "calculationLink": { "local": [ "aiz-20180630_cal.xml" ] }, "definitionLink": { "local": [ "aiz-20180630_def.xml" ], "remote": [ "http://xbrl.fasb.org/srt/2018/elts/srt-eedm1-def-2018-01-31.xml", "http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-eedm-def-2018-01-31.xml" ] }, "inline": { "local": [ "aiz-2018063010q.htm" ] }, "labelLink": { "local": [ "aiz-20180630_lab.xml" ], "remote": [ "http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-doc-2018-01-31.xml", "http://xbrl.sec.gov/invest/2013/invest-doc-2013-01-31.xml", "https://xbrl.sec.gov/dei/2018/dei-doc-2018-01-31.xml" ] }, "presentationLink": { "local": [ "aiz-20180630_pre.xml" ] }, "referenceLink": { "remote": [ "http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-ref-2018-01-31.xml", "http://xbrl.sec.gov/invest/2013/invest-ref-2013-01-31.xml", "https://xbrl.sec.gov/dei/2018/dei-ref-2018-01-31.xml" ] }, "schema": { "local": [ "aiz-20180630.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://www.xbrl.org/lrr/role/reference-2009-12-16.xsd", "http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd", "http://xbrl.fasb.org/srt/2018/elts/srt-roles-2018-01-31.xsd", "http://xbrl.fasb.org/srt/2018/elts/srt-types-2018-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2018/elts/us-parts-codification-2018-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2018/elts/us-roles-2018-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2018/elts/us-types-2018-01-31.xsd", "http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd", "http://xbrl.sec.gov/currency/2017/currency-2017-01-31.xsd", "http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd", "http://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd", "http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd", "https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd", "https://xbrl.sec.gov/exch/2018/exch-2018-01-31.xsd", "https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd" ] } }, "elementCount": 750, "entityCount": 1, "hidden": { "http://fasb.org/us-gaap/2018-01-31": 50, "http://www.assurant.com/20180630": 3, "http://xbrl.sec.gov/dei/2018-01-31": 9, "total": 62 }, "keyCustom": 51, "keyStandard": 355, "memberCustom": 50, "memberStandard": 90, "nsprefix": "aiz", "nsuri": "http://www.assurant.com/20180630", "report": { "R1": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "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": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R10": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "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": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:NatureOfOperations", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R11": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccounting", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2102100 - Disclosure - Basis of Presentation", "role": "http://www.assurant.com/role/BasisOfPresentation", "shortName": "Basis of Presentation", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccounting", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R12": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2103100 - Disclosure - Recent Accounting Pronouncements", "role": "http://www.assurant.com/role/RecentAccountingPronouncements", "shortName": "Recent Accounting Pronouncements", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R13": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BusinessCombinationDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2104100 - Disclosure - Acquisitions", "role": "http://www.assurant.com/role/Acquisitions", "shortName": "Acquisitions", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BusinessCombinationDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R14": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SegmentReportingDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2105100 - Disclosure - Segment Information", "role": "http://www.assurant.com/role/SegmentInformation", "shortName": "Segment Information", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SegmentReportingDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R15": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RevenueFromContractWithCustomerTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2106100 - Disclosure - Contract Revenues", "role": "http://www.assurant.com/role/ContractRevenues", "shortName": "Contract Revenues", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RevenueFromContractWithCustomerTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R16": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "invest:InvestmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2106100 - Disclosure - Investments", "role": "http://www.assurant.com/role/Investments", "shortName": "Investments", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "invest:InvestmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R17": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:VariableInterestEntityDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2107100 - Disclosure - Variable Interest Entities", "role": "http://www.assurant.com/role/VariableInterestEntities", "shortName": "Variable Interest Entities", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:VariableInterestEntityDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R18": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2109100 - Disclosure - Fair Value Disclosures", "role": "http://www.assurant.com/role/FairValueDisclosures", "shortName": "Fair Value Disclosures", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R19": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:InsuranceDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2110100 - Disclosure - Reserves", "role": "http://www.assurant.com/role/Reserves", "shortName": "Reserves", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:InsuranceDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R2": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2018Q2", "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": "FI2018Q2", "decimals": "-5", "lang": null, "name": "us-gaap:EquitySecuritiesFvNi", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R20": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2111100 - Disclosure - Goodwill and Other Intangible Assets", "role": "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssets", "shortName": "Goodwill and Other Intangible Assets", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R21": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DebtDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2112100 - Disclosure - Debt", "role": "http://www.assurant.com/role/Debt", "shortName": "Debt", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DebtDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R22": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2113100 - 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": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R23": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2114100 - Disclosure - Stock Based Compensation", "role": "http://www.assurant.com/role/StockBasedCompensation", "shortName": "Stock Based Compensation", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R24": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:TreasuryStockTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2115100 - Disclosure - Equity Transactions", "role": "http://www.assurant.com/role/EquityTransactions", "shortName": "Equity Transactions", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:TreasuryStockTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R25": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2116100 - 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": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R26": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2118100 - 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": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R27": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2119100 - Disclosure - Commitments and Contingencies", "role": "http://www.assurant.com/role/CommitmentsAndContingencies", "shortName": "Commitments and Contingencies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R28": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2120100 - Disclosure - Income Taxes", "role": "http://www.assurant.com/role/IncomeTaxes", "shortName": "Income Taxes", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R29": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2121100 - Disclosure - Dispositions", "role": "http://www.assurant.com/role/Dispositions", "shortName": "Dispositions", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R3": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2018Q2", "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": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "aiz:VariableInterestEntityConsolidatedAssetsCash", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R30": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2202201 - Disclosure - Basis of Presentation (Policies)", "role": "http://www.assurant.com/role/BasisOfPresentationPolicies", "shortName": "Basis of Presentation (Policies)", "subGroupType": "policies", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R31": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2304301 - Disclosure - Acquisitions Acquisitions (Tables)", "role": "http://www.assurant.com/role/AcquisitionsAcquisitionsTables", "shortName": "Acquisitions Acquisitions (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R32": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2305301 - 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": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R33": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2306301 - Disclosure - Investments (Tables)", "role": "http://www.assurant.com/role/InvestmentsTables", "shortName": "Investments (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R34": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2307301 - 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": "FD2018Q2YTD", "decimals": null, "lang": "en-US", "name": "us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R35": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2309301 - 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": "FD2018Q2YTD", "decimals": null, "lang": "en-US", "name": "us-gaap:FairValueAssetsMeasuredOnNonrecurringBasisTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R36": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2310301 - Disclosure - Reserves (Tables)", "role": "http://www.assurant.com/role/ReservesTables", "shortName": "Reserves (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R37": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfGoodwillTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2311301 - Disclosure - Goodwill and Other Intangible Assets (Tables)", "role": "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsTables", "shortName": "Goodwill and Other Intangible Assets (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfGoodwillTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R38": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "aiz:InterestRateAdjustmentTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2312301 - Disclosure - Debt (Tables)", "role": "http://www.assurant.com/role/DebtTables", "shortName": "Debt (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "aiz:InterestRateAdjustmentTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R39": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2313301 - 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": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R4": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2018Q2QTD", "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 (unaudited)", "role": "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "shortName": "Consolidated Statements of Operations (unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2018Q2QTD", "decimals": "-5", "lang": null, "name": "us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R40": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2314301 - 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": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R41": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2316301 - 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": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R42": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfNetBenefitCostsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2318301 - 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": "FD2018Q2YTD", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfNetBenefitCostsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R43": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "2", "first": true, "lang": null, "name": "aiz:PercentageOfRevenueFromContractWithCustomers", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2403401 - Disclosure - Recent Accounting Pronouncements (Additional Information) (Details)", "role": "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails", "shortName": "Recent Accounting Pronouncements (Additional Information) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4YTD", "decimals": "2", "first": true, "lang": null, "name": "aiz:PercentageOfRevenueFromContractWithCustomers", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R44": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "D2018Q2MAY31_us-gaap_BusinessAcquisitionAxis_aiz_TWGHoldingsLimitedMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:BusinessCombinationConsiderationTransferred1", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2404402 - 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": "FI2018Q2_us-gaap_BusinessAcquisitionAxis_aiz_TWGHoldingsLimitedMember", "decimals": "3", "lang": null, "name": "us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R45": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "D2018Q2MAY31_us-gaap_BusinessAcquisitionAxis_aiz_TWGHoldingsLimitedMember", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2404403 - Disclosure - Acquisitions (Purchase Consideration) (Details)", "role": "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails", "shortName": "Acquisitions (Purchase Consideration) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "I2018Q2MAY31_us-gaap_BusinessAcquisitionAxis_aiz_TWGHoldingsLimitedMember", "decimals": "INF", "lang": null, "name": "us-gaap:BusinessAcquisitionSharePrice", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" } }, "R46": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2404404 - Disclosure - Acquisitions (Fair Value of Net Assets Acquired and Liabilities Assumed) (Details)", "role": "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "shortName": "Acquisitions (Fair Value of Net Assets Acquired and Liabilities Assumed) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "I2018Q2MAY31_us-gaap_BusinessAcquisitionAxis_aiz_TWGHoldingsLimitedMember", "decimals": "-5", "lang": null, "name": "us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R47": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD_us-gaap_BusinessAcquisitionAxis_aiz_TWGHoldingsLimitedMember", "decimals": "-5", "first": true, "lang": null, "name": "aiz:BusinessCombinationAcquisitionRelatedCostsIncurredtoDate", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2404405 - Disclosure - Acquisitions Acquisitions (Acquisition-related Costs) (Details)", "role": "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails", "shortName": "Acquisitions Acquisitions (Acquisition-related Costs) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD_us-gaap_BusinessAcquisitionAxis_aiz_TWGHoldingsLimitedMember", "decimals": "-5", "first": true, "lang": null, "name": "aiz:BusinessCombinationAcquisitionRelatedCostsIncurredtoDate", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R48": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:BusinessAcquisitionsProFormaRevenue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2404406 - Disclosure - Acquisitions (Supplemental Pro Forma Information) (Details)", "role": "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "shortName": "Acquisitions (Supplemental Pro Forma Information) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:BusinessAcquisitionsProFormaRevenue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R49": { "firstAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "body", "html" ], "contextRef": "I2017Q1Feb01", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2404407 - Disclosure - Acquisitions (Prior Year Acquisition) (Details)", "role": "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "shortName": "Acquisitions (Prior Year Acquisition) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "body", "html" ], "contextRef": "I2017Q1Feb01", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R5": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1003000 - Statement - Consolidated Statements of Comprehensive Income (unaudited)", "role": "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited", "shortName": "Consolidated Statements of Comprehensive Income (unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2018Q2QTD", "decimals": "-5", "lang": null, "name": "us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R50": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:NumberOfReportableSegments", "reportCount": 1, "unique": true, "unitRef": "reportable_segment", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2405402 - 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": "FD2018Q2YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:NumberOfReportableSegments", "reportCount": 1, "unique": true, "unitRef": "reportable_segment", "xsiNil": "false" } }, "R51": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ContractWithCustomerAssetNet", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406401 - Disclosure - Contract Revenues - Narrative (Details)", "role": "http://www.assurant.com/role/ContractRevenuesNarrativeDetails", "shortName": "Contract Revenues - Narrative (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2QTD_us-gaap_StatementBusinessSegmentsAxis_aiz_GlobalHousingMember", "decimals": "-5", "lang": null, "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R52": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406402 - 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": "FI2018Q2_us-gaap_InvestmentTypeAxis_us-gaap_FixedMaturitiesMember", "decimals": "-5", "lang": null, "name": "us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R53": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "INF", "first": true, "lang": null, "name": "aiz:NumberofIndividualStatesWithExposureExceedingOverallPortfolioThreshold", "reportCount": 1, "unique": true, "unitRef": "state", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406403 - 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": "FI2018Q2", "decimals": "INF", "first": true, "lang": null, "name": "aiz:NumberofIndividualStatesWithExposureExceedingOverallPortfolioThreshold", "reportCount": 1, "unique": true, "unitRef": "state", "xsiNil": "false" } }, "R54": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406404 - 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", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R55": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2018Q2QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DebtSecuritiesGainLossExcludingOtti", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406405 - 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": "FD2018Q2QTD", "decimals": "-5", "lang": null, "name": "us-gaap:OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R56": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:GainLossOnSaleOfEquityInvestments", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406406 - Disclosure - Investments Investments (Unrealized Gains on Equity Securities) (Details)", "role": "http://www.assurant.com/role/InvestmentsInvestmentsUnrealizedGainsOnEquitySecuritiesDetails", "shortName": "Investments Investments (Unrealized Gains on Equity Securities) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:GainLossOnSaleOfEquityInvestments", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R57": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2_us-gaap_InvestmentTypeAxis_us-gaap_FixedMaturitiesMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2406407 - Disclosure - Investments (Investment Category and Duration of Gross Unrealized Losses on Fixed Maturity Securities and Equity Securities) (Details)", "role": "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "shortName": "Investments (Investment 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": "FI2018Q2_us-gaap_InvestmentTypeAxis_us-gaap_FixedMaturitiesMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R58": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:Liabilities", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2407402 - 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": "FD2018Q2QTD_us-gaap_InvestmentTypeAxis_aiz_CollateralizedLoanObligationfundsMember_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember", "decimals": "-5", "lang": null, "name": "us-gaap:VariableInterestEntityFinancialOrOtherSupportAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R59": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2407403 - 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": "FI2018Q2_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember", "decimals": "-5", "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R6": { "firstAnchor": null, "groupType": "statement", "isDefault": "false", "longName": "1003501 - Statement - Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical)", "role": "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical", "shortName": "Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": null }, "R60": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2018Q1_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": "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2407404 - 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", "ix:continuation", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2018Q1_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": "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R61": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409402 - 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": "FI2018Q2_us-gaap_FairValueByLiabilityClassAxis_us-gaap_OtherLiabilitiesMember_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember", "decimals": "-5", "lang": null, "name": "us-gaap:LiabilitiesFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R62": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409403 - 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": "FI2018Q2_us-gaap_FairValueByMeasurementBasisAxis_us-gaap_CarryingReportedAmountFairValueDisclosureMember_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember", "decimals": "-5", "lang": null, "name": "us-gaap:MortgagesHeldForSaleFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R63": { "firstAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ReinsuranceRecoverablesAllowance", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2409404 - 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", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ReinsuranceRecoverablesAllowance", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R64": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "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": "2410402 - 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", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "lang": null, "name": "us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R65": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2410403 - 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": "FI2018Q2_us-gaap_StatementBusinessSegmentsAxis_aiz_GlobalHousingandGlobalLifestyleMember", "decimals": "-5", "lang": null, "name": "us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseAggregateReconcilingItems", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R66": { "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": "2411402 - Disclosure - Goodwill and Other Intangible Assets - Schedule of Goodwill (Details)", "role": "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails", "shortName": "Goodwill and Other Intangible Assets - Schedule of Goodwill (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": "-5", "lang": null, "name": "us-gaap:GoodwillAcquiredDuringPeriod", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R67": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:ValueOfBusinessAcquiredVOBA", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2411403 - Disclosure - Goodwill and Other Intangible Assets - VOBA and Other Intangible Assets (Details)", "role": "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails", "shortName": "Goodwill and Other Intangible Assets - VOBA and Other Intangible Assets (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2QTD", "decimals": "-5", "lang": null, "name": "us-gaap:AmortizationOfValueOfBusinessAcquiredVOBA", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R68": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2018Q2_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_aiz_VOBAMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2411404 - Disclosure - Goodwill and Other Intangible Assets - Intangible Assets Future Amortization (Details)", "role": "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails", "shortName": "Goodwill and Other Intangible Assets - Intangible Assets Future Amortization (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "div", "body", "html" ], "contextRef": "FI2018Q2_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_aiz_VOBAMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R69": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:LongTermDebt", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2412402 - Disclosure - Debt (Narrative) (Details)", "role": "http://www.assurant.com/role/DebtNarrativeDetails", "shortName": "Debt (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "D2018Q1Mar27_us-gaap_LongtermDebtTypeAxis_us-gaap_SeniorNotesMember", "decimals": "INF", "lang": null, "name": "aiz:DebtInstrumentNumberofSeries", "reportCount": 1, "unique": true, "unitRef": "series", "xsiNil": "false" } }, "R7": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1004000 - Statement - Consolidated Statement of Stockholders' Equity (unaudited)", "role": "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "shortName": "Consolidated Statement of Stockholders' Equity (unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2017Q4_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember", "decimals": "-5", "lang": null, "name": "us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R70": { "firstAnchor": null, "groupType": "disclosure", "isDefault": "false", "longName": "2412403 - Disclosure - Debt - Rating Agencies interest rate (Details)", "role": "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails", "shortName": "Debt - Rating Agencies interest rate (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R71": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FI2017Q4", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:StockholdersEquity", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2413402 - 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": "FD2018Q2QTD", "decimals": "-5", "lang": null, "name": "us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R72": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2018Q2QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DebtSecuritiesGainLossExcludingOtti", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2413403 - 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", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD_us-gaap_StatementEquityComponentsAxis_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember", "decimals": "-5", "lang": null, "name": "us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R73": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "I2017Q2_us-gaap_PlanNameAxis_aiz_LongTermEquityIncentivePlanMember", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2414402 - Disclosure - Stock Based Compensation (Long-Term Equity Incentive Plans) (Details)", "role": "http://www.assurant.com/role/StockBasedCompensationLongTermEquityIncentivePlansDetails", "shortName": "Stock Based Compensation (Long-Term Equity Incentive Plans) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "I2017Q2_us-gaap_PlanNameAxis_aiz_LongTermEquityIncentivePlanMember", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R74": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2QTD_us-gaap_AwardTypeAxis_us-gaap_RestrictedStockUnitsRSUMember_us-gaap_PlanNameAxis_aiz_LongTermEquityIncentivePlanMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AllocatedShareBasedCompensationExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2414403 - Disclosure - Stock Based Compensation (Restricted and Performance Stock Units) (Details)", "role": "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails", "shortName": "Stock Based Compensation (Restricted and Performance Stock Units) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2QTD_us-gaap_AwardTypeAxis_us-gaap_RestrictedStockUnitsRSUMember_us-gaap_PlanNameAxis_aiz_LongTermEquityIncentivePlanMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:AllocatedShareBasedCompensationExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R75": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:TreasuryStockSharesAcquired", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2415401 - Disclosure - Equity Transactions (Narrative) (Details)", "role": "http://www.assurant.com/role/EquityTransactionsNarrativeDetails", "shortName": "Equity Transactions (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:TreasuryStockSharesAcquired", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R76": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2QTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2416402 - 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", "div", "ix:continuation", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2QTD", "decimals": "-5", "lang": null, "name": "us-gaap:Dividends", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R77": { "firstAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "body", "html" ], "contextRef": "FD2018Q2QTD_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_us-gaap_PhantomShareUnitsPSUsMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2416403 - 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": "FD2018Q2QTD_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_us-gaap_PhantomShareUnitsPSUsMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R78": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "ix:continuation", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2QTD_us-gaap_RetirementPlanNameAxis_aiz_Plan1Member_us-gaap_RetirementPlanTaxStatusAxis_us-gaap_QualifiedPlanMember_us-gaap_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanInterestCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418402 - 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": "FD2018Q2QTD_us-gaap_RetirementPlanNameAxis_aiz_Plan1Member_us-gaap_RetirementPlanTaxStatusAxis_us-gaap_QualifiedPlanMember_us-gaap_RetirementPlanTypeAxis_us-gaap_PensionPlansDefinedBenefitMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanInterestCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R79": { "firstAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418403 - 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", "ix:continuation", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R8": { "firstAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1005000 - Statement - Consolidated Statements of Cash Flows (unaudited)", "role": "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited", "shortName": "Consolidated Statements of Cash Flows (unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "td", "tr", "table", "div", "div", "body", "html" ], "contextRef": "FD2018Q2YTD", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R80": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:LettersOfCreditOutstandingAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2419401 - 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": "FI2018Q2", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:LettersOfCreditOutstandingAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R81": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4QTD", "decimals": "-5", "first": true, "lang": null, "name": "aiz:TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2420401 - Disclosure - Income Taxes Income Taxes (Details)", "role": "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails", "shortName": "Income Taxes Income Taxes (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2017Q4QTD", "decimals": "-5", "first": true, "lang": null, "name": "aiz:TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R82": { "firstAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD_us-gaap_DisposalGroupClassificationAxis_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_aiz_MortgageSolutionsBusinessMember_us-gaap_IncomeStatementLocationAxis_us-gaap_SellingGeneralAndAdministrativeExpensesMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2421401 - Disclosure - Dispositions (Details)", "role": "http://www.assurant.com/role/DispositionsDetails", "shortName": "Dispositions (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "span", "div", "ix:continuation", "body", "html" ], "contextRef": "FD2018Q2YTD_us-gaap_DisposalGroupClassificationAxis_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_aiz_MortgageSolutionsBusinessMember_us-gaap_IncomeStatementLocationAxis_us-gaap_SellingGeneralAndAdministrativeExpensesMember", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R9": { "firstAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "td", "tr", "table", "body", "html" ], "contextRef": "FD2017Q2YTD", "decimals": "-5", "first": true, "lang": null, "name": "aiz:PaymentsofExaminationComplianceandMonitoringCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1005001 - Statement - Consolidated Statements of Cash Flows (unaudited) (Parenthetical)", "role": "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical", "shortName": "Consolidated Statements of Cash Flows (unaudited) (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "span", "ix:continuation", "div", "td", "tr", "table", "body", "html" ], "contextRef": "FD2017Q2YTD", "decimals": "-5", "first": true, "lang": null, "name": "aiz:PaymentsofExaminationComplianceandMonitoringCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } } }, "segmentCount": 159, "tag": { "aiz_A6.0CLONovember2017Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "6.0% CLO November 2017 [Member]", "label": "6.0% CLO November 2017 [Member]", "terseLabel": "6.0% CLO November 2017" } } }, "localname": "A6.0CLONovember2017Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_A9.4CLOApril2018Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "9.4% CLO April 2018 [Member]", "label": "9.4% CLO April 2018 [Member]", "terseLabel": "9.4% CLO April 2018" } } }, "localname": "A9.4CLOApril2018Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_AIZExcludingTWGMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "AIZ Excluding TWG [Member]", "label": "AIZ Excluding TWG [Member]", "terseLabel": "AIZ excluding TWG" } } }, "localname": "AIZExcludingTWGMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails" ], "xbrltype": "domainItemType" }, "aiz_AccountingStandardsUpdate201601And201409Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Accounting Standards Update 2016-01 And 2014-09 [Member]", "label": "Accounting Standards Update 2016-01 And 2014-09 [Member]", "terseLabel": "Accounting Standards Update 2016-01 and 2014-09" } } }, "localname": "AccountingStandardsUpdate201601And201409Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "aiz_AdjustmentstoAdditionalPaidinCapitalExerciseofStockOptions": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Adjustments to Additional Paid in Capital, Exercise of Stock Options", "label": "Adjustments to Additional Paid in Capital, Exercise of Stock Options", "terseLabel": "Stock plan exercises" } } }, "localname": "AdjustmentstoAdditionalPaidinCapitalExerciseofStockOptions", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "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/20180630", "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 relationship and renewal rights" } } }, "localname": "AgencyRelationshipsandRenewalRightsMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails" ], "xbrltype": "domainItemType" }, "aiz_AmortizationofDeferredGainsandGainsonDisposalofBusinesses": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 4.