{
 "instance": {
  "bhinsurance-1231201910k.htm": {
   "axisCustom": 5,
   "axisStandard": 46,
   "contextCount": 935,
   "dts": {
    "calculationLink": {
     "local": [
      "bhl-20191231_cal.xml"
     ]
    },
    "definitionLink": {
     "local": [
      "bhl-20191231_def.xml"
     ],
     "remote": [
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-eedm-def-2019-01-31.xml",
      "http://xbrl.fasb.org/srt/2019/elts/srt-eedm1-def-2019-01-31.xml"
     ]
    },
    "inline": {
     "local": [
      "bhinsurance-1231201910k.htm"
     ]
    },
    "labelLink": {
     "local": [
      "bhl-20191231_lab.xml"
     ],
     "remote": [
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-doc-2019-01-31.xml",
      "https://xbrl.sec.gov/dei/2019/dei-doc-2019-01-31.xml",
      "http://xbrl.fasb.org/srt/2019/elts/srt-doc-2019-01-31.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "bhl-20191231_pre.xml"
     ]
    },
    "referenceLink": {
     "remote": [
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-ref-2019-01-31.xml",
      "http://xbrl.fasb.org/srt/2019/elts/srt-ref-2019-01-31.xml",
      "https://xbrl.sec.gov/dei/2019/dei-ref-2019-01-31.xml"
     ]
    },
    "schema": {
     "local": [
      "bhl-20191231.xsd"
     ],
     "remote": [
      "http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd",
      "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/dtr/type/numeric-2009-12-16.xsd",
      "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-roles-2019-01-31.xsd",
      "https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd",
      "http://www.xbrl.org/lrr/arcrole/factExplanatory-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",
      "https://xbrl.sec.gov/currency/2019/currency-2019-01-31.xsd",
      "https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd",
      "https://xbrl.sec.gov/exch/2019/exch-2019-01-31.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/stpr/2018/stpr-2018-01-31.xsd",
      "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-parts-codification-2019-01-31.xsd",
      "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd"
     ]
    }
   },
   "elementCount": 1052,
   "entityCount": 1,
   "hidden": {
    "http://fasb.org/us-gaap/2019-01-31": 42,
    "http://www.brighthousefinancial.com/20191231": 8,
    "http://xbrl.sec.gov/dei/2019-01-31": 6,
    "total": 56
   },
   "keyCustom": 87,
   "keyStandard": 561,
   "memberCustom": 79,
   "memberStandard": 117,
   "nsprefix": "bhl",
   "nsuri": "http://www.brighthousefinancial.com/20191231",
   "report": {
    "R1": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "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.brighthousefinancial.com/role/DocumentAndEntityInformation",
     "shortName": "Document and Entity Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R10": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AccountingChangesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2103100 - Disclosure - Organizational Changes",
     "role": "http://www.brighthousefinancial.com/role/OrganizationalChanges",
     "shortName": "Organizational Changes",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AccountingChangesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R100": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:LongTermDebt",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2413403 - Disclosure - Long-term Debt (Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails",
     "shortName": "Long-term Debt (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R101": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:StatutoryAccountingPracticesDisclosureTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:StatutoryAccountingPracticesStatutoryNetIncomeAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2414402 - Disclosure - Equity (Statutory Net Income) (Details)",
     "role": "http://www.brighthousefinancial.com/role/EquityStatutoryNetIncomeDetails",
     "shortName": "Equity (Statutory Net Income) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:StatutoryAccountingPracticesDisclosureTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:StatutoryAccountingPracticesStatutoryNetIncomeAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R102": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:StatutoryAccountingPracticesDisclosureTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2414403 - Disclosure - Equity Equity (Statutory Capital and Surplus) (Details)",
     "role": "http://www.brighthousefinancial.com/role/EquityEquityStatutoryCapitalAndSurplusDetails",
     "shortName": "Equity Equity (Statutory Capital and Surplus) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:StatutoryAccountingPracticesDisclosureTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R103": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "bhl:ScheduleofDividendPaymentRestrictionsTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:PaymentsOfDividends",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2414404 - Disclosure - Equity Equity (Dividend Restrictions) (Details)",
     "role": "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails",
     "shortName": "Equity Equity (Dividend Restrictions) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "bhl:ScheduleofDividendPaymentRestrictionsTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:PaymentsOfDividends",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R104": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2017Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2414405 - Disclosure - Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details)",
     "role": "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
     "shortName": "Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R105": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:GainLossOnInvestmentsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:GainLossOnInvestments",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2414406 - Disclosure - Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details)",
     "role": "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails",
     "shortName": "Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R106": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:ProceedsFromContributionsFromParent",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2414407 - Disclosure - Equity (Capital Transactions - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/EquityCapitalTransactionsNarrativeDetails",
     "shortName": "Equity (Capital Transactions - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R107": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember_srt_RangeAxis_srt_MinimumMember",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DescriptionOfRegulatoryCapitalRequirementsUnderInsuranceRegulations",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2414408 - Disclosure - Equity (Statutory Equity & Income - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
     "shortName": "Equity (Statutory Equity & Income - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember_srt_RangeAxis_srt_MinimumMember",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DescriptionOfRegulatoryCapitalRequirementsUnderInsuranceRegulations",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R108": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_dei_LegalEntityAxis_bhl_BrighthouseReinsuranceCompanyofDelawareMember",
      "decimals": "-8",
      "first": true,
      "lang": null,
      "name": "us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2414409 - Disclosure - Equity Equity (Captive Equity and Income - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/EquityEquityCaptiveEquityAndIncomeNarrativeDetails",
     "shortName": "Equity Equity (Captive Equity and Income - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_dei_LegalEntityAxis_bhl_BrighthouseReinsuranceCompanyofDelawareMember",
      "decimals": "-8",
      "first": true,
      "lang": null,
      "name": "us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R109": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_dei_LegalEntityAxis_bhl_BrighthouseReinsuranceCompanyofDelawareMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:Dividends",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2414410 - Disclosure - Equity (Dividend Restrictions - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails",
     "shortName": "Equity (Dividend Restrictions - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_dei_LegalEntityAxis_bhl_BrighthouseReinsuranceCompanyofDelawareMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:Dividends",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R11": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:InsuranceDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2106100 - Disclosure - Insurance",
     "role": "http://www.brighthousefinancial.com/role/Insurance",
     "shortName": "Insurance",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:InsuranceDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R110": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ProductOrServiceAxis_us-gaap_DistributionServiceMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2415402 - Disclosure - Other Revenues and Other Expenses (Other Revenues-Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherRevenuesNarrativeDetails",
     "shortName": "Other Revenues and Other Expenses (Other Revenues-Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ProductOrServiceAxis_us-gaap_DistributionServiceMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R111": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:LaborAndRelatedExpense",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2415403 - Disclosure - Other Revenues and Other Expenses (Other Expenses) (Details)",
     "role": "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails",
     "shortName": "Other Revenues and Other Expenses (Other Expenses) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:LaborAndRelatedExpense",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R112": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:CurrentFederalTaxExpenseBenefit",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2416402 - Disclosure - Income Tax (Provision for Income Tax from Continuing Operations) (Details)",
     "role": "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails",
     "shortName": "Income Tax (Provision for Income Tax from Continuing Operations) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:CurrentFederalTaxExpenseBenefit",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R113": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2416403 - Disclosure - Income Tax (Reconciliation of Income Tax Provision between US Statutory Rate and As Reported for Continuing Operations) (Details)",
     "role": "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails",
     "shortName": "Income Tax (Reconciliation of Income Tax Provision between US Statutory Rate and As Reported for Continuing Operations) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R114": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredTaxAssetsInvestments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2416404 - Disclosure - Income Tax (Net Deferred Income Tax Assets and Liabilities) (Details)",
     "role": "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails",
     "shortName": "Income Tax (Net Deferred Income Tax Assets and Liabilities) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredTaxAssetsInvestments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R115": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:SummaryOfOperatingLossCarryforwardsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:OperatingLossCarryforwards",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2416405 - Disclosure - Income Tax (Net Operating Loss Carryforwards) (Details)",
     "role": "http://www.brighthousefinancial.com/role/IncomeTaxNetOperatingLossCarryforwardsDetails",
     "shortName": "Income Tax (Net Operating Loss Carryforwards) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:SummaryOfOperatingLossCarryforwardsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:OperatingLossCarryforwards",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R116": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:TaxCreditCarryforwardAmount",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2416406 - Disclosure - Income Tax (Tax Credit Carryforwards) (Details)",
     "role": "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails",
     "shortName": "Income Tax (Tax Credit Carryforwards) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:SummaryOfTaxCreditCarryforwardsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_IncomeTaxAuthorityAxis_us-gaap_ForeignCountryMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:TaxCreditCarryforwardAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R117": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:SummaryOfIncomeTaxContingenciesTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2018Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:UnrecognizedTaxBenefits",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2416407 - Disclosure - Income Tax (Reconciliation of Unrecognized Tax Benefits) (Details)",
     "role": "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfUnrecognizedTaxBenefitsDetails",
     "shortName": "Income Tax (Reconciliation of Unrecognized Tax Benefits) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:SummaryOfIncomeTaxContingenciesTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2016Q4",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:UnrecognizedTaxBenefits",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R118": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2018Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:PriorPeriodReclassificationAdjustment",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2416408 - Disclosure - Income Tax (Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails",
     "shortName": "Income Tax (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2018Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:PriorPeriodReclassificationAdjustment",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R119": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_RangeAxis_srt_MinimumMember",
      "decimals": "0",
      "first": true,
      "lang": null,
      "name": "us-gaap:LossContingencyRangeOfPossibleLossPortionNotAccrued",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2417401 - Disclosure - Contingencies, Commitments and Guarantees (Contingencies - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesContingenciesNarrativeDetails",
     "shortName": "Contingencies, Commitments and Guarantees (Contingencies - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_RangeAxis_srt_MinimumMember",
      "decimals": "0",
      "first": true,
      "lang": null,
      "name": "us-gaap:LossContingencyRangeOfPossibleLossPortionNotAccrued",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R12": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IntangibleAssetsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2107100 - Disclosure - Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles",
     "role": "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangibles",
     "shortName": "Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IntangibleAssetsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R120": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_FinancialInstrumentAxis_us-gaap_LoanOriginationCommitmentsMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2417402 - Disclosure - Contingencies, Commitments and Guarantees (Commitments - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesCommitmentsNarrativeDetails",
     "shortName": "Contingencies, Commitments and Guarantees (Commitments - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_FinancialInstrumentAxis_us-gaap_LoanOriginationCommitmentsMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R121": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:GuaranteeObligationsMaximumExposure",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2417403 - Disclosure - Contingencies, Commitments and Guarantees (Guarantees - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails",
     "shortName": "Contingencies, Commitments and Guarantees (Guarantees - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:GuaranteeObligationsMaximumExposure",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R122": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-8",
      "first": true,
      "lang": null,
      "name": "us-gaap:RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2418401 - Disclosure - Related Party Transaction (Related Party Transaction - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails",
     "shortName": "Related Party Transaction (Related Party Transaction - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:DueToRelatedPartiesCurrentAndNoncurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R123": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "D2020Q1_dei_LegalEntityAxis_bhl_BrighthouseReinsuranceCompanyofDelawareMember_us-gaap_SubsequentEventTypeAxis_us-gaap_SubsequentEventMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DividendsCommonStockPaidinkind",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2421401 - Disclosure - Subsequent Events (Details)",
     "role": "http://www.brighthousefinancial.com/role/SubsequentEventsDetails",
     "shortName": "Subsequent Events (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "D2020Q1_dei_LegalEntityAxis_bhl_BrighthouseReinsuranceCompanyofDelawareMember_us-gaap_SubsequentEventTypeAxis_us-gaap_SubsequentEventMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DividendsCommonStockPaidinkind",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R124": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "srt:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2422401 - Disclosure - Consolidated Summary of Investments - Other Than Investments in Related Parties (Details)",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
     "shortName": "Consolidated Summary of Investments - Other Than Investments in Related Parties (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "srt:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R125": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesDebtSecurities",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2423401 - Disclosure - Condensed Financial Information (Parent Company) (Condensed Balance Sheets) (Details)",
     "role": "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
     "shortName": "Condensed Financial Information (Parent Company) (Condensed Balance Sheets) (Details)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesDebtSecurities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R126": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2423402 - Disclosure - Condensed Financial Information (Parent Company) Condensed Financial Information (Parent Company) (Condensed Balance Sheets - Phantom) (Details)",
     "role": "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
     "shortName": "Condensed Financial Information (Parent Company) Condensed Financial Information (Parent Company) (Condensed Balance Sheets - Phantom) (Details)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": null
    },
    "R127": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:PremiumsEarnedNet",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2423403 - Disclosure - Condensed Financial Information (Parent Company) (Condensed Statements of Operations) (Details)",
     "role": "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
     "shortName": "Condensed Financial Information (Parent Company) (Condensed Statements of Operations) (Details)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:PremiumsEarnedNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R128": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:NetCashProvidedByUsedInOperatingActivities",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2423404 - Disclosure - Condensed Financial Information (Parent Company) (Condensed Statements of Cash Flows) (Details)",
     "role": "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
     "shortName": "Condensed Financial Information (Parent Company) (Condensed Statements of Cash Flows) (Details)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:NetCashProvidedByUsedInOperatingActivities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R129": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "bhl:CapitalContributionsToSubsidiaries",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2423405 - Disclosure - Condensed Financial Information (Parent Company) (Investment in Subsidiaries Footnote) (Details)",
     "role": "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails",
     "shortName": "Condensed Financial Information (Parent Company) (Investment in Subsidiaries Footnote) (Details)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2017Q4YTD_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:CashDividendsPaidToParentCompany",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R13": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ReinsuranceTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2108100 - Disclosure - Reinsurance",
     "role": "http://www.brighthousefinancial.com/role/Reinsurance",
     "shortName": "Reinsurance",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ReinsuranceTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R130": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "srt:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2424401 - Disclosure - Consolidated Supplementary Insurance Information (Balance Sheet Items) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
     "shortName": "Consolidated Supplementary Insurance Information (Balance Sheet Items) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "srt:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "lang": null,
      "name": "bhl:SupplementaryInsuranceInformationFuturePolicyBenefitsOtherPolicyRelatedBalancesAndPolicyholderDividendObligation",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R131": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "bhl:SupplementaryInsuranceInformationPremiumRevenueAndPolicyCharges",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2424402 - Disclosure - Consolidated Supplementary Insurance Information (Income Statement Items) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails",
     "shortName": "Consolidated Supplementary Insurance Information (Income Statement Items) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "bhl:SupplementaryInsuranceInformationPremiumRevenueAndPolicyCharges",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R132": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "srt:SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "srt:LifeInsuranceInForceGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2425401 - Disclosure - Consolidated Reinsurance (Details)",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
     "shortName": "Consolidated Reinsurance (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "srt:SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "srt:LifeInsuranceInForceGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R14": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2109100 - Disclosure - Investments",
     "role": "http://www.brighthousefinancial.com/role/Investments",
     "shortName": "Investments",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R15": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2110100 - Disclosure - Derivatives",
     "role": "http://www.brighthousefinancial.com/role/Derivatives",
     "shortName": "Derivatives",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R16": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:FairValueDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2111100 - Disclosure - Fair Value",
     "role": "http://www.brighthousefinancial.com/role/FairValue",
     "shortName": "Fair Value",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:FairValueDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R17": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DebtDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2113100 - Disclosure - Long-term Debt",
     "role": "http://www.brighthousefinancial.com/role/LongTermDebt",
     "shortName": "Long-term Debt",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DebtDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R18": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2114100 - Disclosure - Equity",
     "role": "http://www.brighthousefinancial.com/role/Equity",
     "shortName": "Equity",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R19": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2115100 - Disclosure - Other Revenues and Other Expenses",
     "role": "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpenses",
     "shortName": "Other Revenues and Other Expenses",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R2": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "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.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
     "shortName": "Consolidated Balance Sheets",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:IncomeTaxReceivable",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R20": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2116100 - Disclosure - Income Tax",
     "role": "http://www.brighthousefinancial.com/role/IncomeTax",
     "shortName": "Income Tax",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R21": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommitmentsContingenciesAndGuaranteesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2117100 - Disclosure - Contingencies, Commitments and Guarantees",
     "role": "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuarantees",
     "shortName": "Contingencies, Commitments and Guarantees",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommitmentsContingenciesAndGuaranteesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R22": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2118100 - Disclosure - Related Party Transactions",
     "role": "http://www.brighthousefinancial.com/role/RelatedPartyTransactions",
     "shortName": "Related Party Transactions",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R23": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SubsequentEventsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2121100 - Disclosure - Subsequent Events",
     "role": "http://www.brighthousefinancial.com/role/SubsequentEvents",
     "shortName": "Subsequent Events",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SubsequentEventsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R24": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2122100 - Disclosure - Consolidated Summary of Investments - Other Than Investments in Related Parties",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedParties",
     "shortName": "Consolidated Summary of Investments - Other Than Investments in Related Parties",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R25": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2123100 - Disclosure - Condensed Financial Information (Parent Company)",
     "role": "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompany",
     "shortName": "Condensed Financial Information (Parent Company)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R26": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2124100 - Disclosure - Consolidated Supplementary Insurance Information",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformation",
     "shortName": "Consolidated Supplementary Insurance Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R27": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2125100 - Disclosure - Consolidated Reinsurance",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedReinsurance",
     "shortName": "Consolidated Reinsurance",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R28": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:UseOfEstimates",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2201201 - Disclosure - Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)",
     "role": "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies",
     "shortName": "Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)",
     "subGroupType": "policies",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:UseOfEstimates",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R29": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2302301 - Disclosure - Segment Information (Tables)",
     "role": "http://www.brighthousefinancial.com/role/SegmentInformationTables",
     "shortName": "Segment Information (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R3": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1001501 - Statement - Consolidated Balance Sheets (Parenthetical)",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheetsParenthetical",
     "shortName": "Consolidated Balance Sheets (Parenthetical)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": null
    },
    "R30": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "bhl:InsuranceLiabilitiesTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2306301 - Disclosure - Insurance (Tables)",
     "role": "http://www.brighthousefinancial.com/role/InsuranceTables",
     "shortName": "Insurance (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "bhl:InsuranceLiabilitiesTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R31": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PresentValueOfFutureInsuranceProfitsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2307301 - Disclosure - Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (Tables)",
     "role": "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesTables",
     "shortName": "Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PresentValueOfFutureInsuranceProfitsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R32": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EffectsOfReinsuranceTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2308301 - Disclosure - Reinsurance (Tables)",
     "role": "http://www.brighthousefinancial.com/role/ReinsuranceTables",
     "shortName": "Reinsurance (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EffectsOfReinsuranceTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R33": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AvailableForSaleSecuritiesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2309301 - Disclosure - Investments (Tables)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsTables",
     "shortName": "Investments (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AvailableForSaleSecuritiesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R34": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2310301 - Disclosure - Derivatives (Tables)",
     "role": "http://www.brighthousefinancial.com/role/DerivativesTables",
     "shortName": "Derivatives (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R35": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2311301 - Disclosure - Fair Value (Tables)",
     "role": "http://www.brighthousefinancial.com/role/FairValueTables",
     "shortName": "Fair Value (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R36": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDebtTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2313301 - Disclosure - Long-term Debt (Tables)",
     "role": "http://www.brighthousefinancial.com/role/LongTermDebtTables",
     "shortName": "Long-term Debt (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDebtTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R37": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "bhl:ScheduleofDividendPaymentRestrictionsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2314301 - Disclosure - Equity (Tables)",
     "role": "http://www.brighthousefinancial.com/role/EquityTables",
     "shortName": "Equity (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "bhl:ScheduleofDividendPaymentRestrictionsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R38": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2315301 - Disclosure - Other Expenses (Tables)",
     "role": "http://www.brighthousefinancial.com/role/OtherExpensesTables",
     "shortName": "Other Expenses (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R39": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2316301 - Disclosure - Income Tax (Tables)",
     "role": "http://www.brighthousefinancial.com/role/IncomeTaxTables",
     "shortName": "Income Tax (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R4": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:PremiumsEarnedNet",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1002000 - Statement - Consolidated Statements of Operations",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
     "shortName": "Consolidated Statements of Operations",
     "subGroupType": "",
     "uniqueAnchor": null
    },
    "R40": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:NumberOfReportableSegments",
      "reportCount": 1,
      "unitRef": "Segment",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2401402 - Disclosure - Business, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
     "shortName": "Business, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "I2017Q3SharesOutstanding_us-gaap_DebtInstrumentAxis_bhl_ParentshareholderspercentageMember_us-gaap_RestructuringCostAndReserveAxis_us-gaap_SpinoffMember",
      "decimals": "INF",
      "lang": null,
      "name": "bhl:CommonStockDistributionbyParent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R41": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2402402 - Disclosure - Segment Information (Operating Results) (Details)",
     "role": "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
     "shortName": "Segment Information (Operating Results) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_us-gaap_StatementBusinessSegmentsAxis_bhl_AnnuitiesMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:InterestRevenueExpenseNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R42": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:Assets",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2402403 - Disclosure - Segment Information (Assets and Liabilities) (Details)",
     "role": "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails",
     "shortName": "Segment Information (Assets and Liabilities) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_StatementBusinessSegmentsAxis_bhl_AnnuitiesMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:Assets",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R43": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ReconciliationOfRevenueFromSegmentsToConsolidatedTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:Revenues",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2402404 - Disclosure - Segment Information (Reconciliation of Operating Revenues to Total Revenues) (Details)",
     "role": "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails",
     "shortName": "Segment Information (Reconciliation of Operating Revenues to Total Revenues) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ReconciliationOfRevenueFromSegmentsToConsolidatedTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_us-gaap_StatementBusinessSegmentsAxis_bhl_AnnuitiesMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:Revenues",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R44": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:InsuranceServicesRevenue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2402405 - Disclosure - Segment Information (Premiums, Universal Life and Investment-Type Product Policy Fees and Other Revenues by Major Product Group) (Details)",
     "role": "http://www.brighthousefinancial.com/role/SegmentInformationPremiumsUniversalLifeAndInvestmentTypeProductPolicyFeesAndOtherRevenuesByMajorProductGroupDetails",
     "shortName": "Segment Information (Premiums, Universal Life and Investment-Type Product Policy Fees and Other Revenues by Major Product Group) (Details)",
     "subGroupType": "policies",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:InsuranceServicesRevenue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R45": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:NumberOfReportableSegments",
      "reportCount": 1,
      "unitRef": "Segment",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2402406 - Disclosure - Segment Information (Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/SegmentInformationNarrativeDetails",
     "shortName": "Segment Information (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R46": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "D2017Q3SD",
      "decimals": "-8",
      "first": true,
      "lang": null,
      "name": "bhl:AmountofotherincreasedecreaseinadditionalpaidincapitalAPICduetoareturnofcapital",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2403401 - Disclosure - Organizational Changes (Details)",
     "role": "http://www.brighthousefinancial.com/role/OrganizationalChangesDetails",
     "shortName": "Organizational Changes (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2017Q2YTD_us-gaap_RestructuringCostAndReserveAxis_us-gaap_SpinoffMember",
      "decimals": "-8",
      "lang": null,
      "name": "bhl:AmountofotherincreasedecreaseinadditionalpaidincapitalAPICduetoareturnofcapital",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R47": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "bhl:InsuranceLiabilitiesComprisedOfFuturePolicyBenefitsPolicyholderAccountBalancesAndOtherPolicyRelatedBalances",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2406402 - Disclosure - Insurance (Insurance Liabilities) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InsuranceInsuranceLiabilitiesDetails",
     "shortName": "Insurance (Insurance Liabilities) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "bhl:InsuranceLiabilitiesComprisedOfFuturePolicyBenefitsPolicyholderAccountBalancesAndOtherPolicyRelatedBalances",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R48": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "2",
      "first": true,
      "lang": null,
      "name": "us-gaap:LifePremiumsAsPercentageOfGrossPremiums",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2406404 - Disclosure - Insurance Insurance (Future Policy Benefits - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails",
     "shortName": "Insurance Insurance (Future Policy Benefits - Narrative) (Details)",
     "subGroupType": "policies",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "2",
      "first": true,
      "lang": null,
      "name": "us-gaap:LifePremiumsAsPercentageOfGrossPremiums",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R49": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfMinimumGuaranteedBenefitLiabilitiesTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2018Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2406405 - Disclosure - Insurance (Guarantees) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
     "shortName": "Insurance (Guarantees) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfMinimumGuaranteedBenefitLiabilitiesTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2016Q4",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R5": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1003000 - Statement - Consolidated Statements Of Comprehensive Income",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome",
     "shortName": "Consolidated Statements Of Comprehensive Income",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R50": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfNetAmountOfRiskByProductAndGuaranteeTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ProductOrServiceAxis_us-gaap_VariableAnnuityMember_us-gaap_GuaranteedInsuranceContractTypeOfBenefitAxis_us-gaap_GuaranteedMinimumDeathBenefitMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2406406 - Disclosure - Insurance (Guarantees Related to Annuity Contracts) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails",
     "shortName": "Insurance (Guarantees Related to Annuity Contracts) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfNetAmountOfRiskByProductAndGuaranteeTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ProductOrServiceAxis_us-gaap_VariableAnnuityMember_us-gaap_GuaranteedInsuranceContractTypeOfBenefitAxis_us-gaap_GuaranteedMinimumDeathBenefitMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R51": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfNetAmountOfRiskByProductAndGuaranteeTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ProductOrServiceAxis_us-gaap_UniversalLifeMember_us-gaap_GuaranteedInsuranceContractTypeOfGuaranteeAxis_bhl_SecondaryGuaranteesMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "bhl:NetAmountAtRiskByProductAndGuaranteeGeneralAndSeparateAccountValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2406407 - Disclosure - Insurance (Guarantees Related to Universal and Variable Life Contracts) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails",
     "shortName": "Insurance (Guarantees Related to Universal and Variable Life Contracts) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfNetAmountOfRiskByProductAndGuaranteeTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ProductOrServiceAxis_us-gaap_UniversalLifeMember_us-gaap_GuaranteedInsuranceContractTypeOfGuaranteeAxis_bhl_SecondaryGuaranteesMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "bhl:NetAmountAtRiskByProductAndGuaranteeGeneralAndSeparateAccountValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R52": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ProductOrServiceAxis_bhl_VariableAnnuityAndVariableLifeMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2406408 - Disclosure - Insurance (Fund Groupings) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails",
     "shortName": "Insurance (Fund Groupings) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ProductOrServiceAxis_bhl_VariableAnnuityAndVariableLifeMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R53": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "0",
      "first": true,
      "lang": null,
      "name": "bhl:FundingAgreementsIssuedToCertainSpecialPurposeEntities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2406409 - Disclosure - Insurance (Obligations Under Funding Agreements - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails",
     "shortName": "Insurance (Obligations Under Funding Agreements - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "0",
      "first": true,
      "lang": null,
      "name": "bhl:FundingAgreementsIssuedToCertainSpecialPurposeEntities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R54": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:DeferredPolicyAcquisitionCostsTableTextBlock",
       "us-gaap:PresentValueOfFutureInsuranceProfitsTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2018Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredPolicyAcquisitionCosts",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2407402 - Disclosure - Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (DAC and VOBA) (Details)",
     "role": "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails",
     "shortName": "Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (DAC and VOBA) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:DeferredPolicyAcquisitionCostsTableTextBlock",
       "us-gaap:PresentValueOfFutureInsuranceProfitsTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:DeferredPolicyAcquisitionCostsAdditions",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R55": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "srt:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2407403 - Disclosure - Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (DAC and VOBA by Segment) (Details)",
     "role": "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaBySegmentDetails",
     "shortName": "Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (DAC and VOBA by Segment) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R56": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock",
       "us-gaap:DeferredSalesInducementsTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2018Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredSalesInducementsNet",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2407404 - Disclosure - Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (Deferred Sales Inducements) (Details)",
     "role": "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDeferredSalesInducementsDetails",
     "shortName": "Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (Deferred Sales Inducements) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock",
       "us-gaap:DeferredSalesInducementsTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2016Q4",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:DeferredSalesInducementsNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R57": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearOne",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2407405 - Disclosure - Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (Estimated Future Amortization) (Details)",
     "role": "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails",
     "shortName": "Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (Estimated Future Amortization) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearOne",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R58": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DirectPremiumsEarned",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2408402 - Disclosure - Reinsurance (Effects of Reinsurance on Earnings) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails",
     "shortName": "Reinsurance (Effects of Reinsurance on Earnings) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "lang": null,
      "name": "bhl:DirectInsuranceCommissionsAndFees",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R59": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-8",
      "first": true,
      "lang": null,
      "name": "us-gaap:DepositContractsLiabilities",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2408403 - Disclosure - Reinsurance (Effects of Reinsurance on Balance Sheet) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails",
     "shortName": "Reinsurance (Effects of Reinsurance on Balance Sheet) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:EffectsOfReinsuranceTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ProductOrServiceAxis_bhl_DirectReinsuranceMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:PremiumsAndOtherReceivablesNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R6": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2016Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1004000 - Statement - Consolidated Statements of Equity",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
     "shortName": "Consolidated Statements of Equity",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2016Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R60": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AssumedPremiumsEarned",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2408404 - Disclosure - Reinsurance (Effects of Affiliated Reinsurance on Statements of Operations) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
     "shortName": "Reinsurance (Effects of Affiliated Reinsurance on Statements of Operations) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:EffectsOfReinsuranceTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_srt_ProductOrServiceAxis_bhl_AssumedReinsuranceMember_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_srt_AffiliatedEntityMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:AssumedPremiumsEarned",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R61": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:EffectsOfReinsuranceTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:PremiumsAndOtherReceivablesNet",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2408405 - Disclosure - Reinsurance (Effects of Affiliated Reinsurance on Balance Sheets) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
     "shortName": "Reinsurance (Effects of Affiliated Reinsurance on Balance Sheets) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_ProductOrServiceAxis_bhl_AssumedReinsuranceMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:ReinsuranceRecoverablesGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R62": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-8",
      "first": true,
      "lang": null,
      "name": "us-gaap:DepositContractsAssets",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2408406 - Disclosure - Reinsurance (Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
     "shortName": "Reinsurance (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_CededCreditRiskAxis_bhl_FiveLargestCededReinsurersMember",
      "decimals": "-8",
      "lang": null,
      "name": "bhl:CededCreditRiskReinsuranceRecoverablesNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R63": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:OtherInvestments",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2408407 - Disclosure - Reinsurance (Related Party Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails",
     "shortName": "Reinsurance (Related Party Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_srt_AffiliatedEntityMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:DepositContractsAssets",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R64": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409402 - Disclosure - Investments (Fixed Maturity Securities AFS by Sector) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails",
     "shortName": "Investments (Fixed Maturity Securities AFS by Sector) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:AvailableForSaleSecuritiesTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R65": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409403 - Disclosure - Investments (Maturities of Fixed Maturity Securities) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails",
     "shortName": "Investments (Maturities of Fixed Maturity Securities) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R66": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409404 - Disclosure - Investments (Continuous Gross Unrealized Losses for Fixed Maturity Securities AFS by Sector) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
     "shortName": "Investments (Continuous Gross Unrealized Losses for Fixed Maturity Securities AFS by Sector) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R67": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:NotesReceivableGross",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409405 - Disclosure - Investments (Mortgage Loans by Portfolio Segment) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails",
     "shortName": "Investments (Mortgage Loans by Portfolio Segment) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "3",
      "lang": null,
      "name": "bhl:PercentageOfLoansReceivableToMortgageLoansOnRealEstateCommercialAndConsumerNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R68": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:NotesReceivableGross",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409406 - Disclosure - Investments (Credit Quality of Mortgage Loans) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
     "shortName": "Investments (Credit Quality of Mortgage Loans) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:FinancingReceivableCreditQualityIndicatorsTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_FinancingReceivablePortfolioSegmentAxis_us-gaap_CommercialPortfolioSegmentMember_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_us-gaap_RealEstateLoanMember",
      "decimals": "INF",
      "lang": null,
      "name": "bhl:NotesReceivableGrossByLoanToValueAsPercentageOfNotesReceivableGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R69": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "bhl:NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToDebtSecuritiesThatWereTemporarilyImpaired",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409407 - Disclosure - Investments (Net Unrealized Investment Gains (Losses)) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails",
     "shortName": "Investments (Net Unrealized Investment Gains (Losses)) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "bhl:NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToDebtSecuritiesThatWereTemporarilyImpaired",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R7": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:ProfitLoss",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1005000 - Statement - Consolidated Statements of Cash Flows",
     "role": "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows",
     "shortName": "Consolidated Statements of Cash Flows",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R70": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2018Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "bhl:NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossAttributableToCompany",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409408 - Disclosure - Investments (Changes in Net Unrealized Investment Gains (Losses)) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails",
     "shortName": "Investments (Changes in Net Unrealized Investment Gains (Losses)) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2016Q4",
      "decimals": "-6",
      "lang": null,
      "name": "bhl:NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossAttributableToCompany",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R71": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfSecuritiesFinancingTransactionsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409409 - Disclosure - Investments (Securities Lending) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails",
     "shortName": "Investments (Securities Lending) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfSecuritiesFinancingTransactionsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:SecuritiesReceivedAsCollateral",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R72": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfSecuritiesFinancingTransactionsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409410 - Disclosure - Investments (Securities Lending Remaining Tenor) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails",
     "shortName": "Investments (Securities Lending Remaining Tenor) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfSecuritiesFinancingTransactionsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_FinancialInstrumentAxis_us-gaap_USTreasuryAndGovernmentMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R73": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfFinancialInstrumentsOwnedAndPledgedAsCollateralTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DepositAssets",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409411 - Disclosure - Investments (Invested Assets on Deposit, Held In Trust and Pledged as Collateral) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralDetails",
     "shortName": "Investments (Invested Assets on Deposit, Held In Trust and Pledged as Collateral) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfFinancialInstrumentsOwnedAndPledgedAsCollateralTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "lang": null,
      "name": "bhl:InvestedAssetsPledgedAsCollateral",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R74": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfVariableInterestEntitiesTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:VariableInterestEntityNonconsolidatedCarryingAmountAssets",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409412 - Disclosure - Investments (Variable Interest Entities) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesDetails",
     "shortName": "Investments (Variable Interest Entities) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfVariableInterestEntitiesTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:VariableInterestEntityNonconsolidatedCarryingAmountAssets",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R75": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentIncomeTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:GrossInvestmentIncomeOperating",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409413 - Disclosure - Investments (Net Investment Income) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails",
     "shortName": "Investments (Net Investment Income) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentIncomeTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:GrossInvestmentIncomeOperating",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R76": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:GainLossOnInvestmentsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:GainLossOnSaleOfDebtInvestments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409414 - Disclosure - Investments (Components of Net Investment Gains (Losses)) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails",
     "shortName": "Investments (Components of Net Investment Gains (Losses)) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:GainLossOnInvestmentsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:GainLossOnSaleOfDebtInvestments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R77": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_us-gaap_FinancialInstrumentAxis_us-gaap_DebtSecuritiesMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:ProceedsFromSaleOfInsuranceInvestments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409415 - Disclosure - Investments (Sales or Disposals of Fixed Maturity Securities) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsSalesOrDisposalsOfFixedMaturitySecuritiesDetails",
     "shortName": "Investments (Sales or Disposals of Fixed Maturity Securities) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_us-gaap_FinancialInstrumentAxis_us-gaap_DebtSecuritiesMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:ProceedsFromSaleOfInsuranceInvestments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R78": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesDebtSecurities",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409416 - Disclosure - Investments (Fixed Maturity Securities AFS - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsNarrativeDetails",
     "shortName": "Investments (Fixed Maturity Securities AFS - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_FinancialInstrumentAxis_bhl_NonIncomeProducingDebtSecuritiesMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesDebtSecurities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R79": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409417 - Disclosure - Investments (Continuous Gross Unrealized Losses for Fixed Maturity Securities AFS by Sector - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails",
     "shortName": "Investments (Continuous Gross Unrealized Losses for Fixed Maturity Securities AFS by Sector - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "2",
      "lang": null,
      "name": "bhl:FixedMaturitiesAvailableForSaleWithGrossUnrealizedLossOfEqualToOrGreaterThanStatedPercentage",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R8": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2101100 - Disclosure - Business, Basis of Presentation and Summary of Significant Accounting Policies",
     "role": "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPolicies",
     "shortName": "Business, Basis of Presentation and Summary of Significant Accounting Policies",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R80": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_us-gaap_RealEstateLoanMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:FinancingReceivableSignificantPurchases",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409418 - Disclosure - Investments (Mortgage Loans - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails",
     "shortName": "Investments (Mortgage Loans - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_us-gaap_RealEstateLoanMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:FinancingReceivableSignificantPurchases",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R81": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_BalanceSheetLocationAxis_bhl_OtherInvestedAssetsMember",
      "decimals": "2",
      "first": true,
      "lang": null,
      "name": "bhl:PercentageEstimatedFairValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409419 - Disclosure - Investments (Other Invested Assets - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsOtherInvestedAssetsNarrativeDetails",
     "shortName": "Investments (Other Invested Assets - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_BalanceSheetLocationAxis_bhl_OtherInvestedAssetsMember",
      "decimals": "2",
      "first": true,
      "lang": null,
      "name": "bhl:PercentageEstimatedFairValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R82": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_InvestmentTypeAxis_us-gaap_SecuritiesInvestmentMember",
      "decimals": "2",
      "first": true,
      "lang": null,
      "name": "bhl:PercentageofReinvestmentPortfolioinFixedMaturitySecurities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409420 - Disclosure - Investments (Securities Lending - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails",
     "shortName": "Investments (Securities Lending - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_InvestmentTypeAxis_us-gaap_SecuritiesInvestmentMember",
      "decimals": "2",
      "first": true,
      "lang": null,
      "name": "bhl:PercentageofReinvestmentPortfolioinFixedMaturitySecurities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R83": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfFinancialInstrumentsOwnedAndPledgedAsCollateralTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DepositAssets",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409421 - Disclosure - Investments (Invested Assets on Deposit, Held in Trust and Pledged as Collateral-Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails",
     "shortName": "Investments (Invested Assets on Deposit, Held in Trust and Pledged as Collateral-Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfFinancialInstrumentsOwnedAndPledgedAsCollateralTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_BalanceSheetLocationAxis_bhl_PolicyholderAccountBalancesMember_us-gaap_InvestmentTypeAxis_us-gaap_DebtSecuritiesMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:DepositAssets",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R84": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_FinancialInstrumentAxis_us-gaap_DebtSecuritiesMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:CertainLoansAcquiredInTransferAccountedForAsAvailableForSaleDebtSecuritiesOutstandingBalance",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409422 - Disclosure - Investments (Purchased Credit Impaired Investments - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsPurchasedCreditImpairedInvestmentsNarrativeDetails",
     "shortName": "Investments (Purchased Credit Impaired Investments - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_FinancialInstrumentAxis_us-gaap_DebtSecuritiesMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:CertainLoansAcquiredInTransferAccountedForAsAvailableForSaleDebtSecuritiesOutstandingBalance",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R85": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-8",
      "first": true,
      "lang": null,
      "name": "us-gaap:EquityMethodInvestments",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409423 - Disclosure - Investments (Collectively Significant Equity Method Investments - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsCollectivelySignificantEquityMethodInvestmentsNarrativeDetails",
     "shortName": "Investments (Collectively Significant Equity Method Investments - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-8",
      "lang": null,
      "name": "bhl:UnfundedCommitmentsForInvestmentsAccountedForUnderEquityMethod",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R86": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "bhl:VariableInterestEntityMaterialExistence",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409424 - Disclosure - Investments (Variable Interest Entities - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesNarrativeDetails",
     "shortName": "Investments (Variable Interest Entities - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "bhl:VariableInterestEntityMaterialExistence",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R87": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:NetInvestmentIncome",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409425 - Disclosure - Investments (Net Investment Income - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeNarrativeDetails",
     "shortName": "Investments (Net Investment Income - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_us-gaap_InvestmentTypeAxis_us-gaap_LimitedPartnerMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:NetInvestmentIncome",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R88": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2017Q1",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:EquityMethodInvestments",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409426 - Disclosure - Investments (Related Party Investment Transactions - Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails",
     "shortName": "Investments (Related Party Investment Transactions - Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2017Q1YTD",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:ProceedsFromSaleOfEquityMethodInvestments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R89": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DerivativeNotionalAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2410402 - Disclosure - Derivatives (Primary Risks Managed by Derivatives) (Details)",
     "role": "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
     "shortName": "Derivatives (Primary Risks Managed by Derivatives) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DerivativeNotionalAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R9": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SegmentReportingDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2102100 - Disclosure - Segment Information",
     "role": "http://www.brighthousefinancial.com/role/SegmentInformation",
     "shortName": "Segment Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SegmentReportingDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R90": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
       "us-gaap:ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2410403 - Disclosure - Derivatives Derivatives (Derivatives Pertaining to Hedged Items) (Details)",
     "role": "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
     "shortName": "Derivatives Derivatives (Derivatives Pertaining to Hedged Items) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
       "us-gaap:ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R91": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:DisclosureOfCreditDerivativesTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:CreditRiskDerivativesAtFairValueNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2410404 - Disclosure - Derivatives (Credit Derivatives) (Details)",
     "role": "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails",
     "shortName": "Derivatives (Credit Derivatives) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:DisclosureOfCreditDerivativesTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:CreditRiskDerivativesAtFairValueNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R92": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "bhl:OffsettingAssetsAndLiabilitiesTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2410405 - Disclosure - Derivatives (Estimated Fair Value of Derivatives Assets and Liabilities after Master Netting Agreements and Cash Collateral) (Details)",
     "role": "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails",
     "shortName": "Derivatives (Estimated Fair Value of Derivatives Assets and Liabilities after Master Netting Agreements and Cash Collateral) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "bhl:OffsettingAssetsAndLiabilitiesTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R93": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfDerivativeInstrumentsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_UnderlyingAssetClassAxis_bhl_DerivativesSubjectToCreditContingentProvisionsMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DerivativeNetLiabilityPositionAggregateFairValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2410406 - Disclosure - Derivatives (Credit Risk on Freestanding Derivatives) (Details)",
     "role": "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails",
     "shortName": "Derivatives (Credit Risk on Freestanding Derivatives) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfDerivativeInstrumentsTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_UnderlyingAssetClassAxis_bhl_DerivativesSubjectToCreditContingentProvisionsMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:DerivativeNetLiabilityPositionAggregateFairValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R94": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2410407 - Disclosure - Derivatives (Narrative) (Details)",
     "role": "http://www.brighthousefinancial.com/role/DerivativesNarrativeDetails",
     "shortName": "Derivatives (Narrative) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R95": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesDebtSecurities",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2411402 - Disclosure - Fair Value (Recurring Fair Value Measurements) (Details)",
     "role": "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
     "shortName": "Fair Value (Recurring Fair Value Measurements) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_FairValueByMeasurementFrequencyAxis_us-gaap_FairValueMeasurementsRecurringMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:AvailableForSaleSecuritiesDebtSecurities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R96": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_RangeAxis_srt_MinimumMember_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel3Member_us-gaap_MeasurementInputTypeAxis_us-gaap_MeasurementInputMortalityRateMember",
      "decimals": "4",
      "first": true,
      "lang": null,
      "name": "us-gaap:EmbeddedDerivativeLiabilityMeasurementInput",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2411403 - Disclosure - Fair Value (Quantitative Information) (Details)",
     "role": "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails",
     "shortName": "Fair Value (Quantitative Information) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_srt_RangeAxis_srt_MinimumMember_us-gaap_FairValueByFairValueHierarchyLevelAxis_us-gaap_FairValueInputsLevel3Member_us-gaap_MeasurementInputTypeAxis_us-gaap_MeasurementInputMortalityRateMember",
      "decimals": "4",
      "first": true,
      "lang": null,
      "name": "us-gaap:EmbeddedDerivativeLiabilityMeasurementInput",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R97": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2018Q4_us-gaap_DerivativeInstrumentRiskAxis_bhl_NetDerivativesMember",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2411404 - Disclosure - Fair Value (Unobservable Input Reconciliation) (Details)",
     "role": "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails",
     "shortName": "Fair Value (Unobservable Input Reconciliation) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "ix:continuation",
       "us-gaap:FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FD2019Q4YTD_us-gaap_DerivativeInstrumentRiskAxis_bhl_NetDerivativesMember",
      "decimals": "-6",
      "lang": null,
      "name": "us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R98": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:LoansInsurancePolicy",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2411405 - Disclosure - Fair Value (Financial Instruments Carried at Other Than Fair Value) (Details)",
     "role": "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails",
     "shortName": "Fair Value (Financial Instruments Carried at Other Than Fair Value) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:FairValueByBalanceSheetGroupingTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_FairValueByMeasurementBasisAxis_us-gaap_EstimateOfFairValueFairValueDisclosureMember",
      "decimals": "-6",
      "lang": null,
      "name": "bhl:FairValueMortgageLoansNetNotOnRecurringBasis",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R99": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4",
      "decimals": "-6",
      "first": true,
      "lang": null,
      "name": "us-gaap:LongTermDebt",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2413402 - Disclosure - Long-term Debt (Details)",
     "role": "http://www.brighthousefinancial.com/role/LongTermDebtDetails",
     "shortName": "Long-term Debt (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "span",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "us-gaap:ScheduleOfDebtTableTextBlock",
       "ix:continuation",
       "div",
       "body",
       "html"
      ],
      "baseRef": "bhinsurance-1231201910k.htm",
      "contextRef": "FI2019Q4_us-gaap_DebtInstrumentAxis_bhl_NonRecourseDebtDue2030Member",
      "decimals": "INF",
      "lang": null,
      "name": "us-gaap:DebtInstrumentInterestRateStatedPercentage",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    }
   },
   "segmentCount": 218,
   "tag": {
    "bhl_AaaAaMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Aaa Aa A Member.",
        "label": "Aaa Aa [Member]",
        "verboseLabel": "Aaa/Aa/A"
       }
      }
     },
     "localname": "AaaAaMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_AdjustmentsToAdditionalPaidInCapitalCapitalContribution": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Change in additional paid in capital as a result of a capital contribution, including transfers of ownership.",
        "label": "Adjustments To Additional Paid In Capital, Capital Contribution",
        "terseLabel": "Gain on sale of equity method investment recognized as capital contribution",
        "verboseLabel": "Capital contributions"
       }
      }
     },
     "localname": "AdjustmentsToAdditionalPaidInCapitalCapitalContribution",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityCapitalTransactionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/OrganizationalChangesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_AdjustmentstoAdditionalPaidinCapitalCapitalContributionsfromParent": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Adjustments to Additional Paid in Capital, Capital Contributions from Parent",
        "label": "Adjustments to Additional Paid in Capital, Capital Contributions from Parent",
        "terseLabel": "Adjustments to Additional Paid in Capital, Capital Contributions from Parent"
       }
      }
     },
     "localname": "AdjustmentstoAdditionalPaidinCapitalCapitalContributionsfromParent",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_AffiliateRecaptureVariableAnnuitiesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Recapture of agreements from BLICNY and NELICO",
        "label": "Affiliate Recapture Variable Annuities [Member]",
        "terseLabel": "Affiliate Recapture Variable Annuities [Member]"
       }
      }
     },
     "localname": "AffiliateRecaptureVariableAnnuitiesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_AggregateNetIncomeExceededStatedPercentageOfPreTaxIncomeLossFromContinuingOperations": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This caption represents the aggregate net income exceeded 10% of the pre tax income (loss) from continuing operations.",
        "label": "Aggregate Net Income Exceeded Stated Percentage Of Pre Tax Income (Loss) From Continuing Operations",
        "verboseLabel": "Percentage net investment income from investments in limited partnerships and LLCs exceeds consolidated pre-tax income (loss)"
       }
      }
     },
     "localname": "AggregateNetIncomeExceededStatedPercentageOfPreTaxIncomeLossFromContinuingOperations",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCollectivelySignificantEquityMethodInvestmentsNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_AgriculturalPortfolioSegmentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Portfolio segment of the company's total financing receivables related to agricultural receivables.",
        "label": "Agricultural Portfolio Segment [Member]",
        "terseLabel": "Agricultural"
       }
      }
     },
     "localname": "AgriculturalPortfolioSegmentMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_AlternativeMinimumTaxadjustmentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Alternative Minimum Tax adjustment resulting from the Tax Cuts and Jobs Act of 2017",
        "label": "Alternative Minimum Tax adjustment [Member]",
        "terseLabel": "Alternative Minimum Tax adjustment [Member]"
       }
      }
     },
     "localname": "AlternativeMinimumTaxadjustmentMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_AmountofotherincreasedecreaseinadditionalpaidincapitalAPICduetoareturnofcapital": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of other increase (decrease) in additional paid in capital (APIC) due to a return of capital",
        "label": "Amount of other increase (decrease) in additional paid in capital (APIC) due to a return of capital",
        "negatedTerseLabel": "Return of capital",
        "terseLabel": "Amount of other increase (decrease) in additional paid in capital (APIC) due to a return of capital",
        "verboseLabel": "Returns of capital"
       }
      }
     },
     "localname": "AmountofotherincreasedecreaseinadditionalpaidincapitalAPICduetoareturnofcapital",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityCapitalTransactionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/OrganizationalChangesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_AnnuitiesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Annuities.",
        "label": "Annuities [Member]",
        "terseLabel": "Annuities",
        "verboseLabel": "Annuities"
       }
      }
     },
     "localname": "AnnuitiesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaBySegmentDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_AssetsTransferredToAffiliatesEstimatedFairValue": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Estimated fair value of assets transfered to affiliates.",
        "label": "Assets Transferred To Affiliates, Estimated Fair Value",
        "terseLabel": "Invested assets transferred, estimated fair value"
       }
      }
     },
     "localname": "AssetsTransferredToAffiliatesEstimatedFairValue",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_AssumedGuaranteedMinimumBenefitMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Assumed Guaranteed Minimum Benefit",
        "label": "Assumed Guaranteed Minimum Benefit [Member]",
        "terseLabel": "Assumed guaranteed minimum benefits",
        "verboseLabel": "Assumed guaranteed minimum benefits"
       }
      }
     },
     "localname": "AssumedGuaranteedMinimumBenefitMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_AssumedInsuranceCommissionsAndFees": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_InsuranceCommissionsAndFees",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Universal life and investment-type product policy fees assumed from other insurers as a result of reinsurance arrangements.",
        "label": "Assumed Insurance Commissions And Fees",
        "verboseLabel": "Reinsurance assumed"
       }
      }
     },
     "localname": "AssumedInsuranceCommissionsAndFees",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_AssumedOtherExpenses": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Assumed Other Expenses - Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services assumed from other insurers as a result of reinsurance arrangements.",
        "label": "Assumed Other Expenses",
        "terseLabel": "Assumed Other Expenses"
       }
      }
     },
     "localname": "AssumedOtherExpenses",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_AssumedReinsuranceMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "All or part of a ceding company's insurance or reinsurance on a risk or exposure that is accepted.",
        "label": "Assumed Reinsurance [Member]",
        "terseLabel": "Assumed index-linked annuities",
        "verboseLabel": "Assumed"
       }
      }
     },
     "localname": "AssumedReinsuranceMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BHLRecaptureGMIBMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Recapture of variable annuities BLIC",
        "label": "BHL Recapture GMIB [Member]",
        "terseLabel": "BHL Recapture GMIB [Member]"
       }
      }
     },
     "localname": "BHLRecaptureGMIBMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BLICRepurchaseFacilityMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "BLIC repurchase facility.",
        "label": "BLIC Repurchase Facility [Member]",
        "terseLabel": "BLIC Repurchase Facility"
       }
      }
     },
     "localname": "BLICRepurchaseFacilityMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BLICSurplusNotedueDec2058Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "BLIC Surplus Note due Dec 2058",
        "label": "BLIC Surplus Note due Dec 2058 [Member]",
        "terseLabel": "Surplus Note Due Dec 2058"
       }
      }
     },
     "localname": "BLICSurplusNotedueDec2058Member",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BLICSurplusNotedueMar2059Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "BLIC Surplus Note due Mar 2059",
        "label": "BLIC Surplus Note due Mar 2059 [Member]",
        "terseLabel": "Surplus Note Due 2059"
       }
      }
     },
     "localname": "BLICSurplusNotedueMar2059Member",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BLICSurplusNotedueSep2058Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "BLIC Surplus Note due Sep 2058",
        "label": "BLIC Surplus Note due Sep 2058 [Member]",
        "terseLabel": "Surplus Note Due Sep 2058"
       }
      }
     },
     "localname": "BLICSurplusNotedueSep2058Member",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BRCDCommittedCreditFacilityMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "BRCD Committed Credit Facility.",
        "label": "BRCD Committed Credit Facility [Member]",
        "terseLabel": "BRCD Reinsurance Financing Arrangement"
       }
      }
     },
     "localname": "BRCDCommittedCreditFacilityMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BaaMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Baa.",
        "label": "Baa [Member]",
        "verboseLabel": "Baa"
       }
      }
     },
     "localname": "BaaMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BondFundsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Bond funds.",
        "label": "Bond Funds [Member]",
        "verboseLabel": "Bond"
       }
      }
     },
     "localname": "BondFundsMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BrighthouseLifeInsuranceCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Brighthouse Life Insurance Company [Member]",
        "label": "Brighthouse Life Insurance Company [Member]",
        "terseLabel": "Brighthouse Life Insurance Company"
       }
      }
     },
     "localname": "BrighthouseLifeInsuranceCompanyMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BrighthouseLifeInsuranceCompanyNYMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Brighthouse Life Insurance Company NY [Member]",
        "label": "Brighthouse Life Insurance Company NY [Member]",
        "terseLabel": "Brighthouse Life Insurance Company NY [Member]"
       }
      }
     },
     "localname": "BrighthouseLifeInsuranceCompanyNYMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BrighthouseLifeInsuranceCoofNYMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Brighthouse Life Insurance Co of NY [Member]",
        "label": "Brighthouse Life Insurance Co of NY [Member]",
        "terseLabel": "Brighthouse Life Insurance Co of NY"
       }
      }
     },
     "localname": "BrighthouseLifeInsuranceCoofNYMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityStatutoryCapitalAndSurplusDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryNetIncomeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BrighthouseReinsuranceCompanyofDelawareMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Brighthouse Reinsurance Company of Delaware [Member]",
        "label": "Brighthouse Reinsurance Company of Delaware [Member]",
        "terseLabel": "Brighthouse Reinsurance Company of Delaware"
       }
      }
     },
     "localname": "BrighthouseReinsuranceCompanyofDelawareMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails",
      "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityCaptiveEquityAndIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_BrokerDealerActivitiesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Broker Dealer Activities",
        "label": "Broker Dealer Activities [Member]",
        "terseLabel": "Broker Dealer Activities [Member]"
       }
      }
     },
     "localname": "BrokerDealerActivitiesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_CapitalContributionsToSubsidiaries": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow associated with the amount paid to the subsidiaries during the period.",
        "label": "Capital Contributions To Subsidiaries",
        "negatedLabel": "Capital contributions to subsidiaries"
       }
      }
     },
     "localname": "CapitalContributionsToSubsidiaries",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_CashPaidInConnectionWithFreestandingDerivatives": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 10.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow provided by derivative instruments during the period, which are classified as investing activities, including both hedging and non-hedging instruments.",
        "label": "Cash Paid In Connection With Freestanding Derivatives",
        "negatedLabel": "Cash paid in connection with freestanding derivatives"
       }
      }
     },
     "localname": "CashPaidInConnectionWithFreestandingDerivatives",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_Cashreceivedinconnectionwithfreestandingderivatives": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 9.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash inflow provided by derivative instruments during the period, which are classified as investing activities, including both hedging and non-hedging instruments.",
        "label": "Cash received in connection with freestanding derivatives",
        "verboseLabel": "Cash received in connection with freestanding derivatives"
       }
      }
     },
     "localname": "Cashreceivedinconnectionwithfreestandingderivatives",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_CededCreditRiskReinsuranceRecoverablesNet": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of reinsurance recoverables, net of allowance to cover probable credit loss, which constitute a concentration of credit risk.",
        "label": "Ceded Credit Risk, Reinsurance Recoverables, Net",
        "verboseLabel": "Five largest reinsurers, reinsurance recoverables amount"
       }
      }
     },
     "localname": "CededCreditRiskReinsuranceRecoverablesNet",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_CededCreditRiskReinsuranceRecoverablesPercentage": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of total reinsurance recoverables which constitute a concentration of credit risk.",
        "label": "Ceded Credit Risk, Reinsurance Recoverables, Percentage",
        "verboseLabel": "Five largest reinsurers, reinsurance recoverables percentage"
       }
      }
     },
     "localname": "CededCreditRiskReinsuranceRecoverablesPercentage",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_CededGuaranteedMinimumBenefitMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Ceded Guaranteed Minimum Benefit",
        "label": "Ceded Guaranteed Minimum Benefit [Member]",
        "terseLabel": "Ceded Guaranteed Minimum Benefit [Member]",
        "verboseLabel": "Ceded guaranteed minimum income benefits"
       }
      }
     },
     "localname": "CededGuaranteedMinimumBenefitMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_CededInsuranceCommissionsAndFees": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_InsuranceCommissionsAndFees",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Universal life and investment-type product policy fees ceded to other insurers as a result of reinsurance agreements.",
        "label": "Ceded Insurance Commissions And Fees",
        "negatedLabel": "Reinsurance ceded"
       }
      }
     },
     "localname": "CededInsuranceCommissionsAndFees",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_CededOtherExpenses": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Ceded Other Expenses - Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services ceded to other insurers as a result of reinsurance arrangements.",
        "label": "Ceded Other Expenses",
        "terseLabel": "Ceded Other Expenses"
       }
      }
     },
     "localname": "CededOtherExpenses",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_CededReinsuranceMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amounts passed on to another insurer (the reinsurer) that are all or part of the financial interests of insurance policies written by an insurer (the ceding insurer) or assumed by an insurer/reinsurer with the object of reducing the cedent's possible liability by sharing with the reinsurer the insurance liability, premiums, and losses from the reinsured business.",
        "label": "Ceded Reinsurance [Member]",
        "terseLabel": "Ceded Reinsurance [Member]",
        "verboseLabel": "Ceded"
       }
      }
     },
     "localname": "CededReinsuranceMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_ChangesInNetUnrealizedInvestmentGainsLossesAttributableToCompany": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents the increase (decrease) in net unrealized investment gains (losses) attributable to the Company.",
        "label": "Changes In Net Unrealized Investment Gains Losses Attributable To Company",
        "verboseLabel": "Change in net unrealized investment gains (losses)"
       }
      }
     },
     "localname": "ChangesInNetUnrealizedInvestmentGainsLossesAttributableToCompany",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_ChangesInNetUnrealizedInvestmentGainsLossesRelatedToDacAndVoba": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents the increase (decrease) in net unrealized investment gains (losses) related to DAC and VOBA.",
        "label": "Changes In Net Unrealized Investment Gains Losses Related To Dac And Voba",
        "verboseLabel": "Unrealized investment gains (losses) relating to: DAC, VOBA and DSI"
       }
      }
     },
     "localname": "ChangesInNetUnrealizedInvestmentGainsLossesRelatedToDacAndVoba",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_ChangesInNetUnrealizedInvestmentGainsLossesRelatedToInsuranceLiabilityGainLossRecognition": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents the increase (decrease) in net unrealized investment gains (losses) related to insurance liability gain (loss) recognition.",
        "label": "Changes In Net Unrealized Investment Gains Losses Related To Insurance Liability Gain Loss Recognition",
        "verboseLabel": "Unrealized investment gains (losses) relating to: Future policy benefits"
       }
      }
     },
     "localname": "ChangesInNetUnrealizedInvestmentGainsLossesRelatedToInsuranceLiabilityGainLossRecognition",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_ChangesInNetUnrealizedInvestmentGainsLossesRelatedToUnrealizedInvestmentGainsLossesDuringPeriod": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents the increase (decrease) in net unrealized investment gains (losses) related to unrealized investment gains (losses) during the period.",
        "label": "Changes In Net Unrealized Investment Gains Losses Related To Unrealized Investment Gains Losses During Period",
        "verboseLabel": "Unrealized investment gains (losses) during the year"
       }
      }
     },
     "localname": "ChangesInNetUnrealizedInvestmentGainsLossesRelatedToUnrealizedInvestmentGainsLossesDuringPeriod",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_CommissionsFeesAndOtherIncomeAssumed": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_OtherIncome",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fees, commissions and other revenues assumed from other insurers as a result of reinsurance arrangements.",
        "label": "Commissions Fees And Other Income Assumed",
        "verboseLabel": "Reinsurance assumed"
       }
      }
     },
     "localname": "CommissionsFeesAndOtherIncomeAssumed",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_CommonStockDistributionbyParent": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of common stock that parent intends to distribute",
        "label": "Common Stock Distribution by Parent",
        "terseLabel": "Common Stock Distribution by Parent"
       }
      }
     },
     "localname": "CommonStockDistributionbyParent",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_ContingenciesCommitmentsAndGuaranteesTextualsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contingencies, Commitments and Guarantees.",
        "label": "Contingencies Commitments And Guarantees Textuals [Abstract]",
        "verboseLabel": "Contingencies, Commitments and Guarantees (Textuals) [Abstract]"
       }
      }
     },
     "localname": "ContingenciesCommitmentsAndGuaranteesTextualsAbstract",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_ContributionTransactionsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contribution Transactions [Abstract]",
        "label": "Contribution Transactions [Abstract]"
       }
      }
     },
     "localname": "ContributionTransactionsAbstract",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "xbrltype": "stringItemType"
    },
    "bhl_DebtServiceCoverageAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt Service Coverage Ratio By Range Axis.",
        "label": "Debt Service Coverage [Axis]",
        "terseLabel": "Debt Service Coverage [Axis]"
       }
      }
     },
     "localname": "DebtServiceCoverageAxis",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_DebtServiceCoverageDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "[Domain] for Debt Service Coverage Ratio By Range Axis.",
        "label": "Debt Service Coverage [Domain]",
        "terseLabel": "Debt Service Coverage [Domain]"
       }
      }
     },
     "localname": "DebtServiceCoverageDomain",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_DeferredIncomeTaxAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Component for deferred income taxes.",
        "label": "Deferred Income Tax [Axis]",
        "terseLabel": "Deferred Income Tax [Axis]"
       }
      }
     },
     "localname": "DeferredIncomeTaxAxis",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquiredBySegmentTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying (unamortized) amount as of the balance sheet date of deferred policy acquisition costs and value of business acquired (also called present value of future profits) by segment.",
        "label": "Deferred Policy Acquisition Costs And Value Of Business Acquired By Segment [Table Text Block]",
        "verboseLabel": "Information Regarding Deferred Policy Acquisition Costs and Value of Business Acquired by Segment"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquiredBySegmentTableTextBlock",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "bhl_DerivativeAssetCollateralObligationToReturnSecuritiesOffset": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of obligation to return securities collateral under master netting arrangements offset against derivative assets.",
        "label": "Derivative Asset, Collateral, Obligation to Return Securities, Offset",
        "negatedTerseLabel": "Derivative Asset, Collateral, Obligation to Return Securities, Offset"
       }
      }
     },
     "localname": "DerivativeAssetCollateralObligationToReturnSecuritiesOffset",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_DerivativeLiabilityCollateralRightToReclaimSecuritiesOffset": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of right to receive securities collateral under master netting arrangements offset against derivative liabilities.",
        "label": "Derivative Liability, Collateral, Right to Reclaim Securities, Offset",
        "negatedTerseLabel": "Derivative Liability, Collateral, Right to Reclaim Securities, Offset"
       }
      }
     },
     "localname": "DerivativeLiabilityCollateralRightToReclaimSecuritiesOffset",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_DerivativesSubjectToCreditContingentProvisionsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Derivatives Subject To Credit Contingent Provisions Member.",
        "label": "Derivatives Subject To Credit-Contingent Provisions [Member]",
        "terseLabel": "Derivatives Subject To Credit-Contingent Provisions"
       }
      }
     },
     "localname": "DerivativesSubjectToCreditContingentProvisionsMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_DirectGuaranteedMinimumBenefitMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Direct Guaranteed Minimum Benefit",
        "label": "Direct Guaranteed Minimum Benefit [Member]",
        "terseLabel": "Direct guaranteed minimum benefits"
       }
      }
     },
     "localname": "DirectGuaranteedMinimumBenefitMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_DirectInsuranceCommissionsAndFees": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_InsuranceCommissionsAndFees",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Universal life and investment-type product policy fees for all insurance before adding amounts assumed from other insurers or subtracting amounts ceded to other insurers.",
        "label": "Direct Insurance Commissions And Fees",
        "verboseLabel": "Direct universal life and investment-type product policy fees"
       }
      }
     },
     "localname": "DirectInsuranceCommissionsAndFees",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_DirectOtherExpenses": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Direct Other Expenses - Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Before adding selling, general and administrative expense assumed from other insurers or subtracting any amounts ceded to other insurers.",
        "label": "Direct Other Expenses",
        "terseLabel": "Direct Other Expenses"
       }
      }
     },
     "localname": "DirectOtherExpenses",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_DirectReinsuranceMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amounts for all insurance before adding amounts assumed from other insurers or subtracting amounts ceded to other insurers.",
        "label": "Direct Reinsurance [Member]",
        "verboseLabel": "Direct"
       }
      }
     },
     "localname": "DirectReinsuranceMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_DirectindexlinkedannuitiesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Direct index-linked annuities",
        "label": "Direct index-linked annuities [Member]",
        "terseLabel": "Direct index-linked annuities"
       }
      }
     },
     "localname": "DirectindexlinkedannuitiesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_Dsc100To120PercentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt service coverage (DSC) ratio from 100% to 120% or 1.00x to 1.20x. Element name and standard label in DSV [numeric lower end] to [numeric higher end] Percent [Member] format.",
        "label": "Dsc 100 To 120 Percent [Member]",
        "terseLabel": "Debt Service Coverage Ratio, 1.00x to 1.20x"
       }
      }
     },
     "localname": "Dsc100To120PercentMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_DscGreaterThan120PercentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt service coverage (DSC) ratio greater than 120% or 1.20x. Element name and standard label in DSC Greater Than [low end numeric value] Percent [Member] or DSC Less Than [high end numeric value] Percent [Member] formats.",
        "label": "Dsc Greater Than 120 Percent [Member]",
        "terseLabel": "Debt Service Coverage Ratio, Greater than 1.20x"
       }
      }
     },
     "localname": "DscGreaterThan120PercentMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_DscLessThan100PercentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt service coverage (DSC) ratio less than 100% or 1.00x. Element name and standard label in DSC Greater Than [low end numeric value] Percent [Member] or DSC Less Than [high end numeric value] Percent [Member] formats.",
        "label": "Dsc Less Than 100 Percent [Member]",
        "terseLabel": "Debt Service Coverage Ratio, Less than 1.00x"
       }
      }
     },
     "localname": "DscLessThan100PercentMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_EffectiveIncomeTaxReconciliationTaxCutsandJobsActof2017Amount": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Effective Income Tax Reconciliation, Tax Cuts and Jobs Act of 2017, Amount",
        "label": "Effective Income Tax Reconciliation, Tax Cuts and Jobs Act of 2017, Amount",
        "terseLabel": "Rate revaluation due to tax reform (2)"
       }
      }
     },
     "localname": "EffectiveIncomeTaxReconciliationTaxCutsandJobsActof2017Amount",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails",
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_EquityFuturesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Equity Futures Member.",
        "label": "Equity Futures [Member]",
        "terseLabel": "Equity futures"
       }
      }
     },
     "localname": "EquityFuturesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_EquityTotalReturnSwapsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contracts where a set of future cash flows are agreed to be exchanged at set dates in the future and are broken down as floating and equity legs. The floating leg is tied to LIBOR and the equity leg is based on performance of a stock or stock market index.",
        "label": "Equity Total Return Swaps [Member]",
        "terseLabel": "Equity total return swaps"
       }
      }
     },
     "localname": "EquityTotalReturnSwapsMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_EstablishmentCosts": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Costs incurred related to the establishment of services and infrastructure to replace those previously provided by the former parent prior to spin-off.",
        "label": "Establishment Costs",
        "terseLabel": "Establishment Costs"
       }
      }
     },
     "localname": "EstablishmentCosts",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_ExpirationDateByDeferredTaxAssetAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expiration date by type of deferred tax assets.",
        "label": "Expiration Date By Deferred Tax Asset [Axis]",
        "terseLabel": "Expiration Date By Deferred Tax Asset [Axis]"
       }
      }
     },
     "localname": "ExpirationDateByDeferredTaxAssetAxis",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetOperatingLossCarryforwardsDetails",
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_ExpirationDateByDeferredTaxAssetDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expiration date by type of deferred tax assets.",
        "label": "Expiration Date By Deferred Tax Asset [Domain]",
        "terseLabel": "Expiration Date By Deferred Tax Asset [Domain]"
       }
      }
     },
     "localname": "ExpirationDateByDeferredTaxAssetDomain",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetOperatingLossCarryforwardsDetails",
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_ExpirationPeriodFirstFourYearsByDeferredTaxAssetMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expiration period for the first four years by deferred tax asset type.",
        "label": "Expiration Period First Four Years By Deferred Tax Asset [Member]",
        "terseLabel": "2020-2024"
       }
      }
     },
     "localname": "ExpirationPeriodFirstFourYearsByDeferredTaxAssetMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_ExpirationPeriodForIndefiniteNumberOfYearsByDeferredTaxAssetMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expiration period for indefinite number of years by deferred tax asset type.",
        "label": "Expiration Period For Indefinite Number Of Years By Deferred Tax Asset [Member]",
        "terseLabel": "Indefinite",
        "verboseLabel": "Expiration Period For Indefinite Number Of Years By Deferred Tax Asset [Member]"
       }
      }
     },
     "localname": "ExpirationPeriodForIndefiniteNumberOfYearsByDeferredTaxAssetMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetOperatingLossCarryforwardsDetails",
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_ExpirationPeriodFourthFourYearsByDeferredTaxAssetMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expiration period for the fourth four years by deferred tax asset type.",
        "label": "Expiration Period Fourth Four Years By Deferred Tax Asset [Member]",
        "terseLabel": "Expiration Period Fourth Four Years By Deferred Tax Asset [Member]",
        "verboseLabel": "2035-2039"
       }
      }
     },
     "localname": "ExpirationPeriodFourthFourYearsByDeferredTaxAssetMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetOperatingLossCarryforwardsDetails",
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_ExpirationPeriodSecondFourYearsByDeferredTaxAssetMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expiration period for the second four years by deferred tax asset type.",
        "label": "Expiration Period Second Four Years By Deferred Tax Asset [Member]",
        "terseLabel": "2025-2029"
       }
      }
     },
     "localname": "ExpirationPeriodSecondFourYearsByDeferredTaxAssetMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_ExpirationPeriodThirdFourYearsByDeferredTaxAssetMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expiration period for the third four years by deferred tax asset type.",
        "label": "Expiration Period Third Four Years By Deferred Tax Asset [Member]",
        "terseLabel": "2030-2034"
       }
      }
     },
     "localname": "ExpirationPeriodThirdFourYearsByDeferredTaxAssetMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_FairValueMortgageLoansNetNotOnRecurringBasis": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Total amount of mortgage loans not valued on a recurring basis as of the balance sheet date.",
        "label": "Fair Value Mortgage Loans Net Not On Recurring Basis",
        "terseLabel": "Mortgage loans"
       }
      }
     },
     "localname": "FairValueMortgageLoansNetNotOnRecurringBasis",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_FarmerMacFundingAgreementsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Farmer Mac Funding Agreements [Member]",
        "label": "Farmer Mac Funding Agreements [Member]",
        "terseLabel": "Farmer Mac Funding Agreements [Member]"
       }
      }
     },
     "localname": "FarmerMacFundingAgreementsMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_FiveLargestCededReinsurersMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Five largest ceded reinsurers.",
        "label": "Five Largest Ceded Reinsurers [Member]"
       }
      }
     },
     "localname": "FiveLargestCededReinsurersMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_FixedMaturitiesAvailableForSaleWithGrossUnrealizedLossOfEqualToOrGreaterThanStatedPercentage": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Investment disclosure of fixed maturity securities available-for-sale with gross unrealized loss of equal to or greater than stated percentage.",
        "label": "Fixed Maturities Available For Sale With Gross Unrealized Loss Of Equal To Or Greater Than Stated Percentage",
        "terseLabel": "Fixed maturity securities available-for-sale with gross unrealized loss of equal to or greater than stated percentage"
       }
      }
     },
     "localname": "FixedMaturitiesAvailableForSaleWithGrossUnrealizedLossOfEqualToOrGreaterThanStatedPercentage",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_FundingAgreementsIssuedToCertainSpecialPurposeEntities": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of funding agreements issued during current year to certain special purpose entities that have issued debt securities for which payment of interest and principal is secured by such funding agreements.",