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 }, "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails": { "order": 4.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amortization of Deferred Gains and Gains on Disposal of Businesses", "label": "Amortization of Deferred Gains and Gains on Disposal of Businesses", "terseLabel": "Amortization of deferred gains on disposal of businesses", "verboseLabel": "Amortization of deferred gains and gains on disposal of businesses" } } }, "localname": "AmortizationofDeferredGainsandGainsonDisposalofBusinesses", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "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": "Percentage of residential mortgage-backed holdings exposure to sub-prime mortgage collateral" } } }, "localname": "ApproximatePercentageOutstandingPrincipalBalanceOfCommercialMortgageLoans", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "aiz_AssurantEmployeeBenefitsAEBMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assurant Employee Benefits (AEB)", "label": "Assurant Employee Benefits (AEB) [Member]", "netLabel": "AEB" } } }, "localname": "AssurantEmployeeBenefitsAEBMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "aiz_AssurantHealth1Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assurant Health1 [Member]", "label": "Assurant Health1 [Member]", "terseLabel": "Health" } } }, "localname": "AssurantHealth1Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "aiz_AssurantHealthMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assurant Health [Member]", "label": "Assurant Health [Member]", "verboseLabel": "Assurant Health" } } }, "localname": "AssurantHealthMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "domainItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityFairValueTotal": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtSecurities", "weight": 1.0 } }, "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, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityFairValueTotal", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 } }, "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, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "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/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_BusinessCombinationAcquisitionRelatedCostsIncurredtoDate": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Acquisition Related Costs, Incurred to Date", "label": "Business Combination, Acquisition Related Costs, Incurred to Date", "terseLabel": "Transaction costs, incurred to date" } } }, "localname": "BusinessCombinationAcquisitionRelatedCostsIncurredtoDate", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationEarnout": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Earn-out", "label": "Business Combination, Earn-out", "terseLabel": "Earn-out (up to)" } } }, "localname": "BusinessCombinationEarnout", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationIntegrationRelatedCostsIncurredtoDate": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Integration Related Costs, Incurred to Date", "label": "Business Combination, Integration Related Costs, Incurred to Date", "terseLabel": "Integration costs, incurred to date" } } }, "localname": "BusinessCombinationIntegrationRelatedCostsIncurredtoDate", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsEquitySecurities": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 2.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Equity Securities", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Equity Securities", "terseLabel": "Equity securities" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsEquitySecurities", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsOtherInvestments": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 4.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Investments", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Investments", "terseLabel": "Other investments" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsOtherInvestments", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsReinsuranceRecoverable": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 7.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Reinsurance Recoverable", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Reinsurance Recoverable", "terseLabel": "Reinsurance recoverables" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsReinsuranceRecoverable", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsShorttermInvestments": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 3.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Short-term Investments", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Short-term Investments", "terseLabel": "Short-term investments" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsShorttermInvestments", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesClaimsandBenefitsPayable": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 14.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Claims and Benefits Payable", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Claims and Benefits Payable", "negatedTerseLabel": "Claims and benefits payable" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesClaimsandBenefitsPayable", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesFundsHeldUnderReinsurance": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 16.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Funds Held Under Reinsurance", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Funds Held Under Reinsurance", "negatedTerseLabel": "Funds held under reinsurance" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesFundsHeldUnderReinsurance", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesReinsuranceBalancesPayable": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 15.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Reinsurance Balances Payable", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Reinsurance Balances Payable", "negatedTerseLabel": "Reinsurance balances payable" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesReinsuranceBalancesPayable", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesUnearnedPremiumsandContractFees": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 13.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Unearned Premiums and Contract Fees", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Unearned Premiums and Contract Fees", "negatedLabel": "Unearned premiums and contract fees" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesUnearnedPremiumsandContractFees", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "aiz_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedValueofBusinessAcquired": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 10.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Value of Business Acquired", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Value of Business Acquired", "terseLabel": "Value of business acquired" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedValueofBusinessAcquired", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "aiz_CEOandExecutiveOfficersMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "CEO and Executive Officers [Member]", "label": "CEO and Executive Officers [Member]", "terseLabel": "CEO and Executive Officers" } } }, "localname": "CEOandExecutiveOfficersMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "domainItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "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/20180630", "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/20180630", "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/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "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": "Discount rate" } } }, "localname": "DebtInstrumentDiscountRateStatedPercentage", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_DebtInstrumentNumberofSeries": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Debt Instrument, Number of Series", "label": "Debt Instrument, Number of Series", "terseLabel": "Number of series issued" } } }, "localname": "DebtInstrumentNumberofSeries", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "integerItemType" }, "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 gains on disposal of businesses" } } }, "localname": "DeferredGainOnDisposalOfBusinesses", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "aiz_DisposalGroupAmortizationofDeferredGainonDisposal": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposal Group, Amortization of Deferred Gain on Disposal", "label": "Disposal Group, Amortization of Deferred Gain on Disposal", "verboseLabel": "Amortization of deferred gains" } } }, "localname": "DisposalGroupAmortizationofDeferredGainonDisposal", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "aiz_DistributionNetworkMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Distribution Network [Member]", "label": "Distribution Network [Member]", "terseLabel": "Distribution network" } } }, "localname": "DistributionNetworkMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "domainItemType" }, "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/20180630", "xbrltype": "stringItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "domainItemType" }, "aiz_FinancialIndustrySectorMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Financial Industry Sector [Member]", "label": "Financial Industry Sector [Member]", "terseLabel": "Financial Services Sector" } } }, "localname": "FinancialIndustrySectorMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_ForeignGovernmentFixedMaturitySecuritiesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Foreign Government Fixed Maturity Securities [Member]", "label": "Foreign Government Fixed Maturity Securities [Member]", "terseLabel": "Foreign Government Fixed Maturity Securities" } } }, "localname": "ForeignGovernmentFixedMaturitySecuritiesMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_FundsHeldunderReinsuranceAgreementsLiabilityFairValueDisclosure": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 3.0, "parentTag": "us-gaap_LiabilitiesFairValueDisclosure", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Funds Held under Reinsurance Agreements, Liability, Fair Value Disclosure", "label": "Funds Held under Reinsurance Agreements, Liability, Fair Value Disclosure", "terseLabel": "Funds withheld under reinsurance" } } }, "localname": "FundsHeldunderReinsuranceAgreementsLiabilityFairValueDisclosure", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "aiz_GlobalHousingandGlobalLifestyleMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Global Housing and Global Lifestyle [Member]", "label": "Global Housing and Global Lifestyle [Member]", "terseLabel": "Global Housing and Global Lifestyle" } } }, "localname": "GlobalHousingandGlobalLifestyleMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "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/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/ContractRevenuesNarrativeDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails", "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "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/20180630", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "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 Insurance Agency, Inc." } } }, "localname": "GreenTreeInsuranceAgencyInc.Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails" ], "xbrltype": "domainItemType" }, "aiz_GuarantyExpense": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Guaranty Expense", "label": "Guaranty Expense", "terseLabel": "Expense related to Penn Treaty" } } }, "localname": "GuarantyExpense", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "aiz_HeldtomaturitySecuritiesIncreaseDecreaseInCarryingValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Held-to-maturity Securities, Increase (Decrease) In Carrying Value", "label": "Held-to-maturity Securities, Increase (Decrease) In Carrying Value", "terseLabel": "Increase (decrease) in carrying value" } } }, "localname": "HeldtomaturitySecuritiesIncreaseDecreaseInCarryingValue", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "monetaryItemType" }, "aiz_IncomeTaxExpenseBenefitChangeInEstimate": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Income Tax Expense (Benefit) Change In Estimate", "label": "Income Tax Expense (Benefit) Change In Estimate", "negatedLabel": "Provision (benefit) for income taxes" } } }, "localname": "IncomeTaxExpenseBenefitChangeInEstimate", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails" ], "xbrltype": "monetaryItemType" }, "aiz_InitialDividendMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Initial Dividend [Member]", "label": "Initial Dividend [Member]", "terseLabel": "Initial dividend" } } }, "localname": "InitialDividendMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_InterestRateAdjustmentTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "[Table Text Block] for Interest Rate Adjustment [Table] details the increase in interest rate over the issuance rate by rating with the impact equal to the sum of the number of basis points next to such rating.", "label": "Interest Rate Adjustment [Table Text Block]", "terseLabel": "Schedule of Credit Rating Agencies interest rates" } } }, "localname": "InterestRateAdjustmentTableTextBlock", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtTables" ], "xbrltype": "textBlockItemType" }, "aiz_InterestRateDerivativesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Interest Rate Derivatives [Member]", "label": "Interest Rate Derivatives [Member]", "terseLabel": "Interest Rate Derivatives" } } }, "localname": "InterestRateDerivativesMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "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/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "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 And Bank Of America N" } } }, "localname": "JpMorganChaseBankNAndBankOfAmericaNMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "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/20180630", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationLongTermEquityIncentivePlansDetails", "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "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/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "stringItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_MoodysB1OrBelowMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Moody's, B1 Or Below [Member]", "label": "Moody's, B1 Or Below [Member]", "terseLabel": "B1 or below" } } }, "localname": "MoodysB1OrBelowMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "domainItemType" }, "aiz_MortgageSolutionsBusinessMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Mortgage Solutions Business [Member]", "label": "Mortgage Solutions Business [Member]", "terseLabel": "Mortgage Solutions Business" } } }, "localname": "MortgageSolutionsBusinessMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DispositionsDetails" ], "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" } } }, "localname": "NumberOfAvailableForSaleSecuritiesComprisingGrossUnrealizedLoss", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "integerItemType" }, "aiz_NumberofIndividualStatesWithExposureExceedingOverallPortfolioThreshold": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of Individual States With Exposure Exceeding Overall Portfolio Threshold", "label": "Number of Individual States With Exposure Exceeding Overall Portfolio Threshold", "terseLabel": "Number of individual states exceeding overall investment portfolio exposure" } } }, "localname": "NumberofIndividualStatesWithExposureExceedingOverallPortfolioThreshold", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "integerItemType" }, "aiz_OtherCountriesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other Countries [Member]", "label": "Other Countries [Member]", "terseLabel": "Other Countries (more than 3%)" } } }, "localname": "OtherCountriesMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_OtherDerivativesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other Derivatives [Member]", "label": "Other Derivatives [Member]", "terseLabel": "Other assets" } } }, "localname": "OtherDerivativesMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "aiz_OtherIntangibleAssetsNetExcludingGoodwill": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Other Intangible Assets, Net (Excluding Goodwill)", "label": "Other Intangible Assets, Net (Excluding Goodwill)", "terseLabel": "Total other intangible assets" } } }, "localname": "OtherIntangibleAssetsNetExcludingGoodwill", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "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/20180630", "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/20180630", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "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/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "stringItemType" }, "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 of examination, compliance, and monitoring costs" } } }, "localname": "PaymentsofExaminationComplianceandMonitoringCosts", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_PaymentstoAcquireBusinessesIncludingRepaymentofPreExistingDebt": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Payments to Acquire Businesses, Including Repayment of Pre-Existing Debt", "label": "Payments to Acquire Businesses, Including Repayment of Pre-Existing Debt", "terseLabel": "Payments to Acquire Businesses, Including Repayment of Pre-Existing Debt" } } }, "localname": "PaymentstoAcquireBusinessesIncludingRepaymentofPreExistingDebt", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_PercentOfTotalRevenue": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percent Of Total Revenue", "label": "Percent Of Total Revenue", "terseLabel": "Percentage of total revenue" } } }, "localname": "PercentOfTotalRevenue", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "percentItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "percentItemType" }, "aiz_PercentageOfRevenueFromContractWithCustomers": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage Of Revenue From Contract With Customers", "label": "Percentage Of Revenue From Contract With Customers", "terseLabel": "Percentage of revenue from contract with customers" } } }, "localname": "PercentageOfRevenueFromContractWithCustomers", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "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/20180630", "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": "Qualified Pension Plan - Plan 1" } } }, "localname": "Plan1Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "domainItemType" }, "aiz_Plan2Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Plan 2 [Member]", "label": "Plan 2 [Member]", "terseLabel": "Qualified Pension Plan - Plan 2" } } }, "localname": "Plan2Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "domainItemType" }, "aiz_PolicyReservesUnderInvestmentProductsFairValueDisclosure": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesFairValueDisclosure", "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": "Policy reserves under investment products (Individual and group annuities, subject to discretionary withdrawal)" } } }, "localname": "PolicyReservesUnderInvestmentProductsFairValueDisclosure", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "aiz_ProceedsfromSalesandRedemptionsofInvestmentsbySpecialPurposeEntities": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 15.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow associated with sales, maturities, prepayments and redemptions of investments by special purpose entities", "label": "Proceeds from Sales and Redemptions of Investments by Special Purpose Entities", "terseLabel": "Sale of investments" } } }, "localname": "ProceedsfromSalesandRedemptionsofInvestmentsbySpecialPurposeEntities", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "aiz_ProtectionProductsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Protection Products [Member]", "label": "Protection Products [Member]", "terseLabel": "Protection products" } } }, "localname": "ProtectionProductsMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_PsuMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "PSU [Member]", "label": "Psu [Member]", "terseLabel": "PSUs" } } }, "localname": "PsuMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "domainItemType" }, "aiz_PurchasesofInvestmentsbySpecialPurposeEntities": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 14.0, "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/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "stringItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "stringItemType" }, "aiz_SeniorNotes2018Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2018 [Member]", "label": "Senior Notes 2018 [Member]", "terseLabel": "Senior Notes 2018" } } }, "localname": "SeniorNotes2018Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_SeniorNotes2021Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2021 [Member]", "label": "Senior Notes 2021 [Member]", "terseLabel": "Senior Notes 2021" } } }, "localname": "SeniorNotes2021Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_SeniorNotes2023Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2023 [Member]", "label": "Senior Notes 2023 [Member]", "terseLabel": "Senior Notes 2023" } } }, "localname": "SeniorNotes2023Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_SeniorNotes2028Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2028 [Member]", "label": "Senior Notes 2028 [Member]", "terseLabel": "Senior Notes 2028" } } }, "localname": "SeniorNotes2028Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_SeniorNotes2034Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Senior Notes 2034 [Member]", "label": "Senior Notes 2034 [Member]", "terseLabel": "Senior Notes 2034" } } }, "localname": "SeniorNotes2034Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_ServiceContractsAndSalesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Service Contracts And Sales [Member]", "label": "Service Contracts And Sales [Member]", "terseLabel": "Service contracts and sales" } } }, "localname": "ServiceContractsAndSalesMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_SpecialPurposeEntitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Special Purpose Entities [Abstract]", "label": "Special Purpose Entities [Abstract]", "terseLabel": "Consolidated investment entities" } } }, "localname": "SpecialPurposeEntitiesAbstract", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "stringItemType" }, "aiz_SpecialPurposeEntityProceedsFromIssuanceOfLongTermDebt": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 6.0, "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/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "aiz_SpecialPurposeEntityRepaymentsofDebt": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 12.0, "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", "negatedLabel": "Repayment of debt for consolidated investment entities" } } }, "localname": "SpecialPurposeEntityRepaymentsofDebt", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "aiz_StandardPoorsBPlusOrBelowMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Standard & Poor's, B Plus Or Below [Member]", "label": "Standard & Poor's, B Plus Or Below [Member]", "terseLabel": "B Plus Or Below" } } }, "localname": "StandardPoorsBPlusOrBelowMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "domainItemType" }, "aiz_SubordinatedNotes2048Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Subordinated Notes 2048 [Member]", "label": "Subordinated Notes 2048 [Member]", "terseLabel": "Subordinated Notes 2048" } } }, "localname": "SubordinatedNotes2048Member", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_SubsequentDividendsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Subsequent Dividends [Member]", "label": "Subsequent Dividends [Member]", "terseLabel": "Subsequent dividends" } } }, "localname": "SubsequentDividendsMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_TWGHoldingsLimitedMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "TWG Holdings Limited [Member]", "label": "TWG Holdings Limited [Member]", "terseLabel": "TWG Holdings Limited" } } }, "localname": "TWGHoldingsLimitedMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails", "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails", "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails", "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "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)", "terseLabel": "TCJA, Tax expense (benefit)" } } }, "localname": "TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails" ], "xbrltype": "monetaryItemType" }, "aiz_TheNotesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Combination of the Subordinated Notes and the Senior Notes (which is comprised of the 2021 Senior Notes, 2023 Senior Notes and 2028 Senior Notes).", "label": "The Notes [Member]", "terseLabel": "The Notes" } } }, "localname": "TheNotesMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "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/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "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 and Other" } } }, "localname": "TotalCorporateAndOtherMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "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/20180630", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "aiz_VOBAMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "VOBA [Member]", "label": "VOBA [Member]", "terseLabel": "VOBA" } } }, "localname": "VOBAMember", "nsuri": "http://www.assurant.com/20180630", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "domainItemType" }, "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/20180630", "xbrltype": "stringItemType" }, "aiz_VariableInterestEntityConsolidatedAssetsCash": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical": { "order": 1.0, "parentTag": "us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets", "weight": 1.0 } }, "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/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityConsolidatedAssetsInvestmentsAtFairValue": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical": { "order": 2.0, "parentTag": "us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets", "weight": 1.0 } }, "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/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityConsolidatedAssetsOtherReceivables": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical": { "order": 3.0, "parentTag": "us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets", "weight": 1.0 } }, "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/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityConsolidatedLiabilitiesCollateralizedLoanObligationNotesAtFairValue": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical": { "order": 1.0, "parentTag": "us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities", "weight": 1.0 } }, "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/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "aiz_VariableInterestEntityConsolidatedLiabilitiesOtherLiabilities": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical": { "order": 2.0, "parentTag": "us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities", "weight": 1.0 } }, "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/20180630", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "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/20180630", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "country_BR": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "BRAZIL", "terseLabel": "Brazil" } } }, "localname": "BR", "nsuri": "http://xbrl.sec.gov/country/2017-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "country_CA": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "CANADA", "terseLabel": "Canada" } } }, "localname": "CA", "nsuri": "http://xbrl.sec.gov/country/2017-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "country_DE": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "GERMANY", "terseLabel": "Germany" } } }, "localname": "DE", "nsuri": "http://xbrl.sec.gov/country/2017-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "country_GB": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "UNITED KINGDOM", "terseLabel": "United Kingdom" } } }, "localname": "GB", "nsuri": "http://xbrl.sec.gov/country/2017-01-31", "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/2018-01-31", "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/2018-01-31", "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/2018-01-31", "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/2018-01-31", "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/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "submissionTypeItemType" }, "dei_EntityCentralIndexKey": { "auth_ref": [ "r516" ], "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/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "sharesItemType" }, "dei_EntityFilerCategory": { "auth_ref": [ "r516" ], "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), (5) Smaller Reporting Accelerated Filer or (6) Smaller Reporting Company and