        "label": "Funding Agreements Issued To Certain Special Purpose Entities",
        "terseLabel": "Funding Agreements Issued To Certain Special Purpose Entities"
       }
      }
     },
     "localname": "FundingAgreementsIssuedToCertainSpecialPurposeEntities",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_FundingAgreementsRepaidToCertainSpecialPurposeEntities": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of funding agreements repaid during current year to certain SPEs that have issued debt securities for which payment of interest and principal is secured by such funding agreements.",
        "label": "Funding Agreements Repaid To Certain Special Purpose Entities",
        "verboseLabel": "Funding agreements repaid to certain SPEs"
       }
      }
     },
     "localname": "FundingAgreementsRepaidToCertainSpecialPurposeEntities",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_FuturesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Futures.",
        "label": "Futures [Member]",
        "terseLabel": "Interest rate futures"
       }
      }
     },
     "localname": "FuturesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_GainsLossesDeferredInAccumulatedOtherComprehensiveIncomeLossOnDerivativesEffectivePortion": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The current period gain (loss) recognized in other comprehensive income related to the effective portion of derivatives designated in cash flow hedges.",
        "label": "Gains Losses Deferred In Accumulated Other Comprehensive Income Loss On Derivatives Effective Portion",
        "terseLabel": "Amount of Gains (Losses) deferred in AOCI"
       }
      }
     },
     "localname": "GainsLossesDeferredInAccumulatedOtherComprehensiveIncomeLossOnDerivativesEffectivePortion",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_GainsLossesOnDerivativesNet": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The net realized (gain) loss on derivatives settled during the period, net.",
        "label": "(Gains) Losses On Derivatives Net",
        "negatedTerseLabel": "(Gains) losses on derivatives, net"
       }
      }
     },
     "localname": "GainsLossesOnDerivativesNet",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_IncomeTaxExpenseOnChangeInUnrealizedGainOrLoss": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item represents the tax effects occurring during the period which are related to the net unrealized gain (loss) resulting from changes in the fair [carrying] value during the period of available-for-sale securities and from changes in certain insurance related assets and liabilities. Such tax affects would have been charged or credited directly to other comprehensive income or to related components of shareholders' equity.",
        "label": "Income Tax Expense On Change In Unrealized Gain Or (Loss)",
        "negatedLabel": "Unrealized investment gains (losses) relating to: Deferred income tax benefit (expense)"
       }
      }
     },
     "localname": "IncomeTaxExpenseOnChangeInUnrealizedGainOrLoss",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_IndemnitiesAndGuaranteesContractualLimitationRange": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The range of the contractual limitation for guarantees and indemnities.",
        "label": "Indemnities And Guarantees Contractual Limitation Range",
        "terseLabel": "Indemnities and guarantees contractual limitation range"
       }
      }
     },
     "localname": "IndemnitiesAndGuaranteesContractualLimitationRange",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_InsuranceLiabilitiesBySegmentTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A table reflecting insurance liabilities by segment.",
        "label": "Insurance Liabilities By Segment [Table]",
        "terseLabel": "Insurance Liabilities By Segment [Table]"
       }
      }
     },
     "localname": "InsuranceLiabilitiesBySegmentTable",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_InsuranceLiabilitiesComprisedOfFuturePolicyBenefitsPolicyholderAccountBalancesAndOtherPolicyRelatedBalances": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The liability as of the balance sheet date to policyholders pertaining to insured events for long-duration contracts, deposits held under the terms of insurance contracts and for funds held that are returnable under the terms of insurance contracts that were not separately reported. Also includes unearned premiums and negative value of business acquired.",
        "label": "Insurance Liabilities Comprised Of Future Policy Benefits, Policyholder Account Balances And Other Policy-Related Balances",
        "verboseLabel": "Insurance liabilities comprised of future policy benefits, policyholder account balances and other policy-related balances"
       }
      }
     },
     "localname": "InsuranceLiabilitiesComprisedOfFuturePolicyBenefitsPolicyholderAccountBalancesAndOtherPolicyRelatedBalances",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_InsuranceLiabilitiesLineItems": {
     "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": "Insurance Liabilities [Line Items]",
        "terseLabel": "Insurance Liabilities [Line Items]"
       }
      }
     },
     "localname": "InsuranceLiabilitiesLineItems",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_InsuranceLiabilitiesTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Provides the balance of insurance liabilities for each period end.",
        "label": "Insurance Liabilities [Table Text Block]",
        "verboseLabel": "Insurance Liabilities"
       }
      }
     },
     "localname": "InsuranceLiabilitiesTableTextBlock",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "bhl_InterestrateforwardMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Interest-rate forward contracts involve the future sale (or purchase) of a debt instrument with a specification of the actual debt instrument that will be delivered at a future date, amount of the debt instrument to be delivered, price (interest rate) on the debt instrument when it is delivered, and date on which delivery will take place.",
        "label": "Interest rate forward [Member]",
        "terseLabel": "Interest rate forwards"
       }
      }
     },
     "localname": "InterestrateforwardMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_InvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateral": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The element presents the invested assets on deposit, held in trust and pledged as collateral.",
        "label": "Invested Assets On Deposit Held In Trust And Pledged As Collateral",
        "totalLabel": "Total invested assets on deposit, held in trust and pledged as collateral"
       }
      }
     },
     "localname": "InvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateral",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_InvestedAssetsPledgedAsCollateral": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralDetails": {
       "order": 3.0,
       "parentTag": "bhl_InvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateral",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Invested assets pledged as collateral.",
        "label": "Invested Assets Pledged As Collateral",
        "verboseLabel": "Invested assets pledged as collateral"
       }
      }
     },
     "localname": "InvestedAssetsPledgedAsCollateral",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_Liabilitiesforguaranteesonlongdurationcontractsreinsurancerecoverableincurredbenefitsnet": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "liabilities for guarantees on long duration contracts reinsurance recoverable incurred benefits net",
        "label": "liabilities for guarantees on long duration contracts reinsurance recoverable incurred benefits net",
        "terseLabel": "Liabilities for Guarantees on long duration contracts reinsurance recoverable incurred benefits net"
       }
      }
     },
     "localname": "Liabilitiesforguaranteesonlongdurationcontractsreinsurancerecoverableincurredbenefitsnet",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_LifeMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Life.",
        "label": "Life [Member]",
        "terseLabel": "Life",
        "verboseLabel": "Life"
       }
      }
     },
     "localname": "LifeMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaBySegmentDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_LifeandOtherMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Life and Other Insurance Product",
        "label": "Life and Other [Member]",
        "terseLabel": "Life and Other [Member]"
       }
      }
     },
     "localname": "LifeandOtherMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_LivingAndDeathBenefitGuaranteesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Living and death benefit guarantees associated with Retail Annuity business",
        "label": "Living And Death Benefit Guarantees [Member]"
       }
      }
     },
     "localname": "LivingAndDeathBenefitGuaranteesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_Ltv65To75PercentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt-to-value (DTV) ratio from 65 to 75%. Element name and standard label in DTV [numeric lower end] to [numeric higher end] Percent [Member] format.",
        "label": "Ltv 65 To 75 Percent [Member]",
        "terseLabel": "Loan-to-Value Ratio, 65% to 75%"
       }
      }
     },
     "localname": "Ltv65To75PercentMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_Ltv76To80PercentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt-to-value (DTV) ratio from 76 to 80%. Element name and standard label in DTV [numeric lower end] to [numeric higher end] Percent [Member] format.",
        "label": "Ltv 76 To 80 Percent [Member]",
        "terseLabel": "Loan-to-Value Ratio, 76% to 80%"
       }
      }
     },
     "localname": "Ltv76To80PercentMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_LtvLessThan65PercentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt-to-value (DTV) ratio less than 65%. Element name and standard label in DTV Greater Than [low end numeric value] Percent [Member] or DTV Less Than [high end numeric value] Percent [Member] formats.",
        "label": "Ltv Less Than 65 Percent [Member]",
        "terseLabel": "Loan-to-Value Ratio, Less than 65%"
       }
      }
     },
     "localname": "LtvLessThan65PercentMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MLUSASurplusNotesdue2038Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "MLUSA Surplus Notes due 2038.",
        "label": "MLUSA Surplus Notes due 2038 [Member]",
        "terseLabel": "Surplus Note Due 2038"
       }
      }
     },
     "localname": "MLUSASurplusNotesdue2038Member",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MRDSurplusNotesDue2032And2033Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "MRD Surplus Notes due 2032 and 2033.",
        "label": "MRD Surplus Notes Due 2032 And 2033 [Member]",
        "terseLabel": "Surplus Notes Due 2032 And 2033"
       }
      }
     },
     "localname": "MRDSurplusNotesDue2032And2033Member",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MRDSurplusNotesdue2032Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "MRD Surplus Notes due 2032.",
        "label": "MRD Surplus Notes due 2032 [Member]",
        "terseLabel": "Surplus Note Due 2032"
       }
      }
     },
     "localname": "MRDSurplusNotesdue2032Member",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MRDSurplusNotesdue2033Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "MRD Surplus Notes due 2033.",
        "label": "MRD Surplus Notes due 2033 [Member]",
        "terseLabel": "Surplus Note Due 2033"
       }
      }
     },
     "localname": "MRDSurplusNotesdue2033Member",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_Maturity30to180DaysMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Maturity period that is more than 29 days but fewer than 180 days from the reporting date for repurchase agreements and similar transactions, for example, but not limited to, securities lending arrangements.",
        "label": "Maturity 30 to 180 Days [Member]",
        "verboseLabel": "Remaining Tenor of Securities Lending Agreements: 1 to 6 Months"
       }
      }
     },
     "localname": "Maturity30to180DaysMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MeasurementInputLongTermEquityVolatilitiesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement Input, Long Term Equity Volatilities [Member]",
        "label": "Measurement Input, Long Term Equity Volatilities [Member]",
        "terseLabel": "Measurement Input, Long Term Equity Volatilities [Member]"
       }
      }
     },
     "localname": "MeasurementInputLongTermEquityVolatilitiesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MetlifeIncMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "MetLife, Inc.",
        "label": "Metlife Inc [Member]",
        "terseLabel": "Metlife Inc [Member]"
       }
      }
     },
     "localname": "MetlifeIncMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MetlifeInvestmentManagementLLCMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Metlife Investment Management, LLC (formerly known as MetLife Investment Advisors, LLC)",
        "label": "Metlife Investment Management, LLC [Member]",
        "terseLabel": "MetLife Investment Management, LLC"
       }
      }
     },
     "localname": "MetlifeInvestmentManagementLLCMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MetropolitanLifeInsuranceCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Metropolitan Life Insurance Company.",
        "label": "Metropolitan Life Insurance Company [Member]",
        "terseLabel": "Metropolitan Life Insurance Company [Member]"
       }
      }
     },
     "localname": "MetropolitanLifeInsuranceCompanyMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MortalityRiskMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Mortality risk associated with life insurance.",
        "label": "Mortality Risk [Member]"
       }
      }
     },
     "localname": "MortalityRiskMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MortalityRiskOnCaseByCaseBasisMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Mortality risk associated with life insurance, on a case by case basis.",
        "label": "Mortality Risk on Case by Case Basis [Member]",
        "terseLabel": "Mortality Risk on Case by Case Basis [Member]"
       }
      }
     },
     "localname": "MortalityRiskOnCaseByCaseBasisMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_MortgageBackedAndAssetBackedSecuritiesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Mortgage backed and asset backed securities.",
        "label": "Mortgage Backed And Asset Backed Securities [Member]",
        "verboseLabel": "Mortgage-backed and asset-backed securities"
       }
      }
     },
     "localname": "MortgageBackedAndAssetBackedSecuritiesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_NetAmountAtRiskByProductAndGuaranteeGeneralAndSeparateAccountValue": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Value of the separate and general accounts corresponding to the specified product, guarantee type and subset of the guarantee.",
        "label": "Net Amount At Risk By Product And Guarantee General And Separate Account Value",
        "verboseLabel": "Total account value (3)"
       }
      }
     },
     "localname": "NetAmountAtRiskByProductAndGuaranteeGeneralAndSeparateAccountValue",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetCededandAssumedLiabilitiesForGuaranteesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Net Ceded and Assumed Liabilities for Guarantees.",
        "label": "Net Ceded and Assumed Liabilities For Guarantees [Member]",
        "terseLabel": "Net Ceded and Assumed Liabilities For Guarantees"
       }
      }
     },
     "localname": "NetCededandAssumedLiabilitiesForGuaranteesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_NetChangeInOtherInvestedAssets": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 15.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The net cash outflow (inflow) from other investing activities including derivative instruments, leveraged leases and other invested assets.",
        "label": "Net Change In Other Invested Assets",
        "negatedLabel": "Net change in other invested assets"
       }
      }
     },
     "localname": "NetChangeInOtherInvestedAssets",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetChangeInPayablesForCollateralUnderSecuritiesLoanedAndOtherTransactions": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Net change in payables for collateral under securities loaned and other transactions.",
        "label": "Net change in payables for collateral under securities loaned and other transactions",
        "verboseLabel": "Net change in payables for collateral under securities loaned and other transactions"
       }
      }
     },
     "localname": "NetChangeInPayablesForCollateralUnderSecuritiesLoanedAndOtherTransactions",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetDerivativeGainLossMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Net Derivative Gain Loss.",
        "label": "Net Derivative Gain (Loss) [Member]",
        "terseLabel": "Net derivative gains (losses)"
       }
      }
     },
     "localname": "NetDerivativeGainLossMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_NetDerivativesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The derivative assets and liabilities measured with unobservable inputs, including interest rate contracts, foreign currency exchange rate contracts, credit contracts, and equity market contracts.",
        "label": "NetDerivatives [Member]",
        "terseLabel": "Net Derivatives"
       }
      }
     },
     "localname": "NetDerivativesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_NetLiabilitiesForGuaranteesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Net liabilities for guarantees.",
        "label": "Net Liabilities For Guarantees [Member]",
        "verboseLabel": "Net Liabilities For Guarantees"
       }
      }
     },
     "localname": "NetLiabilitiesForGuaranteesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLoss": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents net unrealized investment gains (losses).",
        "label": "Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Income Loss",
        "verboseLabel": "Net unrealized investment gains (losses)"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLoss",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossAllocatedFromDacAndVoba": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents net unrealized investment gains (losses) allocated from DAC and VOBA.",
        "label": "Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Income Loss Allocated From Dac And Voba",
        "verboseLabel": "Amounts allocated from: DAC, VOBA and DSI"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossAllocatedFromDacAndVoba",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossAllocatedFromInsuranceLiabilityLossRecognition": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents net unrealized investment gains (losses) allocated from insurance liability loss recognition.",
        "label": "Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Income Loss Allocated From Insurance Liability Loss Recognition",
        "verboseLabel": "Amounts allocated from: Future policy benefits"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossAllocatedFromInsuranceLiabilityLossRecognition",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossAttributableToCompany": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents net unrealized investment gains (losses) attributable to the Company.",
        "label": "Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Income Loss Attributable To Company",
        "periodEndLabel": "Unrealized investment gains (losses), end of year",
        "periodStartLabel": "Unrealized investment gains (losses), beginning of year"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossAttributableToCompany",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToDebtSecuritiesThatWereTemporarilyImpaired": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents net unrealized investment gains (losses) related to fixed maturity securities that were temporarily impaired.",
        "label": "Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Income Loss Related To Debt Securities That Were Temporarily Impaired",
        "verboseLabel": "Fixed maturity securities"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToDebtSecuritiesThatWereTemporarilyImpaired",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToDeferredIncomeTaxBenefitExpense": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents net unrealized investment gains (losses) related to deferred income tax benefit (expense).",
        "label": "Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Income Loss Related To Deferred Income Tax Benefit Expense",
        "verboseLabel": "Deferred income tax benefit (expense)"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToDeferredIncomeTaxBenefitExpense",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToDerivatives": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents net unrealized investment gains (losses) related to derivatives.",
        "label": "Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Income Loss Related To Derivatives",
        "verboseLabel": "Derivatives"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToDerivatives",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToEquitySecurities": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents net unrealized investment gains (losses) related to equity securities.",
        "label": "Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Income Loss Related To Equity Securities",
        "verboseLabel": "Equity securities"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToEquitySecurities",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToOtherInvestments": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents net unrealized investment gains (losses) related to other investments.",
        "label": "Net Unrealized Investment Gains Losses Included In Accumulated Other Comprehensive Income Loss Related To Other Investments",
        "verboseLabel": "Other"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossRelatedToOtherInvestments",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossSubtotalOfAllocatedAmounts": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents the subtotal of unrealized investment gains (losses) related to allocated amounts.",
        "label": "Net Unrealized Investment Gains (Losses) Included In Accumulated Other Comprehensive Income (Loss) Subtotal Of Allocated Amounts",
        "verboseLabel": "Subtotal"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossSubtotalOfAllocatedAmounts",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossSubtotalOfInvestmentGainsLossesComponents": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item presents the subtotal of net unrealized investment gains (losses) relating to fixed maturity securities, equity securities, derivatives and other investments.",
        "label": "Net Unrealized Investment Gains (Losses) Included In Accumulated Other Comprehensive Income (Loss) Subtotal Of Investment Gains (Losses) Components",
        "verboseLabel": "Subtotal"
       }
      }
     },
     "localname": "NetUnrealizedInvestmentGainsLossesIncludedInAccumulatedOtherComprehensiveIncomeLossSubtotalOfInvestmentGainsLossesComponents",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_NewEnglandLifeInsuranceCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "New England Life Insurance Company [Member]",
        "label": "New England Life Insurance Company [Member]",
        "terseLabel": "New England Life Insurance Company [Member]"
       }
      }
     },
     "localname": "NewEnglandLifeInsuranceCompanyMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_NonIncomeProducingDebtSecuritiesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Non-income producing debt securities.",
        "label": "Non-Income Producing Debt Securities [Member]",
        "terseLabel": "Non-Income Producing Debt Securities"
       }
      }
     },
     "localname": "NonIncomeProducingDebtSecuritiesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_NonRecourseDebtDue2030Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt for which creditor does not have general recourse to the debtor but rather has recourse only to the property used for collateral in the transaction or other specific property.",
        "label": "Non Recourse Debt Due 2030 [Member]",
        "terseLabel": "Non-recourse Debt Due 2030"
       }
      }
     },
     "localname": "NonRecourseDebtDue2030Member",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_NotesReceivableFairValueByLoanToValueAsPercentageOfNotesReceivableFairValue": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Ratio with notes receivable at estimated fair value by loan to value ratio in numerator and total notes receivable at estimated fair value in the denominator. See NotesReceivableFairValueDisclosure for definition of notes receivable at estimated fair value.",
        "label": "Notes Receivable Fair Value By Loan To Value As Percentage Of Notes Receivable Fair Value",
        "terseLabel": "Estimated Fair Value of Recorded Investment as a % of Total"
       }
      }
     },
     "localname": "NotesReceivableFairValueByLoanToValueAsPercentageOfNotesReceivableFairValue",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_NotesReceivableGrossByLoanToValueAsPercentageOfNotesReceivableGross": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Ratio with notes receivable gross by loan to value ratio in numerator and total notes receivable gross in the denominator. See NotesReceivableGross for definition of notes receivable gross.",
        "label": "Notes Receivable Gross By Loan To Value As Percentage Of Notes Receivable Gross",
        "terseLabel": "Recorded Investment as a % of Total"
       }
      }
     },
     "localname": "NotesReceivableGrossByLoanToValueAsPercentageOfNotesReceivableGross",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_NotesReceivableGrossByPerformanceStatusAsPercentageOfNotesReceivableGross": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Ratio with notes receivable gross by performance status in numerator and total notes receivable gross in the denominator. See NotesReceivableGross for definition of notes receivable gross.",
        "label": "Notes Receivable Gross By Performance Status As Percentage Of Notes Receivable Gross",
        "terseLabel": "Recorded Investment as a % of Total"
       }
      }
     },
     "localname": "NotesReceivableGrossByPerformanceStatusAsPercentageOfNotesReceivableGross",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_OffsettingAssetsAndLiabilitiesTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of derivative and other financial assets and liabilities that are subject to offsetting, including master netting arrangements.",
        "label": "Offsetting Assets and Liabilities [Table Text Block]",
        "verboseLabel": "Estimated Fair Value of Derivative Assets and Liabilities after Master Netting Agreements and Cash Collateral"
       }
      }
     },
     "localname": "OffsettingAssetsAndLiabilitiesTableTextBlock",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "bhl_OtherComprehensiveIncomeLossNetofTaxnotincludingchangeinaccountingprinciple": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome": {
       "order": 2.0,
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Other Comprehensive Income (Loss), Net of Tax not Including Change in Accounting Principle",
        "label": "Other Comprehensive Income (Loss), Net of Tax not including change in accounting principle",
        "negatedTotalLabel": "Other comprehensive income (loss), net of tax"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossNetofTaxnotincludingchangeinaccountingprinciple",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_OtherIncomeCeded": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_OtherIncome",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fees, commissions and other revenues ceded to other insurers as a result of reinsurance agreements.",
        "label": "Other Income Ceded",
        "terseLabel": "Reinsurance ceded"
       }
      }
     },
     "localname": "OtherIncomeCeded",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_OtherIncomeDirect": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_OtherIncome",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fees, commissions and other revenues earned from all insurance before adding amounts assumed from other insurers or subtracting amounts ceded to other insurers.",
        "label": "Other Income Direct",
        "verboseLabel": "Direct other revenues"
       }
      }
     },
     "localname": "OtherIncomeDirect",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_OtherInvestedAssetsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Other invested assets.",
        "label": "Other invested assets [Member]",
        "terseLabel": "Other invested assets"
       }
      }
     },
     "localname": "OtherInvestedAssetsMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsOtherInvestedAssetsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_OtherInvestmentsFairValueDisclosure": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value portion of other investments not otherwise specified in the taxonomy.",
        "label": "Other Investments Fair Value Disclosure",
        "terseLabel": "Other Investments Fair Value Disclosure"
       }
      }
     },
     "localname": "OtherInvestmentsFairValueDisclosure",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_OtherThanTemporaryImpairmentsOnDebtSecuritiesTransferredToOtherComprehensiveIncomeLoss": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Other-than-temporary impairments on fixed maturity securities transferred to other comprehensive income loss.",
        "label": "Other Than Temporary Impairments On Debt Securities Transferred To Other Comprehensive Income Loss",
        "terseLabel": "Gross Unrealized OTTI Losses"
       }
      }
     },
     "localname": "OtherThanTemporaryImpairmentsOnDebtSecuritiesTransferredToOtherComprehensiveIncomeLoss",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_OutstandingFundingAgreementsToCertainSpecialPurposeEntities": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of funding agreements outstanding to certain SPEs that have issued debt securities for which payment of interest and principal is secured by such funding agreements.",
        "label": "Outstanding Funding Agreements To Certain Special Purpose Entities",
        "verboseLabel": "Outstanding funding agreements to certain SPEs"
       }
      }
     },
     "localname": "OutstandingFundingAgreementsToCertainSpecialPurposeEntities",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_ParentshareholderspercentageMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of Parent shareholders' shares.",
        "label": "Parent shareholders' percentage [Member]",
        "terseLabel": "Parent shareholders' percentage [Member]"
       }
      }
     },
     "localname": "ParentshareholderspercentageMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_PercentageEstimatedFairValue": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This percentage represents the net estimated fair value of freestanding derivatives.",
        "label": "Percentage Estimated Fair Value",
        "terseLabel": "Percentage Estimated Fair Value"
       }
      }
     },
     "localname": "PercentageEstimatedFairValue",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsOtherInvestedAssetsNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_PercentageOfAllowanceForLoanAndLeaseLossesRealEstateToMortgageLoansOnRealEstateCommercialAndConsumerNet": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of Allowance For Loan And Lease Losses on Real Estate to total Mortgage Loans on Real Estate.",
        "label": "Percentage Of Allowance For Loan And Lease Losses Real Estate To Mortgage Loans On Real Estate Commercial And Consumer Net",
        "negatedLabel": "Mortgage loans valuation allowances as a percentage of total mortgage loans, net"
       }
      }
     },
     "localname": "PercentageOfAllowanceForLoanAndLeaseLossesRealEstateToMortgageLoansOnRealEstateCommercialAndConsumerNet",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_PercentageOfLoansReceivableToMortgageLoansOnRealEstateCommercialAndConsumerNet": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of loans receivable to total mortgage loans on real estate, net of valuation allowances.",
        "label": "Percentage Of Loans Receivable To Mortgage Loans On Real Estate Commercial And Consumer Net",
        "terseLabel": "Mortgage loans, gross as a percentage of total mortgage loans, net"
       }
      }
     },
     "localname": "PercentageOfLoansReceivableToMortgageLoansOnRealEstateCommercialAndConsumerNet",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_PercentageOfMortgageLoansOnRealEstateToMortgageLoansOnRealEstateCommercialAndConsumerNet": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of Mortgage Loans On Real Estate to total Mortgage Loans on Real Estate.",
        "label": "Percentage Of Mortgage Loans On Real Estate To Mortgage Loans On Real Estate Commercial And Consumer Net",
        "terseLabel": "Mortgage loans, net as a percentage of total mortgage loans, net"
       }
      }
     },
     "localname": "PercentageOfMortgageLoansOnRealEstateToMortgageLoansOnRealEstateCommercialAndConsumerNet",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_PercentageOfUSTreasuryAndAgencySecuritiesAtEstimatedFairValueOfSecuritiesOnLoanRelatingToCashCollateralOnOpen": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The percentage of US Treasury and agency securities at estimated fair value of securities on loan relating to cash collateral on open.",
        "label": "Percentage Of US Treasury And Agency Securities At Estimated Fair Value Of Securities On Loan Relating To Cash Collateral On Open",
        "terseLabel": "Percentage of Securities at Estimated Fair Value of Securities on Loan Relating to Cash Collateral on Open"
       }
      }
     },
     "localname": "PercentageOfUSTreasuryAndAgencySecuritiesAtEstimatedFairValueOfSecuritiesOnLoanRelatingToCashCollateralOnOpen",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_PercentageofReinvestmentPortfolioinFixedMaturitySecurities": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The percentage of the reinvestment portfolio acquired with the cash collateral consists mainly of Fixed maturities.",
        "label": "Percentage of Reinvestment Portfolio in Fixed Maturity Securities",
        "terseLabel": "Percentage of Reinvestment Portfolio in Fixed Maturity Securities"
       }
      }
     },
     "localname": "PercentageofReinvestmentPortfolioinFixedMaturitySecurities",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "bhl_PolicyholderAccountBalancesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Policyholder Account Balances.",
        "label": "Policyholder Account Balances [Member]",
        "verboseLabel": "Policyholder account balances"
       }
      }
     },
     "localname": "PolicyholderAccountBalancesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_PolicyholderBenefitAndClaimMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Primary financial statement caption encompassing policyholder benefits and claims.",
        "label": "Policyholder Benefit And Claim [Member]",
        "verboseLabel": "Policyholder benefits and claims"
       }
      }
     },
     "localname": "PolicyholderBenefitAndClaimMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_PolicyholderContractDepositsFairValueDisclosure": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value portion of the liability of policyholders for deposits held under the terms of insurance contracts.",
        "label": "Policyholder Contract Deposits, Fair Value Disclosure",
        "verboseLabel": "Policyholder account balances"
       }
      }
     },
     "localname": "PolicyholderContractDepositsFairValueDisclosure",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_PremiumsEarnedAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Premiums Earned [Abstract]",
        "label": "Premiums Earned [Abstract]",
        "verboseLabel": "Premiums:"
       }
      }
     },
     "localname": "PremiumsEarnedAbstract",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_PresentValueOfFutureInsuranceProfitsAmortizationExpenseOtherExpenses": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization of present value of future insurance profits related to other expenses.",
        "label": "Present Value Of Future Insurance Profits Amortization Expense Other Expenses",
        "negatedLabel": "Other expenses of VOBA"
       }
      }
     },
     "localname": "PresentValueOfFutureInsuranceProfitsAmortizationExpenseOtherExpenses",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_ProceedsFromContributionsFromAffiliatesAssociatedWithSaleOfJointVentureInterest": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership that is associated with the sale of joint venture interest.",
        "label": "Proceeds From Contributions From Affiliates Associated With Sale Of Joint Venture Interest",
        "terseLabel": "Capital contribution associated with the sale of operating joint venture interest to a former affiliate"
       }
      }
     },
     "localname": "ProceedsFromContributionsFromAffiliatesAssociatedWithSaleOfJointVentureInterest",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_ProceedsFromSalesOrDisposalsOfFixedMaturityAndEquitySecuritiesAndComponentsOfFixedMaturityAndEquitySecuritiesNetInvestmentGainsAndLossesTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This table presents the proceeds from sales or disposals of fixed maturity and equity securities and the components of fixed maturity and equity securities net investment gains and losses.",
        "label": "Proceeds From Sales Or Disposals Of Fixed Maturity And Equity Securities And Components Of Fixed Maturity And Equity Securities Net Investment Gains And Losses [Table Text Block]",
        "verboseLabel": "Sales or Disposals of Fixed Maturity Securities"
       }
      }
     },
     "localname": "ProceedsFromSalesOrDisposalsOfFixedMaturityAndEquitySecuritiesAndComponentsOfFixedMaturityAndEquitySecuritiesNetInvestmentGainsAndLossesTableTextBlock",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "bhl_QuotaShareReinsuranceForCertainDisabilityBusinessMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Quota-share reinsurance agreements for certain disability business.",
        "label": "Quota Share Reinsurance for Certain Disability Business [Member]"
       }
      }
     },
     "localname": "QuotaShareReinsuranceForCertainDisabilityBusinessMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_Reductionofotherinvestedassetsinconnectionwithasaleofoperatingjointventureinteresttoanaffiliate": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 12.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Reduction of other invested assets in connection with a sale of operating joint venture interest to an affiliate",
        "label": "Reduction of other invested assets in connection with a sale of operating joint venture interest to an affiliate",
        "terseLabel": "Sale of operating joint venture interest to a former affiliate"
       }
      }
     },
     "localname": "Reductionofotherinvestedassetsinconnectionwithasaleofoperatingjointventureinteresttoanaffiliate",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_Reductionofpolicyholderaccountbalancesinconnectionwithareinsurancetransactions": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Reduction of policyholder account balances in connection with a reinsurance transactions",
        "label": "Reduction of policyholder account balances in connection with a reinsurance transactions",
        "terseLabel": "Reduction of policyholder account balances in connection with reinsurance transactions"
       }
      }
     },
     "localname": "Reductionofpolicyholderaccountbalancesinconnectionwithareinsurancetransactions",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_ReinsuranceDisclosureLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "-- None. No documentation exists for this element. --",
        "label": "Reinsurance Disclosure [Line Items]",
        "terseLabel": "Reinsurance Disclosure [Line Items]"
       }
      }
     },
     "localname": "ReinsuranceDisclosureLineItems",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceTables"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_ReinsuranceMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Affiliated reinsurance.",
        "label": "Reinsurance [Member]",
        "terseLabel": "Reinsurance"
       }
      }
     },
     "localname": "ReinsuranceMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_ReinsuranceRecoverablesCeded": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of reinsurance recoverable balances in both asset and liability accounts that have been ceded.",
        "label": "Reinsurance Recoverables, Ceded",
        "verboseLabel": "Reinsurance recoverables"
       }
      }
     },
     "localname": "ReinsuranceRecoverablesCeded",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_Returnsofcapital": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 6.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of other increase (decrease) in additional paid in capital (APIC) due to a return of capital",
        "label": "Returns of capital",
        "negatedLabel": "Return of capital"
       }
      }
     },
     "localname": "Returnsofcapital",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_RunoffMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Segment which consists of products no longer actively sold and which are separately managed.",
        "label": "Run-off [Member]",
        "terseLabel": "Run-off",
        "verboseLabel": "Run-off"
       }
      }
     },
     "localname": "RunoffMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaBySegmentDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_ScheduleOfEffectOfReinsuranceOnIncomeStatementTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule Of Effect Of Reinsurance On Income Statement.",
        "label": "Schedule Of Effect Of Reinsurance On Income Statement [Table]",
        "terseLabel": "Effect Of Reinsurance [Table]"
       }
      }
     },
     "localname": "ScheduleOfEffectOfReinsuranceOnIncomeStatementTable",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceTables"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_ScheduleOfSecuritiesByDurationAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule Of Securities By Duration Axis.",
        "label": "Schedule of Securities by Duration [Axis]",
        "terseLabel": "Schedule of Securities by Duration [Axis]"
       }
      }
     },
     "localname": "ScheduleOfSecuritiesByDurationAxis",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_ScheduleOfSecuritiesByPercentAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule Of Securities By Percent Axis.",
        "label": "Schedule of Securities by Percent [Axis]",
        "terseLabel": "Schedule of Securities by Percent [Axis]"
       }
      }
     },
     "localname": "ScheduleOfSecuritiesByPercentAxis",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_ScheduleofDividendPaymentRestrictionsTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of statutory restrictions on the payment of dividends as prescribed by the National Association of Insurance Commissioners or state regulatory authorities.",
        "label": "Schedule of Dividend Payment Restrictions [Table Text Block]",
        "terseLabel": "Schedule of Dividend Payment Restrictions [Table Text Block]"
       }
      }
     },
     "localname": "ScheduleofDividendPaymentRestrictionsTableTextBlock",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "bhl_SecondaryGuaranteesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Secondary Guarantees.",
        "label": "Secondary Guarantees [Member]",
        "terseLabel": "Secondary Guarantees"
       }
      }
     },
     "localname": "SecondaryGuaranteesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_SecuritiesByDurationDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Securities By Duration.",
        "label": "Securities by Duration [Domain]",
        "terseLabel": "Securities by Duration [Domain]"
       }
      }
     },
     "localname": "SecuritiesByDurationDomain",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_SecuritiesByPercentDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Securities By Percent.",
        "label": "Securities By Percent [Domain]",
        "terseLabel": "Securities By Percent [Domain]"
       }
      }
     },
     "localname": "SecuritiesByPercentDomain",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_SecuritiesLendingReinvestmentPortfolioEstimatedFairValue": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This element represents the estimated fair value of the securities lending reinvestment portfolio.",
        "label": "Securities Lending Reinvestment Portfolio Estimated Fair Value",
        "verboseLabel": "Reinvestment portfolio \u2014 estimated fair value"
       }
      }
     },
     "localname": "SecuritiesLendingReinvestmentPortfolioEstimatedFairValue",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_SeparateAccountAssetsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Separate Account Assets Member.",
        "label": "Separate account assets [Member]",
        "terseLabel": "Separate account assets"
       }
      }
     },
     "localname": "SeparateAccountAssetsMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_SixMonthsOrGreaterMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Six months or greater.",
        "label": "Six Months Or Greater [Member]",
        "terseLabel": "Six months or greater"
       }
      }
     },
     "localname": "SixMonthsOrGreaterMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_StructuredSecuritiesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Structured Securities.",
        "label": "Structured Securities [Member]",
        "verboseLabel": "Structured securities"
       }
      }
     },
     "localname": "StructuredSecuritiesMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_SupplementaryInsuranceInformationFuturePolicyBenefitsOtherPolicyRelatedBalancesAndPolicyholderDividendObligation": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The sum of the following as of the balance sheet date: 1) The known and estimated amounts payable as of the balance sheet date to policyholders pertaining to insured events for long-duration contracts, which can be viewed as either (a) the present value of future benefits to be paid to or on behalf of policyholders and expenses less the present value of future net premiums payable under the insurance contracts or (b) the accumulated amount of net premiums already collected less the accumulated amount of benefits and expenses already paid to or on behalf of policyholders, 2) The liability to the policyholders for funds held that are returnable under the terms of insurance contracts that were not separately reported and 3) The excess of the cumulative actual closed block earnings over the cumulative expected (actuarially determined) closed block earnings (each) for the period from the actuarial calculation date to the date of measurement. The excess will result in future dividends to closed block policyholders, unless offset by less favorable than expected future performance of the closed block. The policyholder dividend obligation, which may not have a negative balance, recognizes that a portion of earnings in certain cases will not inure to the stockholders of the insurance entity.",
        "label": "Supplementary Insurance Information Future Policy Benefits Other Policy Related Balances And Policyholder Dividend Obligation",
        "terseLabel": "Future Policy Benefits and Other Policy-Related Balances"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationFuturePolicyBenefitsOtherPolicyRelatedBalancesAndPolicyholderDividendObligation",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_SupplementaryInsuranceInformationPremiumRevenueAndPolicyCharges": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sum of premiums earned on the income statement for all insurance and reinsurance contracts after subtracting any amounts ceded to another insurer and adding premiums assumed from other insurers, and income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products. May also include an entity's proportionate share of the income or loss before extraordinary items and other adjustments from its investments in: unconsolidated subsidiaries, associated companies, and corporate joint ventures, unincorporated joint ventures, general partnerships, and limited partnerships over which the entity exercises significant influence that are principally engaged in insurance underwriting, reinsurance, or insurance sales activities.",
        "label": "Supplementary Insurance Information Premium Revenue And Policy Charges",
        "verboseLabel": "Premiums and Universal Life and Investment-Type Product Policy Fees"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationPremiumRevenueAndPolicyCharges",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_SupplementaryInsuranceInformationUnearnedRevenue": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of revenue not yet earned and included within the future policy benefits, other policy-related balances and policyholder dividend obligations.",
        "label": "Supplementary Insurance Information, Unearned Revenue",
        "terseLabel": "Unearned Revenue"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationUnearnedRevenue",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_TransfersOfFinancialAssetsAccountedForAsSaleAmortizedCostOfAssetsObtainedAsProceeds": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the amortized cost of assets received on transfer of financial assets in a securitization, asset-backed financing arrangement, or a similar transfer which transaction is recognized as a sale of the transferred financial assets.",
        "label": "Transfers of Financial Assets Accounted for as Sale, Amortized Cost of Assets Obtained as Proceeds",
        "terseLabel": "Invested assets transferred, amortized cost"
       }
      }
     },
     "localname": "TransfersOfFinancialAssetsAccountedForAsSaleAmortizedCostOfAssetsObtainedAsProceeds",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_TransitionServicesAgreements": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Costs incurred for services provided by the former parent during transition period after spin-off.",
        "label": "Transition Services Agreements",
        "terseLabel": "Transition Services Agreements"
       }
      }
     },
     "localname": "TransitionServicesAgreements",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_TwentyPercentOrMoreMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "20% or more Member.",
        "label": "Twenty Percent Or More [Member]",
        "terseLabel": "20% or more"
       }
      }
     },
     "localname": "TwentyPercentOrMoreMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_UnfundedCommitmentsForInvestmentsAccountedForUnderEquityMethod": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the balance of unfunded commitments related to investments accounted for using the equity method.",
        "label": "Unfunded Commitments For Investments Accounted For Under Equity Method",
        "verboseLabel": "Unfunded commitments for investments accounted for under the equity method"
       }
      }
     },
     "localname": "UnfundedCommitmentsForInvestmentsAccountedForUnderEquityMethod",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCollectivelySignificantEquityMethodInvestmentsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "bhl_UniversalAndVariableLifeContractsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contracts resulting in claim amounts that the Company would incur if death claims were filed on all contracts on the balance sheet date.",
        "label": "Universal And Variable Life Contracts [Member]",
        "verboseLabel": "Universal and Variable Life Contracts"
       }
      }
     },
     "localname": "UniversalAndVariableLifeContractsMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_UniversallifeandinvestmenttypeproductpolicyfeesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Universal life and investment-type product policy fees [Abstract]",
        "label": "Universal life and investment-type product policy fees [Abstract]",
        "terseLabel": "Universal life and investment-type product policy fees [Abstract]"
       }
      }
     },
     "localname": "UniversallifeandinvestmenttypeproductpolicyfeesAbstract",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "bhl_VariableAnnuityAndVariableLifeMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Variable Annuity and Variable Life.",
        "label": "Variable Annuity And Variable Life [Member]",
        "verboseLabel": "Variable Annuity and Variable Life"
       }
      }
     },
     "localname": "VariableAnnuityAndVariableLifeMember",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "bhl_VariableInterestEntityMaterialExistence": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of material Variable Interest Entities (VIE) about which the entity is required to make GAAP disclosures.",
        "label": "Variable Interest Entity, Material Existence",
        "terseLabel": "Material VIEs"
       }
      }
     },
     "localname": "VariableInterestEntityMaterialExistence",
     "nsuri": "http://www.brighthousefinancial.com/20191231",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesNarrativeDetails"
     ],
     "xbrltype": "pureItemType"
    },
    "dei_AmendmentFlag": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.",
        "label": "Amendment Flag",
        "terseLabel": "Amendment Flag"
       }
      }
     },
     "localname": "AmendmentFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_CityAreaCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Area code of city",
        "label": "City Area Code",
        "terseLabel": "City Area Code"
       }
      }
     },
     "localname": "CityAreaCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_CoverAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cover page.",
        "label": "Cover page."
       }
      }
     },
     "localname": "CoverAbstract",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "gMonthDayItemType"
    },
    "dei_DocumentAnnualReport": {
     "auth_ref": [
      "r686"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true only for a form used as an annual report.",
        "label": "Document Annual Report",
        "terseLabel": "Document Annual Report"
       }
      }
     },
     "localname": "DocumentAnnualReport",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_DocumentFiscalPeriodFocus": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fiscal period values are FY, Q1, Q2, and Q3.  1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.",
        "label": "Document Fiscal Period Focus",
        "terseLabel": "Document Fiscal Period Focus"
       }
      }
     },
     "localname": "DocumentFiscalPeriodFocus",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "dateItemType"
    },
    "dei_DocumentTransitionReport": {
     "auth_ref": [
      "r685"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true only for a form used as a transition report.",
        "label": "Document Transition Report",
        "terseLabel": "Document Transition Report"
       }
      }
     },
     "localname": "DocumentTransitionReport",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "submissionTypeItemType"
    },
    "dei_EntityAddressAddressLine1": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name",
        "label": "Entity Address, Address Line One",
        "terseLabel": "Entity Address, Address Line One"
       }
      }
     },
     "localname": "EntityAddressAddressLine1",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressCityOrTown": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the City or Town",
        "label": "Entity Address, City or Town",
        "terseLabel": "Entity Address, City or Town"
       }
      }
     },
     "localname": "EntityAddressCityOrTown",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressPostalZipCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Code for the postal or zip code",
        "label": "Entity Address, Postal Zip Code",
        "terseLabel": "Entity Address, Postal Zip Code"
       }
      }
     },
     "localname": "EntityAddressPostalZipCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressStateOrProvince": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the state or province.",
        "label": "Entity Address, State or Province",
        "terseLabel": "Entity Address, State or Province"
       }
      }
     },
     "localname": "EntityAddressStateOrProvince",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "stateOrProvinceItemType"
    },
    "dei_EntityCentralIndexKey": {
     "auth_ref": [
      "r687"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "sharesItemType"
    },
    "dei_EntityCurrentReportingStatus": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.",
        "label": "Entity Current Reporting Status",
        "terseLabel": "Entity Current Reporting Status"
       }
      }
     },
     "localname": "EntityCurrentReportingStatus",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains.",
        "label": "Entity [Domain]",
        "terseLabel": "Entity [Domain]"
       }
      }
     },
     "localname": "EntityDomain",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails",
      "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityCaptiveEquityAndIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityStatutoryCapitalAndSurplusDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryNetIncomeDetails",
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails",
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "dei_EntityEmergingGrowthCompany": {
     "auth_ref": [
      "r687"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate if registrant meets the emerging growth company criteria.",
        "label": "Entity Emerging Growth Company",
        "terseLabel": "Entity Emerging Growth Company"
       }
      }
     },
     "localname": "EntityEmergingGrowthCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityFileNumber": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.",
        "label": "Entity File Number",
        "terseLabel": "Entity File Number"
       }
      }
     },
     "localname": "EntityFileNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "fileNumberItemType"
    },
    "dei_EntityFilerCategory": {
     "auth_ref": [
      "r687"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "filerCategoryItemType"
    },
    "dei_EntityIncorporationStateCountryCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Two-character EDGAR code representing the state or country of incorporation.",
        "label": "Entity Incorporation, State or Country Code",
        "terseLabel": "Entity Incorporation, State or Country Code"
       }
      }
     },
     "localname": "EntityIncorporationStateCountryCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "edgarStateCountryItemType"
    },
    "dei_EntityInteractiveDataCurrent": {
     "auth_ref": [
      "r688"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).",
        "label": "Entity Interactive Data Current",
        "terseLabel": "Entity Interactive Data Current"
       }
      }
     },
     "localname": "EntityInteractiveDataCurrent",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityPublicFloat": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.",
        "label": "Entity Public Float",
        "terseLabel": "Entity Public Float"
       }
      }
     },
     "localname": "EntityPublicFloat",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "dei_EntityRegistrantName": {
     "auth_ref": [
      "r687"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityShellCompany": {
     "auth_ref": [
      "r687"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.",
        "label": "Entity Shell Company",
        "terseLabel": "Entity Shell Company"
       }
      }
     },
     "localname": "EntityShellCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntitySmallBusiness": {
     "auth_ref": [
      "r687"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicates that the company is a Smaller Reporting Company (SRC).",
        "label": "Entity Small Business",
        "terseLabel": "Entity Small Business"
       }
      }
     },
     "localname": "EntitySmallBusiness",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityTaxIdentificationNumber": {
     "auth_ref": [
      "r687"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.",
        "label": "Entity Tax Identification Number",
        "terseLabel": "Entity Tax Identification Number"
       }
      }
     },
     "localname": "EntityTaxIdentificationNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "employerIdItemType"
    },
    "dei_EntityVoluntaryFilers": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.",
        "label": "Entity Voluntary Filers",
        "terseLabel": "Entity Voluntary Filers"
       }
      }
     },
     "localname": "EntityVoluntaryFilers",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityWellKnownSeasonedIssuer": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A.",
        "label": "Entity Well-known Seasoned Issuer",
        "terseLabel": "Entity Well-known Seasoned Issuer"
       }
      }
     },
     "localname": "EntityWellKnownSeasonedIssuer",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_LegalEntityAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The set of legal entities associated with a report.",
        "label": "Legal Entity [Axis]",
        "terseLabel": "Legal Entity [Axis]"
       }
      }
     },
     "localname": "LegalEntityAxis",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails",
      "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityCaptiveEquityAndIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityStatutoryCapitalAndSurplusDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryNetIncomeDetails",
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails",
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "dei_LocalPhoneNumber": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Local phone number for entity.",
        "label": "Local Phone Number",
        "terseLabel": "Local Phone Number"
       }
      }
     },
     "localname": "LocalPhoneNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "srt_AffiliatedEntityMember": {
     "auth_ref": [
      "r287",
      "r444",
      "r446",
      "r684",
      "r690"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "An affiliate is a party that, directly or indirectly through one or more intermediaries, controls, is controlled by, or is under common control with the entity.",
        "label": "Affiliated Entity [Member]",
        "terseLabel": "Affiliated Entity"
       }
      }
     },
     "localname": "AffiliatedEntityMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceTables",
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_CondensedBalanceSheetStatementTable": {
     "auth_ref": [
      "r133",
      "r335",
      "r691"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations.",
        "label": "Condensed Balance Sheet Statement [Table]",
        "terseLabel": "Condensed Balance Sheet Statement [Table]"
       }
      }
     },
     "localname": "CondensedBalanceSheetStatementTable",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_CondensedBalanceSheetStatementsCaptionsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Condensed Balance Sheet Statements, Captions [Line Items]",
        "terseLabel": "Condensed Balance Sheet Statements, Captions [Line Items]"
       }
      }
     },
     "localname": "CondensedBalanceSheetStatementsCaptionsLineItems",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_CondensedCashFlowStatementTable": {
     "auth_ref": [
      "r133",
      "r335",
      "r697"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about condensed cash flow statement, including, but not limited to, cash flow statements of consolidated entities and consolidation eliminations.",
        "label": "Condensed Cash Flow Statement [Table]",
        "terseLabel": "Condensed Cash Flow Statement [Table]"
       }
      }
     },
     "localname": "CondensedCashFlowStatementTable",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_CondensedCashFlowStatementsCaptionsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Condensed Cash Flow Statements, Captions [Line Items]",
        "terseLabel": "Condensed Cash Flow Statements, Captions [Line Items]"
       }
      }
     },
     "localname": "CondensedCashFlowStatementsCaptionsLineItems",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Financial Information Disclosure [Abstract]"
       }
      }
     },
     "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "srt_CondensedFinancialStatementsCaptionsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Condensed Financial Statements, Captions [Line Items]",
        "terseLabel": "Condensed Financial Statements, Captions [Line Items]"
       }
      }
     },
     "localname": "CondensedFinancialStatementsCaptionsLineItems",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_CondensedIncomeStatementTable": {
     "auth_ref": [
      "r133",
      "r335",
      "r697"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about condensed income statement including, but not limited to, income statements of consolidated entities and consolidation eliminations.",
        "label": "Condensed Income Statement [Table]",
        "terseLabel": "Condensed Income Statement [Table]"
       }
      }
     },
     "localname": "CondensedIncomeStatementTable",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_CondensedIncomeStatementsCaptionsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Condensed Income Statements, Captions [Line Items]",
        "terseLabel": "Condensed Income Statements, Captions [Line Items]"
       }
      }
     },
     "localname": "CondensedIncomeStatementsCaptionsLineItems",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidatedEntitiesAxis": {
     "auth_ref": [
      "r684",
      "r690"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by consolidated entity or group of entities.",
        "label": "Consolidated Entities [Axis]",
        "terseLabel": "Consolidated Entities [Axis]"
       }
      }
     },
     "localname": "ConsolidatedEntitiesAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityStatutoryCapitalAndSurplusDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryNetIncomeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidatedEntitiesDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Entity or group of entities consolidated into reporting entity.",
        "label": "Consolidated Entities [Domain]",
        "terseLabel": "Consolidated Entities [Domain]"
       }
      }
     },
     "localname": "ConsolidatedEntitiesDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityStatutoryCapitalAndSurplusDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryNetIncomeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ConsolidationItemsAxis": {
     "auth_ref": [
      "r160",
      "r170"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by components, eliminations, non-segment corporate-level activity and reconciling items used in consolidating a parent entity and its subsidiaries or its operating segments.",
        "label": "Consolidation Items [Axis]",
        "terseLabel": "Consolidation Items [Axis]"
       }
      }
     },
     "localname": "ConsolidationItemsAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidationItemsDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Components, elimination, non-segment corporate-level activity and reconciling items used in consolidating a parent entity and its subsidiaries or its operating segments.",
        "label": "Consolidation Items [Domain]",
        "terseLabel": "Consolidation Items [Domain]"
       }
      }
     },
     "localname": "ConsolidationItemsDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_CounterpartyNameAxis": {
     "auth_ref": [
      "r46",
      "r122",
      "r701"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by name of counterparty. A counterparty is the other party that participates in a financial transaction. Examples include, but not limited to, the name of the financial institution.",
        "label": "Counterparty Name [Axis]",
        "terseLabel": "Counterparty Name [Axis]"
       }
      }
     },
     "localname": "CounterpartyNameAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_LifeInsuranceInForceAssumed": {
     "auth_ref": [
      "r583",
      "r694"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of life insurance issued and outstanding assumed from other entity, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.",
        "label": "SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Assumed",
        "verboseLabel": "Life Insurance in Force, Assumed Amounts"
       }
      }
     },
     "localname": "LifeInsuranceInForceAssumed",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "srt_LifeInsuranceInForceCeded": {
     "auth_ref": [
      "r582",
      "r693"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of life insurance issued and outstanding ceded to other entity, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.",
        "label": "SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Ceded",
        "verboseLabel": "Life Insurance in Force, Ceded Amounts"
       }
      }
     },
     "localname": "LifeInsuranceInForceCeded",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "srt_LifeInsuranceInForceGross": {
     "auth_ref": [
      "r581",
      "r692"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before effect of reinsurance, of life insurance issued and outstanding, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.",
        "label": "SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Gross",
        "verboseLabel": "Life Insurance in Force, Gross Amounts"
       }
      }
     },
     "localname": "LifeInsuranceInForceGross",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "srt_LifeInsuranceInForceNet": {
     "auth_ref": [
      "r584",
      "r695"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after effect of reinsurance, of life insurance issued and outstanding, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.",
        "label": "SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Net",
        "terseLabel": "Life Insurance in Force, Net Amounts"
       }
      }
     },
     "localname": "LifeInsuranceInForceNet",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "srt_LifeInsuranceInForcePercentageAssumedToNet": {
     "auth_ref": [
      "r585",
      "r696"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of assumed life insurance contract issued and outstanding to life insurance contract issued and outstanding after effect of reinsurance, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value.",
        "label": "SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Percentage Assumed to Net",
        "terseLabel": "Life Insurance in Force, Percentage Assumed to Net"
       }
      }
     },
     "localname": "LifeInsuranceInForcePercentageAssumedToNet",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "srt_MaximumMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Upper limit of the provided range.",
        "label": "Maximum [Member]",
        "terseLabel": "Maximum"
       }
      }
     },
     "localname": "MaximumMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesContingenciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_MinimumMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Lower limit of the provided range.",
        "label": "Minimum [Member]",
        "terseLabel": "Minimum"
       }
      }
     },
     "localname": "MinimumMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesContingenciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ParentCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The registrant that controls, directly or indirectly, another entity (or entities). The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree.",
        "label": "Parent Company [Member]",
        "terseLabel": "Parent Company"
       }
      }
     },
     "localname": "ParentCompanyMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityStatutoryCapitalAndSurplusDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryNetIncomeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ProductOrServiceAxis": {
     "auth_ref": [
      "r172",
      "r282",
      "r283",
      "r606",
      "r614"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by product and service, or group of similar products and similar services.",
        "label": "Product and Service [Axis]",
        "terseLabel": "Product and Service [Axis]"
       }
      }
     },
     "localname": "ProductOrServiceAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherRevenuesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationPremiumsUniversalLifeAndInvestmentTypeProductPolicyFeesAndOtherRevenuesByMajorProductGroupDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ProductsAndServicesDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Product or service, or a group of similar products or similar services.",
        "label": "Product and Service [Domain]",
        "terseLabel": "Product and Service [Domain]"
       }
      }
     },
     "localname": "ProductsAndServicesDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherRevenuesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationPremiumsUniversalLifeAndInvestmentTypeProductPolicyFeesAndOtherRevenuesByMajorProductGroupDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RangeAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.",
        "label": "Statistical Measurement [Axis]",
        "terseLabel": "Statistical Measurement [Axis]"
       }
      }
     },
     "localname": "RangeAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesContingenciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RangeMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.",
        "label": "Statistical Measurement [Domain]",
        "terseLabel": "Statistical Measurement [Domain]"
       }
      }
     },
     "localname": "RangeMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesContingenciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]",
        "terseLabel": "SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]"
       }
      }
     },
     "localname": "ReinsurancePremiumsForInsuranceCompaniesByProductSegmentLineItems",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentTable": {
     "auth_ref": [
      "r586",
      "r700"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of supplemental information about reinsurance including, but not limited to, type of insurance, gross amount of premium, premium ceded to another company, premium assumed from another company, net amount of premium revenue, and percentage of premium assumed to net premium revenue.",
        "label": "SEC Schedule, 12-17, Insurance Companies, Reinsurance [Table]",
        "terseLabel": "SEC Schedule, 12-17, Insurance Companies, Reinsurance [Table]"
       }
      }
     },
     "localname": "ReinsurancePremiumsForInsuranceCompaniesByProductSegmentTable",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RepurchaseAgreementCounterpartyNameDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Named other party that participates in a financial transaction. Examples include, but not limited to, the name of the financial institution.",
        "label": "Counterparty Name [Domain]",
        "terseLabel": "Counterparty Name [Domain]"
       }
      }
     },
     "localname": "RepurchaseAgreementCounterpartyNameDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RestatementAdjustmentMember": {
     "auth_ref": [
      "r140",
      "r142",
      "r143",
      "r144"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Effect of a correction of an error, other prior year adjustment, or application of a new accounting pronouncement on a financial statement line item or any per share amounts. The cumulative effect of the change on retained earnings or net assets in the statement of financial position would also be represented under this domain member.",
        "label": "Restatement Adjustment [Member]",
        "terseLabel": "Restatement Adjustment"
       }
      }
     },
     "localname": "RestatementAdjustmentMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RestatementAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by revision of previously issued financial statements.",
        "label": "Restatement [Axis]",
        "terseLabel": "Restatement [Axis]"
       }
      }
     },
     "localname": "RestatementAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RestatementDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Revision of previously issued financial statements.",
        "label": "Restatement [Domain]",
        "terseLabel": "Restatement [Domain]"
       }
      }
     },
     "localname": "RestatementDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScenarioForecastMember": {
     "auth_ref": [
      "r689"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information reported for future period.",
        "label": "Forecast [Member]",
        "terseLabel": "Forecast [Member]"
       }
      }
     },
     "localname": "ScenarioForecastMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScenarioUnspecifiedDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Scenario reported, distinguishing information from actual fact. Includes, but is not limited to, pro forma and forecast. Excludes actual facts.",
        "label": "Scenario [Domain]",
        "terseLabel": "Scenario [Domain]"
       }
      }
     },
     "localname": "ScenarioUnspecifiedDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScheduleOfCondensedFinancialStatementsTable": {
     "auth_ref": [
      "r133",
      "r335",
      "r697",
      "r702",
      "r703",
      "r704"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about condensed financial statements, including, but not limited to, the balance sheet, income statement, and statement of cash flows.",
        "label": "Condensed Financial Statements [Table]",
        "terseLabel": "Condensed Financial Statements [Table]"
       }
      }
     },
     "localname": "ScheduleOfCondensedFinancialStatementsTable",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_StatementScenarioAxis": {
     "auth_ref": [
      "r252",
      "r452"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by scenario reported, distinguishing information from actual fact. Includes, but is not limited to, pro forma and forecast. Excludes actual facts.",
        "label": "Scenario [Axis]",
        "terseLabel": "Scenario [Axis]"
       }
      }
     },
     "localname": "StatementScenarioAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract]"
       }
      }
     },
     "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesAbstract",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "srt_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesReportableDataLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]",
        "terseLabel": "SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]"
       }
      }
     },
     "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesReportableDataLineItems",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTable": {
     "auth_ref": [
      "r679",
      "r698"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about investment held by insurance company, excluding investment in related party.",
        "label": "SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Table]",
        "terseLabel": "SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Table]"
       }
      }
     },
     "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTable",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTextBlock": {
     "auth_ref": [
      "r679",
      "r698"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure of information about investment held by insurance company, excluding investment in related party.",
        "label": "SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Text Block]",
        "terseLabel": "Summary of Investments, Other Than Investments in Related Parties"
       }
      }
     },
     "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesTextBlock",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedParties"
     ],
     "xbrltype": "textBlockItemType"
    },
    "srt_SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]"
       }
      }
     },
     "localname": "SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesAbstract",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "srt_SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlock": {
     "auth_ref": [
      "r586",
      "r700"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for the supplemental schedule of reinsurance information. Reinsurance schedule includes, but is not limited to, the type of insurance, gross amount of premiums, premiums ceded to other entities, premiums assumed from other entities, net amount of premium revenue, and the percentage of the premiums assumed to net premium revenue.",
        "label": "SEC Schedule, 12-17, Insurance Companies, Reinsurance [Text Block]",
        "verboseLabel": "Consolidated Reinsurance"
       }
      }
     },
     "localname": "SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlock",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsurance"
     ],
     "xbrltype": "textBlockItemType"
    },
    "srt_SupplementaryInsuranceInformationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationAbstract",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "srt_SupplementaryInsuranceInformationBySegmentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]",
        "terseLabel": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationBySegmentLineItems",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_SupplementaryInsuranceInformationBySegmentTable": {
     "auth_ref": [
      "r580",
      "r699"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about supplementary insurance information by segment. Includes, but is not limited to, deferred policy acquisition cost; future policy benefit, loss, claim and loss expenses; unearned premium; other policy claim and benefit payable; premium revenue; net investment income; benefit, claim, loss and settlement expenses; amortization of deferred policy acquisition cost; other operating expense; and premium written.",
        "label": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Table]",
        "terseLabel": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Table]"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationBySegmentTable",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock": {
     "auth_ref": [
      "r580",
      "r699"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for supplementary insurance information by segment. Includes, but is not limited to, deferred policy acquisition cost; future policy benefit, loss, claim and loss expenses; unearned premium; other policy claim and benefit payable; premium revenue; net investment income; benefit, claim, loss and settlement expenses; amortization of deferred policy acquisition cost; other operating expense; and premium written.",
        "label": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Disclosure [Text Block]",
        "terseLabel": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Disclosure [Text Block]"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformation"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_AccidentAndHealthInsuranceSegmentMember": {
     "auth_ref": [
      "r587",
      "r620"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Product line consisting of insurance against loss by illness or injury, including but not limited to medical, dental, disability, workmen's compensation and long-term care.",
        "label": "Accident and Health Insurance Product Line [Member]",
        "terseLabel": "Accident &amp; health insurance",
        "verboseLabel": "Other products"
       }
      }
     },
     "localname": "AccidentAndHealthInsuranceSegmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationPremiumsUniversalLifeAndInvestmentTypeProductPolicyFeesAndOtherRevenuesByMajorProductGroupDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AccountingChangesTextBlock": {
     "auth_ref": [
      "r145"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for reporting accounting changes, excludes error corrections information.",
        "label": "Accounting Changes [Text Block]",
        "terseLabel": "Accounting Changes [Text Block]"
       }
      }
     },
     "localname": "AccountingChangesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OrganizationalChanges"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments": {
     "auth_ref": [
      "r108"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.",
        "label": "Accretion (Amortization) of Discounts and Premiums, Investments",
        "negatedLabel": "Amortization of premiums and accretion of discounts associated with investments, net"
       }
      }
     },
     "localname": "AccretionAmortizationOfDiscountsAndPremiumsInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccruedIncomeTaxes": {
     "auth_ref": [
      "r9",
      "r11",
      "r307",
      "r486",
      "r536"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due.  This amount is the total of current and noncurrent accrued income taxes.",
        "label": "Accrued Income Taxes",
        "terseLabel": "Current income tax payable"
       }
      }
     },
     "localname": "AccruedIncomeTaxes",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccruedInvestmentIncomeReceivable": {
     "auth_ref": [
      "r15",
      "r483",
      "r543"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 3.0,
       "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",
        "verboseLabel": "Accrued investment income"
       }
      }
     },
     "localname": "AccruedInvestmentIncomeReceivable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember": {
     "auth_ref": [
      "r52",
      "r60",
      "r62",
      "r345"
     ],
     "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, attributable to the parent.",
        "label": "Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]",
        "verboseLabel": "Unrealized Gains (Losses) on Derivatives"
       }
      }
     },
     "localname": "AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember": {
     "auth_ref": [
      "r53",
      "r54",
      "r55",
      "r60",
      "r62"
     ],
     "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": "AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]",
        "verboseLabel": "Unrealized Investment Gains (Losses), Net of Related Offsets"
       }
      }
     },
     "localname": "AccumulatedNetUnrealizedInvestmentGainLossMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax": {
     "auth_ref": [
      "r52",
      "r57",
      "r59"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.",
        "label": "Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax",
        "verboseLabel": "Accumulated Other Comprehensive Income (Loss)"
       }
      }
     },
     "localname": "AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": {
     "auth_ref": [
      "r57",
      "r59",
      "r60"
     ],
     "calculation": {
      "http://www.brighthousefinancial.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",
        "periodEndLabel": "Balance end of period",
        "periodStartLabel": "Balance beginning of period",
        "terseLabel": "Accumulated Other Comprehensive Income (Loss), Net of Tax",
        "verboseLabel": "Accumulated other comprehensive income (loss)"
       }
      }
     },
     "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeMember": {
     "auth_ref": [
      "r56",
      "r60",
      "r62",
      "r346"
     ],
     "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": "AOCI Attributable to Parent [Member]",
        "verboseLabel": "Accumulated Other Comprehensive Income (Loss)"
       }
      }
     },
     "localname": "AccumulatedOtherComprehensiveIncomeMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AccumulatedTranslationAdjustmentMember": {
     "auth_ref": [
      "r51",
      "r60",
      "r62",
      "r346"
     ],
     "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]",
        "verboseLabel": "Foreign Currency Translation Adjustments"
       }
      }
     },
     "localname": "AccumulatedTranslationAdjustmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AdditionalPaidInCapital": {
     "auth_ref": [
      "r16"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "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. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.",
        "label": "Additional Paid in Capital",
        "terseLabel": "Additional Paid in Capital",
        "verboseLabel": "Additional paid-in capital"
       }
      }
     },
     "localname": "AdditionalPaidInCapital",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AdjustmentsForNewAccountingPronouncementsAxis": {
     "auth_ref": [
      "r139"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AdjustmentsToAdditionalPaidInCapitalOther": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of other increase (decrease) in additional paid in capital (APIC).",
        "label": "Adjustments to Additional Paid in Capital, Other",
        "terseLabel": "Sale of operating joint venture interest to former affiliate"
       }
      }
     },
     "localname": "AdjustmentsToAdditionalPaidInCapitalOther",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]",
        "verboseLabel": "Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:"
       }
      }
     },
     "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AllOtherCorporateBondsMember": {
     "auth_ref": [
      "r188"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Investments in corporate fixed maturity debt securities classified as other.",
        "label": "Other Corporate Bonds [Member]",
        "terseLabel": "All other corporate bonds"
       }
      }
     },
     "localname": "AllOtherCorporateBondsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AllowanceForLoanAndLeaseLossesRealEstate": {
     "auth_ref": [
      "r601"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio.",
        "label": "Allowance for Loan and Lease Losses, Real Estate",
        "negatedLabel": "Mortgage loans valuation allowances",
        "terseLabel": "Mortgage loans valuation allowances",
        "verboseLabel": "Mortgage loans valuation allowances"
       }
      }
     },
     "localname": "AllowanceForLoanAndLeaseLossesRealEstate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheetsParenthetical",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AmortizationOfIntangibleAssets": {
     "auth_ref": [
      "r107",
      "r233",
      "r238"
     ],
     "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",
        "negatedLabel": "Amortization of VODA"
       }
      }
     },
     "localname": "AmortizationOfIntangibleAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDeferredSalesInducementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AnnuitizationBenefitMember": {
     "auth_ref": [
      "r613"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The benefit in long-duration contracts to provide a guaranteed annuity payment commencing with the annuitization date. The fixed periodic annuity payments may be determined using the higher of the current accumulated account value that exists at the date of annuitization or the guaranteed amount.",
        "label": "Annuitization Benefit [Member]",
        "verboseLabel": "Guaranteed Annuitization Benefits"
       }
      }
     },
     "localname": "AnnuitizationBenefitMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AssetBackedSecuritiesMember": {
     "auth_ref": [
      "r199",
      "r285"
     ],
     "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]",
        "verboseLabel": "ABS"
       }
      }
     },
     "localname": "AssetBackedSecuritiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_Assets": {
     "auth_ref": [
      "r163",
      "r484",
      "r535"
     ],
     "calculation": {
      "http://www.brighthousefinancial.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": "Total assets",
        "totalLabel": "Total assets",
        "verboseLabel": "Total assets"
       }
      }
     },
     "localname": "Assets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Assets [Abstract]",
        "verboseLabel": "Assets"
       }
      }
     },
     "localname": "AssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheetsParenthetical",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetsFairValueDisclosure": {
     "auth_ref": [
      "r409"
     ],
     "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",
        "verboseLabel": "Total assets"
       }
      }
     },
     "localname": "AssetsFairValueDisclosure",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsFairValueDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Assets, Fair Value Disclosure [Abstract]",
        "verboseLabel": "Assets [Abstract]"
       }
      }
     },
     "localname": "AssetsFairValueDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetsHeldInTrust": {
     "auth_ref": [
      "r123"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralDetails": {
       "order": 2.0,
       "parentTag": "bhl_InvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateral",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations.",
        "label": "Assets Held-in-trust",
        "verboseLabel": "Invested assets held-in-trust (reinsurance agreements)"
       }
      }
     },
     "localname": "AssetsHeldInTrust",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssumedPremiumsEarned": {
     "auth_ref": [
      "r563",
      "r583",
      "r634",
      "r637"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_PremiumsEarnedNet",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of earned premiums assumed from other entities.",
        "label": "Assumed Premiums Earned",
        "verboseLabel": "Reinsurance assumed"
       }
      }
     },
     "localname": "AssumedPremiumsEarned",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis": {
     "auth_ref": [
      "r189",
      "r226"
     ],
     "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": "Amortized Cost",
        "verboseLabel": "Amortized cost of fixed maturity securities available-for-sale"
       }
      }
     },
     "localname": "AvailableForSaleDebtSecuritiesAmortizedCostBasis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheetsParenthetical",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax": {
     "auth_ref": [
      "r191"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.",
        "label": "Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax",
        "terseLabel": "Gross Unrealized Gains"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.",
        "label": "Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax",
        "terseLabel": "Gross Unrealized Temporary Losses"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": {
     "auth_ref": [],
     "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",
        "verboseLabel": "Gross Unrealized Losses of securities in an unrealized loss position for 12 months or greater"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss": {
     "auth_ref": [
      "r202"
     ],
     "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",
        "terseLabel": "Gross unrealized losses of securities in an unrealized loss position"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": {
     "auth_ref": [],
     "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",
        "verboseLabel": "Gross Unrealized Losses of securities in an unrealized loss position for less than 12 months"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue": {
     "auth_ref": [],
     "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",
        "verboseLabel": "Estimated Fair Value of securities in an unrealized loss position for less than 12 months"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue": {
     "auth_ref": [],
     "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",
        "verboseLabel": "Estimated Fair Value of securities in an unrealized loss position for 12 months or greater"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost": {
     "auth_ref": [
      "r196"
     ],
     "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",
        "verboseLabel": "Amortized Cost, Due after five years through ten years"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": {
     "auth_ref": [
      "r192",
      "r196",
      "r511"
     ],
     "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",
        "verboseLabel": "Estimated Fair Value, Due after five years through ten years"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost": {
     "auth_ref": [
      "r195"
     ],
     "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",
        "verboseLabel": "Amortized Cost, Due after one year through five years"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": {
     "auth_ref": [
      "r192",
      "r195",
      "r510"
     ],
     "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",
        "verboseLabel": "Estimated Fair Value, Due after one year through five years"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost": {
     "auth_ref": [
      "r197"
     ],
     "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",
        "verboseLabel": "Amortized Cost, Due after ten years"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue": {
     "auth_ref": [
      "r192",
      "r197",
      "r512"
     ],
     "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",
        "verboseLabel": "Estimated Fair Value, Due after ten years"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost": {
     "auth_ref": [
      "r194"
     ],
     "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",
        "verboseLabel": "Amortized Cost, Due in one year or less"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue": {
     "auth_ref": [
      "r192",
      "r194",
      "r509"
     ],
     "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",
        "verboseLabel": "Estimated Fair Value, Due in one year or less"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost": {
     "auth_ref": [
      "r198"
     ],
     "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",
        "verboseLabel": "Amortized Cost, Structured Securities"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue": {
     "auth_ref": [
      "r198"
     ],
     "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",
        "verboseLabel": "Estimated Fair Value, Structured Securities"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesDebtSecurities": {
     "auth_ref": [
      "r185",
      "r190",
      "r226"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_Investments",
       "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",
        "terseLabel": "Estimated Fair Value",
        "verboseLabel": "Fixed maturity securities available-for-sale, at estimated fair value (amortized cost: $63,083 and $59,672, respectively)"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesDebtSecurities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMaturitiesOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesEquitySecurities": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_Investments",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of equity securities categorized neither as held-to-maturity nor as trading.",
        "label": "Available-for-sale Securities, Equity Securities",
        "terseLabel": "Available-for-sale Securities, Equity Securities",
        "verboseLabel": "Equity securities, at estimated fair value"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesEquitySecurities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesGrossRealizedGains": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.",
        "label": "Available-for-sale Securities, Gross Realized Gains",
        "verboseLabel": "Gross investment gains"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesGrossRealizedGains",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSalesOrDisposalsOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of investment positions in available-for-sale investments in a continuous unrealized loss position for less than one year or normal operating cycle, if longer, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.",
        "label": "Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year",
        "verboseLabel": "Total number of securities in an unrealized loss position for less than 12 months"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_AvailableForSaleSecuritiesTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.",
        "label": "Available-for-sale Securities [Table Text Block]",
        "verboseLabel": "Fixed Maturity Securities AFS by Sector"
       }
      }
     },
     "localname": "AvailableForSaleSecuritiesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_AvailableforsaleSecuritiesGrossRealizedLossesExcludingOtherThanTemporaryImpairments": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of loss realized on the sale of debt or equity securities classified as available-for-sale. Excludes other than temporary impairments (OTTI).",
        "label": "Available-for-sale Securities, Realized Losses, Excluding Other than Temporary Impairments",
        "negatedLabel": "Gross investment losses"
       }
      }
     },
     "localname": "AvailableforsaleSecuritiesGrossRealizedLossesExcludingOtherThanTemporaryImpairments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSalesOrDisposalsOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1": {
     "auth_ref": [
      "r200"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.",
        "label": "Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions",
        "terseLabel": "Number of Securities"
       }
      }
     },
     "localname": "AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of investment positions in available-for-sale investments that have been in a continuous unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.",
        "label": "Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year",
        "verboseLabel": "Total number of securities in an unrealized loss position for 12 months or greater"
       }
      }
     },
     "localname": "AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_BalanceSheetLocationAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by location on balance sheet (statement of financial position).",
        "label": "Balance Sheet Location [Axis]",
        "terseLabel": "Balance Sheet Location [Axis]"
       }
      }
     },
     "localname": "BalanceSheetLocationAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsOtherInvestedAssetsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BalanceSheetLocationDomain": {
     "auth_ref": [
      "r369",
      "r375"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Location in the balance sheet (statement of financial position).",
        "label": "Balance Sheet Location [Domain]",
        "terseLabel": "Balance Sheet Location [Domain]"
       }
      }
     },
     "localname": "BalanceSheetLocationDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsOtherInvestedAssetsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_BalancedFundsMember": {
     "auth_ref": [
      "r285"
     ],
     "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 a moderate investment objective.",