Large 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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "filerCategoryItemType" }, "dei_EntityRegistrantName": { "auth_ref": [ "r516" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "invest_InvestmentGeographicRegionAxis": { "auth_ref": [ "r517" ], "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": [ "r517" ], "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": [ "r518" ], "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": [ "r517" ], "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" } } }, "localname": "InvestmentSectorAxis", "nsuri": "http://xbrl.sec.gov/invest/2013-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "invest_InvestmentSectorDomain": { "auth_ref": [ "r517" ], "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": [ "r519" ], "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" }, "srt_CreditRatingMoodysAxis": { "auth_ref": [ "r161", "r234", "r368" ], "lang": { "en-US": { "role": { "label": "Credit Rating, Moody's [Axis]", "terseLabel": "Credit Rating, Moody's [Axis]" } } }, "localname": "CreditRatingMoodysAxis", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "stringItemType" }, "srt_CreditRatingStandardPoorsAxis": { "auth_ref": [ "r161", "r234", "r368" ], "lang": { "en-US": { "role": { "label": "Credit Rating, Standard & Poor's [Axis]", "terseLabel": "Credit Rating, Standard & Poor's [Axis]" } } }, "localname": "CreditRatingStandardPoorsAxis", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "stringItemType" }, "srt_EuropeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Europe [Member]", "terseLabel": "Europe" } } }, "localname": "EuropeMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_ExternalCreditRatingMoodysMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "External Credit Rating, Moody's [Domain]", "terseLabel": "External Credit Rating, Moody's [Domain]" } } }, "localname": "ExternalCreditRatingMoodysMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "domainItemType" }, "srt_ExternalCreditRatingStandardPoorsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "External Credit Rating, Standard & Poor's [Domain]", "terseLabel": "External Credit Rating, Standard & Poor's [Domain]" } } }, "localname": "ExternalCreditRatingStandardPoorsMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "domainItemType" }, "srt_MaximumMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Maximum [Member]", "terseLabel": "Maximum" } } }, "localname": "MaximumMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_MinimumMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Minimum [Member]", "terseLabel": "Minimum" } } }, "localname": "MinimumMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_MoodysBa1RatingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Moody's, Ba1 Rating [Member]", "terseLabel": "Ba1" } } }, "localname": "MoodysBa1RatingMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "domainItemType" }, "srt_MoodysBa2RatingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Moody's, Ba2 Rating [Member]", "terseLabel": "Ba2" } } }, "localname": "MoodysBa2RatingMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "domainItemType" }, "srt_MoodysBa3RatingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Moody's, Ba3 Rating [Member]", "terseLabel": "Ba3" } } }, "localname": "MoodysBa3RatingMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "domainItemType" }, "srt_ProductOrServiceAxis": { "auth_ref": [ "r159", "r260", "r263", "r500" ], "lang": { "en-US": { "role": { "label": "Product and Service [Axis]", "terseLabel": "Product and Service [Axis]" } } }, "localname": "ProductOrServiceAxis", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "stringItemType" }, "srt_ProductsAndServicesDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Product and Service [Domain]", "terseLabel": "Product and Service [Domain]" } } }, "localname": "ProductsAndServicesDomain", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_RangeAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Range [Axis]", "terseLabel": "Range [Axis]" } } }, "localname": "RangeAxis", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "srt_RangeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Range [Domain]", "terseLabel": "Range [Domain]" } } }, "localname": "RangeMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_StandardPoorsBBMinusRatingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Standard & Poor's, BB- Rating [Member]", "terseLabel": "BB-" } } }, "localname": "StandardPoorsBBMinusRatingMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "domainItemType" }, "srt_StandardPoorsBBPlusRatingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Standard & Poor's, BB+ Rating [Member]", "terseLabel": "BB Plus" } } }, "localname": "StandardPoorsBBPlusRatingMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "domainItemType" }, "srt_StandardPoorsBBRatingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Standard & Poor's, BB Rating [Member]", "terseLabel": "BB" } } }, "localname": "StandardPoorsBBRatingMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "domainItemType" }, "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": "Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]" } } }, "localname": "AOCIAttributableToParentNetOfTaxRollForward", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccountingStandardsUpdate201409Member": { "auth_ref": [ "r265" ], "lang": { "en-US": { "role": { "documentation": "Accounting Standards Update 2014-09 Revenue from Contracts with Customers (Topic 606).", "label": "Accounting Standards Update 2014-09 [Member]", "terseLabel": "ASU 2014-09" } } }, "localname": "AccountingStandardsUpdate201409Member", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccountingStandardsUpdate201601Member": { "auth_ref": [ "r391" ], "lang": { "en-US": { "role": { "documentation": "Accounting Standards Update 2016-01 Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.", "label": "Accounting Standards Update 2016-01 [Member]", "terseLabel": "ASU 2016-01" } } }, "localname": "AccountingStandardsUpdate201601Member", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent": { "auth_ref": [ "r421", "r474" ], "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" } } }, "localname": "AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccruedInvestmentIncomeReceivable": { "auth_ref": [ "r28", "r410", "r461" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "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" } } }, "localname": "AccruedInvestmentIncomeReceivable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccruedSalesCommissionCurrentAndNoncurrent": { "auth_ref": [ "r22", "r24", "r413", "r455" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember": { "auth_ref": [ "r57", "r64", "r66", "r280", "r349" ], "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": "Unamortized net (losses) on Pension Plans" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember": { "auth_ref": [ "r59", "r64", "r66", "r279", "r349" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive (income) loss related to prior service cost (credit) component of defined benefit plans attributable to the parent.", "label": "Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]", "verboseLabel": "Settlement gain" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember": { "auth_ref": [ "r56", "r64", "r66", "r279", "r349" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive income (loss) related to gain (loss) component of defined benefit plans attributable to the parent.", "label": "Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]", "terseLabel": "Amortization of net loss" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember": { "auth_ref": [ "r64", "r73", "r348" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive income (loss) from gain (loss) of derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.", "label": "Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]", "terseLabel": "Net unrealized gains on derivative transactions" } } }, "localname": "AccumulatedGainLossNetCashFlowHedgeParentMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember": { "auth_ref": [ "r51", "r64", "r66", "r349" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive income (loss) resulting from gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges, including the portion attributable to the noncontrolling interest.", "label": "Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]", "terseLabel": "Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]" } } }, "localname": "AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember": { "auth_ref": [ "r52", "r53", "r55", "r64", "r66" ], "lang": { "en-US": { "role": { "documentation": "Accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), attributable to parent.", "label": "Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]", "terseLabel": "Net unrealized gains on securities" } } }, "localname": "AccumulatedNetUnrealizedInvestmentGainLossMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r61", "r63", "r64" ], "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 (loss) income" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "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/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeMember": { "auth_ref": [ "r60", "r64", "r66", "r349" ], "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" } } }, "localname": "AccumulatedOtherComprehensiveIncomeMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedOtherThanTemporaryImpairmentMember": { "auth_ref": [ "r54", "r64", "r66", "r168", "r349" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedTranslationAdjustmentMember": { "auth_ref": [ "r50", "r64", "r66", "r349" ], "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 parent.", "label": "Accumulated Foreign Currency Adjustment Attributable to Parent [Member]", "terseLabel": "Foreign currency translation adjustment" } } }, "localname": "AccumulatedTranslationAdjustmentMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife": { "auth_ref": [ "r206" ], "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": "Amortizable period", "verboseLabel": "Estimated useful lives (in years)" } } }, "localname": "AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails" ], "xbrltype": "durationItemType" }, "us-gaap_AcquisitionRelatedCostsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Category of acquisition-related costs allocated to (included in) reported pro forma earnings (supplemental pro forma information).", "label": "Acquisition-related Costs [Member]", "terseLabel": "Acquisition-related Costs" } } }, "localname": "AcquisitionRelatedCostsMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AdditionalPaidInCapitalCommonStock": { "auth_ref": [ "r29" ], "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" } } }, "localname": "AdditionalPaidInCapitalCommonStock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_AdjustmentsForNewAccountingPronouncementsAxis": { "auth_ref": [ "r119" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue": { "auth_ref": [ "r295", "r297", "r308", "r309" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation.", "label": "Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition", "terseLabel": "Stock plan compensation" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllocatedShareBasedCompensationExpense": { "auth_ref": [ "r297", "r303", "r307" ], "calculation": { "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails": { "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", "verboseLabel": "Compensation expense" } } }, "localname": "AllocatedShareBasedCompensationExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails": { "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": "Compensation expense, net of tax" } } }, "localname": "AllocatedShareBasedCompensationExpenseNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AmortizationOfIntangibleAssets": { "auth_ref": [ "r105", "r204", "r212" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AmortizationOfValueOfBusinessAcquiredVOBA": { "auth_ref": [ "r105", "r442" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The adjustment that represents the periodic charge against earnings to reduce the value of business acquired (VOBA) over the expected life of the underlying insurance contracts. VOBA reflects the estimated fair value of a life insurance business in force and represents the portion of the cost to acquire the business that is allocated to the value of the right to receive future cash flows from insurance contracts existing at the date of acquisition. Such value is the present value of the actuarially determined projected cash flows for the acquired policies. 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 Value of Business Acquired (VOBA)", "terseLabel": "Amortization of Value of Business Acquired (VOBA)" } } }, "localname": "AmortizationOfValueOfBusinessAcquiredVOBA", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount": { "auth_ref": [ "r139" ], "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 computation of diluted EPS (in shares)" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis": { "auth_ref": [ "r139" ], "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/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AntidilutiveSecuritiesNameDomain": { "auth_ref": [ "r139" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AssetBackedSecuritiesMember": { "auth_ref": [ "r183", "r272" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Assets": { "auth_ref": [ "r154", "r411", "r451" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "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", "terseLabel": "Segment assets", "totalLabel": "Total assets" } } }, "localname": "Assets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsFairValueDisclosure": { "auth_ref": [ "r371" ], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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": "Total financial assets", "totalLabel": "Total financial assets" } } }, "localname": "AssetsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax": { "auth_ref": [ "r173" ], "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 investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax", "terseLabel": "Fixed maturity securities, gross unrealized gains" } } }, "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax": { "auth_ref": [ "r174" ], "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 investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax", "negatedLabel": "Fixed maturity securities, gross unrealized losses" } } }, "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis": { "auth_ref": [ "r171" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Amortized Cost", "terseLabel": "Fixed maturity securities available for sale, amortized cost", "totalLabel": "Fixed maturity securities, cost or amortized cost" } } }, "localname": "AvailableForSaleDebtSecuritiesAmortizedCostBasis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": 3.0, "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": "Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax" } } }, "localname": "AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax": { "auth_ref": [], "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", "negatedTerseLabel": "Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax" } } }, "localname": "AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "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, cost or amortized cost" } } }, "localname": "AvailableForSaleEquitySecuritiesAmortizedCostBasis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecurities": { "auth_ref": [], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "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": "Available-for-sale securities, 12 Months or More, Unrealized Losses" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss": { "auth_ref": [ "r187" ], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "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": "Available-for-sale securities, Total, Unrealized Losses" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "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": "Available-for-sale securities, Total, Fair Value" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "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": "Available-for-sale securities, Less than 12 Months, Unrealized Losses" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "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 less than twelve months.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value", "terseLabel": "Available-for-sale securities, Less than 12 Months, Fair Value" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "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 twelve months or longer.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value", "terseLabel": "Available-for-sale securities, 12 Months or More, Fair Value" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost": { "auth_ref": [ "r179" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 1.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth fiscal year through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost", "terseLabel": "Due after five years through ten years, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": { "auth_ref": [ "r175", "r179", "r435" ], "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 investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value", "terseLabel": "Due after five years through ten years, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost": { "auth_ref": [ "r178" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 2.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost", "terseLabel": "Due after one year through five years, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": { "auth_ref": [ "r175", "r178", "r434" ], "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 investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value", "terseLabel": "Due after one year through five years, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost": { "auth_ref": [ "r180" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 3.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost", "terseLabel": "Due after ten years, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue": { "auth_ref": [ "r175", "r180", "r436" ], "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 investment in debt security, measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value", "terseLabel": "Due after ten years, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost": { "auth_ref": [ "r177" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 4.0, "parentTag": "aiz_AvailableForSaleSecuritiesDebtMaturitiesContractualMaturityTotal", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost", "terseLabel": "Due in one year or less, cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue": { "auth_ref": [ "r175", "r177", "r433" ], "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 investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value", "terseLabel": "Due in one year or less, fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost": { "auth_ref": [ "r181" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), without single maturity date and not allocated over maturity grouping.", "label": "Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost", "terseLabel": "Cost or amortized cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue": { "auth_ref": [ "r181" ], "calculation": { "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtSecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), without single maturity date and not allocated over maturity grouping.", "label": "Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value", "terseLabel": "Fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtSecurities": { "auth_ref": [ "r165", "r172" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Investments", "weight": 1.0 }, "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": 3.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale", "netLabel": "Fixed maturity securities, fair value", "terseLabel": "Fixed maturity securities available for sale, at fair value (amortized cost - $10,777.0 in 2018 and $8,756.5 in 2017)", "totalLabel": "Total fair value", "verboseLabel": "Investment in securities" } } }, "localname": "AvailableForSaleSecuritiesDebtSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesEquitySecurities": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 6.0, "parentTag": "us-gaap_Investments", "weight": 1.0 }, "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis", "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", "terseLabel": "Equity securities, fair value", "verboseLabel": "Equity securities, at fair value (cost - $349.6 in 2018 and $316.3 in 2017)" } } }, "localname": "AvailableForSaleSecuritiesEquitySecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AwardTypeAxis": { "auth_ref": [ "r298", "r306" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BasisOfAccounting": { "auth_ref": [ "r118" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the 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 [Text Block]", "terseLabel": "Basis of Presentation" } } }, "localname": "BasisOfAccounting", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/BasisOfPresentation" ], "xbrltype": "textBlockItemType" }, "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]", "terseLabel": "Basis of Presentation" } } }, "localname": "BasisOfAccountingPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/BasisOfPresentationPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_BenefitsLossesAndExpenses": { "auth_ref": [ "r485" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 1.0, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "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" } } }, "localname": "BenefitsLossesAndExpensesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails", "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails", "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails", "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "domainItemType" }, "us-gaap_BusinessAcquisitionAxis": { "auth_ref": [ "r324", "r325" ], "lang": { "en-US": { "role": { "documentation": "Information by business combination or series of individually immaterial business combinations.", "label": "Business Acquisition [Axis]", "terseLabel": "Business Acquisition [Axis]", "verboseLabel": "Business Acquisition [Axis]" } } }, "localname": "BusinessAcquisitionAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails", "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails", "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails", "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued": { "auth_ref": [ "r337" ], "lang": { "en-US": { "role": { "documentation": "Number of shares of equity interests issued or issuable to acquire entity.", "label": "Business Acquisition, Equity Interest Issued or Issuable, Number of Shares", "terseLabel": "Common stock shares issued to TWG equityholders" } } }, "localname": "BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical" ], "xbrltype": "sharesItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails", "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails", "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired": { "auth_ref": [ "r319" ], "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": "Percentage of outstanding common stock acquired", "verboseLabel": "Acquisition percentage" } } }, "localname": "BusinessAcquisitionPercentageOfVotingInterestsAcquired", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails" ], "xbrltype": "percentItemType" }, "us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic": { "auth_ref": [ "r321", "r322" ], "lang": { "en-US": { "role": { "documentation": "The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.", "label": "Business Acquisition, Pro Forma Earnings Per Share, Basic", "terseLabel": "Basic earnings per share (in dollars per share)" } } }, "localname": "BusinessAcquisitionProFormaEarningsPerShareBasic", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted": { "auth_ref": [ "r321", "r322" ], "lang": { "en-US": { "role": { "documentation": "The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.", "label": "Business Acquisition, Pro Forma Earnings Per Share, Diluted", "terseLabel": "Diluted earnings per share (in dollars per share)" } } }, "localname": "BusinessAcquisitionProFormaEarningsPerShareDiluted", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_BusinessAcquisitionProFormaInformationTextBlock": { "auth_ref": [ "r321", "r322" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate.", "label": "Business Acquisition, Pro Forma Information [Table Text Block]", "terseLabel": "Business Acquisition, Pro Forma Information" } } }, "localname": "BusinessAcquisitionProFormaInformationTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount": { "auth_ref": [ "r338" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessAcquisitionSharePrice": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.", "label": "Business Acquisition, Share Price", "terseLabel": "Volume weighted average common share price of Assurant, Inc. on May 31, 2018" } } }, "localname": "BusinessAcquisitionSharePrice", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss": { "auth_ref": [ "r321", "r322" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.", "label": "Business Acquisition, Pro Forma Net Income (Loss)", "terseLabel": "Net income" } } }, "localname": "BusinessAcquisitionsProFormaNetIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessAcquisitionsProFormaRevenue": { "auth_ref": [ "r321", "r322" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.", "label": "Business Acquisition, Pro Forma Revenue", "terseLabel": "Total revenues" } } }, "localname": "BusinessAcquisitionsProFormaRevenue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue": { "auth_ref": [ "r328" ], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 18.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.", "label": "Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value", "negatedTerseLabel": "Non-controlling interest" } } }, "localname": "BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationAcquisitionRelatedCosts": { "auth_ref": [ "r318" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.", "label": "Business Combination, Acquisition Related Costs", "terseLabel": "Transaction costs", "verboseLabel": "Pro forma net income, nonrecurring transaction and integration costs, net of taxes" } } }, "localname": "BusinessCombinationAcquisitionRelatedCosts", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails", "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationConsiderationTransferred1": { "auth_ref": [ "r332", "r333", "r334" ], "calculation": { "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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": "Total acquisition consideration", "totalLabel": "Total acquisition consideration" } } }, "localname": "BusinessCombinationConsiderationTransferred1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable": { "auth_ref": [ "r332", "r333" ], "calculation": { "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails": { "order": 1.0, "parentTag": "us-gaap_BusinessCombinationConsiderationTransferred1", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.", "label": "Business Combination, Consideration Transferred, Equity Interests Issued and Issuable", "terseLabel": "Share issuance consideration" } } }, "localname": "BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred": { "auth_ref": [ "r331", "r332", "r333", "r336" ], "calculation": { "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails": { "order": 3.0, "parentTag": "us-gaap_BusinessCombinationConsiderationTransferred1", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.", "label": "Business Combination, Consideration Transferred, Liabilities Incurred", "terseLabel": "Repayment of pre-existing TWG debt" } } }, "localname": "BusinessCombinationConsiderationTransferredLiabilitiesIncurred", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationDisclosureTextBlock": { "auth_ref": [ "r339" ], "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]", "verboseLabel": "Acquisitions" } } }, "localname": "BusinessCombinationDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/Acquisitions" ], "xbrltype": "textBlockItemType" }, "us-gaap_BusinessCombinationIntegrationRelatedCosts": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.", "label": "Business Combination, Integration Related Costs", "terseLabel": "Integration costs" } } }, "localname": "BusinessCombinationIntegrationRelatedCosts", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual": { "auth_ref": [ "r320" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.", "label": "Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual", "terseLabel": "Net income" } } }, "localname": "BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual": { "auth_ref": [ "r320" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.", "label": "Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual", "terseLabel": "Total revenues" } } }, "localname": "BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets": { "auth_ref": [ "r327" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of assets acquired at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets", "terseLabel": "Value of business acquired" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents": { "auth_ref": [ "r327" ], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 5.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "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, acquired at the acquisition date. 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": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents", "terseLabel": "Cash and cash equivalents", "verboseLabel": "Business combinations, cash acquired" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities": { "auth_ref": [ "r327" ], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 1.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities", "terseLabel": "Fixed maturity securities available for sale" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables": { "auth_ref": [ "r327" ], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 6.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables", "terseLabel": "Premiums and accounts receivable, net" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable": { "auth_ref": [ "r327" ], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 17.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable", "negatedTerseLabel": "Accounts payable and other liabilities" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialAssets": { "auth_ref": [ "r326", "r327", "r392" ], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 8.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of financial assets (as defined) recognized as of the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets", "terseLabel": "Accrued investment income" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets": { "auth_ref": [ "r327" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets", "terseLabel": "Indefinite-lived intangible assets" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill": { "auth_ref": [ "r327" ], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 11.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "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": "Other intangible assets" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles": { "auth_ref": [ "r326", "r327" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities": { "auth_ref": [ "r327" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet": { "auth_ref": [ "r326", "r327" ], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net", "totalLabel": "Total identifiable net assets acquired" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets": { "auth_ref": [ "r327" ], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 12.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets", "terseLabel": "Other assets" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment": { "auth_ref": [ "r326", "r327" ], "calculation": { "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails": { "order": 9.