        "label": "Balanced Funds [Member]",
        "verboseLabel": "Balanced"
       }
      }
     },
     "localname": "BalancedFundsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_BenefitsLossesAndExpenses": {
     "auth_ref": [
      "r575"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The total amount of expense recognized during the period for future policy benefits, claims and claims adjustment costs, and for selling, general and administrative costs.",
        "label": "Benefits, Losses and Expenses",
        "totalLabel": "Total expenses"
       }
      }
     },
     "localname": "BenefitsLossesAndExpenses",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BenefitsLossesAndExpensesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Benefits, Losses and Expenses [Abstract]",
        "terseLabel": "Expenses"
       }
      }
     },
     "localname": "BenefitsLossesAndExpensesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BondsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt security, in which the authorized issuer owes the holder a debt and is obliged to repay the principal and interest (the coupon).",
        "label": "Bonds [Member]",
        "verboseLabel": "Total bonds"
       }
      }
     },
     "localname": "BondsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CapitalizationOfDeferredPolicyAcquisitionCostsPolicy": {
     "auth_ref": [
      "r117",
      "r592"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for deferred policy acquisition costs, including the nature, type, and amount of capitalized costs incurred to write or acquire insurance contracts, and the basis for and methodologies applied in capitalizing and amortizing such costs.",
        "label": "Deferred Policy Acquisition Costs, Policy [Policy Text Block]",
        "terseLabel": "Deferred Policy Acquisition Costs, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "CapitalizationOfDeferredPolicyAcquisitionCostsPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CarryingReportedAmountFairValueDisclosureMember": {
     "auth_ref": [
      "r430",
      "r431"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CashAndCashEquivalentsAtCarryingValue": {
     "auth_ref": [
      "r2",
      "r23",
      "r109"
     ],
     "calculation": {
      "http://www.brighthousefinancial.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",
        "terseLabel": "Cash and cash equivalents",
        "verboseLabel": "Cash and cash equivalents"
       }
      }
     },
     "localname": "CashAndCashEquivalentsAtCarryingValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashAndCashEquivalentsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "label": "Cash and Cash Equivalents [Member]",
        "terseLabel": "Cash, cash equivalents and short-term investments"
       }
      }
     },
     "localname": "CashAndCashEquivalentsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CashAndCashEquivalentsPolicyTextBlock": {
     "auth_ref": [
      "r4",
      "r111",
      "r117"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.",
        "label": "Cash and Cash Equivalents, Policy [Policy Text Block]",
        "terseLabel": "Cash and Cash Equivalents, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "CashAndCashEquivalentsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CashCashEquivalentsAndShortTermInvestments": {
     "auth_ref": [
      "r23"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.",
        "label": "Cash, Cash Equivalents, and Short-term Investments",
        "terseLabel": "Cash, Cash Equivalents, and Short-term Investments"
       }
      }
     },
     "localname": "CashCashEquivalentsAndShortTermInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": {
     "auth_ref": [
      "r102",
      "r109",
      "r116"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents",
        "periodEndLabel": "Cash, cash equivalents and restricted cash, end of year",
        "periodStartLabel": "Cash, cash equivalents and restricted cash, beginning of year",
        "terseLabel": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents"
       }
      }
     },
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect": {
     "auth_ref": [
      "r102",
      "r434"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect",
        "terseLabel": "Change in cash, cash equivalents and restricted cash",
        "totalLabel": "Change in cash, cash equivalents and restricted cash"
       }
      }
     },
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashDividendsPaidToParentCompany": {
     "auth_ref": [
      "r134"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50% or less owned persons accounted for using the equity method.",
        "label": "SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Subsidiaries and Equity Method Investees",
        "terseLabel": "Cash dividends received from subsidiaries"
       }
      }
     },
     "localname": "CashDividendsPaidToParentCompany",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashFlowHedgingMember": {
     "auth_ref": [
      "r366"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Hedge of the exposure to variability in the cash flows of a recognized asset or liability, or of a forecasted transaction, that is attributable to a particular risk.",
        "label": "Cash Flow Hedging [Member]",
        "terseLabel": "Cash Flow Hedging",
        "verboseLabel": "Cash Flow Hedging"
       }
      }
     },
     "localname": "CashFlowHedgingMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]",
        "terseLabel": "Non-cash transactions:"
       }
      }
     },
     "localname": "CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CededCreditRiskAxis": {
     "auth_ref": [
      "r664"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by reinsurer or group of reinsurers of concentrated credit risk arising from a reinsurance arrangement.",
        "label": "Ceded Credit Risk, Reinsurer [Axis]",
        "terseLabel": "Ceded Credit Risk [Axis]"
       }
      }
     },
     "localname": "CededCreditRiskAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CededCreditRiskCollateralizationAxis": {
     "auth_ref": [
      "r664"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information as to collaterization of reinsurance recoverables.",
        "label": "Ceded Credit Risk, Collateralization [Axis]",
        "terseLabel": "Ceded Credit Risk, Collateralization [Axis]"
       }
      }
     },
     "localname": "CededCreditRiskCollateralizationAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CededCreditRiskCollateralizationDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Collateralization of ceded credit risk.",
        "label": "Ceded Credit Risk, Collateralization [Domain]",
        "terseLabel": "Ceded Credit Risk, Collateralization [Domain]"
       }
      }
     },
     "localname": "CededCreditRiskCollateralizationDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CededCreditRiskLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Ceded Credit Risk [Line Items]"
       }
      }
     },
     "localname": "CededCreditRiskLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CededCreditRiskReinsurerDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Reinsurer or group of reinsurers for whom the entity has a concentration of credit risk.",
        "label": "Ceded Credit Risk, Reinsurer [Domain]",
        "terseLabel": "Ceded Credit Risk, Reinsurer [Domain]"
       }
      }
     },
     "localname": "CededCreditRiskReinsurerDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CededCreditRiskSecuredMember": {
     "auth_ref": [
      "r664"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Reinsurance recoverable that is secured by collateral.",
        "label": "Ceded Credit Risk, Secured [Member]",
        "terseLabel": "Ceded Credit Risk, Secured [Member]"
       }
      }
     },
     "localname": "CededCreditRiskSecuredMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CededCreditRiskTable": {
     "auth_ref": [
      "r664"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about reinsurer or group of reinsurers for whom the entity has a concentration of credit risk.",
        "label": "Ceded Credit Risk [Table]",
        "terseLabel": "Ceded Credit Risk [Table]"
       }
      }
     },
     "localname": "CededCreditRiskTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CededCreditRiskUnsecuredMember": {
     "auth_ref": [
      "r664"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Reinsurance recoverable that is not secured by collateral.",
        "label": "Ceded Credit Risk, Unsecured [Member]",
        "terseLabel": "Ceded Credit Risk, Unsecured [Member]"
       }
      }
     },
     "localname": "CededCreditRiskUnsecuredMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CededPremiumsEarned": {
     "auth_ref": [
      "r563",
      "r582",
      "r631",
      "r632",
      "r635",
      "r637"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_PremiumsEarnedNet",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of earned premiums ceded to other entities.",
        "label": "Ceded Premiums Earned",
        "negatedLabel": "Reinsurance ceded"
       }
      }
     },
     "localname": "CededPremiumsEarned",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CertainLoansAcquiredInTransferAccountedForAsAvailableForSaleDebtSecuritiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities [Abstract]",
        "verboseLabel": "Purchased credit impaired investments, by invested asset class, held:"
       }
      }
     },
     "localname": "CertainLoansAcquiredInTransferAccountedForAsAvailableForSaleDebtSecuritiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsPurchasedCreditImpairedInvestmentsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CertainLoansAcquiredInTransferAccountedForAsAvailableForSaleDebtSecuritiesCarryingAmountNet": {
     "auth_ref": [
      "r182",
      "r183"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and other-than-temporary impairments), for certain contractual rights to receive money on demand or on fixed or determinable dates. This relates to loans accounted for as available-for-sale debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.",
        "label": "Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities, Carrying Amount, Net",
        "verboseLabel": "Carrying value"
       }
      }
     },
     "localname": "CertainLoansAcquiredInTransferAccountedForAsAvailableForSaleDebtSecuritiesCarryingAmountNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsPurchasedCreditImpairedInvestmentsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CertainLoansAcquiredInTransferAccountedForAsAvailableForSaleDebtSecuritiesOutstandingBalance": {
     "auth_ref": [
      "r182",
      "r183"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. This relates to loans accounted for as available-for-sale debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.",
        "label": "Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities, Outstanding Balance",
        "verboseLabel": "Outstanding principal and interest balance"
       }
      }
     },
     "localname": "CertainLoansAcquiredInTransferAccountedForAsAvailableForSaleDebtSecuritiesOutstandingBalance",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsPurchasedCreditImpairedInvestmentsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAccretion": {
     "auth_ref": [
      "r182",
      "r184"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.",
        "label": "Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion",
        "terseLabel": "Accretion recognized in earnings"
       }
      }
     },
     "localname": "CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAccretion",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsPurchasedCreditImpairedInvestmentsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1": {
     "auth_ref": [
      "r403"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.",
        "label": "Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge",
        "terseLabel": "Net Derivative Gains (Losses) Recognized for Hedged Items"
       }
      }
     },
     "localname": "ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CollateralAlreadyPostedAggregateFairValue": {
     "auth_ref": [
      "r388"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.",
        "label": "Collateral Already Posted, Aggregate Fair Value",
        "verboseLabel": "Estimated Fair Value of Collateral Provided (2)"
       }
      }
     },
     "localname": "CollateralAlreadyPostedAggregateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CommercialMortgageBackedSecuritiesMember": {
     "auth_ref": [
      "r198",
      "r285"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Securities collateralized by commercial real estate mortgage loans.",
        "label": "Commercial Mortgage Backed Securities [Member]",
        "verboseLabel": "CMBS"
       }
      }
     },
     "localname": "CommercialMortgageBackedSecuritiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommercialPortfolioSegmentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Portfolio segment of the company's total financing receivables related to commercial receivables.",
        "label": "Commercial Portfolio Segment [Member]",
        "terseLabel": "Commercial"
       }
      }
     },
     "localname": "CommercialPortfolioSegmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommitmentsAndContingencies": {
     "auth_ref": [
      "r29",
      "r251",
      "r499",
      "r546"
     ],
     "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": "Contingencies, Commitments and Guarantees (Note 14)"
       }
      }
     },
     "localname": "CommitmentsAndContingencies",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.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/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_CommitmentsAndContingenciesPolicyTextBlock": {
     "auth_ref": [
      "r117",
      "r265",
      "r681",
      "r682"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for commitments and contingencies, which may include policies for recognizing and measuring loss and gain contingencies.",
        "label": "Commitments and Contingencies, Policy [Policy Text Block]",
        "terseLabel": "Commitments and Contingencies, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "CommitmentsAndContingenciesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CommitmentsContingenciesAndGuaranteesTextBlock": {
     "auth_ref": [
      "r249",
      "r258",
      "r266"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for commitments, contingencies, and guarantees.",
        "label": "Commitments Contingencies and Guarantees [Text Block]",
        "terseLabel": "Contingencies, Commitments and Guarantees"
       }
      }
     },
     "localname": "CommitmentsContingenciesAndGuaranteesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuarantees"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CommitmentsToExtendCreditMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Loan commitments are legally binding commitments to extend credit to a counterparty under certain terms and conditions.",
        "label": "Commitments to Extend Credit [Member]",
        "terseLabel": "Commitments to Fund Partnership Investments and Private Corporate Bond Investments"
       }
      }
     },
     "localname": "CommitmentsToExtendCreditMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesCommitmentsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommonStockParOrStatedValuePerShare": {
     "auth_ref": [
      "r14"
     ],
     "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 or Stated Value Per Share",
        "verboseLabel": "Common stock, par value"
       }
      }
     },
     "localname": "CommonStockParOrStatedValuePerShare",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_CommonStockSharesAuthorized": {
     "auth_ref": [
      "r14"
     ],
     "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",
        "verboseLabel": "Common stock, shares authorized"
       }
      }
     },
     "localname": "CommonStockSharesAuthorized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockSharesIssued": {
     "auth_ref": [
      "r14"
     ],
     "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",
        "verboseLabel": "Common stock, shares issued"
       }
      }
     },
     "localname": "CommonStockSharesIssued",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockSharesOutstanding": {
     "auth_ref": [
      "r14",
      "r274"
     ],
     "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",
        "verboseLabel": "Common stock, shares outstanding"
       }
      }
     },
     "localname": "CommonStockSharesOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedFinancialInformationParentCompanyCondensedBalanceSheetsPhantomDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockValue": {
     "auth_ref": [
      "r14"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.",
        "label": "Common Stock, Value, Issued",
        "terseLabel": "Common stock, par value $25,000 per share; 4,000 shares authorized; 3,000 shares issued and outstanding",
        "verboseLabel": "Common stock, par value $25,000 per share; 4,000 shares authorized; 3,000 shares issued and outstanding"
       }
      }
     },
     "localname": "CommonStockValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Components of Deferred Tax Assets and Liabilities [Abstract]",
        "terseLabel": "Components of Deferred Tax Assets and Liabilities [Abstract]"
       }
      }
     },
     "localname": "ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ComprehensiveIncomeNetOfTax": {
     "auth_ref": [
      "r65",
      "r67",
      "r68"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.",
        "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent",
        "terseLabel": "Comprehensive income (loss), net of tax, Attributable to Parent",
        "totalLabel": "Comprehensive income (loss), net of tax, Attributable to Parent"
       }
      }
     },
     "localname": "ComprehensiveIncomeNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest": {
     "auth_ref": [
      "r65",
      "r67",
      "r339",
      "r340",
      "r355"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome": {
       "order": 2.0,
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.",
        "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest",
        "terseLabel": "Less: Comprehensive income (loss) attributable to noncontrolling interests, net of income tax"
       }
      }
     },
     "localname": "ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest": {
     "auth_ref": [
      "r65",
      "r67",
      "r338",
      "r355"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome": {
       "order": 1.0,
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax",
       "weight": 1.0
      }
     },
     "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. Excludes changes in equity resulting from investments by owners and distributions to owners.",
        "label": "Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest",
        "totalLabel": "Comprehensive income (loss)"
       }
      }
     },
     "localname": "ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock": {
     "auth_ref": [
      "r135",
      "r335"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for condensed financial information, including the financial position, cash flows, and the results of operations of the registrant (parent company) as of the same dates or for the same periods for which audited consolidated financial statements are being presented. Alternatively, the details of this disclosure can be reported by the specific parent company taxonomy elements, indicating the appropriate date and period contexts in an instance document.",
        "label": "Condensed Financial Information of Parent Company Only Disclosure [Text Block]",
        "terseLabel": "Condensed Financial Information (Parent Company)"
       }
      }
     },
     "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompany"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ConsolidationPolicyTextBlock": {
     "auth_ref": [
      "r117",
      "r341",
      "r356",
      "r357"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting.  The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.",
        "label": "Consolidation, Policy [Policy Text Block]",
        "terseLabel": "Consolidation, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "ConsolidationPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CorporateAndOtherMember": {
     "auth_ref": [
      "r157"
     ],
     "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 &amp; Other",
        "verboseLabel": "Corporate &amp; Other"
       }
      }
     },
     "localname": "CorporateAndOtherMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaBySegmentDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CorporateDebtSecuritiesMember": {
     "auth_ref": [
      "r285",
      "r289",
      "r654"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt securities issued by domestic or foreign corporate business, banks and other entities with a promise of repayment.",
        "label": "Corporate Debt Securities [Member]",
        "terseLabel": "U.S. corporate and foreign corporate"
       }
      }
     },
     "localname": "CorporateDebtSecuritiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CostOfGoodsAndServicesSoldOverhead": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails": {
       "order": 7.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indirect cost incurred related to good produced and service rendered.",
        "label": "Cost, Overhead",
        "terseLabel": "Cost, Overhead"
       }
      }
     },
     "localname": "CostOfGoodsAndServicesSoldOverhead",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CostsAndExpensesRelatedParty": {
     "auth_ref": [
      "r80"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Costs of sales and operating expenses for the period incurred from transactions with related parties.",
        "label": "Costs and Expenses, Related Party",
        "terseLabel": "Costs and Expenses, Related Party"
       }
      }
     },
     "localname": "CostsAndExpensesRelatedParty",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CreditDefaultSwapBuyingProtectionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A type of swap transaction used as a credit derivative in which one party makes periodic payments to the other and receives the promise of a pay-off if a third party defaults.",
        "label": "Credit Default Swap, Buying Protection [Member]",
        "terseLabel": "Credit default swaps \u2014 purchased"
       }
      }
     },
     "localname": "CreditDefaultSwapBuyingProtectionMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CreditDefaultSwapMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A type of swap transaction used as a credit derivative in which one party makes periodic payments to the other and receives the promise of a pay-off if a third party defaults.",
        "label": "Credit Default Swap [Member]",
        "terseLabel": "Credit Default Swap"
       }
      }
     },
     "localname": "CreditDefaultSwapMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CreditDefaultSwapSellingProtectionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A type of swap transaction used as a credit derivative in which one party makes periodic payments to the other and receives the promise of a pay-off if a third party defaults.",
        "label": "Credit Default Swap, Selling Protection [Member]",
        "terseLabel": "Credit default swaps \u2014 written"
       }
      }
     },
     "localname": "CreditDefaultSwapSellingProtectionMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CreditDerivativeMaximumExposureUndiscounted": {
     "auth_ref": [
      "r392"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Maximum potential amount of future undiscounted payments that could be required under the credit derivative, before reduction for potential recoveries under recourse or collateralization provisions.",
        "label": "Credit Derivative, Maximum Exposure, Undiscounted",
        "verboseLabel": "Maximum Amount of Future Payments under Credit Default Swaps"
       }
      }
     },
     "localname": "CreditDerivativeMaximumExposureUndiscounted",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CreditDerivativesByContractTypeAxis": {
     "auth_ref": [
      "r390"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by major type of contract of credit derivatives.",
        "label": "Credit Derivatives Contract Type [Axis]",
        "terseLabel": "Credit Derivatives Contract Type [Axis]"
       }
      }
     },
     "localname": "CreditDerivativesByContractTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CreditDerivativesContractTypeDomain": {
     "auth_ref": [
      "r390"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents major types of credit derivative contracts.",
        "label": "Credit Derivatives Contract Type [Domain]",
        "terseLabel": "Credit Derivatives Contract Type [Domain]"
       }
      }
     },
     "localname": "CreditDerivativesContractTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CreditDerivativesLineItems": {
     "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": "Credit Derivatives [Line Items]",
        "terseLabel": "Credit Derivatives [Line Items]"
       }
      }
     },
     "localname": "CreditDerivativesLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails",
      "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CreditRiskContractMember": {
     "auth_ref": [
      "r285",
      "r383"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Derivative instrument whose primary underlying risk is tied to the creditworthiness or the credit spread of an entity.",
        "label": "Credit Risk Contract [Member]",
        "terseLabel": "Credit derivatives",
        "verboseLabel": "Credit"
       }
      }
     },
     "localname": "CreditRiskContractMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CreditRiskDerivativesAtFairValueNet": {
     "auth_ref": [
      "r393"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value of credit risk derivative asset after deduction of credit risk derivative liability.",
        "label": "Credit Risk Derivatives, at Fair Value, Net",
        "terseLabel": "Credit Risk Derivatives, at Fair Value, Net"
       }
      }
     },
     "localname": "CreditRiskDerivativesAtFairValueNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CurrencySwapMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Swap involving the exchange of principal and interest in one currency for another currency.",
        "label": "Currency Swap [Member]",
        "terseLabel": "Foreign currency swaps",
        "verboseLabel": "Foreign currency swaps"
       }
      }
     },
     "localname": "CurrencySwapMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CurrentFederalTaxExpenseBenefit": {
     "auth_ref": [
      "r120",
      "r324",
      "r328"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_CurrentIncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Current Federal Tax Expense (Benefit)",
        "verboseLabel": "Federal"
       }
      }
     },
     "localname": "CurrentFederalTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CurrentForeignTaxExpenseBenefit": {
     "auth_ref": [
      "r127",
      "r326"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_CurrentIncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Current Foreign Tax Expense (Benefit)",
        "verboseLabel": "Foreign"
       }
      }
     },
     "localname": "CurrentForeignTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CurrentIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r120",
      "r324",
      "r328"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.",
        "label": "Current Income Tax Expense (Benefit)",
        "totalLabel": "Subtotal"
       }
      }
     },
     "localname": "CurrentIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Current Income Tax Expense (Benefit), Continuing Operations [Abstract]",
        "verboseLabel": "Current:"
       }
      }
     },
     "localname": "CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CustodyFees": {
     "auth_ref": [
      "r81"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Those fees charged for services related to holding, advising, and managing customer investment assets. These account fees usually charged annually or semi-annually, on a per security basis, for the costs of services.",
        "label": "Custody Fees",
        "terseLabel": "Custody Fees"
       }
      }
     },
     "localname": "CustodyFees",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Debt Disclosure [Abstract]"
       }
      }
     },
     "localname": "DebtDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtDisclosureTextBlock": {
     "auth_ref": [
      "r270"
     ],
     "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": "Long-term Debt"
       }
      }
     },
     "localname": "DebtDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebt"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DebtInstrumentAxis": {
     "auth_ref": [
      "r7",
      "r9",
      "r10",
      "r485",
      "r488",
      "r530"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentDecreaseForgiveness": {
     "auth_ref": [
      "r126"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Decrease for amounts of indebtedness forgiven by the holder of the debt instrument.",
        "label": "Debt Instrument, Decrease, Forgiveness",
        "terseLabel": "Decrease in long-term debt due to debt forgiveness"
       }
      }
     },
     "localname": "DebtInstrumentDecreaseForgiveness",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentFaceAmount": {
     "auth_ref": [
      "r439",
      "r441"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Face (par) amount of debt instrument at time of issuance.",
        "label": "Debt Instrument, Face Amount",
        "terseLabel": "Debt instrument, face amount"
       }
      }
     },
     "localname": "DebtInstrumentFaceAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentIncreaseDecreaseOtherNet": {
     "auth_ref": [
      "r126"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in debt instruments, classified as other.",
        "label": "Debt Instrument, Increase (Decrease), Other, Net",
        "terseLabel": "Decrease in long-term debt due to exchange of debt for notes receivable due from a related party"
       }
      }
     },
     "localname": "DebtInstrumentIncreaseDecreaseOtherNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentInterestRateStatedPercentage": {
     "auth_ref": [
      "r27"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contractual interest rate for funds borrowed, under the debt agreement.",
        "label": "Debt Instrument, Interest Rate, Stated Percentage",
        "verboseLabel": "Debt instrument, stated interest rate"
       }
      }
     },
     "localname": "DebtInstrumentInterestRateStatedPercentage",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "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]"
       }
      }
     },
     "localname": "DebtInstrumentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentNameDomain": {
     "auth_ref": [
      "r28"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DebtInstrumentTable": {
     "auth_ref": [
      "r28",
      "r125",
      "r275",
      "r276",
      "r277",
      "r278",
      "r438",
      "r439",
      "r441",
      "r518"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtSecuritiesMember": {
     "auth_ref": [
      "r206"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt instrument issued by corporations, governments and governmental agencies, municipalities, and other institutions.",
        "label": "Debt Securities [Member]",
        "terseLabel": "Fixed maturity securities"
       }
      }
     },
     "localname": "DebtSecuritiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsPurchasedCreditImpairedInvestmentsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSalesOrDisposalsOfFixedMaturitySecuritiesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DeferredFederalIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r120",
      "r325",
      "r328"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_DeferredIncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred Federal Income Tax Expense (Benefit)",
        "verboseLabel": "Federal"
       }
      }
     },
     "localname": "DeferredFederalIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredForeignIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r120",
      "r325",
      "r328"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_DeferredIncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred Foreign Income Tax Expense (Benefit)",
        "verboseLabel": "Foreign"
       }
      }
     },
     "localname": "DeferredForeignIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxAssetsNet": {
     "auth_ref": [
      "r318"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.",
        "label": "Deferred Income Tax Assets, Net",
        "terseLabel": "Deferred Income Tax Assets, Net"
       }
      }
     },
     "localname": "DeferredIncomeTaxAssetsNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r107",
      "r120",
      "r325",
      "r328"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred Income Tax Expense (Benefit)",
        "totalLabel": "Subtotal"
       }
      }
     },
     "localname": "DeferredIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]",
        "verboseLabel": "Deferred:"
       }
      }
     },
     "localname": "DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DeferredIncomeTaxLiabilities": {
     "auth_ref": [
      "r12",
      "r13",
      "r316",
      "r487",
      "r529"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_DeferredTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences.",
        "label": "Deferred Tax Liabilities, Gross",
        "totalLabel": "Deferred Tax Liabilities, Gross"
       }
      }
     },
     "localname": "DeferredIncomeTaxLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxLiabilitiesNet": {
     "auth_ref": [
      "r301",
      "r318"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 7.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting.",
        "label": "Deferred Income Tax Liabilities, Net",
        "terseLabel": "Deferred Income Tax Liabilities, Net"
       }
      }
     },
     "localname": "DeferredIncomeTaxLiabilitiesNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense": {
     "auth_ref": [
      "r107",
      "r520",
      "r568",
      "r591",
      "r593",
      "r600",
      "r621"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense (reversal of expense) for deferred policy acquisition costs.",
        "label": "Deferred Policy Acquisition Costs, Amortization Expense",
        "negatedLabel": "Total amortization of DAC"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostAmortizationExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseNetInvestmentGainsLosses": {
     "auth_ref": [
      "r588",
      "r591"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense (reversal of amortization expense) of deferred policy acquisition costs from realized net investment gain (loss).",
        "label": "Deferred Policy Acquisition Cost, Amortization Expense, Net Investment Gains (Losses)",
        "negatedLabel": "Net investment gains (losses) of DAC and net derivative gains (losses) of DAC"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostAmortizationExpenseNetInvestmentGainsLosses",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCostAmortizationExpenseOther": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of other increase (decrease) to amortization expense of deferred policy acquisition cost (DAC).",
        "label": "Deferred Policy Acquisition Cost, Amortization Expense, Other",
        "negatedLabel": "Other expenses of DAC"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostAmortizationExpenseOther",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCostUnrealizedInvestmentGainLoss": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of unrealized investment gain (loss) which decreases (increases) deferred policy acquisition cost.",
        "label": "Deferred Policy Acquisition Cost, Unrealized Investment Gain (Loss)",
        "terseLabel": "Unrealized investment gains (losses) of DAC"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostUnrealizedInvestmentGainLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCosts": {
     "auth_ref": [
      "r545",
      "r593",
      "r594",
      "r600",
      "r621",
      "r663"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred policy acquisition cost capitalized on contract remaining in force.",
        "label": "Deferred Policy Acquisition Cost",
        "periodEndLabel": "Ending Balance of DAC",
        "periodStartLabel": "Beginning Balance of DAC",
        "terseLabel": "Deferred Policy Acquisition Cost"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCosts",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCostsAdditions": {
     "auth_ref": [
      "r593",
      "r600",
      "r621"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred policy acquisition cost capitalized.",
        "label": "Deferred Policy Acquisition Cost, Capitalization",
        "verboseLabel": "Capitalizations of DAC"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostsAdditions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Deferred Policy Acquisition Costs and Present Value of Future Profits [Abstract]",
        "terseLabel": "Amortization of deferred policy acquisition costs and value of business acquired"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1": {
     "auth_ref": [
      "r524",
      "r591"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "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 DAC and VOBA",
        "verboseLabel": "Direct amortization of deferred policy acquisition costs and value of business acquired"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired": {
     "auth_ref": [
      "r524",
      "r562",
      "r590"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 5.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after accumulated amortization, of 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, Net",
        "netLabel": "DAC and VOBA",
        "periodEndLabel": "Ending Balance of DAC and VOBA",
        "terseLabel": "Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Net",
        "verboseLabel": "Deferred policy acquisition costs and value of business acquired"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaBySegmentDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquiredAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Net [Abstract]"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquiredAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DeferredPolicyAcquisitionCostsTableTextBlock": {
     "auth_ref": [
      "r592",
      "r595",
      "r600",
      "r621"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the movement in deferred policy acquisition costs.",
        "label": "Deferred Policy Acquisition Costs [Table Text Block]",
        "terseLabel": "Deferred Policy Acquisition Costs"
       }
      }
     },
     "localname": "DeferredPolicyAcquisitionCostsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DeferredSalesInducementCostUnrealizedGainLossOnInvestment": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of unrealized investment gain (loss) which decreases (increases) deferred sales inducement cost.",
        "label": "Deferred Sales Inducement Cost, Unrealized Gain (Loss) on Investment",
        "terseLabel": "Unrealized investment gain (loss) of DSI"
       }
      }
     },
     "localname": "DeferredSalesInducementCostUnrealizedGainLossOnInvestment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDeferredSalesInducementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredSalesInducementsAdditions": {
     "auth_ref": [
      "r593",
      "r597",
      "r621"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred sale inducement cost capitalized.",
        "label": "Deferred Sale Inducement Cost, Capitalization",
        "verboseLabel": "Capitalization of DSI"
       }
      }
     },
     "localname": "DeferredSalesInducementsAdditions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDeferredSalesInducementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredSalesInducementsAmortizationExpense": {
     "auth_ref": [
      "r589",
      "r593",
      "r597",
      "r621"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense (reversal of expense) for deferred sales inducement cost.",
        "label": "Deferred Sales Inducement Cost, Amortization Expense",
        "negatedLabel": "Amortization of DSI"
       }
      }
     },
     "localname": "DeferredSalesInducementsAmortizationExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDeferredSalesInducementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredSalesInducementsNet": {
     "auth_ref": [
      "r589",
      "r593",
      "r598",
      "r621"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred sale inducement cost capitalized on contract remaining in force.",
        "label": "Deferred Sale Inducement Cost",
        "periodEndLabel": "Ending Balance of DSI",
        "periodStartLabel": "Beginning Balance of DSI"
       }
      }
     },
     "localname": "DeferredSalesInducementsNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDeferredSalesInducementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredSalesInducementsTableTextBlock": {
     "auth_ref": [
      "r595",
      "r599"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of deferred sale inducement cost.",
        "label": "Deferred Sale Inducement Cost [Table Text Block]",
        "verboseLabel": "Deferred Sales Inducements"
       }
      }
     },
     "localname": "DeferredSalesInducementsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.",
        "label": "Deferred Tax Assets, Goodwill and Intangible Assets",
        "terseLabel": "Intangibles"
       }
      }
     },
     "localname": "DeferredTaxAssetsGoodwillAndIntangibleAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsGross": {
     "auth_ref": [
      "r317"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_DeferredTaxLiabilities",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.",
        "label": "Deferred Tax Assets, Gross",
        "totalLabel": "Deferred Tax Assets, Gross"
       }
      }
     },
     "localname": "DeferredTaxAssetsGross",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsInvestments": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from investments (excludes investments in subsidiaries and equity method investments).",
        "label": "Deferred Tax Assets, Investments",
        "terseLabel": "Investments, including derivatives (1)"
       }
      }
     },
     "localname": "DeferredTaxAssetsInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsNetAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Deferred Tax Assets, Net [Abstract]",
        "verboseLabel": "Deferred income tax assets:"
       }
      }
     },
     "localname": "DeferredTaxAssetsNetAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DeferredTaxAssetsOperatingLossCarryforwards": {
     "auth_ref": [
      "r295",
      "r322",
      "r323"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.",
        "label": "Deferred Tax Assets, Operating Loss Carryforwards",
        "terseLabel": "Net operating loss carryforwards"
       }
      }
     },
     "localname": "DeferredTaxAssetsOperatingLossCarryforwards",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsOther": {
     "auth_ref": [
      "r296",
      "r322",
      "r323"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.",
        "label": "Deferred Tax Assets, Other",
        "verboseLabel": "Other"
       }
      }
     },
     "localname": "DeferredTaxAssetsOther",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits": {
     "auth_ref": [
      "r295",
      "r322",
      "r323"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from employee benefits, classified as other.",
        "label": "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits",
        "terseLabel": "Employee benefits"
       }
      }
     },
     "localname": "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilities": {
     "auth_ref": [
      "r301",
      "r318"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.",
        "label": "Deferred Tax Liabilities, Net",
        "negatedTotalLabel": "Net deferred income tax asset (liability)"
       }
      }
     },
     "localname": "DeferredTaxLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Deferred Tax Liabilities, Gross [Abstract]",
        "verboseLabel": "Deferred income tax liabilities:"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost": {
     "auth_ref": [
      "r296",
      "r322",
      "r323"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_DeferredIncomeTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount as of the balance sheet date of the estimated future tax effects attributable to policy acquisition costs being expensed for tax purposes but capitalized in conformity with generally accepted accounting principles, which will reverse in future periods when amortization of such capitalized costs cannot be deducted for tax purposes.",
        "label": "Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost",
        "verboseLabel": "DAC"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_DeferredIncomeTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from reserves and accruals.",
        "label": "Deferred Tax Liabilities, Deferred Expense, Reserves and Accruals",
        "terseLabel": "Policyholder liabilities and receivables (1)"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesNetAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Deferred Tax Liabilities, Net [Abstract]",
        "terseLabel": "Deferred tax assets and liabilities [Abstract]"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesNetAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesOther": {
     "auth_ref": [
      "r296",
      "r322",
      "r323"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_DeferredIncomeTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences classified as other.",
        "label": "Deferred Tax Liabilities, Other",
        "terseLabel": "Other"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesOther",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesOtherComprehensiveIncome": {
     "auth_ref": [
      "r296",
      "r322",
      "r323",
      "r329"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_DeferredIncomeTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains in other comprehensive income.",
        "label": "Deferred Tax Liabilities, Other Comprehensive Income",
        "verboseLabel": "Net unrealized investment gains"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesOtherComprehensiveIncome",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DepositAssets": {
     "auth_ref": [
      "r34"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralDetails": {
       "order": 1.0,
       "parentTag": "bhl_InvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateral",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement.",
        "label": "Deposit Assets",
        "verboseLabel": "Invested assets on deposit (regulatory deposits)"
       }
      }
     },
     "localname": "DepositAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DepositContractsAssets": {
     "auth_ref": [
      "r231"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying amount of assets as of the balance sheet date pertaining to amounts paid by the insured (including a ceding company) under insurance or reinsurance contracts for which insurance risk is not transferred.",
        "label": "Deposit Contracts, Assets",
        "terseLabel": "Deposit Contracts, Assets",
        "verboseLabel": "Deposit assets in premiums, reinsurance, and other receivables or secondary guarantee risk for reinsurance"
       }
      }
     },
     "localname": "DepositContractsAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DepositContractsLiabilities": {
     "auth_ref": [
      "r231"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying amount of liabilities as of the balance sheet date pertaining to amounts received by the insurer or reinsurer from the insured (including a ceding company) under insurance or reinsurance contracts for which insurance risk is not transferred.",
        "label": "Deposit Contracts, Liabilities",
        "terseLabel": "Deposit Contracts, Liabilities",
        "verboseLabel": "Deposit liabilities in other liabilities for reinsurance"
       }
      }
     },
     "localname": "DepositContractsLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset": {
     "auth_ref": [
      "r38",
      "r360"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.",
        "label": "Derivative Asset, Collateral, Obligation to Return Cash, Offset",
        "negatedTerseLabel": "Derivative Asset, Collateral, Obligation to Return Cash, Offset"
       }
      }
     },
     "localname": "DerivativeAssetCollateralObligationToReturnCashOffset",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection": {
     "auth_ref": [
      "r42",
      "r45"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value, after effects of master netting arrangements, deduction of assets not subject to a master netting arrangement and elected not to be offset, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, offset against an obligation to return collateral.",