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of property, plant, and equipment recognized as of the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment", "terseLabel": "Property and equipment" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Business Combinations [Abstract]" } } }, "localname": "BusinessCombinationsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_CarryingReportedAmountFairValueDisclosureMember": { "auth_ref": [ "r387", "r388" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CashAndCashEquivalentsAtCarryingValue": { "auth_ref": [ "r14", "r35", "r107" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease": { "auth_ref": [], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashEquivalentsMember": { "auth_ref": [ "r15" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CashMember": { "auth_ref": [ "r15" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CatastrophicEventDomain": { "auth_ref": [ "r229", "r230" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ChiefExecutiveOfficerMember": { "auth_ref": [ "r401" ], "lang": { "en-US": { "role": { "documentation": "Highest ranking executive officer, who has ultimate managerial responsibility for the entity and who reports to the board of directors. In addition, the chief executive officer (CEO) may also be the chairman of the board or president.", "label": "Chief Executive Officer [Member]", "terseLabel": "Chief Executive Officer" } } }, "localname": "ChiefExecutiveOfficerMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ClassOfStockDisclosuresAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Class of Stock Disclosures [Abstract]" } } }, "localname": "ClassOfStockDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "http://www.assurant.com/role/DebtNarrativeDetails", "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ClassificationOfVariableInterestEntityDomain": { "auth_ref": [ "r351", "r352", "r354", "r355" ], "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/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommercialMortgageBackedSecuritiesMember": { "auth_ref": [ "r181", "r272" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommitmentsAndContingencies": { "auth_ref": [ "r43", "r229", "r423", "r464" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "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", "verboseLabel": "Commitments and contingencies (Note 18)" } } }, "localname": "CommitmentsAndContingencies", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "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/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": { "auth_ref": [ "r228", "r231" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingencies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommonStockDividendsPerShareCashPaid": { "auth_ref": [ "r249" ], "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 of common stock (in dollars per share)" } } }, "localname": "CommonStockDividendsPerShareCashPaid", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Stock that is subordinate to all other stock of the issuer.", "label": "Common Stock [Member]", "terseLabel": "Common Stock" } } }, "localname": "CommonStockMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockParOrStatedValuePerShare": { "auth_ref": [ "r27" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockSharesAuthorized": { "auth_ref": [ "r27" ], "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)" } } }, "localname": "CommonStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesIssued": { "auth_ref": [ "r27" ], "lang": { "en-US": { "role": { "documentation": "Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.", "label": "Common Stock, Shares, Issued", "terseLabel": "Common Stock, Shares, Issued" } } }, "localname": "CommonStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesOutstanding": { "auth_ref": [ "r27", "r242" ], "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", "terseLabel": "Common stock, shares outstanding (in shares)" } } }, "localname": "CommonStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockValue": { "auth_ref": [ "r27" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 6.0, "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", "verboseLabel": "Common stock, par value $0.01 per share, 800,000,000 shares authorized, 161,069,104 and 150,392,604 shares issued and 63,094,312 and 52,417,812 shares outstanding at June 30, 2018 and December 31, 2017, respectively" } } }, "localname": "CommonStockValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNetOfTax": { "auth_ref": [ "r69", "r71", "r72" ], "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", "terseLabel": "Total comprehensive (loss) income" } } }, "localname": "ComprehensiveIncomeNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNoteTextBlock": { "auth_ref": [ "r86" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncome" ], "xbrltype": "textBlockItemType" }, "us-gaap_ConcentrationRiskBenchmarkDomain": { "auth_ref": [ "r145", "r146", "r389", "r390" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ConcentrationRiskByBenchmarkAxis": { "auth_ref": [ "r145", "r146", "r389", "r390", "r507" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ConcentrationRiskByTypeAxis": { "auth_ref": [ "r145", "r146", "r389", "r390", "r507" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ConcentrationRiskPercentage1": { "auth_ref": [ "r145", "r146", "r389", "r390" ], "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 investments held" } } }, "localname": "ConcentrationRiskPercentage1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ConcentrationRiskTypeDomain": { "auth_ref": [ "r145", "r146", "r389", "r390" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ContractWithCustomerAssetNet": { "auth_ref": [ "r255", "r257", "r261" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.", "label": "Contract with Customer, Asset, Net", "terseLabel": "Receivables from contracts with customers" } } }, "localname": "ContractWithCustomerAssetNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ContractWithCustomerLiability": { "auth_ref": [ "r255", "r256", "r261" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.", "label": "Contract with Customer, Liability", "terseLabel": "Unearned revenue from contracts with customers" } } }, "localname": "ContractWithCustomerLiability", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ContractWithCustomerLiabilityRevenueRecognized": { "auth_ref": [ "r262" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.", "label": "Contract with Customer, Liability, Revenue Recognized", "terseLabel": "Contract with customer, liability, revenue recognized" } } }, "localname": "ContractWithCustomerLiabilityRevenueRecognized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ConversionOfStockSharesConverted1": { "auth_ref": [ "r109", "r110", "r111" ], "lang": { "en-US": { "role": { "documentation": "The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. \"Part noncash\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.", "label": "Conversion of Stock, Shares Converted", "terseLabel": "Stock conversion ratio (in shares)" } } }, "localname": "ConversionOfStockSharesConverted1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CorporateAndOtherMember": { "auth_ref": [ "r148" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CorporateDebtSecuritiesMember": { "auth_ref": [ "r272", "r292" ], "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]", "verboseLabel": "Corporate Debt Securities" } } }, "localname": "CorporateDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "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 effect of change in accounting principles, net of taxes", "verboseLabel": "Cumulative effect of change in accounting principles" } } }, "localname": "CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Debt Disclosure [Abstract]" } } }, "localname": "DebtDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_DebtDisclosureTextBlock": { "auth_ref": [ "r238" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/Debt" ], "xbrltype": "textBlockItemType" }, "us-gaap_DebtInstrumentAxis": { "auth_ref": [ "r20", "r22", "r23", "r412", "r414", "r446" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentBasisSpreadOnVariableRate1": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage points added to the reference rate to compute the variable rate on the debt instrument.", "label": "Debt Instrument, Basis Spread on Variable Rate", "terseLabel": "Interest rate increase" } } }, "localname": "DebtInstrumentBasisSpreadOnVariableRate1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DebtInstrumentFaceAmount": { "auth_ref": [ "r398", "r400" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Face (par) amount of debt instrument at time of issuance.", "label": "Debt Instrument, Face Amount", "terseLabel": "Aggregate principal amount" } } }, "localname": "DebtInstrumentFaceAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentFairValue": { "auth_ref": [ "r386" ], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesFairValueDisclosure", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentInterestRateStatedPercentage": { "auth_ref": [ "r41" ], "lang": { "en-US": { "role": { "documentation": "Contractual interest rate for funds borrowed, under the debt agreement.", "label": "Debt Instrument, Interest Rate, Stated Percentage", "terseLabel": "Interest rate" } } }, "localname": "DebtInstrumentInterestRateStatedPercentage", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentNameDomain": { "auth_ref": [ "r42" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DebtInstrumentTable": { "auth_ref": [ "r42", "r116", "r243", "r246", "r247", "r248", "r397", "r398", "r400", "r439" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of unrealized gain (loss) in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain (Loss), before Tax", "terseLabel": "Unrealized gain (loss) on investments" } } }, "localname": "DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger": { "auth_ref": [ "r187" ], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": 2.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months.", "label": "Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer", "terseLabel": "Fixed maturity securities, 12 Months or More, Fair Value" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": { "auth_ref": [ "r187" ], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": 1.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer.", "label": "Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss", "negatedLabel": "Fixed maturity securities, 12 Months or More, Unrealized Losses" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months": { "auth_ref": [ "r187" ], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": 1.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months.", "label": "Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months", "terseLabel": "Fixed maturity securities, Less than 12 Months, Fair Value" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": { "auth_ref": [ "r187" ], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": 2.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months.", "label": "Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss", "negatedLabel": "Fixed maturity securities, Less than 12 Months, Unrealized Losses" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition": { "auth_ref": [ "r184" ], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position.", "label": "Debt Securities, Available-for-sale, Unrealized Loss Position", "totalLabel": "Fixed maturity securities, Total, Fair Value" } } }, "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss": { "auth_ref": [ "r185" ], "calculation": { "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position.", "label": "Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss", "negatedTotalLabel": "Fixed maturity securities, Unrealized Losses" } } }, "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesGainLossExcludingOtti": { "auth_ref": [ "r78", "r79", "r427", "r480" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 6.0, "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": "Amount of unrealized and realized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity), investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and investment in debt security measured at fair value with change in fair value recognized in net income (trading). Excludes other-than-temporary impairment (OTTI).", "label": "Debt Securities, Gain (Loss), Excluding OTTI", "terseLabel": "Net realized gains (losses) on investments:", "verboseLabel": "Net realized (losses) gains on investments, excluding other-than-temporary impairment losses" } } }, "localname": "DebtSecuritiesGainLossExcludingOtti", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredPolicyAcquisitionCosts": { "auth_ref": [ "r462", "r488", "r490", "r506" ], "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", "verboseLabel": "Deferred acquisition costs" } } }, "localname": "DeferredPolicyAcquisitionCosts", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1": { "auth_ref": [ "r442", "r489" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 2.0, "parentTag": "us-gaap_BenefitsLossesAndExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense (reversal of expense) for deferred policy acquisition costs and present value of future profits from insurance contract acquired in business combination.", "label": "Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Amortization", "terseLabel": "Amortization of deferred acquisition costs and value of business acquired" } } }, "localname": "DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Defined Benefit Plan [Abstract]" } } }, "localname": "DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses": { "auth_ref": [ "r277", "r289", "r292" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 3.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.", "label": "Defined Benefit Plan, Amortization of Gain (Loss)", "negatedTerseLabel": "Amortization of net loss" } } }, "localname": "DefinedBenefitPlanAmortizationOfGainsLosses", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets": { "auth_ref": [ "r281" ], "lang": { "en-US": { "role": { "documentation": "Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.", "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets", "terseLabel": "Expected long-term return on plan assets" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear": { "auth_ref": [ "r291" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of contributions expected to be received by defined benefit plan from employer in fiscal year. Excludes contributions paid by employer in current fiscal year.", "label": "Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year", "terseLabel": "Cash expected contribution to plan over remainder of fiscal year" } } }, "localname": "DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets": { "auth_ref": [ "r276", "r288", "r292" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.", "label": "Defined Benefit Plan, Expected Return (Loss) on Plan Assets", "negatedLabel": "Expected return on plan assets" } } }, "localname": "DefinedBenefitPlanExpectedReturnOnPlanAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanFundedPercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage of plan assets to benefit obligation of defined benefit plan.", "label": "Defined Benefit Plan, Funded Percentage", "terseLabel": "Funded status percentage" } } }, "localname": "DefinedBenefitPlanFundedPercentage", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanFundedStatusOfPlan": { "auth_ref": [ "r269", "r271" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.", "label": "Defined Benefit Plan, Funded (Unfunded) Status of Plan", "terseLabel": "Qualified pension benefits plan under-funded amount" } } }, "localname": "DefinedBenefitPlanFundedStatusOfPlan", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanInterestCost": { "auth_ref": [ "r270", "r275", "r287", "r292" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cost recognized for passage of time related to defined benefit plan.", "label": "Defined Benefit Plan, Interest Cost", "terseLabel": "Interest cost" } } }, "localname": "DefinedBenefitPlanInterestCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost": { "auth_ref": [ "r274", "r286", "r292" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of net periodic benefit cost (credit) for defined benefit plan.", "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit)", "totalLabel": "Net periodic benefit cost" } } }, "localname": "DefinedBenefitPlanNetPeriodicBenefitCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1": { "auth_ref": [ "r278", "r290" ], "calculation": { "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails": { "order": 4.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment.", "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment", "negatedTerseLabel": "Curtailment/settlement gain" } } }, "localname": "DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPostretirementHealthCoverageMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Plan designed to provide postretirement health benefits to retiree or beneficiary. Includes, but is not limited to, defined benefit and defined contribution plans.", "label": "Postretirement Health Coverage [Member]", "terseLabel": "Retirement Health Benefits" } } }, "localname": "DefinedBenefitPostretirementHealthCoverageMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DerivativeContractTypeDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Financial instrument or 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 Contract [Domain]", "terseLabel": "Derivative Contract [Domain]" } } }, "localname": "DerivativeContractTypeDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical", "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DerivativeInstrumentRiskAxis": { "auth_ref": [ "r363", "r364", "r365", "r366" ], "lang": { "en-US": { "role": { "documentation": "Information by type of derivative contract.", "label": "Derivative Instrument [Axis]", "terseLabel": "Derivative Instrument [Axis]" } } }, "localname": "DerivativeInstrumentRiskAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical", "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativeMember": { "auth_ref": [ "r361" ], "lang": { "en-US": { "role": { "documentation": "This element represents types of derivative financial instruments which are financial instruments or other contractual arrangements with all three of the following characteristics: (a) it has (1) one or more underlyings and (2) one or more notional amounts or payment provisions or both. Those terms determine the amount of the settlement or settlements, and, in some cases, whether or not a settlement is required; (b) it requires no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors; and (c) its terms require or permit net settlement, it can readily be settled net by a means outside the contract, or it provides for delivery of an asset that puts the recipient in a position not substantially different from net settlement. Notwithstanding the above characteristics, loan commitments that relate to the origination of mortgage loans that will be held for sale are accounted for as derivative instruments by the issuer of the loan commitment (that is, the potential lender).", "label": "Derivative [Member]", "terseLabel": "Derivative" } } }, "localname": "DerivativeMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical", "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member": { "auth_ref": [ "r264" ], "lang": { "en-US": { "role": { "documentation": "Effect in current period from application of guidance for revenue from contract with customer compared with guidance for revenue recognition applicable prior to change when using transition method for cumulative effect in period including initial date of application.", "label": "Difference between Revenue Guidance in Effect before and after Topic 606 [Member]", "terseLabel": "Difference between Revenue Guidance in effect before and after Topic 606" } } }, "localname": "DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock": { "auth_ref": [ "r254", "r310" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensation" ], "xbrltype": "textBlockItemType" }, "us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Disclosure of Compensation Related Costs, Share-based Payments [Abstract]" } } }, "localname": "DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock": { "auth_ref": [ "r298", "r306" ], "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 Stock Based Compensation Activity" } } }, "localname": "DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "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/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_DisposalGroupClassificationAxis": { "auth_ref": [ "r9" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DisposalGroupClassificationDomain": { "auth_ref": [], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember": { "auth_ref": [ "r218", "r223" ], "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, not discontinued operations" } } }, "localname": "DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal": { "auth_ref": [ "r105", "r218", "r220" ], "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", "negatedTerseLabel": "Impairment loss" } } }, "localname": "DisposalGroupNotDiscontinuedOperationGainLossOnDisposal", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock": { "auth_ref": [ "r13", "r225" ], "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" } } }, "localname": "DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/Dispositions" ], "xbrltype": "textBlockItemType" }, "us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain": { "auth_ref": [], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Dividends": { "auth_ref": [ "r249", "r438" ], "calculation": { "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": 2.0, "parentTag": "us-gaap_UndistributedEarnings", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.", "label": "Dividends", "negatedTerseLabel": "Less: Common stock dividends paid" } } }, "localname": "Dividends", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DividendsAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information about distribution of earnings to shareholders including, but not limited to, cash, property or capital stock.", "label": "Dividends [Axis]", "terseLabel": "Dividends [Axis]" } } }, "localname": "DividendsAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DividendsCash": { "auth_ref": [ "r249", "r438" ], "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", "negatedTerseLabel": "Common stock dividends" } } }, "localname": "DividendsCash", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DividendsDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Distributions of earnings to shareholders including but not limited to cash, property or capital stock.", "label": "Dividends [Domain]", "terseLabel": "Dividends [Domain]" } } }, "localname": "DividendsDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DividendsPayableAmountPerShare": { "auth_ref": [ "r109" ], "lang": { "en-US": { "role": { "documentation": "The per share amount of a dividend declared, but not paid, as of the financial reporting date.", "label": "Dividends Payable, Amount Per Share", "terseLabel": "Dividends Payable, Amount Per Share" } } }, "localname": "DividendsPayableAmountPerShare", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_DividendsPayableCurrentAndNoncurrent": { "auth_ref": [ "r22", "r24", "r413", "r454" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.", "label": "Dividends Payable", "terseLabel": "Dividends payable (in dollars per share)" } } }, "localname": "DividendsPayableCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DividendsPreferredStockCash": { "auth_ref": [ "r249", "r438" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.", "label": "Dividends, Preferred Stock, Cash", "negatedTerseLabel": "Preferred stock dividends" } } }, "localname": "DividendsPreferredStockCash", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DomesticCorporateDebtSecuritiesMember": { "auth_ref": [ "r170", "r272", "r292" ], "lang": { "en-US": { "role": { "documentation": "Debt security issued by corporation domiciled in United States of America (US).", "label": "Debt Security, Corporate, US [Member]", "terseLabel": "U.S. corporate" } } }, "localname": "DomesticCorporateDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasic": { "auth_ref": [ "r77", "r120", "r127", "r132", "r136", "r137", "r141", "r430", "r478" ], "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", "totalLabel": "Net income (in dollars per share)", "verboseLabel": "Basic (in dollars per share)" } } }, "localname": "EarningsPerShareBasic", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareBasicAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share, Basic [Abstract]", "terseLabel": "Earnings per common share - Basic" } } }, "localname": "EarningsPerShareBasicAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasicDistributed": { "auth_ref": [ "r130", "r131", "r133", "r135" ], "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 (in dollars per share)" } } }, "localname": "EarningsPerShareBasicDistributed", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "perShareItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasicUndistributed": { "auth_ref": [ "r130", "r131", "r133", "r134", "r135" ], "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 (in dollars per share)" } } }, "localname": "EarningsPerShareBasicUndistributed", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareDiluted": { "auth_ref": [ "r77", "r120", "r127", "r132", "r136", "r137", "r141", "r430", "r478" ], "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", "totalLabel": "Net income (in dollars per share)", "verboseLabel": "Diluted (in dollars per share)" } } }, "localname": "EarningsPerShareDiluted", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareDilutedAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share, Diluted [Abstract]", "terseLabel": "Earnings per common share - Diluted" } } }, "localname": "EarningsPerShareDilutedAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareDilutedDistributed": { "auth_ref": [ "r130", "r131", "r133", "r135" ], "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 (in dollars per share)" } } }, "localname": "EarningsPerShareDilutedDistributed", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "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 earning (in dollars per share)" } } }, "localname": "EarningsPerShareDilutedUndistributed", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareTextBlock": { "auth_ref": [ "r142" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShare" ], "xbrltype": "textBlockItemType" }, "us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents": { "auth_ref": [ "r393" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount": { "auth_ref": [ "r304" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.", "label": "Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount", "terseLabel": "Compensation cost" } } }, "localname": "EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized": { "auth_ref": [ "r305" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1": { "auth_ref": [ "r305" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "durationItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense": { "auth_ref": [ "r303" ], "calculation": { "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails": { "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" } } }, "localname": "EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EquityComponentDomain": { "auth_ref": [ "r242" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_EquitySecuritiesFvNi": { "auth_ref": [ "r384" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_Investments", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).", "label": "Equity Securities, FV-NI", "terseLabel": "Equity securities, at fair value (cost - $349.6 in 2018 and $316.3 in 2017)" } } }, "localname": "EquitySecuritiesFvNi", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_EquitySecuritiesFvNiCost": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.", "label": "Equity Securities, FV-NI, Cost", "terseLabel": "Equity securities, cost" } } }, "localname": "EquitySecuritiesFvNiCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_EquitySecuritiesMember": { "auth_ref": [ "r16", "r21", "r190", "r420", "r447", "r515" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EstimateOfFairValueFairValueDisclosureMember": { "auth_ref": [ "r386" ], "lang": { "en-US": { "role": { "documentation": "Measured as an estimate of fair value.", "label": "Estimate of Fair Value Measurement [Member]", "terseLabel": "Fair Value" } } }, "localname": "EstimateOfFairValueFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": { "auth_ref": [ "r370", "r371", "r372", "r373", "r379", "r381" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock": { "auth_ref": [ "r370", "r371", "r372", "r374" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain": { "auth_ref": [ "r375", "r381" ], "lang": { "en-US": { "role": { "documentation": "Class of asset.", "label": "Asset Class [Domain]", "terseLabel": "Asset Class [Domain]" } } }, "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "domainItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByAssetClassAxis": { "auth_ref": [ "r371", "r381" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByBalanceSheetGroupingTable": { "auth_ref": [ "r371", "r387", "r388" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByFairValueHierarchyLevelAxis": { "auth_ref": [ "r272", "r273", "r292", "r372", "r403" ], "lang": { "en-US": { "role": { "documentation": "Information by level within fair value hierarchy and fair value measured at net asset value per share as practical expedient.", "label": "Fair Value Hierarchy and NAV [Axis]", "terseLabel": "Fair Value Hierarchy and NAV [Axis]" } } }, "localname": "FairValueByFairValueHierarchyLevelAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByLiabilityClassAxis": { "auth_ref": [ "r378", "r381" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementBasisAxis": { "auth_ref": [ "r371", "r382" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementFrequencyAxis": { "auth_ref": [ "r370" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosureItemAmountsDomain": { "auth_ref": [], "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/2018-01-31", "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/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresTextBlock": { "auth_ref": [ "r383" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosures" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueInputsLevel1Member": { "auth_ref": [ "r272", "r273", "r292", "r372", "r404" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel2Member": { "auth_ref": [ "r272", "r273", "r292", "r372", "r405" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel3Member": { "auth_ref": [ "r272", "r273", "r292", "r372", "r406" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain": { "auth_ref": [ "r375", "r381" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementFrequencyDomain": { "auth_ref": [ "r370", "r378" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1": { "auth_ref": [ "r376" ], "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 (loss) income included in earnings" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases": { "auth_ref": [ "r377" ], "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" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales": { "auth_ref": [ "r377" ], "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", "negatedTerseLabel": "Sales" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue": { "auth_ref": [ "r375" ], "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", "periodStartLabel": "Balance, beginning of period" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails" ], "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 and NAV [Domain]", "terseLabel": "Fair Value Hierarchy and NAV [Domain]" } } }, "localname": "FairValueMeasurementsFairValueHierarchyDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsRecurringMember": { "auth_ref": [ "r370", "r378" ], "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 recurring basis generally include those items for which measurement inputs are readily available and which are measured at fair value at successive reporting periods.", "label": "Fair Value, Measurements, Recurring [Member]", "terseLabel": "Recurring", "verboseLabel": "Fair Value, Measurements, Recurring" } } }, "localname": "FairValueMeasurementsRecurringMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock": { "auth_ref": [ "r375", "r380" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) using recurring unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]", "terseLabel": "Schedule of carrying values of level 3 assets" } } }, "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FinancialInstrumentAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of financial instrument.", "label": "Financial Instrument [Axis]", "terseLabel": "Financial Instrument [Axis]" } } }, "localname": "FinancialInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "stringItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "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": "Estimated Useful Life" } } }, "localname": "FiniteLivedIntangibleAssetUsefulLife", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "durationItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails": { "order": 7.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized 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": "Finite-Lived Intangible Assets, Amortization Expense, after Year Five", "terseLabel": "Thereafter" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths": { "auth_ref": [ "r213" ], "calculation": { "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails": { "order": 2.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during 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": "Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months", "terseLabel": "2019" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails": { "order": 1.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the 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": "Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year", "terseLabel": "Remainder of Fiscal Year" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of amortization expense of assets, excluding financial assets, that lack physical substance, having a limited useful life.", "label": "Finite-lived Intangible Assets Amortization Expense [Table Text Block]", "terseLabel": "Finite-lived Intangible Assets Amortization Expense" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive": { "auth_ref": [ "r213" ], "calculation": { "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails": { "order": 6.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during 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": "Finite-Lived Intangible Assets, Amortization Expense, Year Five", "terseLabel": "2023" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFive", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour": { "auth_ref": [ "r213" ], "calculation": { "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails": { "order": 5.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during 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": "Finite-Lived Intangible Assets, Amortization Expense, Year Four", "terseLabel": "2022" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFour", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree": { "auth_ref": [ "r213" ], "calculation": { "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails": { "order": 4.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during 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": "Finite-Lived Intangible Assets, Amortization Expense, Year Three", "terseLabel": "2021" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearThree", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo": { "auth_ref": [ "r213" ], "calculation": { "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails": { "order": 3.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during 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": "Finite-Lived Intangible Assets, Amortization Expense, Year Two", "terseLabel": "2020" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis": { "auth_ref": [ "r205", "r208", "r211", "r215", "r408" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain": { "auth_ref": [ "r205", "r210" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FiniteLivedIntangibleAssetsNet": { "auth_ref": [ "r211" ], "calculation": { "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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": "Finite-Lived Intangible Assets, Net", "totalLabel": "Total" } } }, "localname": "FiniteLivedIntangibleAssetsNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FixedMaturitiesMember": { "auth_ref": [ "r505" ], "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]", "terseLabel": "Fixed maturity securities" } } }, "localname": "FixedMaturitiesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ForeignCorporateDebtSecuritiesMember": { "auth_ref": [ "r170", "r272" ], "lang": { "en-US": { "role": { "documentation": "Debt security issued by corporation not domiciled in United States of America (US).", "label": "Debt Security, Corporate, Non-US [Member]", "terseLabel": "Foreign corporate" } } }, "localname": "ForeignCorporateDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ForeignGovernmentDebtMember": { "auth_ref": [ "r170" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ForeignGovernmentDebtSecuritiesMember": { "auth_ref": [ "r272" ], "lang": { "en-US": { "role": { "documentation": "Debt security issued by government not domiciled in United States of America (US).", "label": "Debt Security, Government, Non-US [Member]", "terseLabel": "Foreign governments" } } }, "localname": "ForeignGovernmentDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FundsHeldUnderReinsuranceAgreementsLiability": { "auth_ref": [ "r473" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 6.0, "parentTag": "us-gaap_Liabilities", "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", "verboseLabel": "Funds held under reinsurance" } } }, "localname": "FundsHeldUnderReinsuranceAgreementsLiability", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnInvestments": { "auth_ref": [ "r83", "r105", "r169" ], "calculation": { "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of realized and unrealized gain (loss) on investment.", "label": "Gain (Loss) on Investments", "totalLabel": "Total net realized gains (losses)" } } }, "localname": "GainLossOnInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments": { "auth_ref": [ "r105" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 7.0, "parentTag": "us-gaap_Revenues", "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 (losses) gains on investments, excluding other-than-temporary impairment losses", "verboseLabel": "Net realized gains (losses) on investments:" } } }, "localname": "GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnSaleOfEquityInvestments": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence.", "label": "Gain (Loss) on Sale of Equity Investments", "terseLabel": "Net losses recognized on equity securities" } } }, "localname": "GainLossOnSaleOfEquityInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentsUnrealizedGainsOnEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnSaleOfInvestments": { "auth_ref": [ "r105" ], "calculation": { "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails": { "order": 3.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.", "label": "Gain (Loss) on Sale of Investments", "netLabel": "Net realized gains on investments" } } }, "localname": "GainLossOnSaleOfInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GeographicConcentrationRiskMember": { "auth_ref": [ "r144" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Goodwill": { "auth_ref": [ "r192", "r194" ], "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" } } }, "localname": "Goodwill", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails", "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillAcquiredDuringPeriod": { "auth_ref": [ "r196" ], "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": "Acquisitions" } } }, "localname": "GoodwillAcquiredDuringPeriod", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails" ], "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/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock": { "auth_ref": [ "r217" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for goodwill and intangible assets.", "label": "Goodwill and Intangible Assets Disclosure [Text Block]", "terseLabel": "Goodwill and Intangible Assets" } } }, "localname": "GoodwillAndIntangibleAssetsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssets" ], "xbrltype": "textBlockItemType" }, "us-gaap_GoodwillForeignCurrencyTranslationGainLoss": { "auth_ref": [ "r198" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillImpairedAccumulatedImpairmentLoss": { "auth_ref": [ "r195", "r199" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillImpairmentLoss": { "auth_ref": [ "r105", "r193", "r197", "r201" ], "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", "negatedTerseLabel": "Impairment" } } }, "localname": "GoodwillImpairmentLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillLineItems": { "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": "Goodwill [Line Items]", "terseLabel": "Goodwill [Line Items]" } } }, "localname": "GoodwillLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails" ], "xbrltype": "stringItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails" ], "xbrltype": "stringItemType" }, "us-gaap_GuarantyLiabilities": { "auth_ref": [ "r232", "r233", "r422", "r474" ], "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": "Accrual of estimated share of guaranty association assessments" } } }, "localname": "GuarantyLiabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesFairValue": { "auth_ref": [ "r182" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at amortized cost (held-to-maturity).", "label": "Debt Securities, Held-to-maturity, Fair Value", "terseLabel": "Carrying value of securities" } } }, "localname": "HeldToMaturitySecuritiesFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "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": "Hurricane Matthew" } } }, "localname": "HurricaneMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": { "auth_ref": [ "r75", "r120", "r409", "r428", "r481" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 1.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "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", "terseLabel": "Segment income before provision for income tax", "totalLabel": "Income before provision for income taxes" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeStatementAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Income Statement [Abstract]" } } }, "localname": "IncomeStatementAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis": { "auth_ref": [], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable": { "auth_ref": [ "r0", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r10", "r11", "r12", "r223", "r224" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementLocationAxis": { "auth_ref": [ "r221" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails", "http://www.assurant.com/role/DispositionsDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails", "http://www.assurant.com/role/DispositionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IncomeTaxContingencyLineItems": { "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 Tax Contingency [Line Items]", "terseLabel": "Income Tax Contingency [Line Items]" } } }, "localname": "IncomeTaxContingencyLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxContingencyTable": { "auth_ref": [ "r311", "r312", "r313", "r314" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about 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": "Income Tax Contingency [Table]", "terseLabel": "Income Tax Contingency [Table]" } } }, "localname": "IncomeTaxContingencyTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Income Tax Disclosure [Abstract]" } } }, "localname": "IncomeTaxDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxDisclosureTextBlock": { "auth_ref": [ "r317" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/IncomeTaxes" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeTaxExpenseBenefit": { "auth_ref": [ "r113", "r153", "r316" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 2.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": -1.0 } }, "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)", "negatedTerseLabel": "Provision for income taxes", "terseLabel": "Provision for income taxes", "verboseLabel": "Provision (benefit) for income taxes" } } }, "localname": "IncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeTaxReceivable": { "auth_ref": [ "r34", "r444" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 8.0, "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" } } }, "localname": "IncomeTaxReceivable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock": { "auth_ref": [ "r129", "r140" ], "lang": { "en-US": { "role": { "documentation": "Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible preferred stock using the if-converted method.", "label": "Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock", "terseLabel": "Mandatory convertible preferred stock (in shares)" } } }, "localname": "IncrementalCommonSharesAttributableToConversionOfPreferredStock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements": { "auth_ref": [ "r128", "r140" ], "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 (in shares)" } } }, "localname": "IncrementalCommonSharesAttributableToShareBasedPaymentArrangements", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis": { "auth_ref": [ "r207", "r214" ], "lang": { "en-US": { "role": { "documentation": "Information by type or class of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.", "label": "Indefinite-lived Intangible Assets [Axis]", "terseLabel": "Indefinite-lived Intangible Assets [Axis]" } } }, "localname": "IndefiniteLivedIntangibleAssetsByMajorClassAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems": { "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": "Indefinite-lived Intangible Assets [Line Items]", "terseLabel": "Indefinite-lived Intangible Assets [Line Items]" } } }, "localname": "IndefiniteLivedIntangibleAssetsByMajorClassLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill": { "auth_ref": [ "r214" ], "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 life, Licenses" } } }, "localname": "IndefiniteLivedIntangibleAssetsExcludingGoodwill", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain": { "auth_ref": [ "r207", "r214" ], "lang": { "en-US": { "role": { "documentation": "The major class of indefinite-lived intangible asset (for example, trade names, etc. but not all-inclusive), excluding goodwill. 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 the company.", "label": "Indefinite-lived Intangible Assets, Major Class Name [Domain]", "terseLabel": "Indefinite-lived Intangible Assets, Major Class Name [Domain]" } } }, "localname": "IndefiniteLivedIntangibleAssetsMajorClassNameDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis": { "auth_ref": [ "r264" ], "lang": { "en-US": { "role": { "documentation": "Information about effect of transition method for cumulative effect in initial period of application.", "label": "Initial Application Period Cumulative Effect Transition [Axis]", "terseLabel": "Initial Application Period Cumulative Effect Transition [Axis]" } } }, "localname": "InitialApplicationPeriodCumulativeEffectTransitionAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Effect of transition method for cumulative effect in initial period of application.", "label": "Initial Application Period Cumulative Effect Transition [Domain]", "terseLabel": "Initial Application Period Cumulative Effect Transition [Domain]" } } }, "localname": "InitialApplicationPeriodCumulativeEffectTransitionDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InsuranceDisclosureTextBlock": { "auth_ref": [ "r508" ], "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/2018-01-31", "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/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_IntangibleAssetsNetExcludingGoodwill": { "auth_ref": [ "r203", "r209" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 11.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "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)", "terseLabel": "Other intangible assets, net", "verboseLabel": "Upfront costs in connection with client contracts" } } }, "localname": "IntangibleAssetsNetExcludingGoodwill", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ContractRevenuesNarrativeDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpense": { "auth_ref": [ "r74", "r152", "r396", "r399", "r431" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "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" } } }, "localname": "InterestExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpenseDebt": { "auth_ref": [ "r84", "r237" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of the cost of borrowed funds accounted for as interest expense for debt.", "label": "Interest Expense, Debt", "terseLabel": "Debt interest expense" } } }, "localname": "InterestExpenseDebt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InvestmentTypeAxis": { "auth_ref": [ "r509", "r511", "r513", "r514" ], "lang": { "en-US": { "role": { "documentation": "Information by type of investments.", "label": "Investment Type [Axis]", "terseLabel": "Investment Type [Axis]", "verboseLabel": "Schedule of Fair Value of Separate Accounts by Major Category of Investment [Axis]" } } }, "localname": "InvestmentTypeAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentTypeCategorizationMember": { "auth_ref": [ "r509", "r511", "r513", "r514" ], "lang": { "en-US": { "role": { "documentation": "Asset obtained to generate income or appreciate in value.", "label": "Investments [Domain]", "terseLabel": "Investments [Domain]", "verboseLabel": "Schedule of Fair Value of Separate Accounts by Major Category of Investment, Category [Domain]" } } }, "localname": "InvestmentTypeCategorizationMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Investments": { "auth_ref": [ "r469" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_InvestmentsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Investments [Abstract]", "terseLabel": "Investments:" } } }, "localname": "InvestmentsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "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/2018-01-31", "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/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_InvestmentsFairValueDisclosure": { "auth_ref": [ "r371" ], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 2.0, "parentTag": "us-gaap_AssetsFairValueDisclosure", "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/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/CommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_Liabilities": { "auth_ref": [ "r40" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesAndStockholdersEquity": { "auth_ref": [ "r33", "r416", "r460" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesFairValueDisclosure": { "auth_ref": [ "r371" ], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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", "totalLabel": "Total financial liabilities", "verboseLabel": "Financial Liabilities" } } }, "localname": "LiabilitiesFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails", "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis": { "auth_ref": [ "r498" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense": { "auth_ref": [ "r494", "r497" ], "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 period", "periodStartLabel": "Claims and benefits payable, at beginning of period", "terseLabel": "Claims and benefits payable" } } }, "localname": "LiabilityForClaimsAndClaimsAdjustmentExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilityForFuturePolicyBenefits": { "auth_ref": [ "r471", "r493", "r494", "r497" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense": { "auth_ref": [ "r452", "r494", "r497" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The aggregate amount of policy reserves (provided for future obligations including unpaid claims and claims adjustment expenses) and policy benefits (liability for future policy benefits) as of the balance sheet date; grouped amount of all the liabilities associated with the company's insurance policies.", "label": "Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense", "terseLabel": "Acquired reserves as of Acquisition Date" } } }, "localname": "LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1": { "auth_ref": [ "r496" ], "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": "Current year" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1": { "auth_ref": [ "r496" ], "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": "Prior years" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1": { "auth_ref": [ "r495" ], "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", "terseLabel": "Increase (decrease) in premium deficiency reserve liability", "totalLabel": "Total incurred losses and loss adjustment expenses" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet": { "auth_ref": [ "r445", "r494", "r497" ], "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 period", "periodStartLabel": "Net claims and benefits payable, at beginning of period" } } }, "localname": "LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LicenseMember": { "auth_ref": [ "r263" ], "lang": { "en-US": { "role": { "documentation": "Right to use intangible asset. Intangible asset includes, but is not limited to, patent, copyright, technology, manufacturing process, software or trademark.", "label": "License [Member]", "terseLabel": "License" } } }, "localname": "LicenseMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LineOfCreditFacilityAxis": { "auth_ref": [ "r38", "r116" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity": { "auth_ref": [ "r38" ], "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" } } }, "localname": "LineOfCreditFacilityCurrentBorrowingCapacity", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LineOfCreditFacilityLenderDomain": { "auth_ref": [ "r38" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity": { "auth_ref": [ "r38" ], "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", "verboseLabel": "Senior revolving credit facility" } } }, "localname": "LineOfCreditFacilityMaximumBorrowingCapacity", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LoansReceivableCommercialMortgage": { "auth_ref": [ "r162", "r425" ], "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", "verboseLabel": "Outstanding balance of commercial mortgage loans (less than $1.0 million)" } } }, "localname": "LoansReceivableCommercialMortgage", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LondonInterbankOfferedRateLIBORMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Interest rate at which a bank borrows funds from other banks in the London interbank market.", "label": "London Interbank Offered Rate (LIBOR) [Member]", "terseLabel": "London Interbank Offered Rate (LIBOR)" } } }, "localname": "LondonInterbankOfferedRateLIBORMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LongTermDebt": { "auth_ref": [ "r23", "r236", "r414", "r456" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.", "label": "Long-term Debt", "terseLabel": "Debt outstanding" } } }, "localname": "LongTermDebt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongtermDebtTypeAxis": { "auth_ref": [ "r42" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LongtermDebtTypeDomain": { "auth_ref": [ "r42", "r235" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LossContingencyAccrualPayments": { "auth_ref": [ "r229" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow reducing loss contingency liability.", "label": "Loss Contingency Accrual, Payments", "terseLabel": "Payments of accrued indemnification liability" } } }, "localname": "LossContingencyAccrualPayments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_MinorityInterest": { "auth_ref": [ "r47", "r415", "r459" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet": { "auth_ref": [ "r466" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Investments", "weight": 1.0 } }, "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", "verboseLabel": "Commercial mortgage loans on real estate, at amortized cost" } } }, "localname": "MortgageLoansOnRealEstateCommercialAndConsumerNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_MortgagesHeldForSaleFairValueDisclosure": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 1.0, "parentTag": "us-gaap_AssetsFairValueDisclosure", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_MutualFundMember": { "auth_ref": [ "r272" ], "lang": { "en-US": { "role": { "documentation": "Regulated investment instrument that pools funds from multiple investors to invest principally in a portfolio of securities and money market instruments to match the investment objective.", "label": "Mutual Fund [Member]", "terseLabel": "Mutual funds" } } }, "localname": "MutualFundMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NatureOfOperations": { "auth_ref": [ "r143", "r147" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/NatureOfOperations" ], "xbrltype": "textBlockItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivities": { "auth_ref": [ "r102" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "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", "totalLabel": "Net cash provided by (used in) financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivities": { "auth_ref": [ "r102" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivities": { "auth_ref": [ "r102", "r104", "r106" ], "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", "verboseLabel": "Net cash provided by (used in) operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetIncomeLoss": { "auth_ref": [ "r67", "r70", "r76", "r106", "r140", "r429", "r477" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 1.0, "parentTag": "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited", "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic": { "auth_ref": [ "r120", "r125" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": 1.0, "parentTag": "us-gaap_UndistributedEarnings", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.", "label": "Net Income (Loss) Available to Common Stockholders, Basic", "totalLabel": "Net income attributable to common stockholders", "verboseLabel": "Net Income (Loss) Available to Common Stockholders, Basic" } } }, "localname": "NetIncomeLossAvailableToCommonStockholdersBasic", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NetInvestmentIncome": { "auth_ref": [ "r479" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 2.0, "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, 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" } } }, "localname": "NetInvestmentIncome", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "New Accounting Pronouncements and Changes in Accounting Principles [Abstract]" } } }, "localname": "NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock": { "auth_ref": [ "r123" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.", "label": "New Accounting Pronouncements and Changes in Accounting Principles [Text Block]", "terseLabel": "Recent Accounting Pronouncements" } } }, "localname": "NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RecentAccountingPronouncements" ], "xbrltype": "textBlockItemType" }, "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems": { "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": "New Accounting Pronouncements or Change in Accounting Principle [Line Items]", "terseLabel": "New Accounting Pronouncements or Change in Accounting Principle [Line Items]" } } }, "localname": "NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable": { "auth_ref": [ "r119", "r121", "r122" ], "lang": { "en-US": { "role": { "documentation": "Summarization of the changes in an accounting principle or a new accounting pronouncement, including the line items affected by the change and the financial effects of the change on those particular line items.", "label": "New Accounting Pronouncements or Change in Accounting Principle [Table]", "terseLabel": "New Accounting Pronouncements or Change in Accounting Principle [Table]" } } }, "localname": "NewAccountingPronouncementsOrChangeInAccountingPrincipleTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "stringItemType" }, "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]", "terseLabel": "Recent Accounting Pronouncements" } } }, "localname": "NewAccountingPronouncementsPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/BasisOfPresentationPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance": { "auth_ref": [ "r250", "r344", "r347" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_NoncontrollingInterestMember": { "auth_ref": [ "r340" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_NonqualifiedPlanMember": { "auth_ref": [ "r283" ], "lang": { "en-US": { "role": { "documentation": "Plan without tax-exempt status in accordance with applicable tax provision of designated taxing authority. Taxing authority includes, but is not limited to, U.S. Internal Revenue Service (IRS). Includes, but is not limited to, defined benefit and defined contribution plans.", "label": "Nonqualified Plan [Member]", "terseLabel": "Unfunded Nonqualified Pension Benefits" } } }, "localname": "NonqualifiedPlanMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NonrecurringAdjustmentAxis": { "auth_ref": [ "r323" ], "lang": { "en-US": { "role": { "documentation": "Information about material and nonrecurring adjustment directly attributable to the business combination(s) included in the reported pro forma revenue and earnings (supplemental pro forma information).", "label": "Nonrecurring Adjustment [Axis]", "terseLabel": "Nonrecurring Adjustment [Axis]" } } }, "localname": "NonrecurringAdjustmentAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_NonrecurringAdjustmentDomain": { "auth_ref": [ "r323" ], "lang": { "en-US": { "role": { "documentation": "Material, nonrecurring adjustment(s) allocated (included) to (in) reported pro forma revenue and earnings (supplemental pro forma information).", "label": "Nonrecurring Adjustment [Domain]", "terseLabel": "Nonrecurring Adjustment [Domain]" } } }, "localname": "NonrecurringAdjustmentDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "integerItemType" }, "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/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_OtherAggregatedInvestmentsMember": { "auth_ref": [ "r512" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherAssets": { "auth_ref": [ "r19", "r410", "r449" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 12.0, "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" } } }, "localname": "OtherAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherAssetsFairValueDisclosure": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails": { "order": 3.0, "parentTag": "us-gaap_AssetsFairValueDisclosure", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value portion of other assets.", "label": "Other Assets, Fair Value Disclosure", "terseLabel": "Other assets" } } }, "localname": "OtherAssetsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent": { "auth_ref": [ "r342", "r343", "r348" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax, after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.", "label": "Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax, Portion Attributable to Parent", "terseLabel": "Derivative qualified for hedge accounting gain (loss)" } } }, "localname": "OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical", "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent": { "auth_ref": [ "r342", "r343", "r348" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.", "label": "Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent", "terseLabel": "Change in unrealized gains on derivative transactions, net of taxes of $0.2 and $(5.4) for the three and six months ended June 30, 2018, respectively" } } }, "localname": "OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent": { "auth_ref": [ "r342", "r343", "r348" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.", "label": "Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent", "negatedLabel": "Net change in unrealized gains on derivative transactions, taxes" } } }, "localname": "OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax": { "auth_ref": [ "r49", "r62", "r395" ], "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", "negatedTerseLabel": "Net change in foreign currency translation, taxes" } } }, "localname": "OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax": { "auth_ref": [ "r52" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "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), Securities, Available-for-sale, Adjustment, after Tax", "verboseLabel": "Change in unrealized gains on securities, net of taxes of $28.2, $(40.7), $76.0 and $(57.7), respectively" } } }, "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax": { "auth_ref": [ "r52", "r62" ], "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), Securities, Available-for-sale, Tax", "negatedTerseLabel": "Net change in unrealized gains on securities, taxes" } } }, "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax": { "auth_ref": [ "r64", "r73" ], "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": "Change in accumulated other comprehensive (loss) income before reclassifications" } } }, "localname": "OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax": { "auth_ref": [ "r49", "r394" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "order": 4.0, "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", "verboseLabel": "Change in foreign currency translation, net of taxes of $1.0, $(0.9), $1.5 and $(1.3), respectively" } } }, "localname": "OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r68", "r71", "r73", "r242" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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", "totalLabel": "Total other comprehensive (loss) income" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Other Comprehensive Income (Loss), Net of Tax [Abstract]", "terseLabel": "Other comprehensive (loss) income:" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax": { "auth_ref": [ "r58", "r61" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "order": 5.