        "label": "Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election",
        "terseLabel": "Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election"
       }
      }
     },
     "localname": "DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction": {
     "auth_ref": [
      "r41",
      "r45"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be offset, deducted from derivative assets.",
        "label": "Derivative Asset, Not Offset, Policy Election Deduction",
        "negatedTerseLabel": "Derivative Asset, Not Offset, Policy Election Deduction"
       }
      }
     },
     "localname": "DerivativeAssetNotOffsetPolicyElectionDeduction",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeAverageRemainingMaturity1": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Derivative, Average Remaining Maturity",
        "verboseLabel": "Weighted Average Years to Maturity (2)"
       }
      }
     },
     "localname": "DerivativeAverageRemainingMaturity1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "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 Type [Domain]",
        "verboseLabel": "Derivative Contract [Domain]"
       }
      }
     },
     "localname": "DerivativeContractTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DerivativeFairValueOfDerivativeAsset": {
     "auth_ref": [
      "r37",
      "r48",
      "r372",
      "r461"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.",
        "label": "Derivative Asset, Fair Value, Gross Asset",
        "terseLabel": "Derivative assets"
       }
      }
     },
     "localname": "DerivativeFairValueOfDerivativeAsset",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral": {
     "auth_ref": [
      "r39",
      "r44",
      "r49",
      "r399"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.",
        "label": "Derivative Asset, Fair Value, Amount Not Offset Against Collateral",
        "terseLabel": "Derivative Asset, Fair Value, Amount Not Offset Against Collateral"
       }
      }
     },
     "localname": "DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral": {
     "auth_ref": [
      "r42",
      "r45",
      "r398"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value, after effects of master netting arrangements, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset offset against an obligation to return collateral. Includes assets not subject to a master netting arrangement and not elected to be offset.",
        "label": "Derivative Asset, Fair Value, Amount Offset Against Collateral",
        "terseLabel": "Derivative Asset, Fair Value, Amount Offset Against Collateral"
       }
      }
     },
     "localname": "DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeFairValueOfDerivativeLiability": {
     "auth_ref": [
      "r37",
      "r48",
      "r372",
      "r461"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value, before effects of master netting arrangements, of a financial liability 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. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.",
        "label": "Derivative Liability, Fair Value, Gross Liability",
        "terseLabel": "Derivative liabilities"
       }
      }
     },
     "localname": "DerivativeFairValueOfDerivativeLiability",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral": {
     "auth_ref": [
      "r39",
      "r44",
      "r49",
      "r399"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value, after offset of derivative asset, of financial liability 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, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.",
        "label": "Derivative Liability, Fair Value, Amount Not Offset Against Collateral",
        "terseLabel": "Derivative Liability, Fair Value, Amount Not Offset Against Collateral"
       }
      }
     },
     "localname": "DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral": {
     "auth_ref": [
      "r42",
      "r45",
      "r398"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value, after effects of master netting arrangements, of financial liability 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 offset against the right to receive collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset.",
        "label": "Derivative Liability, Fair Value, Amount Offset Against Collateral",
        "terseLabel": "Derivative Liability, Fair Value, Amount Offset Against Collateral"
       }
      }
     },
     "localname": "DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeGainLossOnDerivativeNet": {
     "auth_ref": [
      "r371"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.",
        "label": "Derivative, Gain (Loss) on Derivative, Net",
        "terseLabel": "Derivative, Gain (Loss) on Derivative, Net"
       }
      }
     },
     "localname": "DerivativeGainLossOnDerivativeNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeInstrumentDetailAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Derivative Instrument Detail [Abstract]",
        "terseLabel": "Derivative Instrument Detail [Abstract]"
       }
      }
     },
     "localname": "DerivativeInstrumentDetailAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativeInstrumentRiskAxis": {
     "auth_ref": [
      "r370",
      "r374",
      "r378",
      "r385"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of derivative contract.",
        "label": "Derivative Instrument [Axis]",
        "terseLabel": "Derivative Instrument [Axis]",
        "verboseLabel": "Derivative Instrument Risk [Axis]"
       }
      }
     },
     "localname": "DerivativeInstrumentRiskAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Derivative Instruments and Hedging Activities Disclosure [Abstract]"
       }
      }
     },
     "localname": "DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock": {
     "auth_ref": [
      "r408"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.",
        "label": "Derivative Instruments and Hedging Activities Disclosure [Text Block]",
        "terseLabel": "Derivative Instruments and Hedging Activities Disclosure [Text Block]"
       }
      }
     },
     "localname": "DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/Derivatives"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis": {
     "auth_ref": [
      "r367",
      "r370",
      "r378"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of hedging relationship.",
        "label": "Hedging Relationship [Axis]",
        "terseLabel": "Hedging Relationship [Axis]"
       }
      }
     },
     "localname": "DerivativeInstrumentsGainLossByHedgingRelationshipAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable": {
     "auth_ref": [
      "r367",
      "r370",
      "r378",
      "r385",
      "r386",
      "r401",
      "r404"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.",
        "label": "Derivative Instruments, Gain (Loss) [Table]",
        "terseLabel": "Derivative Instruments, Gain (Loss) [Table]"
       }
      }
     },
     "localname": "DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativeInstrumentsGainLossLineItems": {
     "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": "Derivative Instruments, Gain (Loss) [Line Items]",
        "terseLabel": "Derivative Instruments, Gain (Loss) [Line Items]"
       }
      }
     },
     "localname": "DerivativeInstrumentsGainLossLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset": {
     "auth_ref": [
      "r38",
      "r360"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of right to receive cash collateral under master netting arrangements offset against derivative liabilities.",
        "label": "Derivative Liability, Collateral, Right to Reclaim Cash, Offset",
        "negatedTerseLabel": "Derivative Liability, Collateral, Right to Reclaim Cash, Offset"
       }
      }
     },
     "localname": "DerivativeLiabilityCollateralRightToReclaimCashOffset",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection": {
     "auth_ref": [
      "r42",
      "r45"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value, after effects of master netting arrangements, deduction of liabilities not subject to a master netting arrangement and elected not to be offset, of financial liability 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, offset against the right to receive collateral.",
        "label": "Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election",
        "terseLabel": "Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election"
       }
      }
     },
     "localname": "DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction": {
     "auth_ref": [
      "r41",
      "r45"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value of financial liability 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, elected not to be offset, deducted from derivative liabilities.",
        "label": "Derivative Liability, Not Offset, Policy Election Deduction",
        "negatedTerseLabel": "Derivative Liability, Not Offset, Policy Election Deduction"
       }
      }
     },
     "localname": "DerivativeLiabilityNotOffsetPolicyElectionDeduction",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeNetLiabilityPositionAggregateFairValue": {
     "auth_ref": [
      "r387"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.",
        "label": "Derivative, Net Liability Position, Aggregate Fair Value",
        "verboseLabel": "Estimated fair value of derivatives in a net liability position (1)"
       }
      }
     },
     "localname": "DerivativeNetLiabilityPositionAggregateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeNotionalAmount": {
     "auth_ref": [
      "r362",
      "r364"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Nominal or face amount used to calculate payment on derivative.",
        "label": "Derivative, Notional Amount",
        "terseLabel": "Derivative, Notional Amount"
       }
      }
     },
     "localname": "DerivativeNotionalAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeTable": {
     "auth_ref": [
      "r131",
      "r361",
      "r363",
      "r364",
      "r367",
      "r368",
      "r376",
      "r378",
      "r396",
      "r400",
      "r404"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule that describes and identifies a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.",
        "label": "Derivative [Table]",
        "terseLabel": "Derivative [Table]"
       }
      }
     },
     "localname": "DerivativeTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativesFairValueLineItems": {
     "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": "Derivatives, Fair Value [Line Items]",
        "terseLabel": "Derivatives, Fair Value [Line Items]"
       }
      }
     },
     "localname": "DerivativesFairValueLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativesPolicyTextBlock": {
     "auth_ref": [
      "r117",
      "r132",
      "r361",
      "r363",
      "r367",
      "r368",
      "r397"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for its derivative instruments and hedging activities.",
        "label": "Derivatives, Policy [Policy Text Block]",
        "terseLabel": "Derivatives, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "DerivativesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DescriptionOfRegulatoryCapitalRequirementsUnderInsuranceRegulations": {
     "auth_ref": [
      "r624"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "For insurance companies, a description of the minimum regulatory capital requirements imposed by state insurance regulators, and restrictions on dividend payments.",
        "label": "Description of Regulatory Capital Requirements under Insurance Regulations",
        "terseLabel": "RBC Adjusted Ratios"
       }
      }
     },
     "localname": "DescriptionOfRegulatoryCapitalRequirementsUnderInsuranceRegulations",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DesignatedAsHedgingInstrumentMember": {
     "auth_ref": [
      "r367"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Derivative instrument designated as hedging instrument under Generally Accepted Accounting Principles (GAAP).",
        "label": "Designated as Hedging Instrument [Member]",
        "terseLabel": "Derivatives Designated as Hedging Instruments"
       }
      }
     },
     "localname": "DesignatedAsHedgingInstrumentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DirectPremiumsEarned": {
     "auth_ref": [
      "r563",
      "r581",
      "r633",
      "r636"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_PremiumsEarnedNet",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums earned.",
        "label": "Direct Premiums Earned",
        "terseLabel": "Direct premiums"
       }
      }
     },
     "localname": "DirectPremiumsEarned",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DirectTaxesAndLicensesCosts": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of tax incurred and cost of license directly related to good produced or service rendered.",
        "label": "Cost, Direct Tax and License",
        "terseLabel": "Premium and other taxes, licenses and fees"
       }
      }
     },
     "localname": "DirectTaxesAndLicensesCosts",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DisabilityInsurancePolicyMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contract that provides a benefit in the event the policyholder is incapable of working.",
        "label": "Disability Insurance Policy [Member]",
        "terseLabel": "Disability Insurance Policy [Member]"
       }
      }
     },
     "localname": "DisabilityInsurancePolicyMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DisclosureOfCreditDerivativesTextBlock": {
     "auth_ref": [
      "r389",
      "r394",
      "r395"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of credit derivatives which includes information by sellers of credit derivatives, about each credit derivative, or each group of similar credit derivatives, including (a) the nature of the credit derivative - its term, how it arose, the events or circumstances that would require the seller to perform under the credit derivative, and the current status of the payment/performance risk of the credit derivative; (b) the maximum potential amount of future payments (undiscounted) the seller could be required to make under the credit derivative; (c) the current fair value of the credit derivative; and (d) the nature of any recourse provisions under the credit derivative, and any assets held either as collateral or by third parties. A credit derivative is a derivative instrument (1) in which one or more of its underlyings are related to the credit risk of a specified entity (or a group of entities) or an index based on the credit risk of a group of entities and (2) that exposes the seller to potential loss from credit-risk-related events specified in the contract. Examples of credit derivatives within the scope of this paragraph include, but are not limited to, credit default swaps, credit spread options, and credit index products; also includes a hybrid instrument that has an embedded credit derivative (for example, but not limited to, a credit-linked note).",
        "label": "Disclosure of Credit Derivatives [Table Text Block]",
        "verboseLabel": "Schedule of estimated fair value, maximum amount of future payments and weighted average years to maturity of written credit default swaps"
       }
      }
     },
     "localname": "DisclosureOfCreditDerivativesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DistributionRightsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Legal rights, generally of a limited duration, to distribute a product or products, often within specific geographic areas or supply channels.",
        "label": "Distribution Rights [Member]",
        "terseLabel": "Distribution Rights [Member]"
       }
      }
     },
     "localname": "DistributionRightsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DistributionServiceMember": {
     "auth_ref": [
      "r283"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Distribution assistance, including, but not limited to, marketing and selling fund shares, advertising, printing and mailing of prospectus and sale literature to investor.",
        "label": "Distribution Service [Member]",
        "terseLabel": "Distribution Service [Member]"
       }
      }
     },
     "localname": "DistributionServiceMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherRevenuesNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_Dividends": {
     "auth_ref": [
      "r279",
      "r516"
     ],
     "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",
        "terseLabel": "Dividends"
       }
      }
     },
     "localname": "Dividends",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DividendsCommonStockCash": {
     "auth_ref": [
      "r279"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.",
        "label": "Dividends, Common Stock, Cash",
        "terseLabel": "Cash dividends declared"
       }
      }
     },
     "localname": "DividendsCommonStockCash",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DividendsCommonStockPaidinkind": {
     "auth_ref": [
      "r279"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of paid and unpaid common stock dividends declared with the form of settlement in payment-in-kind (PIK).",
        "label": "Dividends, Common Stock, Paid-in-kind",
        "terseLabel": "Noncash dividends declared by subsidiaries"
       }
      }
     },
     "localname": "DividendsCommonStockPaidinkind",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyInvestmentInSubsidiariesFootnoteDetails",
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DividendsPayableLineItems": {
     "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": "Dividends Payable [Line Items]",
        "terseLabel": "Dividends Payable [Line Items]"
       }
      }
     },
     "localname": "DividendsPayableLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DividendsPayableTable": {
     "auth_ref": [
      "r113"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A table that contains information regarding dividends that have been declared but not paid as of the financial reporting date. This information may contain the amount, amount per share, declared date, and date to be paid.",
        "label": "Dividends Payable [Table]",
        "terseLabel": "Dividends Payable [Table]"
       }
      }
     },
     "localname": "DividendsPayableTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DomesticCorporateDebtSecuritiesMember": {
     "auth_ref": [
      "r188",
      "r285",
      "r289"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt security issued by corporation domiciled in United States of America (US).",
        "label": "Debt Security, Corporate, US [Member]",
        "verboseLabel": "U.S. corporate"
       }
      }
     },
     "localname": "DomesticCorporateDebtSecuritiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DueFromAffiliates": {
     "auth_ref": [
      "r128",
      "r443",
      "r445",
      "r447",
      "r560"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.",
        "label": "Due from Affiliates",
        "terseLabel": "Due from Affiliates"
       }
      }
     },
     "localname": "DueFromAffiliates",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DueFromRelatedParties": {
     "auth_ref": [
      "r128",
      "r443",
      "r496",
      "r560"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.",
        "label": "Due from Related Parties",
        "terseLabel": "Due from Related Parties"
       }
      }
     },
     "localname": "DueFromRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails",
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DueToRelatedPartiesCurrentAndNoncurrent": {
     "auth_ref": [
      "r128",
      "r443",
      "r497",
      "r558"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying amount as of the balance sheet date of obligations due all related parties.",
        "label": "Due to Related Parties",
        "negatedTerseLabel": "Due to Related Parties"
       }
      }
     },
     "localname": "DueToRelatedPartiesCurrentAndNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": {
     "auth_ref": [
      "r302",
      "r303",
      "r327"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).",
        "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent",
        "terseLabel": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent"
       }
      }
     },
     "localname": "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_EffectsOfReinsuranceLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Effects of Reinsurance [Line Items]",
        "terseLabel": "Effects of Reinsurance [Line Items]"
       }
      }
     },
     "localname": "EffectsOfReinsuranceLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_EffectsOfReinsuranceTable": {
     "auth_ref": [
      "r639"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about the effects of reinsurance, including, but not limited to, disclosure of direct, assumed, and ceded insurance.",
        "label": "Effects of Reinsurance [Table]",
        "terseLabel": "Other Expenses"
       }
      }
     },
     "localname": "EffectsOfReinsuranceTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_EffectsOfReinsuranceTableTextBlock": {
     "auth_ref": [
      "r639"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the effects of reinsurance, for example, but not limited to, disclosure of direct, assumed, and ceded insurance.",
        "label": "Effects of Reinsurance [Table Text Block]",
        "verboseLabel": "Effects of reinsurance"
       }
      }
     },
     "localname": "EffectsOfReinsuranceTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_EffectsOfUnrealizedHoldingGainLossOnPresentValueOfFutureInsuranceProfits1": {
     "auth_ref": [
      "r205"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of adjustment to reflect the effect that would have been recognized had the unrealized holding gain (loss) actually been realized on the present value of future insurance profits being amortized using the gross profit method and the present value of future profits recognized as a result of a purchase of an insurance entity holding long-duration contracts.",
        "label": "Effects of Unrealized Holding Gain (Loss) on Present Value of Future Insurance Profits",
        "verboseLabel": "Unrealized investment gains (losses) of VOBA"
       }
      }
     },
     "localname": "EffectsOfUnrealizedHoldingGainLossOnPresentValueOfFutureInsuranceProfits1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeAsset": {
     "auth_ref": [
      "r373"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as an asset.",
        "label": "Embedded Derivative, Fair Value of Embedded Derivative Asset",
        "terseLabel": "Embedded Derivative, Fair Value of Embedded Derivative Asset",
        "verboseLabel": "Net embedded derivatives within asset host contracts"
       }
      }
     },
     "localname": "EmbeddedDerivativeFairValueOfEmbeddedDerivativeAsset",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability": {
     "auth_ref": [
      "r373"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.",
        "label": "Embedded Derivative, Fair Value of Embedded Derivative Liability",
        "terseLabel": "Embedded Derivative, Fair Value of Embedded Derivative Liability",
        "verboseLabel": "Net embedded derivatives within liability host contracts"
       }
      }
     },
     "localname": "EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmbeddedDerivativeFinancialInstrumentsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Derivative instrument embedded in host contract.",
        "label": "Embedded Derivative Financial Instruments [Member]",
        "terseLabel": "Embedded Derivative Financial Instruments [Member]",
        "verboseLabel": "Net Embedded Derivatives"
       }
      }
     },
     "localname": "EmbeddedDerivativeFinancialInstrumentsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet": {
     "auth_ref": [
      "r402"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.",
        "label": "Embedded Derivative, Gain (Loss) on Embedded Derivative, Net",
        "terseLabel": "Net derivatives gains (losses)"
       }
      }
     },
     "localname": "EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmbeddedDerivativeLiabilityMeasurementInput": {
     "auth_ref": [
      "r414"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Value of input used to measure embedded derivative liability.",
        "label": "Embedded Derivative Liability, Measurement Input",
        "terseLabel": "Embedded Derivative Liability, Measurement Input"
       }
      }
     },
     "localname": "EmbeddedDerivativeLiabilityMeasurementInput",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "decimalItemType"
    },
    "us-gaap_EquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Equity [Abstract]"
       }
      }
     },
     "localname": "EquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_EquityComponentDomain": {
     "auth_ref": [
      "r274"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EquityContractMember": {
     "auth_ref": [
      "r285",
      "r382"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Derivative instrument whose primary underlying risk is tied to share prices.",
        "label": "Equity Contract [Member]",
        "terseLabel": "Equity derivatives",
        "verboseLabel": "Equity market"
       }
      }
     },
     "localname": "EquityContractMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EquityFundsMember": {
     "auth_ref": [
      "r285"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "An investment that pools funds from many investors to invest in a combination of underlying investments, primarily equity investments.",
        "label": "Equity Funds [Member]",
        "verboseLabel": "Equity"
       }
      }
     },
     "localname": "EquityFundsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets": {
     "auth_ref": [
      "r1",
      "r118",
      "r209",
      "r211",
      "r432"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of assets reported by an equity method investment of the entity.",
        "label": "Equity Method Investment, Summarized Financial Information, Assets",
        "verboseLabel": "Total assets for investments accounted for under the equity method"
       }
      }
     },
     "localname": "EquityMethodInvestmentSummarizedFinancialInformationAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCollectivelySignificantEquityMethodInvestmentsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities": {
     "auth_ref": [
      "r1",
      "r118",
      "r209",
      "r211",
      "r432"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of liabilities reported by an equity method investment of the entity.",
        "label": "Equity Method Investment, Summarized Financial Information, Liabilities",
        "verboseLabel": "Total liabilities for investments accounted for under the equity method"
       }
      }
     },
     "localname": "EquityMethodInvestmentSummarizedFinancialInformationLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCollectivelySignificantEquityMethodInvestmentsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss": {
     "auth_ref": [
      "r1",
      "r118",
      "r209",
      "r211",
      "r432"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of net income (loss) reported by an equity method investment of the entity.",
        "label": "Equity Method Investment, Summarized Financial Information, Net Income (Loss)",
        "verboseLabel": "Net income (loss) for investments accounted for under the equity method"
       }
      }
     },
     "localname": "EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCollectivelySignificantEquityMethodInvestmentsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquityMethodInvestments": {
     "auth_ref": [
      "r24",
      "r164",
      "r207"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.",
        "label": "Equity Method Investments",
        "terseLabel": "Carrying value of equity method investments sold",
        "verboseLabel": "Carrying value of investments accounted for under the equity method"
       }
      }
     },
     "localname": "EquityMethodInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCollectivelySignificantEquityMethodInvestmentsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquitySecuritiesInvestmentSummaryMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This element provides types of investments that may be contained within the equity securities category. Examples of items within this category may include common stocks and nonredeemable preferred stocks which may, at a minimum, be further categorized by investments in companies within the following industries: (1) public utilities; (2) banks, trust and insurance companies; (3) industrial, miscellaneous and all other.",
        "label": "Equity Securities, Investment Summary [Member]",
        "terseLabel": "Total equity securities"
       }
      }
     },
     "localname": "EquitySecuritiesInvestmentSummaryMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EquitySecuritiesMember": {
     "auth_ref": [
      "r5",
      "r8",
      "r206",
      "r494",
      "r531",
      "r679"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EstimateOfFairValueFairValueDisclosureMember": {
     "auth_ref": [
      "r429"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measured as an estimate of fair value.",
        "label": "Estimate of Fair Value Measurement [Member]",
        "terseLabel": "Estimated Fair Value"
       }
      }
     },
     "localname": "EstimateOfFairValueFairValueDisclosureMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsNetOfInterestAccruedAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Present Value of Future Insurance Profits, Amortization Expense, Next Five Years [Abstract]",
        "verboseLabel": "Estimated future amortization expense allocated to other expenses for VOBA [Abstract]"
       }
      }
     },
     "localname": "ExpectedAmortizationExpenseOfEndingPresentValueOfFutureInsuranceProfitsNetOfInterestAccruedAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": {
     "auth_ref": [
      "r409",
      "r410",
      "r411",
      "r423"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about asset and liability measured at fair value on recurring and nonrecurring basis.",
        "label": "Fair Value, Recurring and Nonrecurring [Table]"
       }
      }
     },
     "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable": {
     "auth_ref": [
      "r412"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.",
        "label": "Fair Value Measurement Inputs and Valuation Techniques [Table]",
        "terseLabel": "Fair Value Measurement Inputs and Valuation Techniques [Table]"
       }
      }
     },
     "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock": {
     "auth_ref": [
      "r412"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.",
        "label": "Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]",
        "verboseLabel": "Fair Value Inputs, Quantitative Information"
       }
      }
     },
     "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]"
       }
      }
     },
     "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss": {
     "auth_ref": [
      "r420"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held.",
        "label": "Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss)",
        "terseLabel": "Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period"
       }
      }
     },
     "localname": "FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain": {
     "auth_ref": [
      "r415"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Class of asset.",
        "label": "Asset Class [Domain]",
        "terseLabel": "Asset Class [Domain]"
       }
      }
     },
     "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]"
       }
      }
     },
     "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]",
        "terseLabel": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]"
       }
      }
     },
     "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable": {
     "auth_ref": [
      "r415",
      "r423"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule of information required and determined to be provided for purposes of reconciling beginning and ending balances of fair value measurements of assets using significant unobservable inputs (level 3). Such reconciliation, separately presenting changes during the period, at a minimum, may include, but is not limited to: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.",
        "label": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]",
        "terseLabel": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]"
       }
      }
     },
     "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock": {
     "auth_ref": [
      "r415",
      "r423"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.",
        "label": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]",
        "terseLabel": "Fair Value, Measured on Recurring Basis, Unobservable Input Reconciliation"
       }
      }
     },
     "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]",
        "terseLabel": "Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]"
       }
      }
     },
     "localname": "FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsOtherInvestedAssetsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueByAssetClassAxis": {
     "auth_ref": [
      "r409",
      "r423"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueByBalanceSheetGroupingTable": {
     "auth_ref": [
      "r409",
      "r430",
      "r431"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsOtherInvestedAssetsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueByBalanceSheetGroupingTextBlock": {
     "auth_ref": [
      "r409",
      "r430"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of 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 Text Block]",
        "verboseLabel": "Fair Value of Financial Instruments Carried at Other Than Fair Value"
       }
      }
     },
     "localname": "FairValueByBalanceSheetGroupingTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FairValueByFairValueHierarchyLevelAxis": {
     "auth_ref": [
      "r285",
      "r286",
      "r289",
      "r410",
      "r457"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails",
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueByMeasurementBasisAxis": {
     "auth_ref": [
      "r409",
      "r424"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by measurement basis.",
        "label": "Measurement Basis [Axis]"
       }
      }
     },
     "localname": "FairValueByMeasurementBasisAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueByMeasurementFrequencyAxis": {
     "auth_ref": [
      "r409",
      "r410",
      "r413",
      "r414",
      "r425"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by measurement frequency.",
        "label": "Measurement Frequency [Axis]"
       }
      }
     },
     "localname": "FairValueByMeasurementFrequencyAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.",
        "label": "Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability",
        "terseLabel": "Off-balance sheet commitments"
       }
      }
     },
     "localname": "FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesCommitmentsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueDisclosuresAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Fair Value Disclosures [Abstract]"
       }
      }
     },
     "localname": "FairValueDisclosuresAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueDisclosuresTextBlock": {
     "auth_ref": [
      "r421"
     ],
     "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]",
        "verboseLabel": "Fair Value"
       }
      }
     },
     "localname": "FairValueDisclosuresTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValue"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FairValueHedgingMember": {
     "auth_ref": [
      "r365"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A hedge of the exposure to changes in the fair value of a recognized asset or liability, or of an unrecognized firm commitment, that are attributable to a particular risk.",
        "label": "Fair Value Hedging [Member]",
        "verboseLabel": "Fair Value Hedges"
       }
      }
     },
     "localname": "FairValueHedgingMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueInputsLevel1Member": {
     "auth_ref": [
      "r285",
      "r286",
      "r289",
      "r410",
      "r458"
     ],
     "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]",
        "verboseLabel": "Level 1"
       }
      }
     },
     "localname": "FairValueInputsLevel1Member",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueInputsLevel2Member": {
     "auth_ref": [
      "r285",
      "r286",
      "r289",
      "r410",
      "r459"
     ],
     "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]",
        "verboseLabel": "Level 2"
       }
      }
     },
     "localname": "FairValueInputsLevel2Member",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueInputsLevel3Member": {
     "auth_ref": [
      "r285",
      "r286",
      "r289",
      "r410",
      "r460"
     ],
     "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": "Fair Value, Inputs, Level 3 [Member]",
        "verboseLabel": "Level 3"
       }
      }
     },
     "localname": "FairValueInputsLevel3Member",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails",
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueMeasurementFrequencyDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement frequency.",
        "label": "Measurement Frequency [Domain]",
        "terseLabel": "Measurement Frequency [Domain]"
       }
      }
     },
     "localname": "FairValueMeasurementFrequencyDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1": {
     "auth_ref": [
      "r416"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).",
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings",
        "verboseLabel": "Total realized/unrealized gains (losses) included in net income (loss)"
       }
      }
     },
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss": {
     "auth_ref": [
      "r417"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3).",
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)",
        "verboseLabel": "Total realized/unrealized gains (losses) included in AOCI"
       }
      }
     },
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssues": {
     "auth_ref": [
      "r418"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of issuances 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, Issuances",
        "verboseLabel": "Issuances"
       }
      }
     },
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssues",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases": {
     "auth_ref": [
      "r418"
     ],
     "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",
        "verboseLabel": "Purchases"
       }
      }
     },
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales": {
     "auth_ref": [
      "r418"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.",
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales",
        "negatedLabel": "Sales"
       }
      }
     },
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements": {
     "auth_ref": [
      "r418"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of settlement 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, Settlements",
        "negatedLabel": "Settlements"
       }
      }
     },
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3": {
     "auth_ref": [
      "r419"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.",
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3",
        "verboseLabel": "Transfers into Level 3"
       }
      }
     },
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3": {
     "auth_ref": [
      "r419"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.",
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3",
        "negatedLabel": "Transfers out of Level 3"
       }
      }
     },
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue": {
     "auth_ref": [
      "r415"
     ],
     "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 at December 31,",
        "periodStartLabel": "Balance at January 1,"
       }
      }
     },
     "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails",
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueMeasurementsRecurringMember": {
     "auth_ref": [
      "r421",
      "r425"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Frequent fair value measurement. Includes, but is not limited to, fair value adjustment for impairment of asset, liability or equity, frequently measured at fair value.",
        "label": "Fair Value, Recurring [Member]",
        "verboseLabel": "Recurring"
       }
      }
     },
     "localname": "FairValueMeasurementsRecurringMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss": {
     "auth_ref": [
      "r420"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of unrealized gain (loss) recognized in income for derivative asset (liability) after deduction of derivative liability (asset), measured at fair value using unobservable input (level 3) and still held.",
        "label": "Fair Value, Net Derivative Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss)",
        "terseLabel": "Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]",
        "terseLabel": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings": {
     "auth_ref": [
      "r416",
      "r422"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3).",
        "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings",
        "terseLabel": "Total realized/unrealized gains (losses) included in net income (loss)"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss": {
     "auth_ref": [
      "r417",
      "r422"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of gain (loss) recognized in other comprehensive income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3).",
        "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)",
        "terseLabel": "Total realized/unrealized gains (losses) included in AOCI"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationIssues": {
     "auth_ref": [
      "r418",
      "r422"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of issuances of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using 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 Inputs Reconciliation, Issues",
        "terseLabel": "Issuances"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationIssues",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases": {
     "auth_ref": [
      "r418",
      "r422"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of purchases of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using 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 Inputs Reconciliation, Purchases",
        "terseLabel": "Purchases"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSales": {
     "auth_ref": [
      "r418",
      "r422"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of sales of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using 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 Inputs Reconciliation, Sales",
        "negatedLabel": "Sales"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSales",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements": {
     "auth_ref": [
      "r418",
      "r422"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of settlements of financial instrument classified as a derivative asset (liability) after deduction of derivative liability, measured using 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 Inputs Reconciliation, Settlements",
        "negatedLabel": "Settlements"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3": {
     "auth_ref": [
      "r419",
      "r422"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into level 3 of the fair value hierarchy.",
        "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3",
        "terseLabel": "Transfers into Level 3"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3": {
     "auth_ref": [
      "r419",
      "r422"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of transfers of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset) out of level 3 of the fair value hierarchy.",
        "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3",
        "negatedLabel": "Transfers out of Level 3"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs": {
     "auth_ref": [
      "r409",
      "r422"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using 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 with Unobservable Inputs",
        "periodEndLabel": "Balance at December 31,",
        "periodStartLabel": "Balance at January 1,"
       }
      }
     },
     "localname": "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FairValueOfFinancialInstrumentsPolicy": {
     "auth_ref": [
      "r117",
      "r426",
      "r428"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for determining the fair value of financial instruments.",
        "label": "Fair Value of Financial Instruments, Policy [Policy Text Block]",
        "terseLabel": "Fair Value of Financial Instruments, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "FairValueOfFinancialInstrumentsPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems": {
     "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, Off-balance Sheet Risks, Disclosure Information [Line Items]"
       }
      }
     },
     "localname": "FairValueOffBalanceSheetRisksDisclosureInformationLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesCommitmentsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueOptionQuantitativeDisclosuresLineItems": {
     "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, Option, Quantitative Disclosures [Line Items]",
        "terseLabel": "Fair Value, Option, Quantitative Disclosures [Line Items]"
       }
      }
     },
     "localname": "FairValueOptionQuantitativeDisclosuresLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch": {
     "auth_ref": [
      "r517"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of advances from the Federal Home Loan Bank (FHLB).",
        "label": "Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances",
        "terseLabel": "Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances"
       }
      }
     },
     "localname": "FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FederalHomeLoanBankStock": {
     "auth_ref": [
      "r515"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).",
        "label": "Federal Home Loan Bank Stock",
        "terseLabel": "Federal Home Loan Bank Stock"
       }
      }
     },
     "localname": "FederalHomeLoanBankStock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinancialInstrumentAxis": {
     "auth_ref": [
      "r213",
      "r214",
      "r215",
      "r216",
      "r218",
      "r227",
      "r228",
      "r229",
      "r230"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesCommitmentsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsPurchasedCreditImpairedInvestmentsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSalesOrDisposalsOfFixedMaturitySecuritiesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FinancialInstrumentPerformanceStatusAxis": {
     "auth_ref": [
      "r218"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by category of performance or non-performance status of financial instruments.",
        "label": "Financial Instrument Performance Status [Axis]",
        "terseLabel": "Financial Instrument Performance Status [Axis]"
       }
      }
     },
     "localname": "FinancialInstrumentPerformanceStatusAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FinancialInstrumentPerformanceStatusDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Category of performance or non-performance status of financial instruments, including but not limited to, financing receivables, loans, debt, and investments.",
        "label": "Financial Instrument Performance Status [Domain]",
        "terseLabel": "Financial Instrument Performance Status [Domain]"
       }
      }
     },
     "localname": "FinancialInstrumentPerformanceStatusDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]",
        "verboseLabel": "Assets"
       }
      }
     },
     "localname": "FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]",
        "verboseLabel": "Liabilities"
       }
      }
     },
     "localname": "FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock": {
     "auth_ref": [
      "r176",
      "r218"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics.",
        "label": "Financing Receivable Credit Quality Indicators [Table Text Block]",
        "verboseLabel": "Credit Quality of Mortgage Loans by Portfolio Segment"
       }
      }
     },
     "localname": "FinancingReceivableCreditQualityIndicatorsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FinancingReceivablePortfolioSegmentAxis": {
     "auth_ref": [
      "r213",
      "r214",
      "r219"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by the level at which an entity develops and documents a systematic methodology to determine its allowance for credit losses.",
        "label": "Financing Receivable Portfolio Segment [Axis]",
        "terseLabel": "Financing Receivable Portfolio Segment [Axis]"
       }
      }
     },