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax", "negatedLabel": "Amortization of pension and postretirement unrecognized net periodic benefit cost, net of taxes of $(0.3), $(0.3), $(0.3) and $(0.2), respectively" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax": { "auth_ref": [ "r58", "r62", "r342" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax", "terseLabel": "Net change in pension plan curtailment and amortization of pension and postretirement unrecognized net periodic benefit cost, taxes" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherExpenses": { "auth_ref": [ "r82", "r486" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expense classified as other.", "label": "Other Expenses", "terseLabel": "Other Expenses" } } }, "localname": "OtherExpenses", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherIncome": { "auth_ref": [ "r483" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "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": "Amount of revenue and income classified as other.", "label": "Other Income", "terseLabel": "Fees and other income", "verboseLabel": "Fees and other income" } } }, "localname": "OtherIncome", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherIntangibleAssetsMember": { "auth_ref": [], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherInvestments": { "auth_ref": [ "r36", "r467" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 4.0, "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" } } }, "localname": "OtherInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "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" } } }, "localname": "OtherInvestmentsMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherLiabilitiesMember": { "auth_ref": [ "r362", "r369" ], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption encompassing other liabilities.", "label": "Other Liabilities [Member]", "terseLabel": "Other liabilities" } } }, "localname": "OtherLiabilitiesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherShortTermInvestments": { "auth_ref": [ "r48", "r424", "r468" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "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" } } }, "localname": "OtherShortTermInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings": { "auth_ref": [ "r167" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of other-than-temporary impairment (OTTI) on investment in debt security, recognized in earnings.", "label": "Other-than-temporary Impairment Loss, Debt Securities, Portion Recognized in Earnings", "negatedLabel": "Net realized losses related to other-than-temporary impairment:" } } }, "localname": "OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities": { "auth_ref": [ "r54", "r164" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities": { "auth_ref": [ "r176" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "order": 3.0, "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", "negatedLabel": "Change in other-than-temporary impairment losses, net of taxes of $0.4, $0.8, $1.3 and $1.0, respectively" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxPortionAttributableToParentAvailableforsaleSecurities": { "auth_ref": [ "r54", "r62", "r343", "r348" ], "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", "terseLabel": "Net change in other-than-temporary impairment gains, taxes" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxPortionAttributableToParentAvailableforsaleSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet": { "auth_ref": [], "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", "negatedTerseLabel": "Net realized losses related to other-than-temporary impairments:" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 3.0, "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", "negatedTerseLabel": "Other-than-temporary impairment losses recognized in earnings" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OverAllotmentOptionMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Right given to the underwriter to sell additional shares over the initial allotment.", "label": "Over-Allotment Option [Member]", "terseLabel": "Over-Allotment Option" } } }, "localname": "OverAllotmentOptionMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PaymentsForLossesAndLossAdjustmentExpense": { "auth_ref": [ "r103", "r496" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForProceedsFromOtherInvestingActivities": { "auth_ref": [ "r90", "r94", "r117" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 13.0, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForProceedsFromShortTermInvestments": { "auth_ref": [ "r88", "r91", "r108" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 12.0, "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" } } }, "localname": "PaymentsForProceedsFromShortTermInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForRepurchaseOfCommonStock": { "auth_ref": [ "r98" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "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" } } }, "localname": "PaymentsForRepurchaseOfCommonStock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsOfDividendsCommonStock": { "auth_ref": [ "r98" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.", "label": "Payments of Ordinary Dividends, Common Stock", "negatedLabel": "Common stock dividends paid" } } }, "localname": "PaymentsOfDividendsCommonStock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock": { "auth_ref": [ "r98" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity.", "label": "Payments of Ordinary Dividends, Preferred Stock and Preference Stock", "negatedTerseLabel": "Preferred stock dividends paid" } } }, "localname": "PaymentsOfDividendsPreferredStockAndPreferenceStock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt": { "auth_ref": [ "r87", "r91", "r166" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Payments to Acquire Debt Securities, Available-for-sale", "negatedLabel": "Fixed maturity securities available for sale" } } }, "localname": "PaymentsToAcquireAvailableForSaleSecuritiesDebt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesEquity": { "auth_ref": [ "r92", "r166" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 7.0, "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" } } }, "localname": "PaymentsToAcquireAvailableForSaleSecuritiesEquity", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireBusinessesGross": { "auth_ref": [ "r92", "r335" ], "calculation": { "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails": { "order": 2.0, "parentTag": "us-gaap_BusinessCombinationConsiderationTransferred1", "weight": 1.0 } }, "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": "Aggregate cash consideration" } } }, "localname": "PaymentsToAcquireBusinessesGross", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired": { "auth_ref": [ "r92" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 11.0, "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", "negatedTerseLabel": "Subsidiaries, net of cash transferred" } } }, "localname": "PaymentsToAcquireBusinessesNetOfCashAcquired", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireMortgageNotesReceivable": { "auth_ref": [ "r91" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow from the purchase of receivables arising from the mortgage note on real estate.", "label": "Payments to Acquire Mortgage Notes Receivable", "negatedLabel": "Commercial mortgage loans on real estate" } } }, "localname": "PaymentsToAcquireMortgageNotesReceivable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireOtherInvestments": { "auth_ref": [ "r94" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 9.0, "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" } } }, "localname": "PaymentsToAcquireOtherInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": { "auth_ref": [ "r93" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "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 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" } } }, "localname": "PaymentsToAcquirePropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock": { "auth_ref": [ "r294" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefits" ], "xbrltype": "textBlockItemType" }, "us-gaap_PensionContributions": { "auth_ref": [ "r103" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit.", "label": "Payment for Pension Benefits", "terseLabel": "Cash contribution to qualified pension benefits plan" } } }, "localname": "PensionContributions", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionPlansDefinedBenefitMember": { "auth_ref": [ "r267", "r282", "r283", "r293" ], "lang": { "en-US": { "role": { "documentation": "Plan designed to provide participant with pension benefits. Includes, but is not limited to, defined benefit and defined contribution plans. Excludes other postretirement benefits.", "label": "Pension Plan [Member]", "terseLabel": "Pension Plan" } } }, "localname": "PensionPlansDefinedBenefitMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PhantomShareUnitsPSUsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Incentive compensation awarded to employees consisting of a stated number of phantom shares or units.", "label": "Phantom Share Units (PSUs) [Member]", "terseLabel": "PSUs" } } }, "localname": "PhantomShareUnitsPSUsMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PlanNameAxis": { "auth_ref": [ "r298", "r306" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationLongTermEquityIncentivePlansDetails", "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationLongTermEquityIncentivePlansDetails", "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PolicyholderBenefitsAndClaimsIncurredNet": { "auth_ref": [ "r440", "r484" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 1.0, "parentTag": "us-gaap_BenefitsLossesAndExpenses", "weight": 1.0 } }, "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", "verboseLabel": "Policyholder benefits" } } }, "localname": "PolicyholderBenefitsAndClaimsIncurredNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PortionAtFairValueFairValueDisclosureMember": { "auth_ref": [ "r385" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresCarryingValueAndFairValueOfFinancialInstrumentsThatAreNotRecognizedOrAreNotCarriedAtFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PreferredStockDividendRatePercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The percentage rate used to calculate dividend payments on preferred stock.", "label": "Preferred Stock, Dividend Rate, Percentage", "terseLabel": "Share interest rate" } } }, "localname": "PreferredStockDividendRatePercentage", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_PreferredStockDividendsAndOtherAdjustments": { "auth_ref": [ "r125", "r138" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 2.0, "parentTag": "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate value of preferred stock dividends and other adjustments necessary to derive net income apportioned to common stockholders.", "label": "Preferred Stock Dividends and Other Adjustments", "negatedTerseLabel": "Less: Preferred stock dividends" } } }, "localname": "PreferredStockDividendsAndOtherAdjustments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PreferredStockDividendsIncomeStatementImpact": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders.", "label": "Preferred Stock Dividends, Income Statement Impact", "negatedTerseLabel": "Less: Preferred stock dividends" } } }, "localname": "PreferredStockDividendsIncomeStatementImpact", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PreferredStockDividendsPerShareCashPaid": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Aggregate dividends paid during the period for each share of preferred stock outstanding.", "label": "Preferred Stock, Dividends, Per Share, Cash Paid", "terseLabel": "Dividends per share of preferred stock (in dollars per share)" } } }, "localname": "PreferredStockDividendsPerShareCashPaid", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited" ], "xbrltype": "perShareItemType" }, "us-gaap_PreferredStockLiquidationPreference": { "auth_ref": [ "r26", "r112", "r114", "r243", "r244" ], "lang": { "en-US": { "role": { "documentation": "The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.", "label": "Preferred Stock, Liquidation Preference Per Share", "terseLabel": "Liquidation price (in dollars per share)" } } }, "localname": "PreferredStockLiquidationPreference", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "perShareItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_PreferredStockParOrStatedValuePerShare": { "auth_ref": [ "r26" ], "lang": { "en-US": { "role": { "documentation": "Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.", "label": "Preferred Stock, Par or Stated Value Per Share", "terseLabel": "Preferred stock, par value (in dollars per share)" } } }, "localname": "PreferredStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_PreferredStockSharesAuthorized": { "auth_ref": [ "r26" ], "lang": { "en-US": { "role": { "documentation": "The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.", "label": "Preferred Stock, Shares Authorized", "terseLabel": "Preferred stock, shares authorized (in shares)" } } }, "localname": "PreferredStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesIssued": { "auth_ref": [ "r26" ], "lang": { "en-US": { "role": { "documentation": "Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.", "label": "Preferred Stock, Shares Issued", "terseLabel": "Preferred stock, shares issued (in shares)" } } }, "localname": "PreferredStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesOutstanding": { "auth_ref": [ "r26" ], "lang": { "en-US": { "role": { "documentation": "Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.", "label": "Preferred Stock, Shares Outstanding", "terseLabel": "Preferred stock, shares outstanding (in shares)" } } }, "localname": "PreferredStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockValue": { "auth_ref": [ "r26" ], "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 preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Preferred Stock, Value, Issued", "terseLabel": "6.50% Series D mandatory convertible preferred stock, $1.00 par value, 2,875,000 shares authorized, 2,875,000 issued and outstanding at June 30, 2018" } } }, "localname": "PreferredStockValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_PremiumsAndOtherReceivablesNet": { "auth_ref": [ "r475" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "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", "verboseLabel": "Premiums and accounts receivable, net" } } }, "localname": "PremiumsAndOtherReceivablesNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_PremiumsEarnedNet": { "auth_ref": [ "r426", "r476", "r487", "r501" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 1.0, "parentTag": "us-gaap_Revenues", "weight": 1.0 }, "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", "verboseLabel": "Net earned premiums" } } }, "localname": "PremiumsEarnedNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsAndExcessTaxBenefitFromSharebasedCompensation": { "auth_ref": [], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 11.0, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromDivestitureOfBusinesses": { "auth_ref": [ "r89" ], "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": "Cash consideration" } } }, "localname": "ProceedsFromDivestitureOfBusinesses", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfConvertiblePreferredStock": { "auth_ref": [ "r95" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from issuance of preferred stocks identified as being convertible into another form of financial instrument, typically the entity's common stock.", "label": "Proceeds from Issuance of Convertible Preferred Stock", "terseLabel": "Issuance of mandatory convertible preferred stock, net of issuance costs" } } }, "localname": "ProceedsFromIssuanceOfConvertiblePreferredStock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfLongTermDebt": { "auth_ref": [ "r96" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "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, net of issuance costs", "verboseLabel": "Net proceeds from issuance of debt" } } }, "localname": "ProceedsFromIssuanceOfLongTermDebt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited", "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt": { "auth_ref": [ "r96" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 9.0, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock": { "auth_ref": [ "r95" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation.", "label": "Proceeds from Issuance of Preferred Stock and Preference Stock", "terseLabel": "Net proceeds from sale of stock" } } }, "localname": "ProceedsFromIssuanceOfPreferredStockAndPreferenceStock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities": { "auth_ref": [ "r87", "r88", "r166" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale", "terseLabel": "Fixed maturity securities available for sale" } } }, "localname": "ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromMinorityShareholders": { "auth_ref": [ "r97" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10.0, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromPaymentsForOtherFinancingActivities": { "auth_ref": [ "r97", "r100", "r117" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleAndCollectionOfMortgageNotesReceivable": { "auth_ref": [ "r88" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 5.0, "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 loans on real estate" } } }, "localname": "ProceedsFromSaleAndCollectionOfMortgageNotesReceivable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt": { "auth_ref": [ "r87", "r88", "r166" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Proceeds from Sale of Debt Securities, Available-for-sale", "terseLabel": "Fixed maturity securities available for sale" } } }, "localname": "ProceedsFromSaleOfAvailableForSaleSecuritiesDebt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesEquity": { "auth_ref": [ "r89", "r166" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "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" } } }, "localname": "ProceedsFromSaleOfAvailableForSaleSecuritiesEquity", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfOtherInvestments": { "auth_ref": [ "r90" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "order": 3.0, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProfitLoss": { "auth_ref": [ "r67", "r70", "r101", "r154", "r158", "r342", "r345", "r346", "r358", "r359" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.", "label": "Net Income (Loss), Including Portion Attributable to Noncontrolling Interest", "terseLabel": "Net of tax" } } }, "localname": "ProfitLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentNet": { "auth_ref": [ "r17", "r18", "r219", "r463" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 7.0, "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", "verboseLabel": "Property and equipment, at cost less accumulated depreciation" } } }, "localname": "PropertyPlantAndEquipmentNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_QualifiedPlanMember": { "auth_ref": [ "r283" ], "lang": { "en-US": { "role": { "documentation": "Plan with tax-exempt status designed and operated in accordance with applicable tax provision of designated taxing authority. Taxing authority includes, but is not limited to, U.S. Internal Revenue Service (IRS). Includes, but is not limited to, defined benefit and defined contribution plans.", "label": "Qualified Plan [Member]", "terseLabel": "Qualified Pension Benefits" } } }, "localname": "QualifiedPlanMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_RealizedInvestmentGainsLosses": { "auth_ref": [ "r482" ], "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": "Less: Net realized gains related to sales of equity securities" } } }, "localname": "RealizedInvestmentGainsLosses", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentsUnrealizedGainsOnEquitySecuritiesDetails" ], "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": "Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]" } } }, "localname": "ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax": { "auth_ref": [ "r64", "r66" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": 1.0, "parentTag": "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax", "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": "Total before tax" } } }, "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax": { "auth_ref": [ "r64", "r66", "r73" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": -1.0 }, "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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", "negatedLabel": "Amounts reclassified from accumulated other comprehensive (loss) income", "negatedTotalLabel": "Total reclassifications for the period, net of tax" } } }, "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReclassificationFromAociCurrentPeriodTax": { "auth_ref": [ "r62", "r65", "r315" ], "calculation": { "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails": { "order": 2.0, "parentTag": "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss).", "label": "Reclassification from AOCI, Current Period, Tax", "negatedTerseLabel": "Provision for income taxes" } } }, "localname": "ReclassificationFromAociCurrentPeriodTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails" ], "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/2018-01-31", "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/2018-01-31", "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/2018-01-31", "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/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ReinsurancePayable": { "auth_ref": [ "r472" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments": { "auth_ref": [ "r441", "r492", "r494", "r497" ], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": 2.0, "parentTag": "us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet", "weight": -1.0 } }, "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", "negatedPeriodStartLabel": "Less: Reinsurance ceded and other", "periodEndLabel": "Plus: Reinsurance ceded and other", "terseLabel": "Reinsurance ceded and other" } } }, "localname": "ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReinsuranceRecoverables": { "auth_ref": [ "r441", "r465", "r491" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "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" } } }, "localname": "ReinsuranceRecoverables", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReinsuranceRecoverablesAllowance": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of valuation allowance for reinsurance recoverables. 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, Allowance", "terseLabel": "Allowance for doubtful accounts reinsurance recoverable" } } }, "localname": "ReinsuranceRecoverablesAllowance", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReinsuranceRecoverablesGross": { "auth_ref": [], "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" } } }, "localname": "ReinsuranceRecoverablesGross", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RepaymentsOfDebt": { "auth_ref": [ "r99" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited": { "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" } } }, "localname": "RepaymentsOfDebt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ResidentialMortgageBackedSecuritiesMember": { "auth_ref": [ "r176", "r272" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RetainedEarningsAccumulatedDeficit": { "auth_ref": [ "r30", "r249", "r458" ], "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" } } }, "localname": "RetainedEarningsAccumulatedDeficit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_RetirementPlanNameAxis": { "auth_ref": [ "r283" ], "lang": { "en-US": { "role": { "documentation": "Information by name of plan designed to provide retirement benefits. Includes, but is not limited to, legal name of defined benefit and defined contribution plans.", "label": "Retirement Plan Name [Axis]", "terseLabel": "Retirement Plan Name [Axis]" } } }, "localname": "RetirementPlanNameAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RetirementPlanNameDomain": { "auth_ref": [ "r283" ], "lang": { "en-US": { "role": { "documentation": "Name of plan designed to provide retirement benefits. Includes, but is not limited to, legal name of defined benefit and defined contribution plans.", "label": "Retirement Plan Name [Domain]", "terseLabel": "Retirement Plan Name [Domain]" } } }, "localname": "RetirementPlanNameDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RetirementPlanTaxStatusAxis": { "auth_ref": [ "r283" ], "lang": { "en-US": { "role": { "documentation": "Information by tax status of plan designed to provide retirement benefits. Includes, but is not limited to, defined benefit and defined contribution plans.", "label": "Retirement Plan Tax Status [Axis]", "terseLabel": "Retirement Plan Tax Status [Axis]" } } }, "localname": "RetirementPlanTaxStatusAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RetirementPlanTaxStatusDomain": { "auth_ref": [ "r283" ], "lang": { "en-US": { "role": { "documentation": "Tax status of plan designed to provide retirement benefits. Includes, but is not limited to, defined benefit and defined contribution plans.", "label": "Retirement Plan Tax Status [Domain]", "terseLabel": "Retirement Plan Tax Status [Domain]" } } }, "localname": "RetirementPlanTaxStatusDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RetirementPlanTypeAxis": { "auth_ref": [ "r267", "r268", "r282", "r283", "r293" ], "lang": { "en-US": { "role": { "documentation": "Information by type of retirement benefit plan. Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.", "label": "Retirement Plan Type [Axis]", "terseLabel": "Retirement Plan Type [Axis]" } } }, "localname": "RetirementPlanTypeAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RetirementPlanTypeDomain": { "auth_ref": [ "r267", "r268", "r282", "r283", "r293" ], "lang": { "en-US": { "role": { "documentation": "Type of plan designed to provide participants with retirement benefits. Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.", "label": "Retirement Plan Type [Domain]", "terseLabel": "Retirement Plan Type [Domain]" } } }, "localname": "RetirementPlanTypeDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RevenueFromContractWithCustomerAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Revenue from Contract with Customer [Abstract]" } } }, "localname": "RevenueFromContractWithCustomerAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax": { "auth_ref": [ "r258", "r259", "r260" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.", "label": "Revenue from Contract with Customer, Excluding Assessed Tax", "terseLabel": "Disaggregated fee revenues" } } }, "localname": "RevenueFromContractWithCustomerExcludingAssessedTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenueFromContractWithCustomerTextBlock": { "auth_ref": [ "r118", "r266" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.", "label": "Revenue from Contract with Customer [Text Block]", "terseLabel": "Contracts Revenues" } } }, "localname": "RevenueFromContractWithCustomerTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ContractRevenues" ], "xbrltype": "textBlockItemType" }, "us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems": { "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": "Revenue, Initial Application Period Cumulative Effect Transition [Line Items]", "terseLabel": "Revenue, Initial Application Period Cumulative Effect Transition [Line Items]" } } }, "localname": "RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of information when using transition method for cumulative effect in initial period of application for revenue from contract with customer.", "label": "Revenue, Initial Application Period Cumulative Effect Transition [Table]", "terseLabel": "Revenue, Initial Application Period Cumulative Effect Transition [Table]" } } }, "localname": "RevenueInitialApplicationPeriodCumulativeEffectTransitionTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ContractRevenuesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_Revenues": { "auth_ref": [ "r80", "r150", "r151", "r157" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "order": 2.0, "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", "totalLabel": "Total revenues" } } }, "localname": "Revenues", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenuesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Revenues [Abstract]", "terseLabel": "Revenues" } } }, "localname": "RevenuesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SaleOfStockNameOfTransactionDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Sale of the entity's stock, including, but not limited to, initial public offering (IPO) and private placement.", "label": "Sale of Stock [Domain]", "terseLabel": "Sale of Stock [Domain]" } } }, "localname": "SaleOfStockNameOfTransactionDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.", "label": "Sale of Stock, Number of Shares Issued in Transaction", "terseLabel": "Shares issued in period (in shares)" } } }, "localname": "SaleOfStockNumberOfSharesIssuedInTransaction", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_SaleOfStockPricePerShare": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.", "label": "Sale of Stock, Price Per Share", "terseLabel": "Public Offering price (in dollars per share)" } } }, "localname": "SaleOfStockPricePerShare", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock": { "auth_ref": [ "r64" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable": { "auth_ref": [ "r139" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "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": "Debt Securities, Available-for-sale [Line Items]", "terseLabel": "Debt Securities, Available-for-sale [Line Items]" } } }, "localname": "ScheduleOfAvailableForSaleSecuritiesLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.", "label": "Schedule of Available-for-sale Securities Reconciliation [Table Text Block]", "terseLabel": "Amortized Cost, Gross Unrealized Gains and Losses, Fair Value and OTTI" } } }, "localname": "ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAvailableForSaleSecuritiesTable": { "auth_ref": [ "r176", "r181", "r186", "r187", "r188", "r189", "r432", "r437" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable": { "auth_ref": [ "r324", "r325" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails", "http://www.assurant.com/role/AcquisitionsDetails", "http://www.assurant.com/role/AcquisitionsFairValueOfNetAssetsAcquiredAndLiabilitiesAssumedDetails", "http://www.assurant.com/role/AcquisitionsPriorYearAcquisitionDetails", "http://www.assurant.com/role/AcquisitionsPurchaseConsiderationDetails", "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock": { "auth_ref": [ "r324", "r325" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts.", "label": "Schedule of Business Acquisitions, by Acquisition [Table Text Block]", "terseLabel": "Schedule of Business Acquisitions, by Acquisition" } } }, "localname": "ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable": { "auth_ref": [ "r282", "r283", "r284", "r285", "r292" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsComponentsOfNetPeriodicBenefitCostDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock": { "auth_ref": [ "r140" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.", "label": "Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]", "terseLabel": "Net Income, Weighted Average Common Shares Used in Calculating Basic Earnings Per Common Share and Diluted EPS" } } }, "localname": "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock": { "auth_ref": [ "r370" ], "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 Hierarchy for Assets and Liabilities" } } }, "localname": "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresTables", "http://www.assurant.com/role/VariableInterestEntitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable": { "auth_ref": [ "r161" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtRatingAgenciesInterestRateDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable": { "auth_ref": [ "r205", "r210" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsFutureAmortizationDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock": { "auth_ref": [ "r205", "r210" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.", "label": "Schedule of Finite-Lived Intangible Assets [Table Text Block]", "terseLabel": "Schedule of Finite-Lived Intangible Assets" } } }, "localname": "ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsTables" ], "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 Securities [Line Items]", "terseLabel": "Gain (Loss) on Securities [Line Items]" } } }, "localname": "ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfGainLossOnInvestmentsTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about realized and unrealized gain (loss) on investment in security.", "label": "Schedule of Gain (Loss) on Securities [Table]", "terseLabel": "Schedule of Gain (Loss) on Securities [Table]" } } }, "localname": "ScheduleOfGainLossOnInvestmentsTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfGoodwillTable": { "auth_ref": [ "r200", "r202" ], "lang": { "en-US": { "role": { "documentation": "Schedule of goodwill and the changes during the year due to acquisition, sale, impairment or for other reasons.", "label": "Schedule of Goodwill [Table]", "terseLabel": "Schedule of Goodwill [Table]" } } }, "localname": "ScheduleOfGoodwillTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfGoodwillTextBlock": { "auth_ref": [ "r200", "r202" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable": { "auth_ref": [ "r214", "r216" ], "lang": { "en-US": { "role": { "documentation": "Schedule of assets, excluding financial assets and goodwill, lacking physical substance and exist in perpetuity.", "label": "Schedule of Indefinite-Lived Intangible Assets [Table]", "terseLabel": "Schedule of Indefinite-Lived Intangible Assets [Table]" } } }, "localname": "ScheduleOfIndefiniteLivedIntangibleAssetsTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock": { "auth_ref": [ "r214", "r216" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance and exist in perpetuity, by either major class or business segment.", "label": "Schedule of Indefinite-Lived Intangible Assets [Table Text Block]", "terseLabel": "Schedule of Indefinite-Lived Intangible Assets" } } }, "localname": "ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfInvestmentsTable": { "auth_ref": [ "r510" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense": { "auth_ref": [ "r498" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfNetBenefitCostsTableTextBlock": { "auth_ref": [ "r274" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/RetirementAndOtherEmployeeBenefitsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock": { "auth_ref": [ "r329" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree.", "label": "Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]", "terseLabel": "Schedule of Recognized Identified Assets Acquired and Liabilities Assumed" } } }, "localname": "ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable": { "auth_ref": [ "r149", "r154", "r155", "r156", "r200" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock": { "auth_ref": [ "r149", "r154", "r155", "r156", "r200" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": { "auth_ref": [ "r298", "r306" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationLongTermEquityIncentivePlansDetails", "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfStockByClassTable": { "auth_ref": [ "r44", "r115", "r239", "r240", "r241", "r243", "r244", "r245", "r246", "r247", "r248", "r249" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfVariableInterestEntitiesTable": { "auth_ref": [ "r351", "r352", "r354", "r355", "r356" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/ContractRevenuesNarrativeDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails", "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SegmentReportingAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Segment Reporting [Abstract]" } } }, "localname": "SegmentReportingAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_SegmentReportingDisclosureTextBlock": { "auth_ref": [ "r160" ], "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/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SellingGeneralAndAdministrativeExpense": { "auth_ref": [ "r81", "r191" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "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", "verboseLabel": "Underwriting, general and administrative expenses" } } }, "localname": "SellingGeneralAndAdministrativeExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SellingGeneralAndAdministrativeExpensesMember": { "auth_ref": [ "r85" ], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption encompassing selling, general and administrative expense.", "label": "Selling, General and Administrative Expenses [Member]", "terseLabel": "Underwriting, general and administrative expense" } } }, "localname": "SellingGeneralAndAdministrativeExpensesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsAcquisitionsAcquisitionRelatedCostsDetails", "http://www.assurant.com/role/DispositionsDetails" ], "xbrltype": "domainItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SeniorSubordinatedNotesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A senior subordinated note is a bond that takes priority over other debt securities sold by the issuer. In the event the issuer goes bankrupt, senior subordinated debt holders receive priority for [must receive] repayment [prior] relative to junior and unsecured (general) creditors. However senior subordinated notes are junior to Senior Notes and Senior bond holders.", "label": "Senior Subordinated Notes [Member]", "terseLabel": "Subordinated notes" } } }, "localname": "SeniorSubordinatedNotesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SeparateAccountAssets": { "auth_ref": [ "r450", "r502", "r508" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_SeparateAccountsLiability": { "auth_ref": [ "r457", "r502", "r503", "r508" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_SeriesDPreferredStockMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Outstanding nonredeemable series D preferred stock or outstanding series D preferred stock. 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": "Series D Preferred Stock [Member]", "terseLabel": "Series D MCPS", "verboseLabel": "Preferred Stock" } } }, "localname": "SeriesDPreferredStockMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "http://www.assurant.com/role/DebtNarrativeDetails", "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod": { "auth_ref": [ "r301" ], "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": "Granted (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r301" ], "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": "Weighted average grant date fair value per unit (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue": { "auth_ref": [ "r302" ], "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", "terseLabel": "Fair value of awards vested" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "monetaryItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationLongTermEquityIncentivePlansDetails", "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized": { "auth_ref": [ "r299" ], "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) (up to)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationLongTermEquityIncentivePlansDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": { "auth_ref": [ "r296", "r300" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortTermDebtTypeAxis": { "auth_ref": [ "r39" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShortTermDebtTypeDomain": { "auth_ref": [ "r37" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortTermInvestmentsMember": { "auth_ref": [ "r417", "r418", "r448", "r504" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseAggregateReconcilingItems": { "auth_ref": [ "r499" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of aggregate reconciling items for the reconciliation of the liability in the disclosure of claims development (in excess of) less than the liability for unpaid claims and claims adjustment expense for short-duration insurance contracts.", "label": "Short-duration Insurance Contracts, Liability for Unpaid Claims and Claim Adjustment Expense, Aggregate Reconciling Items", "terseLabel": "Favorable development" } } }, "localname": "ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseAggregateReconcilingItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StatementBusinessSegmentsAxis": { "auth_ref": [ "r1", "r154", "r200", "r222", "r226", "r227", "r500" ], "lang": { "en-US": { "role": { "documentation": "Information by business segments.", "label": "Segments [Axis]", "terseLabel": "Segments [Axis]" } } }, "localname": "StatementBusinessSegmentsAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AcquisitionsSupplementalProFormaInformationDetails", "http://www.assurant.com/role/ContractRevenuesNarrativeDetails", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsScheduleOfGoodwillDetails", "http://www.assurant.com/role/IncomeTaxesIncomeTaxesDetails", "http://www.assurant.com/role/ReservesNarrativeDetails", "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementClassOfStockAxis": { "auth_ref": [ "r25", "r26", "r27", "r242" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "http://www.assurant.com/role/DebtNarrativeDetails", "http://www.assurant.com/role/EarningsPerCommonShareNarrativeDetails", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementEquityComponentsAxis": { "auth_ref": [ "r46", "r242" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeReclassificationOutOfAccumulatedOtherComprehensiveIncomeDetails", "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical" ], "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/2018-01-31", "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/2018-01-31", "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/2018-01-31", "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/2018-01-31", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "http://www.assurant.com/role/ConsolidatedStatementsOfCashFlowsUnauditedParenthetical" ], "xbrltype": "stringItemType" }, "us-gaap_StockIssuedDuringPeriodValueNewIssues": { "auth_ref": [ "r26", "r27", "r242", "r249" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.", "label": "Stock Issued During Period, Value, New Issues", "terseLabel": "Issuance of preferred stock", "verboseLabel": "Issuance of common stock" } } }, "localname": "StockIssuedDuringPeriodValueNewIssues", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "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": "Amount remaining under total repurchase authorization" } } }, "localname": "StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquity": { "auth_ref": [ "r27", "r31", "r32", "r163" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest", "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", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance", "totalLabel": "Total Assurant, Inc. stockholders\u2019 equity" } } }, "localname": "StockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest": { "auth_ref": [ "r340", "r341", "r357" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/SegmentInformationFinancialInformationBySegmentDetails" ], "xbrltype": "domainItemType" }, "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SubsequentEventTypeAxis": { "auth_ref": [ "r402" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventTypeDomain": { "auth_ref": [ "r402" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/DispositionsDetails", "http://www.assurant.com/role/EquityTransactionsNarrativeDetails", "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SubsidiarySaleOfStockAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of sale of the entity's stock.", "label": "Sale of Stock [Axis]", "terseLabel": "Sale of Stock [Axis]" } } }, "localname": "SubsidiarySaleOfStockAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense": { "auth_ref": [ "r495" ], "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": "Current year" } } }, "localname": "SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense": { "auth_ref": [ "r495" ], "calculation": { "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails": { "order": 2.0, "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": "Prior years" } } }, "localname": "SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ReservesRollForwardOfClaimsAndBenefitsPayableDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TechnologyBasedIntangibleAssetsMember": { "auth_ref": [ "r330" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/StockBasedCompensationRestrictedAndPerformanceStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": { "auth_ref": [ "r407" ], "lang": { "en-US": { "role": { "documentation": "Instrument or contract that imposes a contractual obligation to deliver cash or another financial instrument or to exchange other financial instruments on potentially unfavorable terms and conveys a contractual right to receive cash or another financial instrument or to exchange other financial instruments on potentially favorable terms.", "label": "Financial Instruments [Domain]", "terseLabel": "Financial Instruments [Domain]" } } }, "localname": "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails", "http://www.assurant.com/role/InvestmentsNarrativeDetails", "http://www.assurant.com/role/InvestmentsNetRealizedGainsLossesIncludingOtherThanTemporaryImpairmentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TreasuryStockMember": { "auth_ref": [ "r45", "r251" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_TreasuryStockShares": { "auth_ref": [ "r45", "r251" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_TreasuryStockSharesAcquired": { "auth_ref": [ "r27", "r242", "r249" ], "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", "terseLabel": "Share repurchases (in shares)" } } }, "localname": "TreasuryStockSharesAcquired", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_TreasuryStockTextBlock": { "auth_ref": [ "r253" ], "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": "Equity Transactions" } } }, "localname": "TreasuryStockTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactions" ], "xbrltype": "textBlockItemType" }, "us-gaap_TreasuryStockValue": { "auth_ref": [ "r45", "r251", "r252" ], "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 shares at June 30, 2018 and December 31, 2017" } } }, "localname": "TreasuryStockValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_TreasuryStockValueAcquiredCostMethod": { "auth_ref": [ "r242", "r249", "r251" ], "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", "terseLabel": "Acquisition of common stock" } } }, "localname": "TreasuryStockValueAcquiredCostMethod", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EquityTransactionsNarrativeDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/AccumulatedOtherComprehensiveIncomeComponentsOfAccumulatedOtherComprehensiveIncomeNetOfTaxDetails", "http://www.assurant.com/role/ConsolidatedStatementOfStockholdersEquityUnaudited", "http://www.assurant.com/role/RecentAccountingPronouncementsAdditionalInformationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_USGovernmentAgenciesDebtSecuritiesMember": { "auth_ref": [ "r272", "r419" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_USStatesAndPoliticalSubdivisionsMember": { "auth_ref": [ "r272" ], "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": "States, municipalities and political subdivisions" } } }, "localname": "USStatesAndPoliticalSubdivisionsMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/FairValueDisclosuresFairValueForAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_USTreasuryAndGovernmentMember": { "auth_ref": [ "r272", "r419" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostGrossUnrealizedGainsAndLossesFairValueAndOttiDetails", "http://www.assurant.com/role/InvestmentsInvestmentCategoryAndDurationOfGrossUnrealizedLossesOnFixedMaturitySecuritiesAndEquitySecuritiesDetails" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_UnderlyingAssetClassDomain": { "auth_ref": [ "r367" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UndistributedEarnings": { "auth_ref": [ "r130", "r131", "r133", "r134", "r135" ], "calculation": { "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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", "totalLabel": "Undistributed earnings" } } }, "localname": "UndistributedEarnings", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnearnedPremiums": { "auth_ref": [ "r453" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrealizedGainLossOnInvestments": { "auth_ref": [ "r105" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of investments, not including unrealized gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, held at each balance sheet date and included in earnings for the period.", "label": "Unrealized Gain (Loss) on Investments", "terseLabel": "Total unrealized gains on equity securities held" } } }, "localname": "UnrealizedGainLossOnInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsInvestmentsUnrealizedGainsOnEquitySecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrealizedGainLossOnInvestmentsTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of unrealized gains and losses on investments.", "label": "Unrealized Gain (Loss) on Investments [Table Text Block]", "terseLabel": "Unrealized Gains on Equity Securities" } } }, "localname": "UnrealizedGainLossOnInvestmentsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/InvestmentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_UnsecuredDebt": { "auth_ref": [ "r23", "r414", "r456" ], "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" } } }, "localname": "UnsecuredDebt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ValueOfBusinessAcquiredVOBA": { "auth_ref": [ "r443", "r470" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 10.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after accumulated amortization, of present value of future profits of insurance contract acquired in business combination.", "label": "Present Value of Future Insurance Profits, Net", "terseLabel": "Value of business acquired" } } }, "localname": "ValueOfBusinessAcquiredVOBA", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/GoodwillAndOtherIntangibleAssetsVobaAndOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis": { "auth_ref": [ "r351", "r352", "r355" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntitiesCarryingValueOfLevel3AssetsDetails", "http://www.assurant.com/role/VariableInterestEntitiesFairValueOfFinancialAssetsAndLiabilitiesDetails", "http://www.assurant.com/role/VariableInterestEntitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets": { "auth_ref": [ "r350" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 14.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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": "Total assets", "totalLabel": "Total assets", "verboseLabel": "Assets of consolidated investment entities" } } }, "localname": "VariableInterestEntityConsolidatedCarryingAmountAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "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": [ "r350" ], "calculation": { "http://www.assurant.com/role/ConsolidatedBalanceSheets": { "order": 11.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 }, "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical": { "order": null, "parentTag": null, "root": true, "weight": null } }, "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", "totalLabel": "Total liabilities", "verboseLabel": "Liabilities of consolidated investment entities" } } }, "localname": "VariableInterestEntityConsolidatedCarryingAmountLiabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedBalanceSheets", "http://www.assurant.com/role/ConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableInterestEntityDisclosureTextBlock": { "auth_ref": [ "r360" ], "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/VariableInterestEntities" ], "xbrltype": "textBlockItemType" }, "us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount": { "auth_ref": [ "r353" ], "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/2018-01-31", "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/2018-01-31", "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": [ "r351" ], "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]", "verboseLabel": "Consolidated investment entities" } } }, "localname": "VariableInterestEntityPrimaryBeneficiaryMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "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_VariableRateAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of variable rate.", "label": "Variable Rate [Axis]", "terseLabel": "Variable Rate [Axis]" } } }, "localname": "VariableRateAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_VariableRateDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Interest rate that fluctuates over time as a result of an underlying benchmark interest rate or index.", "label": "Variable Rate [Domain]", "terseLabel": "Variable Rate [Domain]" } } }, "localname": "VariableRateDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/DebtNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment": { "auth_ref": [ "r137" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]", "terseLabel": "Incremental common shares from:" } } }, "localname": "WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": { "auth_ref": [ "r126", "r137" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": { "auth_ref": [ "r124", "r137" ], "calculation": { "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited": { "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 per share calculations (in shares)", "verboseLabel": "Weighted average shares outstanding used in basic earnings per share (in shares)" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingBasic", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://www.assurant.com/role/ConsolidatedStatementsOfOperationsUnaudited", "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/2018-01-31", "presentation": [ "http://www.assurant.com/role/EarningsPerCommonShareNetIncomeWeightedAverageCommonSharesUsedInCalculatingBasicEarningsPerCommonShareAndDilutedEpsDetails" ], "xbrltype": "stringItemType" } }, "unitCount": 8 } }, "std_ref": { "r0": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222160&loc=SL51721533-107759" }, "r1": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760" }, "r10": { "Name": "Accounting Standards Codification", "Paragraph": "5C", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721675-107760" }, "r100": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585" }, "r101": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3000-108585" }, "r102": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3521-108585" }, "r103": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585" }, "r104": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585" }, "r105": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585" }, "r106": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585" }, "r107": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3044-108585" }, "r108": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3098-108585" }, "r109": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586" }, "r11": { "Name": "Accounting Standards Codification", "Paragraph": "5D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721677-107760" }, "r110": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586" }, "r111": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586" }, "r112": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(d)(1))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r113": { "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" }, "r114": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(d)(1))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r115": { "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" }, "r116": { "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" }, "r117": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-04(a))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690" }, "r118": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "235", "URI": "http://asc.fasb.org/topic&trid=2122369" }, "r119": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794" }, "r12": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760" }, "r120": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794" }, "r121": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22580-107794" }, "r122": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794" }, "r123": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "250", "URI": "http://asc.fasb.org/topic&trid=2122394" }, "r124": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1448-109256" }, "r125": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1377-109256" }, "r126": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1505-109256" }, "r127": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1252-109256" }, "r128": { "Name": "Accounting Standards Codification", "Paragraph": "28A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1500-109256" }, "r129": { "Name": "Accounting Standards Codification", "Paragraph": "40", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1930-109256" }, "r13": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/subtopic&trid=2122178" }, "r130": { "Name": "Accounting Standards Codification", "Paragraph": "60", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e2740-109256" }, "r131": { "Name": "Accounting Standards Codification", "Paragraph": "60A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=SL5780132-109256" }, "r132": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=SL5780133-109256" }, "r133": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=SL5780133-109256" }, "r134": { "Name": "Accounting Standards Codification", "Paragraph": "65", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e2793-109256" }, "r135": { "Name": "Accounting Standards Codification", "Paragraph": "66", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e2814-109256" }, "r136": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1337-109256" }, "r137": { "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" }, "r138": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257" }, "r139": { "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" }, "r14": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765" }, "r140": { "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" }, "r141": { "Name": "Accounting Standards Codification", "Paragraph": "52", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109256448&loc=d3e4984-109258" }, "r142": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "260", "URI": "http://asc.fasb.org/topic&trid=2144383" }, "r143": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r144": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592" }, "r145": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592" }, "r146": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592" }, "r147": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "275", "URI": "http://asc.fasb.org/topic&trid=2134479" }, "r148": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8657-108599" }, "r149": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8721-108599" }, "r15": { "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" }, "r150": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r151": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r152": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r153": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r154": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r155": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599" }, "r156": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599" }, "r157": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599" }, "r158": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599" }, "r159": { "Name": "Accounting Standards Codification", "Paragraph": "40", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e9031-108599" }, "r16": { "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" }, "r160": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "280", "URI": "http://asc.fasb.org/topic&trid=2134510" }, "r161": { "Name": "Accounting Standards Codification", "Paragraph": "29", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953659-111524" }, "r162": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5066-111524" }, "r163": { "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" }, "r164": { "Name": "Accounting Standards Codification", "Paragraph": "35", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=115930623&loc=d3e25362-111560" }, "r165": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=109979856&loc=d3e26610-111562" }, "r166": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=109979856&loc=d3e26853-111562" }, "r167": { "Name": "Accounting Standards Codification", "Paragraph": "8A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=109979856&loc=SL6284422-111562" }, "r168": { "Name": "Accounting Standards Codification", "Paragraph": "9A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=109979856&loc=SL6284427-111562" }, "r169": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27405-111563" }, "r17": { "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" }, "r170": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=SL6283291-111563" }, "r171": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r172": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r173": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r174": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r175": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r176": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r177": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563" }, "r178": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563" }, "r179": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563" }, "r18": { "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" }, "r180": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563" }, "r181": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563" }, "r182": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r183": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r184": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563" }, "r185": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563" }, "r186": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563" }, "r187": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563" }, "r188": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27340-111563" }, "r189": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)-(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563" }, "r19": { "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" }, "r190": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "320", "URI": "http://asc.fasb.org/topic&trid=2196928" }, "r191": { "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" }, "r192": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266" }, "r193": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266" }, "r194": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975" }, "r195": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267" }, "r196": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267" }, "r197": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267" }, "r198": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(f)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267" }, "r199": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267" }, "r2": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760" }, "r20": { "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" }, "r200": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267" }, "r201": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267" }, "r202": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267" }, "r203": { "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" }, "r204": { "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" }, "r205": { "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" }, "r206": { "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" }, "r207": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275" }, "r208": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(d)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275" }, "r209": { "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" }, "r21": { "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" }, "r210": { "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" }, "r211": { "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" }, "r212": { "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" }, "r213": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(3)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r214": { "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" }, "r215": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(d)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r216": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b),(d)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275" }, "r217": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "350", "URI": "http://asc.fasb.org/topic&trid=2144416" }, "r218": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228" }, "r219": { "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" }, "r22": { "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" }, "r220": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230" }, "r221": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230" }, "r222": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230" }, "r223": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230" }, "r224": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=SL51724579-110230" }, "r225": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "360", "URI": "http://asc.fasb.org/topic&trid=2155823" }, "r226": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869" }, "r227": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 