     "localname": "FinancingReceivablePortfolioSegmentAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FinancingReceivablePortfolioSegmentDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Level at which an entity develops and documents a systematic methodology to determine its allowance for credit losses.",
        "label": "Financing Receivable Portfolio Segment [Domain]",
        "terseLabel": "Financing Receivable Portfolio Segment [Domain]"
       }
      }
     },
     "localname": "FinancingReceivablePortfolioSegmentDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis": {
     "auth_ref": [
      "r177",
      "r179",
      "r180",
      "r215",
      "r216",
      "r218",
      "r220",
      "r221",
      "r224",
      "r225"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by class of financing receivable determined on the basis of initial measurement attribute, risk characteristics and method of monitoring and assessing credit risk.",
        "label": "Class of Financing Receivable [Axis]",
        "terseLabel": "Class of Financing Receivable [Axis]"
       }
      }
     },
     "localname": "FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Financing receivables determined on the basis of initial measurement attribute, risk characteristics and method of monitoring and assessing credit risk.",
        "label": "Class of Financing Receivable [Domain]",
        "terseLabel": "Class of Financing Receivable [Domain]"
       }
      }
     },
     "localname": "FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FinancingReceivableRecordedInvestmentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Financing Receivable, Credit Quality Indicator [Line Items]",
        "terseLabel": "Financing Receivable, Credit Quality Indicator [Line Items]"
       }
      }
     },
     "localname": "FinancingReceivableRecordedInvestmentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FinancingReceivableRecordedInvestmentPastDue": {
     "auth_ref": [
      "r180",
      "r215",
      "r225"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of financing receivable past due.",
        "label": "Financing Receivable, Past Due",
        "terseLabel": "Recorded Investment of Loans Past Due"
       }
      }
     },
     "localname": "FinancingReceivableRecordedInvestmentPastDue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems": {
     "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, Past Due [Line Items]",
        "terseLabel": "Financing Receivable, Past Due [Line Items]"
       }
      }
     },
     "localname": "FinancingReceivableRecordedInvestmentPastDueLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FinancingReceivableSignificantPurchases": {
     "auth_ref": [
      "r175",
      "r212"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase from purchase of financing receivable.",
        "label": "Financing Receivable, Purchase",
        "terseLabel": "Significant Purchases"
       }
      }
     },
     "localname": "FinancingReceivableSignificantPurchases",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "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": "Finite-Lived Intangible Asset, Useful Life"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetUsefulLife",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization": {
     "auth_ref": [
      "r237"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "label": "Finite-Lived Intangible Assets, Accumulated Amortization",
        "periodEndLabel": "Accumulated amortization of VODA"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAccumulatedAmortization",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDeferredSalesInducementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths": {
     "auth_ref": [
      "r239"
     ],
     "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",
        "verboseLabel": "VODA 2020"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive": {
     "auth_ref": [
      "r239"
     ],
     "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",
        "verboseLabel": "VODA 2024"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour": {
     "auth_ref": [
      "r239"
     ],
     "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",
        "verboseLabel": "VODA 2023"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFour",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree": {
     "auth_ref": [
      "r239"
     ],
     "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",
        "verboseLabel": "VODA 2022"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearThree",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo": {
     "auth_ref": [
      "r239"
     ],
     "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",
        "verboseLabel": "VODA 2021"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis": {
     "auth_ref": [
      "r234",
      "r235",
      "r237",
      "r240",
      "r468"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]",
        "verboseLabel": "Value of Distribution Agreements and Customer Relationships Acquired [Abstract]"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain": {
     "auth_ref": [
      "r234",
      "r236"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsNet": {
     "auth_ref": [
      "r237"
     ],
     "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",
        "periodEndLabel": "Ending Balance of VODA",
        "periodStartLabel": "Beginning Balance of VODA"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDeferredSalesInducementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FixedAnnuityMember": {
     "auth_ref": [
      "r618"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contract that provides a guaranteed stream of fixed payments.",
        "label": "Fixed Annuity [Member]",
        "terseLabel": "Fixed Annuity [Member]"
       }
      }
     },
     "localname": "FixedAnnuityMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FixedMaturitiesMember": {
     "auth_ref": [
      "r655"
     ],
     "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",
        "verboseLabel": "Total fixed maturity securities"
       }
      }
     },
     "localname": "FixedMaturitiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ForeignCorporateDebtSecuritiesMember": {
     "auth_ref": [
      "r188",
      "r285"
     ],
     "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]",
        "verboseLabel": "Foreign corporate"
       }
      }
     },
     "localname": "ForeignCorporateDebtSecuritiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ForeignCountryMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Designated tax departments of governments entitled to levy and collect income taxes from the entity outside the entity's country of domicile.",
        "label": "Foreign Tax Authority [Member]",
        "terseLabel": "Foreign Tax Authority"
       }
      }
     },
     "localname": "ForeignCountryMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ForeignExchangeContractMember": {
     "auth_ref": [
      "r285",
      "r381"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Derivative instrument whose primary underlying risk is tied to foreign exchange rates.",
        "label": "Foreign Exchange Contract [Member]",
        "terseLabel": "Foreign currency exchange rate derivatives",
        "verboseLabel": "Foreign currency exchange rate"
       }
      }
     },
     "localname": "ForeignExchangeContractMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ForeignExchangeForwardMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Foreign exchange forward traded on an exchange (examples include but are not limited to the International Securities Exchange, Philadelphia Stock Exchange, or the Chicago Mercantile Exchange) for options or future contracts to buy or sell a certain currency, at a specified date, at a fixed exercise exchange rate.",
        "label": "Foreign Exchange Forward [Member]",
        "terseLabel": "Foreign currency forwards"
       }
      }
     },
     "localname": "ForeignExchangeForwardMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ForeignGovernmentDebtSecuritiesMember": {
     "auth_ref": [
      "r285",
      "r654"
     ],
     "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]",
        "verboseLabel": "Foreign government"
       }
      }
     },
     "localname": "ForeignGovernmentDebtSecuritiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ForwardContractsMember": {
     "auth_ref": [
      "r379"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contracts negotiated between two parties to purchase and sell a specific quantity of a financial instrument, foreign currency, or commodity at a price specified at origination of the contract, with delivery and settlement at a specified future date.",
        "label": "Forward Contracts [Member]",
        "verboseLabel": "Interest rate forwards"
       }
      }
     },
     "localname": "ForwardContractsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FuturePolicyBenefitsLiabilityPolicy": {
     "auth_ref": [
      "r528",
      "r608",
      "r611"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for liability for future benefit to be paid to or on behalf of policyholder. Includes, but is not limited to, input, judgment, assumption, and method used in measuring liability and change in input, judgment, and assumption.",
        "label": "Liability for Future Policy Benefit [Policy Text Block]",
        "terseLabel": "Future Policy Benefit Liability, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "FuturePolicyBenefitsLiabilityPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_GainLossOnDerivativeInstrumentsNetPretax": {
     "auth_ref": [
      "r370"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_Revenues",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.",
        "label": "Gain (Loss) on Derivative Instruments, Net, Pretax",
        "verboseLabel": "Net derivative gains (losses)"
       }
      }
     },
     "localname": "GainLossOnDerivativeInstrumentsNetPretax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GainLossOnInvestments": {
     "auth_ref": [
      "r84",
      "r107",
      "r187"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      },
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_Revenues",
       "weight": 1.0
      },
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails": {
       "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",
        "negatedLabel": "(Gains) losses on investments, net",
        "terseLabel": "Net investment gains (losses)",
        "totalLabel": "Net investment gains (losses)",
        "verboseLabel": "Net investment gains (losses)"
       }
      }
     },
     "localname": "GainLossOnInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GainLossOnInvestmentsTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of realized and unrealized gain (loss) on investment in security.",
        "label": "Gain (Loss) on Securities [Table Text Block]",
        "verboseLabel": "Components of Net Investment Gains (Losses)"
       }
      }
     },
     "localname": "GainLossOnInvestmentsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_GainLossOnSaleOfDebtInvestments": {
     "auth_ref": [
      "r107"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_GainLossOnInvestments",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The difference between the carrying value and the sale price of debt securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale.",
        "label": "Gain (Loss) on Sale of Debt Investments",
        "verboseLabel": "Net investment gains (losses), fixed maturity securities"
       }
      }
     },
     "localname": "GainLossOnSaleOfDebtInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GainLossOnSaleOfEquityInvestments": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_GainLossOnInvestments",
       "weight": 1.0
      }
     },
     "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",
        "verboseLabel": "Net investment gains (losses), equity securities"
       }
      }
     },
     "localname": "GainLossOnSaleOfEquityInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GainLossOnSaleOfInvestments": {
     "auth_ref": [
      "r107"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_GainLossOnInvestments",
       "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",
        "verboseLabel": "Net investment gains (losses), other"
       }
      }
     },
     "localname": "GainLossOnSaleOfInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GainLossOnSalesOfLoansNet": {
     "auth_ref": [
      "r107",
      "r506",
      "r572"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_GainLossOnInvestments",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.",
        "label": "Gain (Loss) on Sales of Loans, Net",
        "verboseLabel": "Net investment gains (losses), mortgage loans"
       }
      }
     },
     "localname": "GainLossOnSalesOfLoansNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GainsLossesOnSalesOfInvestmentRealEstate": {
     "auth_ref": [
      "r77",
      "r78",
      "r107",
      "r502",
      "r566",
      "r602",
      "r603",
      "r604"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_GainLossOnInvestments",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.",
        "label": "Gains (Losses) on Sales of Investment Real Estate",
        "verboseLabel": "Net investment gains (losses), limited partnerships and LLCs"
       }
      }
     },
     "localname": "GainsLossesOnSalesOfInvestmentRealEstate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsComponentsOfNetInvestmentGainsLossesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GeneralBusinessMember": {
     "auth_ref": [
      "r321"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tax credit carryforwards which include, but are not limited to, investment, alcohol fuels, low income housing, alternative fuels, alternative motor vehicles, hurricane relief, disabled access, renewable resources electricity production, employer social security, orphan drug, new markets, employer provided child care facilities and services, biodiesel fuels, low sulfur diesel fuel production, distilled spirits and the advanced nuclear power facilities credit.",
        "label": "General Business Tax Credit Carryforward [Member]",
        "verboseLabel": "General business tax credit carryforward"
       }
      }
     },
     "localname": "GeneralBusinessMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_GrossInvestmentIncomeOperating": {
     "auth_ref": [
      "r571"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.",
        "label": "Gross Investment Income, Operating",
        "terseLabel": "Gross investment income"
       }
      }
     },
     "localname": "GrossInvestmentIncomeOperating",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GuaranteeObligationsCurrentCarryingValue": {
     "auth_ref": [
      "r263"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.",
        "label": "Guarantor Obligations, Current Carrying Value",
        "terseLabel": "Liabilities for indemnities, guarantees and commitments"
       }
      }
     },
     "localname": "GuaranteeObligationsCurrentCarryingValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GuaranteeObligationsLineItems": {
     "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": "Guarantor Obligations [Line Items]",
        "terseLabel": "Guarantor Obligations [Line Items]"
       }
      }
     },
     "localname": "GuaranteeObligationsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_GuaranteeObligationsMaximumExposure": {
     "auth_ref": [
      "r262"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.",
        "label": "Guarantor Obligations, Maximum Exposure, Undiscounted",
        "terseLabel": "Cumulative maximum indemnities and guarantees contractual limitation"
       }
      }
     },
     "localname": "GuaranteeObligationsMaximumExposure",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GuaranteedInsuranceContractTypeOfBenefitAxis": {
     "auth_ref": [
      "r523",
      "r613",
      "r647"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by benefit for guaranteed benefit obligations in traditional and nontraditional long-duration contracts with policy and contract holders.",
        "label": "Guaranteed Insurance Contract, Type of Benefit [Axis]",
        "terseLabel": "Guaranteed Insurance Contract, Type of Benefit [Axis]",
        "verboseLabel": "Guaranteed Insurance Contract, Type of Benefit [Axis]"
       }
      }
     },
     "localname": "GuaranteedInsuranceContractTypeOfBenefitAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_GuaranteedInsuranceContractTypeOfBenefitDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Benefit for guaranteed benefit obligations in traditional and nontraditional long-duration contracts with policy and contract holders.",
        "label": "Guaranteed Insurance Contract, Type of Benefit [Domain]",
        "terseLabel": "Guaranteed Insurance Contract, Type of Benefit [Domain]"
       }
      }
     },
     "localname": "GuaranteedInsuranceContractTypeOfBenefitDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_GuaranteedInsuranceContractTypeOfGuaranteeAxis": {
     "auth_ref": [
      "r523",
      "r613",
      "r650"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by guarantee for guaranteed benefit obligations in traditional and nontraditional long-duration contracts with policy and contract holders.",
        "label": "Guaranteed Insurance Contract, Type of Guarantee [Axis]",
        "terseLabel": "Guaranteed Insurance Contract, Type of Guarantee [Axis]"
       }
      }
     },
     "localname": "GuaranteedInsuranceContractTypeOfGuaranteeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_GuaranteedInsuranceContractTypeOfGuaranteeDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Guarantee for guaranteed benefit obligations in traditional and nontraditional long-duration contracts with policy and contract holders.",
        "label": "Guaranteed Insurance Contract, Type of Guarantee [Domain]",
        "terseLabel": "Guaranteed Insurance Contract, Type of Guarantee [Domain]"
       }
      }
     },
     "localname": "GuaranteedInsuranceContractTypeOfGuaranteeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_GuaranteedMinimumDeathBenefitMember": {
     "auth_ref": [
      "r523",
      "r613",
      "r648"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Feature in an insurance contract that guarantees a minimum amount that will be payable upon the death of the insured.",
        "label": "Guaranteed Minimum Death Benefit [Member]",
        "terseLabel": "Guaranteed Minimum Death Benefit",
        "verboseLabel": "Guaranteed Death Benefits"
       }
      }
     },
     "localname": "GuaranteedMinimumDeathBenefitMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_GuaranteedMinimumIncomeBenefitMember": {
     "auth_ref": [
      "r523",
      "r613",
      "r649"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Feature in an insurance contract that provides a guaranteed minimum amount available for annuitization after a specified period, which is in addition to a guaranteed minimum annuity rate.",
        "label": "Guaranteed Minimum Income Benefit [Member]",
        "terseLabel": "Guaranteed Minimum Income Benefit"
       }
      }
     },
     "localname": "GuaranteedMinimumIncomeBenefitMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_HedgingDesignationAxis": {
     "auth_ref": [
      "r367",
      "r386"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by designation of purpose of derivative instrument.",
        "label": "Hedging Designation [Axis]",
        "terseLabel": "Hedging Designation [Axis]"
       }
      }
     },
     "localname": "HedgingDesignationAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_HedgingDesignationDomain": {
     "auth_ref": [
      "r367"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Designation of purpose of derivative instrument.",
        "label": "Hedging Designation [Domain]",
        "terseLabel": "Hedging Designation [Domain]"
       }
      }
     },
     "localname": "HedgingDesignationDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_HedgingRelationshipDomain": {
     "auth_ref": [
      "r367"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Nature or intent of a hedge.",
        "label": "Hedging Relationship [Domain]",
        "terseLabel": "Hedging Relationship [Domain]"
       }
      }
     },
     "localname": "HedgingRelationshipDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": {
     "auth_ref": [
      "r73",
      "r140",
      "r481",
      "r503",
      "r569"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_ProfitLoss",
       "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": "Pre-tax adjusted earnings",
        "totalLabel": "Income (loss) before provision for income tax",
        "verboseLabel": "Income (loss) before provision for income tax"
       }
      }
     },
     "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions": {
     "auth_ref": [
      "r107"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.",
        "label": "Income (Loss) from Equity Method Investments, Net of Dividends or Distributions",
        "negatedLabel": "(Income) loss from equity method investments, net of dividends and distributions"
       }
      }
     },
     "localname": "IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeLossFromSubsidiariesBeforeTax": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before tax of income (loss) of subsidiary attributable to the parent entity.",
        "label": "Income (Loss) from Subsidiaries, before Tax",
        "terseLabel": "Income (Loss) from Subsidiaries, before Tax"
       }
      }
     },
     "localname": "IncomeLossFromSubsidiariesBeforeTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeStatementAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Income Statement [Abstract]"
       }
      }
     },
     "localname": "IncomeStatementAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeStatementLocationAxis": {
     "auth_ref": [
      "r242"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeTaxAuthorityAxis": {
     "auth_ref": [
      "r306"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by tax jurisdiction.",
        "label": "Income Tax Authority [Axis]",
        "terseLabel": "Income Tax Authority [Axis]"
       }
      }
     },
     "localname": "IncomeTaxAuthorityAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxAuthorityDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Agency, division or body classification that levies income taxes, examines tax returns for compliance, or grants exemptions from or makes other decisions pertaining to income taxes.",
        "label": "Income Tax Authority [Domain]",
        "terseLabel": "Income Tax Authority [Domain]"
       }
      }
     },
     "localname": "IncomeTaxAuthorityDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeTaxDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Income Tax Disclosure [Abstract]"
       }
      }
     },
     "localname": "IncomeTaxDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxDisclosureTextBlock": {
     "auth_ref": [
      "r333"
     ],
     "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]",
        "verboseLabel": "Income Tax"
       }
      }
     },
     "localname": "IncomeTaxDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTax"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeTaxExaminationPenaltiesExpense": {
     "auth_ref": [
      "r304"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of estimated penalties recognized in the period arising from income tax examinations.",
        "label": "Income Tax Examination, Penalties Expense",
        "terseLabel": "Income Tax Examination, Penalties Expense"
       }
      }
     },
     "localname": "IncomeTaxExaminationPenaltiesExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r120",
      "r162",
      "r330"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_ProfitLoss",
       "weight": -1.0
      },
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
        "label": "Income Tax Expense (Benefit)",
        "negatedLabel": "Provision for income tax expense (benefit)",
        "terseLabel": "Income Tax Expense (Benefit)",
        "totalLabel": "Provision for income tax expense (benefit)",
        "verboseLabel": "Provision for income tax expense (benefit)"
       }
      }
     },
     "localname": "IncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails",
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails",
      "http://www.brighthousefinancial.com/role/OrganizationalChangesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Income Tax Expense (Benefit), Continuing Operations [Abstract]",
        "verboseLabel": "Current and Deferred"
       }
      }
     },
     "localname": "IncomeTaxExpenseBenefitContinuingOperationsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxProvisionForIncomeTaxFromContinuingOperationsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Effective Income Tax Rate Reconciliation, Amount [Abstract]",
        "verboseLabel": "Income tax expense benefit continuing operations income tax reconciliation"
       }
      }
     },
     "localname": "IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxPolicyTextBlock": {
     "auth_ref": [
      "r69",
      "r117",
      "r299",
      "r300",
      "r314",
      "r315",
      "r319",
      "r332",
      "r683"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.",
        "label": "Income Tax, Policy [Policy Text Block]",
        "terseLabel": "Income Tax, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "IncomeTaxPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeTaxReceivable": {
     "auth_ref": [
      "r22",
      "r526"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 6.0,
       "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": "Current income tax recoverable"
       }
      }
     },
     "localname": "IncomeTaxReceivable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance": {
     "auth_ref": [
      "r298",
      "r302",
      "r303"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": 7.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.",
        "label": "Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount",
        "terseLabel": "Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount"
       }
      }
     },
     "localname": "IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationDeductions": {
     "auth_ref": [
      "r302",
      "r303"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": 8.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deductions. Including, but not limited to, extraterritorial income exclusion deduction, qualified production activity deduction, dividend deduction, deduction for dividend paid to employee stock ownership plan, Medicare prescription drug benefit subsidy deduction, and other deductions.",
        "label": "Effective Income Tax Rate Reconciliation, Deduction, Amount",
        "negatedLabel": "Goodwill impairment"
       }
      }
     },
     "localname": "IncomeTaxReconciliationDeductions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationDeductionsDividends": {
     "auth_ref": [
      "r302",
      "r303"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for dividend.",
        "label": "Effective Income Tax Rate Reconciliation, Deduction, Dividends, Amount",
        "negatedLabel": "Dividend received deduction"
       }
      }
     },
     "localname": "IncomeTaxReconciliationDeductionsDividends",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationDispositionOfBusiness": {
     "auth_ref": [
      "r302",
      "r303"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": 9.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to the disposition of a business not qualifying as a discontinued operation.",
        "label": "Effective Income Tax Rate Reconciliation, Disposition of Business, Amount",
        "verboseLabel": "Sale of subsidiary"
       }
      }
     },
     "localname": "IncomeTaxReconciliationDispositionOfBusiness",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate": {
     "auth_ref": [
      "r119",
      "r302",
      "r303"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.",
        "label": "Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount",
        "verboseLabel": "Tax provision at statutory rate"
       }
      }
     },
     "localname": "IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationOtherAdjustments": {
     "auth_ref": [
      "r302"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.",
        "label": "Effective Income Tax Rate Reconciliation, Other Adjustments, Amount",
        "terseLabel": "Excess loss account - Separation from MetLife (1)"
       }
      }
     },
     "localname": "IncomeTaxReconciliationOtherAdjustments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationOtherReconcilingItems": {
     "auth_ref": [
      "r302",
      "r303"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": 10.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.",
        "label": "Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount",
        "verboseLabel": "Other, net"
       }
      }
     },
     "localname": "IncomeTaxReconciliationOtherReconcilingItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes": {
     "auth_ref": [
      "r302",
      "r303"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense (benefit).",
        "label": "Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount",
        "verboseLabel": "Prior year tax"
       }
      }
     },
     "localname": "IncomeTaxReconciliationPriorYearIncomeTaxes",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationTaxCredits": {
     "auth_ref": [
      "r302",
      "r303"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.",
        "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Amount",
        "negatedLabel": "Tax credits"
       }
      }
     },
     "localname": "IncomeTaxReconciliationTaxCredits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfIncomeTaxProvisionBetweenUsStatutoryRateAndAsReportedForContinuingOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxesPaid": {
     "auth_ref": [
      "r104",
      "r112"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.",
        "label": "Income Taxes Paid",
        "terseLabel": "Income Taxes Paid"
       }
      }
     },
     "localname": "IncomeTaxesPaid",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxesPaidNet": {
     "auth_ref": [
      "r112"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.",
        "label": "Income Taxes Paid, Net",
        "terseLabel": "Net cash paid (received) for income tax"
       }
      }
     },
     "localname": "IncomeTaxesPaidNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables": {
     "auth_ref": [
      "r106"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 9.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the amount due from customers for the credit sale of goods and services; includes accounts receivable and other types of receivables.",
        "label": "Increase (Decrease) in Accounts and Other Receivables",
        "negatedLabel": "Change in premiums, reinsurance and other receivables"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccountsAndOtherReceivables",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable": {
     "auth_ref": [
      "r106"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 11.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction.",
        "label": "Increase (Decrease) in Income Taxes Payable",
        "verboseLabel": "Change in income tax"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccruedIncomeTaxesPayable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccruedInvestmentIncomeReceivable": {
     "auth_ref": [
      "r106"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in investment income that has been earned but not yet received in cash.",
        "label": "Increase (Decrease) in Accrued Investment Income Receivable",
        "negatedLabel": "Change in accrued investment income"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccruedInvestmentIncomeReceivable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInDeferredPolicyAcquisitionCosts": {
     "auth_ref": [
      "r106"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 10.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the balance sheet value of capitalized sales costs that are associated with acquiring a new insurance customers.",
        "label": "Increase (Decrease) in Deferred Policy Acquisition Costs",
        "negatedLabel": "Change in deferred policy acquisition costs and value of business acquired, net"
       }
      }
     },
     "localname": "IncreaseDecreaseInDeferredPolicyAcquisitionCosts",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInInsuranceLiabilities": {
     "auth_ref": [
      "r106"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 13.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) in insurance liability balances during the period.",
        "label": "Increase (Decrease) in Insurance Liabilities",
        "verboseLabel": "Change in future policy benefits and other policy-related balances"
       }
      }
     },
     "localname": "IncreaseDecreaseInInsuranceLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInNotesReceivableRelatedParties": {
     "auth_ref": [
      "r106"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the amount owed to the reporting entity in the form of loans and obligations (generally evidenced by promissory notes) made to the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management, an entity and its principal owners, management, or member of their immediate families, affiliates, or other parties with the ability to exert significant influence.",
        "label": "Increase (Decrease) in Notes Receivable, Related Parties",
        "verboseLabel": "Decrease in notes receivable due from a related party due to exchange of debt for notes receivable due from a related party"
       }
      }
     },
     "localname": "IncreaseDecreaseInNotesReceivableRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInOtherOperatingAssets": {
     "auth_ref": [
      "r106"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 12.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in operating assets classified as other.",
        "label": "Increase (Decrease) in Other Operating Assets",
        "negatedLabel": "Change in other assets"
       }
      }
     },
     "localname": "IncreaseDecreaseInOtherOperatingAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInOtherOperatingLiabilities": {
     "auth_ref": [
      "r106"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 14.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in operating liabilities classified as other.",
        "label": "Increase (Decrease) in Other Operating Liabilities",
        "verboseLabel": "Change in other liabilities"
       }
      }
     },
     "localname": "IncreaseDecreaseInOtherOperatingLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IndustrialMiscellaneousAndAllOthersMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item represents investments by the reporting entity in equity securities issued by any type of company other than public utilities, banks, trusts, and insurance companies the investments in which are summarized elsewhere.",
        "label": "Industrial, Miscellaneous, and All Others [Member]",
        "verboseLabel": "Industrial, miscellaneous and all other"
       }
      }
     },
     "localname": "IndustrialMiscellaneousAndAllOthersMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_InsuranceAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Insurance [Abstract]"
       }
      }
     },
     "localname": "InsuranceAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_InsuranceCommissionsAndFees": {
     "auth_ref": [
      "r505",
      "r573"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 7.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      },
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 4.0,
       "parentTag": "us-gaap_Revenues",
       "weight": 1.0
      },
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products.",
        "label": "Insurance Commissions and Fees",
        "negatedLabel": "Universal life and investment-type product policy fees",
        "terseLabel": "Insurance Commissions and Fees",
        "totalLabel": "Net universal life and investment-type product policy fees",
        "verboseLabel": "Universal life and investment-type product policy fees"
       }
      }
     },
     "localname": "InsuranceCommissionsAndFees",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails",
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InsuranceDisclosureTextBlock": {
     "auth_ref": [
      "r665"
     ],
     "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]",
        "verboseLabel": "Insurance"
       }
      }
     },
     "localname": "InsuranceDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/Insurance"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_InsurancePremiumsRevenueRecognitionPolicy": {
     "auth_ref": [
      "r630"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for revenue recognition of insurance premium. Includes, but is not limited to, basis for measurement and timing of recognition of revenue from insurance premium received from contract holder and method used in performing premium deficiency testing.",
        "label": "Insurance Premiums Revenue Recognition, Policy [Policy Text Block]",
        "terseLabel": "Insurance Premiums Revenue Recognition, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "InsurancePremiumsRevenueRecognitionPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_InsuranceServicesRevenue": {
     "auth_ref": [
      "r570"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Revenue from insurance services, including net premiums earned, gain on sale of insurance block, agency management fees and insurance contract fees and commissions.",
        "label": "Insurance Services Revenue",
        "verboseLabel": "Total premiums, universal life and investment-type product policy fees and other revenues"
       }
      }
     },
     "localname": "InsuranceServicesRevenue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationPremiumsUniversalLifeAndInvestmentTypeProductPolicyFeesAndOtherRevenuesByMajorProductGroupDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationPolicyPolicyTextBlock": {
     "auth_ref": [
      "r661"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for measuring intangible assets arising from insurance and reinsurance contracts acquired in a business combination. This disclosure describes the amortization method used in connection with a business combination entered into on or after December 15, 2008.",
        "label": "Intangible Assets Arising from Insurance Contracts Acquired in Business Combination, Policy [Policy Text Block]",
        "terseLabel": "Intangible Assets Arising from Insurance Contracts Acquired in Business Combination, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IntangibleAssetsDisclosureTextBlock": {
     "auth_ref": [
      "r241"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for all or part of the information related to intangible assets.",
        "label": "Intangible Assets Disclosure [Text Block]",
        "verboseLabel": "Intangible Assets Disclosure [Text Block]"
       }
      }
     },
     "localname": "IntangibleAssetsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangibles"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_InterestAndDebtExpense": {
     "auth_ref": [
      "r437"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails": {
       "order": 8.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Interest and debt related expenses associated with nonoperating financing activities of the entity.",
        "label": "Interest and Debt Expense",
        "verboseLabel": "Interest expense on debt"
       }
      }
     },
     "localname": "InterestAndDebtExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestCreditedToPolicyholdersAccountBalances": {
     "auth_ref": [
      "r519",
      "r567",
      "r612",
      "r615",
      "r618"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 6.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      },
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 3.0,
       "parentTag": "us-gaap_BenefitsLossesAndExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of interest expense for allocation to policyholder account balance.",
        "label": "Policyholder Account Balance, Interest Expense",
        "terseLabel": "Interest credited to policyholder account balances",
        "verboseLabel": "Interest credited to policyholder account balances"
       }
      }
     },
     "localname": "InterestCreditedToPolicyholdersAccountBalances",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestExpense": {
     "auth_ref": [
      "r71",
      "r161",
      "r436",
      "r440",
      "r507"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestExpenseDebt": {
     "auth_ref": [
      "r85",
      "r269"
     ],
     "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": "Interest expense on long-term debt"
       }
      }
     },
     "localname": "InterestExpenseDebt",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestPaidNet": {
     "auth_ref": [
      "r98",
      "r103",
      "r112"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.",
        "label": "Interest Paid, Excluding Capitalized Interest, Operating Activities",
        "terseLabel": "Net cash paid (received) for interest"
       }
      }
     },
     "localname": "InterestPaidNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestRateCapMember": {
     "auth_ref": [
      "r380"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contract in which the cap writer, in return for a premium, agrees to limit, or cap, the cap holder's risk associated with an increase in interest rates. If rates go above a specified interest-rate-level (the strike price or the cap rate), the cap holder is entitled to receive cash payments equal to the excess of the market rate over the strike price multiplied by the notional principal amount.",
        "label": "Interest Rate Cap [Member]",
        "terseLabel": "Interest rate caps"
       }
      }
     },
     "localname": "InterestRateCapMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_InterestRateContractMember": {
     "auth_ref": [
      "r285",
      "r380"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Derivative instrument whose primary underlying risk is tied to the right to receive or pay a sum of money at a given interest rate.",
        "label": "Interest Rate Contract [Member]",
        "terseLabel": "Interest rate derivatives",
        "verboseLabel": "Interest rate"
       }
      }
     },
     "localname": "InterestRateContractMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_InterestRateSwapMember": {
     "auth_ref": [
      "r380"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period.",
        "label": "Interest Rate Swap [Member]",
        "terseLabel": "Interest rate swaps",
        "verboseLabel": "Interest rate swaps"
       }
      }
     },
     "localname": "InterestRateSwapMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_InterestRateSwaptionMember": {
     "auth_ref": [
      "r380"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "An option granting the owner the right but not the obligation to enter into an interest rate swap.",
        "label": "Interest Rate Swaption [Member]",
        "terseLabel": "Interest rate options"
       }
      }
     },
     "localname": "InterestRateSwaptionMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_InterestRevenueExpenseNet": {
     "auth_ref": [
      "r163"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of interest revenue (income derived from investments in debt securities and on cash and cash equivalents) net of interest expense (cost of borrowed funds accounted for as interest).",
        "label": "Interest Revenue (Expense), Net",
        "terseLabel": "Interest revenue"
       }
      }
     },
     "localname": "InterestRevenueExpenseNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InternalCreditAssessmentAxis": {
     "auth_ref": [
      "r176",
      "r218",
      "r222",
      "r224",
      "r261",
      "r391"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by entity-defined rating.",
        "label": "Internal Credit Assessment [Axis]",
        "terseLabel": "Internal Credit Assessment [Axis]"
       }
      }
     },
     "localname": "InternalCreditAssessmentAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_InternalCreditAssessmentDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Entity defined credit risk rating.",
        "label": "Internal Credit Assessment [Domain]",
        "terseLabel": "Internal Credit Assessment [Domain]"
       }
      }
     },
     "localname": "InternalCreditAssessmentDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_InvestmentIncomeInvestmentExpense": {
     "auth_ref": [
      "r86",
      "r571"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of expenses related to the generation of investment income.",
        "label": "Investment Income, Investment Expense",
        "terseLabel": "Less: Investment expenses"
       }
      }
     },
     "localname": "InvestmentIncomeInvestmentExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InvestmentIncomeMember": {
     "auth_ref": [
      "r384"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Primary financial statement caption encompassing investment income.",
        "label": "Investment Income [Member]",
        "terseLabel": "Net investment income"
       }
      }
     },
     "localname": "InvestmentIncomeMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_InvestmentIncomeTextBlock": {
     "auth_ref": [
      "r83",
      "r85",
      "r86",
      "r571"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of investment income, including, but not limited to, interest and dividend income and amortization of discount (premium) derived from debt and equity securities. Excludes realized and unrealized gain (loss) on investments.",
        "label": "Investment Income [Table Text Block]",
        "verboseLabel": "Components of Net Investment Income"
       }
      }
     },
     "localname": "InvestmentIncomeTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_InvestmentPolicyTextBlock": {
     "auth_ref": [
      "r210"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for investment in financial asset.",
        "label": "Investment, Policy [Policy Text Block]",
        "terseLabel": "Investments, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "InvestmentPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_InvestmentTypeAxis": {
     "auth_ref": [
      "r669",
      "r670",
      "r671",
      "r675"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of investments.",
        "label": "Investment Type [Axis]",
        "terseLabel": "Investment Type [Axis]"
       }
      }
     },
     "localname": "InvestmentTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_InvestmentTypeCategorizationMember": {
     "auth_ref": [
      "r669",
      "r670",
      "r671",
      "r675"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Asset obtained to generate income or appreciate in value.",
        "label": "Investments [Domain]",
        "terseLabel": "Investments [Domain]"
       }
      }
     },
     "localname": "InvestmentTypeCategorizationMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_Investments": {
     "auth_ref": [
      "r551"
     ],
     "calculation": {
      "http://www.brighthousefinancial.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",
        "terseLabel": "Total investments",
        "totalLabel": "Total investments"
       }
      }
     },
     "localname": "Investments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InvestmentsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Investments [Abstract]",
        "terseLabel": "Investments:",
        "verboseLabel": "Investments:"
       }
      }
     },
     "localname": "InvestmentsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.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]",
        "verboseLabel": "Maturities of Fixed Maturity Securities"
       }
      }
     },
     "localname": "InvestmentsClassifiedByContractualMaturityDateTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.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/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValue": {
     "auth_ref": [
      "r672",
      "r673",
      "r674"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Value of the investment at close of period. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.",
        "label": "Investments in and Advances to Affiliates, at Fair Value",
        "terseLabel": "Investment in subsidiaries"
       }
      }
     },
     "localname": "InvestmentsInAndAdvancesToAffiliatesAtFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock": {
     "auth_ref": [
      "r206",
      "r482",
      "r514",
      "r680"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for  investments in certain debt and equity securities.",
        "label": "Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]",
        "verboseLabel": "Investments"
       }
      }
     },
     "localname": "InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/Investments"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_InvestmentsSegmentMember": {
     "auth_ref": [
      "r620"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contract providing variable periodic payment and other form of investment.",
        "label": "Investment Product [Member]",
        "terseLabel": "Annuity products"