5.P.4(d))", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747" }, "r228": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "440", "URI": "http://asc.fasb.org/topic&trid=2144648" }, "r229": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349" }, "r23": { "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" }, "r230": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349" }, "r231": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "450", "URI": "http://asc.fasb.org/topic&trid=2127136" }, "r232": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=82913062&loc=d3e11019-110243" }, "r233": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=82913062&loc=d3e11049-110243" }, "r234": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248" }, "r235": { "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" }, "r236": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870" }, "r237": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870" }, "r238": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "470", "URI": "http://asc.fasb.org/topic&trid=2208564" }, "r239": { "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" }, "r24": { "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" }, "r240": { "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" }, "r241": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21553-112644" }, "r242": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644" }, "r243": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644" }, "r244": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21484-112644" }, "r245": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21488-112644" }, "r246": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644" }, "r247": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644" }, "r248": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644" }, "r249": { "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" }, "r25": { "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" }, "r250": { "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" }, "r251": { "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" }, "r252": { "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" }, "r253": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "30", "Topic": "505", "URI": "http://asc.fasb.org/subtopic&trid=2208821" }, "r254": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "50", "Topic": "505", "URI": "http://asc.fasb.org/subtopic&trid=2208855" }, "r255": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044" }, "r256": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=82913815&loc=SL49130532-203044" }, "r257": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=82913815&loc=SL49130533-203044" }, "r258": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045" }, "r259": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045" }, "r26": { "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" }, "r260": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045" }, "r261": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045" }, "r262": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045" }, "r263": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=108792157&loc=SL49130690-203046-203046" }, "r264": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(i)(1)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048" }, "r265": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048" }, "r266": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "606", "URI": "http://asc.fasb.org/topic&trid=49130388" }, "r267": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "15", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "712", "URI": "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664" }, "r268": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "15", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "712", "URI": "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664" }, "r269": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=109237824&loc=d3e1703-114919" }, "r27": { "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" }, "r270": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r271": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r272": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(ii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r273": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(01)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r274": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r275": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r276": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r277": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r278": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(7)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r279": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(i),(j)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r28": { "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" }, "r280": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(j)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r281": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(k)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r282": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r283": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2410-114920" }, "r284": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2417-114920" }, "r285": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2439-114920" }, "r286": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r287": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r288": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r289": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r29": { "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" }, "r290": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(7)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r291": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r292": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921" }, "r293": { "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" }, "r294": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "715", "URI": "http://asc.fasb.org/topic&trid=2235017" }, "r295": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=79507207&loc=d3e4534-113899" }, "r296": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901" }, "r297": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901" }, "r298": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901" }, "r299": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(3)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r3": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=d3e1474-107760" }, "r30": { "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" }, "r300": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r301": { "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=109197908&loc=d3e5070-113901" }, "r302": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r303": { "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=109197908&loc=d3e5070-113901" }, "r304": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(1)(ii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r305": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r306": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r307": { "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=115993241&loc=d3e301413-122809" }, "r308": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109196918&loc=d3e11149-113907" }, "r309": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109196918&loc=d3e11178-113907" }, "r31": { "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" }, "r310": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "718", "URI": "http://asc.fasb.org/topic&trid=2228938" }, "r311": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319" }, "r312": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319" }, "r313": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319" }, "r314": { "Name": "Accounting Standards Codification", "Paragraph": "217", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=109238393&loc=d3e36027-109320" }, "r315": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=109238882&loc=d3e39076-109324" }, "r316": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324" }, "r317": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "740", "URI": "http://asc.fasb.org/topic&trid=2144680" }, "r318": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460" }, "r319": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463" }, "r32": { "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" }, "r320": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(1)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463" }, "r321": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(2)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463" }, "r322": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(3)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463" }, "r323": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(4)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463" }, "r324": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463" }, "r325": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463" }, "r326": { "Name": "Accounting Standards Codification", "Paragraph": "37", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=108330185&loc=d3e2207-128464" }, "r327": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472" }, "r328": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)(1)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472" }, "r329": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472" }, "r33": { "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" }, "r330": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=77890550&loc=d3e5227-128473" }, "r331": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "25", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476" }, "r332": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "30", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477" }, "r333": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "30", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477" }, "r334": { "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" }, "r335": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(1)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479" }, "r336": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(3)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479" }, "r337": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(4)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479" }, "r338": { "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" }, "r339": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "805", "URI": "http://asc.fasb.org/topic&trid=2303972" }, "r34": { "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" }, "r340": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4568447-111683" }, "r341": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4568740-111683" }, "r342": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683" }, "r343": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569643-111683" }, "r344": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569655-111683" }, "r345": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r346": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r347": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r348": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(3)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r349": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c),(3)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r35": { "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" }, "r350": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108788376&loc=d3e5710-111685" }, "r351": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108788376&loc=d3e5710-111685" }, "r352": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108788376&loc=d3e5728-111685" }, "r353": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108788376&loc=SL6759159-111685" }, "r354": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108788376&loc=SL6759159-111685" }, "r355": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108788376&loc=d3e5747-111685" }, "r356": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108788376&loc=SL6228884-111685" }, "r357": { "Name": "Accounting Standards Codification", "Paragraph": "4I", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=84234705&loc=SL4590271-111686" }, "r358": { "Name": "Accounting Standards Codification", "Paragraph": "4J", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=84234705&loc=SL4591551-111686" }, "r359": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=84234705&loc=SL4591552-111686" }, "r36": { "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" }, "r360": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "810", "URI": "http://asc.fasb.org/topic&trid=2197479" }, "r361": { "Name": "Accounting Standards Codification", "Paragraph": "83", "Publisher": "FASB", "Section": "15", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109257184&loc=d3e34841-113949" }, "r362": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959" }, "r363": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959" }, "r364": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959" }, "r365": { "Name": "Accounting Standards Codification", "Paragraph": "4C", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959" }, "r366": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959" }, "r367": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5708775-113959" }, "r368": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5708775-113959" }, "r369": { "Name": "Accounting Standards Codification", "Paragraph": "182", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109975725&loc=SL5629052-113961" }, "r37": { "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" }, "r370": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258" }, "r371": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r372": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r373": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r374": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r375": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r376": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r377": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r378": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r379": { "Name": "Accounting Standards Codification", "Paragraph": "2C", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=SL7498348-110258" }, "r38": { "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" }, "r380": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19279-110258" }, "r381": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19279-110258" }, "r382": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=SL6742756-110258" }, "r383": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "820", "URI": "http://asc.fasb.org/topic&trid=2155941" }, "r384": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740" }, "r385": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=75026489&loc=d3e13220-108610" }, "r386": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611" }, "r387": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=109250915&loc=d3e13467-108611" }, "r388": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=109250915&loc=d3e13476-108611" }, "r389": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611" }, "r39": { "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" }, "r390": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611" }, "r391": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=75032774&loc=SL75039408-165497" }, "r392": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "825", "URI": "http://asc.fasb.org/topic&trid=2134543" }, "r393": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "230", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906" }, "r394": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(b,c)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=109240241&loc=d3e32211-110900" }, "r395": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(c)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=109240241&loc=d3e32211-110900" }, "r396": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391" }, "r397": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399" }, "r398": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399" }, "r399": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399" }, "r4": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721659-107760" }, "r40": { "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" }, "r400": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400" }, "r401": { "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" }, "r402": { "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" }, "r403": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109247956&loc=d3e107207-111719" }, "r404": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109247956&loc=d3e107207-111719" }, "r405": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109247956&loc=d3e107207-111719" }, "r406": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109247956&loc=d3e107207-111719" }, "r407": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746" }, "r408": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "340", "Topic": "928", "URI": "http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004" }, "r409": { "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" }, "r41": { "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" }, "r410": { "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" }, "r411": { "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" }, "r412": { "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" }, "r413": { "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" }, "r414": { "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" }, "r415": { "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" }, "r416": { "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" }, "r417": { "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" }, "r418": { "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" }, "r419": { "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" }, "r42": { "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" }, "r420": { "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" }, "r421": { "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" }, "r422": { "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" }, "r423": { "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" }, "r424": { "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" }, "r425": { "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" }, "r426": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(13)(c))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r427": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(13)(g))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r428": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(15))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r429": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(22))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r43": { "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" }, "r430": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r431": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.9)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r432": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62557-112803" }, "r433": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(a)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803" }, "r434": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803" }, "r435": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(c)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803" }, "r436": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(d)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803" }, "r437": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803" }, "r438": { "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" }, "r439": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "470", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823" }, "r44": { "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" }, "r440": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99397103&loc=d3e6811-158387" }, "r441": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99397103&loc=d3e6824-158387" }, "r442": { "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" }, "r443": { "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" }, "r444": { "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" }, "r445": { "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" }, "r446": { "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" }, "r447": { "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" }, "r448": { "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" }, "r449": { "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" }, "r45": { "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" }, "r450": { "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" }, "r451": { "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" }, "r452": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(13)(a)(1))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r453": { "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" }, "r454": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(15)(5))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r455": { "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" }, "r456": { "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" }, "r457": { "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" }, "r458": { "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" }, "r459": { "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" }, "r46": { "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" }, "r460": { "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" }, "r461": { "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" }, "r462": { "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" }, "r463": { "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" }, "r464": { "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" }, "r465": { "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" }, "r466": { "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" }, "r467": { "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" }, "r468": { "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" }, "r469": { "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" }, "r47": { "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" }, "r470": { "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" }, "r471": { "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" }, "r472": { "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" }, "r473": { "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" }, "r474": { "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" }, "r475": { "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" }, "r476": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(1))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r477": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(18))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r478": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(19))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r479": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(2))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r48": { "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" }, "r480": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(3)(d))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r481": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(8))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r482": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04.3(a))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r483": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04.4)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r484": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04.5)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r485": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04.5,6,7)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r486": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04.7)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r487": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.12-17(Column E))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915" }, "r488": { "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" }, "r489": { "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" }, "r49": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r490": { "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" }, "r491": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "310", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99404803&loc=d3e21409-158489" }, "r492": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "45", "SubTopic": "310", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99404803&loc=d3e21412-158489" }, "r493": { "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" }, "r494": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437" }, "r495": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(b)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437" }, "r496": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(c)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437" }, "r497": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(cc)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437" }, "r498": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437" }, "r499": { "Name": "Accounting Standards Codification", "Paragraph": "4C", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99384497&loc=SL65671315-158438" }, "r5": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721663-107760" }, "r50": { "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=114867106&loc=SL7669646-108580" }, "r500": { "Name": "Accounting Standards Codification", "Paragraph": "4H", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99384497&loc=SL65671331-158438" }, "r501": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "605", "Subparagraph": "(c)(3)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547" }, "r502": { "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" }, "r503": { "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" }, "r504": { "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" }, "r505": { "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" }, "r506": { "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" }, "r507": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "825", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99380617&loc=SL75241803-196195" }, "r508": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "944", "URI": "http://asc.fasb.org/topic&trid=2303980" }, "r509": { "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" }, "r51": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r510": { "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" }, "r511": { "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" }, "r512": { "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" }, "r513": { "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" }, "r514": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column A))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010" }, "r515": { "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" }, "r516": { "Name": "Regulation 12B", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b-2" }, "r517": { "Article": "12", "Footnote": "2", "Name": "Regulation S-X (SX)", "Number": "210", "Publisher": "SEC", "Section": "12" }, "r518": { "Article": "12", "Name": "Regulation S-X (SX)", "Number": "210", "Publisher": "SEC", "Section": "12", "Sentence": "Column A" }, "r519": { "Article": "6", "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "(c)", "Publisher": "SEC", "Section": "10", "Subparagraph": "(1)" }, "r52": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r53": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r54": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r55": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r56": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r57": { "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=114867106&loc=SL7669646-108580" }, "r58": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i-k)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r59": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(j)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r6": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721665-107760" }, "r60": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r61": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580" }, "r62": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=d3e640-108580" }, "r63": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=d3e681-108580" }, "r64": { "Name": "Accounting Standards Codification", "Paragraph": "14A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580" }, "r65": { "Name": "Accounting Standards Codification", "Paragraph": "17A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL34724391-108580" }, "r66": { "Name": "Accounting Standards Codification", "Paragraph": "17B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL34724394-108580" }, "r67": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669619-108580" }, "r68": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669619-108580" }, "r69": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669619-108580" }, "r7": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721671-107760" }, "r70": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669625-108580" }, "r71": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669625-108580" }, "r72": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=d3e557-108580" }, "r73": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=109228884&loc=d3e1436-108581" }, "r74": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(210.5-03(11))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r75": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(10))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r76": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(20))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r77": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(21))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r78": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(7)(c))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r79": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(9)(a))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r8": { "Name": "Accounting Standards Codification", "Paragraph": "5B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760" }, "r80": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.1)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r81": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.4)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r82": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.4,6)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r83": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.7(c),9(a))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r84": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.8)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r85": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r86": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "220", "URI": "http://asc.fasb.org/topic&trid=2134417" }, "r87": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3151-108585" }, "r88": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585" }, "r89": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585" }, "r9": { "Name": "Accounting Standards Codification", "Paragraph": "5C", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721675-107760" }, "r90": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585" }, "r91": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585" }, "r92": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585" }, "r93": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585" }, "r94": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585" }, "r95": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585" }, "r96": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585" }, "r97": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585" }, "r98": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585" }, "r99": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585" } }, "version": "2.0" }