       }
      }
     },
     "localname": "InvestmentsSegmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationPremiumsUniversalLifeAndInvestmentTypeProductPolicyFeesAndOtherRevenuesByMajorProductGroupDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LaborAndRelatedExpense": {
     "auth_ref": [
      "r76"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.",
        "label": "Labor and Related Expense",
        "verboseLabel": "Compensation"
       }
      }
     },
     "localname": "LaborAndRelatedExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_Liabilities": {
     "auth_ref": [
      "r26"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.",
        "label": "Liabilities",
        "terseLabel": "Total liabilities",
        "totalLabel": "Total liabilities"
       }
      }
     },
     "localname": "Liabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Liabilities [Abstract]",
        "terseLabel": "Liabilities:",
        "verboseLabel": "Liabilities"
       }
      }
     },
     "localname": "LiabilitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LiabilitiesAndStockholdersEquity": {
     "auth_ref": [
      "r20",
      "r490",
      "r542"
     ],
     "calculation": {
      "http://www.brighthousefinancial.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",
        "terseLabel": "Total liabilities and equity",
        "totalLabel": "Total liabilities and equity"
       }
      }
     },
     "localname": "LiabilitiesAndStockholdersEquity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesAndStockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Liabilities and Equity [Abstract]",
        "verboseLabel": "Liabilities and Equity"
       }
      }
     },
     "localname": "LiabilitiesAndStockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LiabilitiesFairValueDisclosure": {
     "auth_ref": [
      "r409"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value of financial and nonfinancial obligations.",
        "label": "Financial and Nonfinancial Liabilities, Fair Value Disclosure",
        "verboseLabel": "Total liabilities"
       }
      }
     },
     "localname": "LiabilitiesFairValueDisclosure",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesFairValueDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Liabilities, Fair Value Disclosure [Abstract]",
        "verboseLabel": "Liabilities [Abstract]"
       }
      }
     },
     "localname": "LiabilitiesFairValueDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross": {
     "auth_ref": [
      "r523",
      "r651"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of expected guaranteed benefits in excess of the projected account balances for minimum guaranteed benefit contracts, as of the balance sheet date.",
        "label": "Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross",
        "periodEndLabel": "Balance at December 31,",
        "periodStartLabel": "Balance at January 1,"
       }
      }
     },
     "localname": "LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityGross",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityNet": {
     "auth_ref": [
      "r523",
      "r651"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of expected guaranteed benefits in excess of the projected account balances for minimum guaranteed benefit contracts, net of reinsurance recoverables, as of the balance sheet date.",
        "label": "Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net",
        "terseLabel": "Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net"
       }
      }
     },
     "localname": "LiabilitiesForGuaranteesOnLongDurationContractsGuaranteedBenefitLiabilityNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsIncurredBenefits1": {
     "auth_ref": [
      "r523",
      "r653"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of guaranteed minimum benefit expense incurred for expected guaranteed minimum benefits in excess of projected account values.",
        "label": "Liabilities for Guarantees on Long-Duration Contracts, Incurred Benefits",
        "verboseLabel": "Incurred guaranteed benefits"
       }
      }
     },
     "localname": "LiabilitiesForGuaranteesOnLongDurationContractsIncurredBenefits1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Liabilities for Guarantees on Long-Duration Contracts [Line Items]"
       }
      }
     },
     "localname": "LiabilitiesForGuaranteesOnLongDurationContractsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsPaymentForBenefits": {
     "auth_ref": [
      "r99",
      "r523",
      "r653"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash outflow to policyholders and contract holders for guaranteed minimum benefit payments.",
        "label": "Liabilities for Guarantees on Long-Duration Contracts, Payment for Benefits",
        "negatedLabel": "Paid guaranteed benefits"
       }
      }
     },
     "localname": "LiabilitiesForGuaranteesOnLongDurationContractsPaymentForBenefits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesForGuaranteesOnLongDurationContractsTable": {
     "auth_ref": [
      "r523",
      "r646"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A table reflecting the guaranteed minimum benefits by product type due contract holders under annuity and life products having traditional and nontraditional terms.",
        "label": "Liabilities for Guarantees on Long-Duration Contracts [Table]"
       }
      }
     },
     "localname": "LiabilitiesForGuaranteesOnLongDurationContractsTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LiabilityForFuturePolicyBenefitAfterReinsurance": {
     "auth_ref": [
      "r607",
      "r617",
      "r621"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after effect of reinsurance, of liability for future policy benefit.",
        "label": "Liability for Future Policy Benefit, after Reinsurance",
        "terseLabel": "Liability for Future Policy Benefit, after Reinsurance",
        "verboseLabel": "Future policy benefits"
       }
      }
     },
     "localname": "LiabilityForFuturePolicyBenefitAfterReinsurance",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilityForFuturePolicyBenefits": {
     "auth_ref": [
      "r527",
      "r607",
      "r609",
      "r617",
      "r621"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before effect of reinsurance, of present value of future benefit to be paid to or on behalf of policyholder and related expense less present value of future net premium receivable under insurance contract.",
        "label": "Liability for Future Policy Benefit, before Reinsurance",
        "terseLabel": "Future policy benefits",
        "verboseLabel": "Future policy benefits"
       }
      }
     },
     "localname": "LiabilityForFuturePolicyBenefits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilityForFuturePolicyBenefitsInterestRate": {
     "auth_ref": [
      "r553",
      "r610"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Rate of interest used to calculate the liability for future policy benefits.",
        "label": "Liability for Future Policy Benefits, Interest Rate",
        "terseLabel": "Liability for Future Policy Benefits, Interest Rate"
       }
      }
     },
     "localname": "LiabilityForFuturePolicyBenefitsInterestRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_LiabilityForPolicyholderContractDepositsInterestRate": {
     "auth_ref": [
      "r553",
      "r610"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Rate of interest credited to policyholder deposits.",
        "label": "Liability for Policyholder Contract Deposits, Interest Rate",
        "terseLabel": "Liability for Policyholder Contract Deposits, Interest Rate"
       }
      }
     },
     "localname": "LiabilityForPolicyholderContractDepositsInterestRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_LifeInsuranceSegmentMember": {
     "auth_ref": [
      "r587",
      "r620"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contract providing insurance coverage for death benefit.",
        "label": "Life Insurance Product Line [Member]",
        "terseLabel": "Life insurance (1)",
        "verboseLabel": "Life insurance products"
       }
      }
     },
     "localname": "LifeInsuranceSegmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationPremiumsUniversalLifeAndInvestmentTypeProductPolicyFeesAndOtherRevenuesByMajorProductGroupDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LifePremiumsAsPercentageOfGrossPremiums": {
     "auth_ref": [
      "r152"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Ratio with total life insurance premiums in numerator and total GAAP premiums in the denominator.",
        "label": "Life Premiums as Percentage of Gross Premiums",
        "terseLabel": "Life Premiums as Percentage of Gross Premiums"
       }
      }
     },
     "localname": "LifePremiumsAsPercentageOfGrossPremiums",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_LimitedPartnerMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Party to a partnership business who has limited liability.",
        "label": "Limited Partner [Member]",
        "terseLabel": "Other Limited Partnership Interests"
       }
      }
     },
     "localname": "LimitedPartnerMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LineOfCredit": {
     "auth_ref": [
      "r10",
      "r488",
      "r530"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.",
        "label": "Long-term Line of Credit",
        "terseLabel": "Credit facilities, outstanding balance",
        "verboseLabel": "Long-term Line of Credit"
       }
      }
     },
     "localname": "LineOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityCommitmentFeeAmount": {
     "auth_ref": [
      "r25"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the fee for available but unused credit capacity under the credit facility.",
        "label": "Line of Credit Facility, Commitment Fee Amount",
        "terseLabel": "Credit facilities, commitment fee amount"
       }
      }
     },
     "localname": "LineOfCreditFacilityCommitmentFeeAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Line of Credit Facility [Line Items]",
        "terseLabel": "Line of Credit Facility [Line Items]"
       }
      }
     },
     "localname": "LineOfCreditFacilityLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity": {
     "auth_ref": [
      "r25"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.",
        "label": "Line of Credit Facility, Maximum Borrowing Capacity",
        "terseLabel": "Credit facilities, maximum borrowing capacity",
        "verboseLabel": "Line of Credit Facility, Maximum Borrowing Capacity"
       }
      }
     },
     "localname": "LineOfCreditFacilityMaximumBorrowingCapacity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity": {
     "auth_ref": [
      "r25"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).",
        "label": "Line of Credit Facility, Remaining Borrowing Capacity",
        "terseLabel": "Credit facilities, remaining borrowing capacity"
       }
      }
     },
     "localname": "LineOfCreditFacilityRemainingBorrowingCapacity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityTable": {
     "auth_ref": [
      "r25",
      "r125"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A table or schedule providing information pertaining to short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.",
        "label": "Line of Credit Facility [Table]",
        "terseLabel": "Line of Credit Facility [Table]"
       }
      }
     },
     "localname": "LineOfCreditFacilityTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceObligationsUnderFundingAgreementsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LoanOriginationCommitmentsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Commitments to borrowers or third party investors for the origination of a loan.",
        "label": "Loan Origination Commitments [Member]",
        "verboseLabel": "Mortgage Loan Commitments"
       }
      }
     },
     "localname": "LoanOriginationCommitmentsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesCommitmentsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LoanToValueAxis": {
     "auth_ref": [
      "r223"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by debt-to-value ratio, for example, but not limited to, 80% to 100%. Element name and standard label in Debt-to-Value [numeric lower end] to [numeric higher end] Percent [Member] or Debt-to-Value Greater Than [low end numeric value] Percent [Member] or Debt-to-Value Less Than [high end numeric value] Percent [Member] formats.",
        "label": "Debt-to-Value [Axis]",
        "terseLabel": "Debt-to-Value [Axis]"
       }
      }
     },
     "localname": "LoanToValueAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LoanToValueDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Debt-to-value (DTV) ratio, for example, but not limited to, 80% to 100%. Element name and standard label in DTV [numeric lower end] to [numeric higher end] Percent [Member] or DTV Greater Than [low end numeric value] Percent [Member] or DTV Less Than [high end numeric value] Percent [Member] formats.",
        "label": "Debt-to-Value [Domain]",
        "terseLabel": "Debt-to-Value [Domain]"
       }
      }
     },
     "localname": "LoanToValueDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LoansAndLeasesReceivableDisclosureLineItems": {
     "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": "Loans and Leases Receivable Disclosure [Line Items]",
        "terseLabel": "Loans and Leases Receivable Disclosure [Line Items]"
       }
      }
     },
     "localname": "LoansAndLeasesReceivableDisclosureLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LoansAndLeasesReceivableDisclosureTable": {
     "auth_ref": [
      "r174"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about loans and leases receivable.",
        "label": "Loans and Leases Receivable Disclosure [Table]",
        "terseLabel": "Loans and Leases Receivable Disclosure [Table]"
       }
      }
     },
     "localname": "LoansAndLeasesReceivableDisclosureTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest": {
     "auth_ref": [
      "r178"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized.",
        "label": "Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest",
        "terseLabel": "Recorded Investment of Loans in Nonaccrual Status"
       }
      }
     },
     "localname": "LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LoansInsurancePolicy": {
     "auth_ref": [
      "r500",
      "r549"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_Investments",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allowance of loans made to policy and contract holders using their life insurance contracts' cash value or separate accounts as collateral. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums over and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.",
        "label": "Loans, Gross, Insurance Policy",
        "terseLabel": "Policy loans"
       }
      }
     },
     "localname": "LoansInsurancePolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebt": {
     "auth_ref": [
      "r10",
      "r268",
      "r488",
      "r537"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 6.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "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": "Long-term debt",
        "verboseLabel": "Long-term debt"
       }
      }
     },
     "localname": "LongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/LongTermDebtDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtFairValue": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.",
        "label": "Long-term Debt, Fair Value",
        "verboseLabel": "Long-term debt"
       }
      }
     },
     "localname": "LongTermDebtFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive": {
     "auth_ref": [
      "r136",
      "r267"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing 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": "Long-term Debt, Maturities, Repayments of Principal after Year Five",
        "terseLabel": "Long-term debt maturities, after year five"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths": {
     "auth_ref": [
      "r136",
      "r267"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months",
        "terseLabel": "Long-term debt maturities, year one"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive": {
     "auth_ref": [
      "r136",
      "r267"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Year Five",
        "terseLabel": "Long-term debt maturities, year five"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour": {
     "auth_ref": [
      "r136",
      "r267"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Year Four",
        "terseLabel": "Long-term debt maturities, year four"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree": {
     "auth_ref": [
      "r136",
      "r267"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Year Three",
        "terseLabel": "Long-term debt maturities, year three"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo": {
     "auth_ref": [
      "r136",
      "r267"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Year Two",
        "terseLabel": "Long-term debt maturities, year two"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LossContingenciesLineItems": {
     "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": "Loss Contingencies [Line Items]",
        "terseLabel": "Loss Contingencies [Line Items]"
       }
      }
     },
     "localname": "LossContingenciesLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesContingenciesNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LossContingenciesTable": {
     "auth_ref": [
      "r251",
      "r252",
      "r253",
      "r254",
      "r255",
      "r256",
      "r257",
      "r259",
      "r260"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Discloses the specific components (such as the nature, name, and date) of the loss contingency and gives an estimate of the possible loss or range of loss, or states that a reasonable estimate cannot be made. Excludes environmental contingencies, warranties and unconditional purchase obligations.",
        "label": "Loss Contingencies [Table]",
        "terseLabel": "Loss Contingencies [Table]"
       }
      }
     },
     "localname": "LossContingenciesTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesContingenciesNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued": {
     "auth_ref": [
      "r250"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.",
        "label": "Loss Contingency, Range of Possible Loss, Portion Not Accrued",
        "terseLabel": "Loss Contingency, Range of Possible Loss, Portion Not Accrued"
       }
      }
     },
     "localname": "LossContingencyRangeOfPossibleLossPortionNotAccrued",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesContingenciesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_MaterialReconcilingItemsMember": {
     "auth_ref": [
      "r167",
      "r168"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Items used in reconciling reportable segments' amounts to consolidated amount. Excludes corporate-level activity.",
        "label": "Segment Reconciling Items [Member]",
        "terseLabel": "Segment Reconciling Items"
       }
      }
     },
     "localname": "MaterialReconcilingItemsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MaturityOvernightMember": {
     "auth_ref": [
      "r129"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Maturity period of the day after the reporting date for repurchase agreements and similar transactions, for example, but not limited to, securities lending arrangements.",
        "label": "Maturity Overnight [Member]",
        "verboseLabel": "Remaining Tenor of Securities Lending Agreements: Open"
       }
      }
     },
     "localname": "MaturityOvernightMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MaturityUpTo30DaysMember": {
     "auth_ref": [
      "r129"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Maturity period of up to 30 days from the reporting date for repurchase agreements and similar transactions, for example, but not limited to, securities lending arrangements.",
        "label": "Maturity Less than 30 Days [Member]",
        "verboseLabel": "Remaining Tenor of Securities Lending Agreements: 1 Month or Less"
       }
      }
     },
     "localname": "MaturityUpTo30DaysMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MeasurementInputEntityCreditRiskMember": {
     "auth_ref": [
      "r412"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement input using risk of default, credit spread risk and downgrade risk.",
        "label": "Measurement Input, Entity Credit Risk [Member]",
        "terseLabel": "Measurement Input, Entity Credit Risk [Member]"
       }
      }
     },
     "localname": "MeasurementInputEntityCreditRiskMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MeasurementInputLapseRateMember": {
     "auth_ref": [
      "r412"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement input using rate insurance policy terminates due to non-payment of premium.",
        "label": "Measurement Input, Lapse Rate [Member]",
        "terseLabel": "Measurement Input, Lapse Rate [Member]"
       }
      }
     },
     "localname": "MeasurementInputLapseRateMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MeasurementInputMortalityRateMember": {
     "auth_ref": [
      "r412"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement input using likelihood of death in specific group to population.",
        "label": "Measurement Input, Mortality Rate [Member]",
        "terseLabel": "Measurement Input, Mortality Rate [Member]"
       }
      }
     },
     "localname": "MeasurementInputMortalityRateMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MeasurementInputTypeAxis": {
     "auth_ref": [
      "r412"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of measurement input used to determine value of asset and liability.",
        "label": "Measurement Input Type [Axis]",
        "terseLabel": "Measurement Input Type [Axis]"
       }
      }
     },
     "localname": "MeasurementInputTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_MeasurementInputTypeDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement input used to determine value of asset and liability.",
        "label": "Measurement Input Type [Domain]",
        "terseLabel": "Measurement Input Type [Domain]"
       }
      }
     },
     "localname": "MeasurementInputTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MeasurementInputUtilizationRateMember": {
     "auth_ref": [
      "r412"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement input using rate at which policyholder exercises optional benefit upon eligibility under insurance contract.",
        "label": "Measurement Input, Utilization Rate [Member]",
        "terseLabel": "Measurement Input, Utilization Rate [Member]"
       }
      }
     },
     "localname": "MeasurementInputUtilizationRateMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MeasurementInputWithdrawalRateMember": {
     "auth_ref": [
      "r412"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement input using rate at which policyholder begins withdrawal of benefit relative to maximum allowable under insurance contract.",
        "label": "Measurement Input, Withdrawal Rate [Member]",
        "terseLabel": "Measurement Input, Withdrawal Rate [Member]"
       }
      }
     },
     "localname": "MeasurementInputWithdrawalRateMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueQuantitativeInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MinimumGuaranteesPolicy": {
     "auth_ref": [
      "r117",
      "r645"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for minimum guarantees, including the nature of each guarantee given to contract holders under long-duration contracts, and the methods of determining the amounts of the guarantees reflected as liabilities in the balance sheet or disclosed.",
        "label": "Minimum Guarantees, Policy [Policy Text Block]",
        "terseLabel": "Minimum Guarantees, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "MinimumGuaranteesPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_MinorityInterest": {
     "auth_ref": [
      "r33",
      "r489",
      "r541"
     ],
     "calculation": {
      "http://www.brighthousefinancial.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",
        "verboseLabel": "Noncontrolling interests"
       }
      }
     },
     "localname": "MinorityInterest",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_MinorityInterestPeriodIncreaseDecrease": {
     "auth_ref": [
      "r337"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period.",
        "label": "Noncontrolling Interest, Period Increase (Decrease)",
        "terseLabel": "Change in noncontrolling interests"
       }
      }
     },
     "localname": "MinorityInterestPeriodIncreaseDecrease",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_MoneyMarketFundsMember": {
     "auth_ref": [
      "r285"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fund that invests in short-term money-market instruments, for example, but not limited to, commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and other highly liquid securities.",
        "label": "Money Market Funds [Member]",
        "verboseLabel": "Money Market"
       }
      }
     },
     "localname": "MoneyMarketFundsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MortgageLoansOnRealEstateCommercialAndConsumerNet": {
     "auth_ref": [
      "r547"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 3.0,
       "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",
        "terseLabel": "Mortgage loans, net",
        "verboseLabel": "Mortgage loans (net of valuation allowances of $64 and $56, respectively)"
       }
      }
     },
     "localname": "MortgageLoansOnRealEstateCommercialAndConsumerNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_MortgagesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A loan to finance the purchase of real estate where the lender has a lien on the property as collateral for the loan.",
        "label": "Mortgages [Member]",
        "terseLabel": "Mortgage loans"
       }
      }
     },
     "localname": "MortgagesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MovementInGuaranteedBenefitLiabilityGrossRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Movement in Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross [Roll Forward]",
        "verboseLabel": "Movement In Guaranteed Benefit Liability Gross Rollforward"
       }
      }
     },
     "localname": "MovementInGuaranteedBenefitLiabilityGrossRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue": {
     "auth_ref": [
      "r646"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Value of the general accounts corresponding to the specified product, guarantee type and subset of the guarantee.",
        "label": "Net Amount at Risk by Product and Guarantee, General Account Value",
        "verboseLabel": "Total account value (3)"
       }
      }
     },
     "localname": "NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetAmountAtRiskByProductAndGuaranteeLineItems": {
     "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": "Net Amount at Risk by Product and Guarantee [Line Items]"
       }
      }
     },
     "localname": "NetAmountAtRiskByProductAndGuaranteeLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk": {
     "auth_ref": [
      "r523",
      "r652"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Net amount at risk, representing the guaranteed benefit in excess of the current account balance corresponding to the specified product, guarantee type and subset of the guarantee.",
        "label": "Net Amount at Risk by Product and Guarantee, Net Amount at Risk",
        "terseLabel": "Net amount at risk (6)",
        "verboseLabel": "Net amount at risk"
       }
      }
     },
     "localname": "NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetAmountAtRiskByProductAndGuaranteeSeparateAccountValue": {
     "auth_ref": [
      "r523",
      "r643"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Value of the separate accounts corresponding to the specified product, guarantee type and subset of the guarantee.",
        "label": "Net Amount at Risk by Product and Guarantee, Separate Account Value",
        "verboseLabel": "Separate account value"
       }
      }
     },
     "localname": "NetAmountAtRiskByProductAndGuaranteeSeparateAccountValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetAmountAtRiskByProductAndGuaranteeTable": {
     "auth_ref": [
      "r523",
      "r646"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "For contracts with guaranteed benefits in excess of the current account balance, sets forth the amounts of such excesses (the net amounts at risk) and other pertinent information by type of guarantee by type of insurance product), as of the most recent balance sheet date.",
        "label": "Net Amount at Risk, by Product and Guarantee [Table]",
        "terseLabel": "Net Amount at Risk, by Product and Guarantee [Table]"
       }
      }
     },
     "localname": "NetAmountAtRiskByProductAndGuaranteeTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetAmountAtRiskByProductAndGuaranteeWeightedAverageAttainedAge1": {
     "auth_ref": [
      "r523",
      "r644"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average attained age of policyholders or contract holders in the specified guarantee type and subset of guarantee class, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age",
        "terseLabel": "Average attained age of policyholders",
        "verboseLabel": "Average attained age of contract holders"
       }
      }
     },
     "localname": "NetAmountAtRiskByProductAndGuaranteeWeightedAverageAttainedAge1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivities": {
     "auth_ref": [
      "r102"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Net Cash Provided by (Used in) Financing Activities [Abstract]",
        "terseLabel": "Cash flows from financing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivities": {
     "auth_ref": [
      "r102"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "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 provided by (used in) investing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInInvestingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Net Cash Provided by (Used in) Investing Activities [Abstract]",
        "terseLabel": "Cash flows from investing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivities": {
     "auth_ref": [
      "r102",
      "r105",
      "r108"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.",
        "label": "Net Cash Provided by (Used in) Operating Activities",
        "terseLabel": "Net cash provided by (used in) operating activities",
        "totalLabel": "Net cash provided by (used in) operating activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInOperatingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Net Cash Provided by (Used in) Operating Activities [Abstract]",
        "verboseLabel": "Cash flows from operating activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetIncomeLoss": {
     "auth_ref": [
      "r63",
      "r66",
      "r74",
      "r108",
      "r147",
      "r504",
      "r564"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "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 (Loss) Attributable to Parent",
        "totalLabel": "Net income (loss) attributable to parent"
       }
      }
     },
     "localname": "NetIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetIncomeLossAttributableToNoncontrollingInterest": {
     "auth_ref": [
      "r63",
      "r66",
      "r343",
      "r354"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of Net Income (Loss) attributable to noncontrolling interest.",
        "label": "Net Income (Loss) Attributable to Noncontrolling Interest",
        "terseLabel": "Less: Net income (loss) attributable to noncontrolling interests",
        "verboseLabel": "Net Income (Loss) Attributable to Noncontrolling Interest"
       }
      }
     },
     "localname": "NetIncomeLossAttributableToNoncontrollingInterest",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic": {
     "auth_ref": [
      "r140",
      "r146"
     ],
     "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",
        "terseLabel": "Net income (loss)",
        "verboseLabel": "Net income (loss) attributable to Brighthouse Life Insurance Company"
       }
      }
     },
     "localname": "NetIncomeLossAvailableToCommonStockholdersBasic",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest": {
     "auth_ref": [
      "r273",
      "r343",
      "r344"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome": {
       "order": 1.0,
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after income tax of income (loss) including the portion attributable to nonredeemable noncontrolling interest. Excludes the portion attributable to redeemable noncontrolling interest recognized as temporary equity.",
        "label": "Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest",
        "verboseLabel": "Net income (loss)"
       }
      }
     },
     "localname": "NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetInvestmentIncome": {
     "auth_ref": [
      "r565"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 5.0,
       "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",
        "verboseLabel": "Net investment income"
       }
      }
     },
     "localname": "NetInvestmentIncome",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NewAccountingPronouncementMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "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": "Adjustments for New Accounting Pronouncement [Member]",
        "terseLabel": "Adjustments for New Accounting Pronouncement [Member]",
        "verboseLabel": "Change Due To Cumulative Effect, Net of Income Tax"
       }
      }
     },
     "localname": "NewAccountingPronouncementMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1": {
     "auth_ref": [
      "r138",
      "r141"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.",
        "label": "New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets",
        "terseLabel": "New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets"
       }
      }
     },
     "localname": "NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable": {
     "auth_ref": [
      "r139",
      "r141"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails"
     ],
     "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": "New Accounting Pronouncements, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "NewAccountingPronouncementsPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_NoncontrollingInterestMember": {
     "auth_ref": [
      "r336"
     ],
     "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": "Noncontrolling Interests"
       }
      }
     },
     "localname": "NoncontrollingInterestMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NondesignatedMember": {
     "auth_ref": [
      "r367"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Derivative instrument not designated as hedging instrument under Generally Accepted Accounting Principles (GAAP).",
        "label": "Not Designated as Hedging Instrument [Member]",
        "terseLabel": "Derivatives Not Designated or Not Qualifying as hedging Instruments"
       }
      }
     },
     "localname": "NondesignatedMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesDerivativesDerivativesPertainingToHedgedItemsDetails",
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NonparticipatingLifeInsurancePolicyMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contract providing death benefits that do not entitle the policyholder to a portion of earnings or surplus through policy dividends.",
        "label": "Nonparticipating Life Insurance Contract [Member]",
        "terseLabel": "Nonparticipating Life Insurance Policies"
       }
      }
     },
     "localname": "NonparticipatingLifeInsurancePolicyMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NonperformingFinancingReceivableMember": {
     "auth_ref": [
      "r176",
      "r218"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Category status of financial instruments in which payments are past due in accordance with the terms of the contract. Financial instruments include, but are not limited to, financing receivables, loans, debt, and investments.",
        "label": "Nonperforming Financial Instruments [Member]",
        "terseLabel": "Nonperforming"
       }
      }
     },
     "localname": "NonperformingFinancingReceivableMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NonrecurringAdjustmentDomain": {
     "auth_ref": [
      "r334"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails"
     ],
     "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]",
        "verboseLabel": "Non-redeemable preferred stock"
       }
      }
     },
     "localname": "NonredeemablePreferredStockMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NotesReceivableFairValueDisclosure": {
     "auth_ref": [
      "r31"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date.",
        "label": "Notes Receivable, Fair Value Disclosure",
        "terseLabel": "Estimated Fair Value of Recorded Investment"
       }
      }
     },
     "localname": "NotesReceivableFairValueDisclosure",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NotesReceivableGross": {
     "auth_ref": [
      "r217"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before allowance for credit loss, of financing receivable.",
        "label": "Financing Receivable, before Allowance for Credit Loss",
        "terseLabel": "Carrying value",
        "verboseLabel": "Recorded Investment"
       }
      }
     },
     "localname": "NotesReceivableGross",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "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 segments",
        "verboseLabel": "Number of segments"
       }
      }
     },
     "localname": "NumberOfReportableSegments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationNarrativeDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_ObligationToReturnSecuritiesReceivedAsCollateral": {
     "auth_ref": [
      "r557"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 5.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The fair value of collateral received by the entity associated with securities borrowed that must be returned if the counterparty fulfills its obligations. It appears on the balance sheet as a liability and has a corresponding asset that appears on the balance sheet called Securities Received as Collateral.",
        "label": "Obligation to Return Securities Received as Collateral",
        "terseLabel": "Payables for collateral under securities loaned and other transactions"
       }
      }
     },
     "localname": "ObligationToReturnSecuritiesReceivedAsCollateral",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OffsettingAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Offsetting [Abstract]"
       }
      }
     },
     "localname": "OffsettingAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_OffsettingDerivativeAssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Offsetting Derivative Assets [Abstract]"
       }
      }
     },
     "localname": "OffsettingDerivativeAssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OffsettingDerivativeLiabilitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Offsetting Derivative Liabilities [Abstract]"
       }
      }
     },
     "localname": "OffsettingDerivativeLiabilitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesEstimatedFairValueOfDerivativesAssetsAndLiabilitiesAfterMasterNettingAgreementsAndCashCollateralDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingExpenses": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_BenefitsLossesAndExpenses",
       "weight": 1.0
      },
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.",
        "label": "Operating Expenses",
        "terseLabel": "Operating Expenses",
        "totalLabel": "Total other expenses",
        "verboseLabel": "Other expenses"
       }
      }
     },
     "localname": "OperatingExpenses",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingExpensesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Operating Expenses [Abstract]",
        "terseLabel": "Expenses [Abstract]"
       }
      }
     },
     "localname": "OperatingExpensesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingIncomeLoss": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The net result for the period of deducting operating expenses from operating revenues.",
        "label": "Operating Income (Loss)",
        "verboseLabel": "Adjusted earnings"
       }
      }
     },
     "localname": "OperatingIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLossCarryforwards": {
     "auth_ref": [
      "r320"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.",
        "label": "Operating Loss Carryforwards",
        "terseLabel": "Operating Loss Carryforwards"
       }
      }
     },
     "localname": "OperatingLossCarryforwards",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetOperatingLossCarryforwardsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLossCarryforwardsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Operating Loss Carryforwards [Line Items]",
        "terseLabel": "Operating Loss Carryforwards [Line Items]"
       }
      }
     },
     "localname": "OperatingLossCarryforwardsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetOperatingLossCarryforwardsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingLossCarryforwardsTable": {
     "auth_ref": [
      "r321"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule reflecting pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.",
        "label": "Operating Loss Carryforwards [Table]",
        "terseLabel": "Operating Loss Carryforwards [Table]"
       }
      }
     },
     "localname": "OperatingLossCarryforwardsTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetOperatingLossCarryforwardsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingSegmentsMember": {
     "auth_ref": [
      "r160",
      "r170"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Identifies 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": "Operating Segments [Member]",
        "terseLabel": "Operating Segments"
       }
      }
     },
     "localname": "OperatingSegmentsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OptionIndexedToIssuersEquityEquityTable": {
     "auth_ref": [
      "r271",
      "r405",
      "r406",
      "r407"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Different types of options indexed to an issuer's equity along with the different attributes of those options.",
        "label": "Option Indexed to Issuer's Equity, Equity [Table]",
        "terseLabel": "Option Indexed to Issuer's Equity, Equity [Table]"
       }
      }
     },
     "localname": "OptionIndexedToIssuersEquityEquityTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OptionIndexedToIssuersEquityLineItems": {
     "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": "Option Indexed to Issuer's Equity [Line Items]",
        "terseLabel": "Option Indexed to Issuer's Equity [Line Items]"
       }
      }
     },
     "localname": "OptionIndexedToIssuersEquityLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Organization, Consolidation and Presentation of Financial Statements [Abstract]"
       }
      }
     },
     "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock": {
     "auth_ref": [
      "r137",
      "r145",
      "r156",
      "r358"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for the general note to the financial statements for the reporting entity which may include, descriptions of the basis of presentation, business description, significant accounting policies, consolidations, reclassifications, new pronouncements not yet adopted and changes in accounting principles.",
        "label": "Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]",
        "terseLabel": "Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]"
       }
      }
     },
     "localname": "OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_OriginationOfNotesReceivableFromRelatedParties": {
     "auth_ref": [
      "r91"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 11.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow for a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.",
        "label": "Origination of Notes Receivable from Related Parties",
        "negatedTerseLabel": "Issuance of loan to affiliate"
       }
      }
     },
     "localname": "OriginationOfNotesReceivableFromRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherAssets": {
     "auth_ref": [
      "r6",
      "r483",
      "r533"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 7.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of assets classified as other.",
        "label": "Other Assets",
        "terseLabel": "Other Assets",
        "verboseLabel": "Other assets"
       }
      }
     },
     "localname": "OtherAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTaxAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments and Tax [Abstract]",
        "verboseLabel": "Components of net unrealized investment gains (losses) included in accumulated other comprehensive loss"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTaxAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax": {
     "auth_ref": [
      "r53",
      "r54",
      "r57"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome": {
       "order": 1.0,
       "parentTag": "us-gaap_OtherComprehensiveIncomeLossBeforeTax",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before tax, 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, Adjustment, before Tax",
        "terseLabel": "Change in gross unrealized losses of securities in an unrealized loss position",
        "verboseLabel": "Unrealized investment gains (losses), net of related offsets"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax": {
     "auth_ref": [
      "r60"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before tax and reclassification adjustments of other comprehensive income (loss).",
        "label": "Other Comprehensive Income (Loss), before Reclassifications, before Tax",
        "terseLabel": "OCI before reclassifications"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax": {
     "auth_ref": [
      "r60",
      "r70"
     ],
     "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",
        "verboseLabel": "AOCI before reclassifications, net of income tax"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax": {
     "auth_ref": [
      "r58",
      "r329"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of tax expense (benefit) allocated to other comprehensive income (loss) before reclassification adjustment from accumulated other comprehensive income (loss).",
        "label": "Other Comprehensive Income (Loss) before Reclassifications, Tax",
        "terseLabel": "Deferred income tax benefit (expense)"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossBeforeReclassificationsTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossBeforeTax": {
     "auth_ref": [
      "r208"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome": {
       "order": 1.0,
       "parentTag": "bhl_OtherComprehensiveIncomeLossNetofTaxnotincludingchangeinaccountingprinciple",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before tax, after reclassification adjustments of other comprehensive income (loss).",
        "label": "Other Comprehensive Income (Loss), before Tax",
        "totalLabel": "Other comprehensive income (loss), before income tax"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossBeforeTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Other Comprehensive Income (Loss), before Tax [Abstract]",
        "verboseLabel": "Other comprehensive income (loss):"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax": {
     "auth_ref": [
      "r52"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome": {
       "order": 2.0,
       "parentTag": "us-gaap_OtherComprehensiveIncomeLossBeforeTax",
       "weight": 1.0
      }
     },
     "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).",
        "label": "Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax",
        "verboseLabel": "Unrealized gains (losses) on derivatives"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax": {
     "auth_ref": [
      "r50",
      "r57",
      "r433",
      "r435"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome": {
       "order": 3.0,
       "parentTag": "us-gaap_OtherComprehensiveIncomeLossBeforeTax",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before tax, after 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, before Tax",
        "verboseLabel": "Foreign currency translation adjustments"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossNetOfTax": {
     "auth_ref": [
      "r64",
      "r67",
      "r70",
      "r274"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after tax and reclassification adjustments of other comprehensive income (loss).",
        "label": "Other Comprehensive Income (Loss), Net of Tax",
        "terseLabel": "Other comprehensive income (loss), net of income tax"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossTax": {
     "auth_ref": [
      "r58",
      "r329",
      "r331"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome": {
       "order": 2.0,
       "parentTag": "bhl_OtherComprehensiveIncomeLossNetofTaxnotincludingchangeinaccountingprinciple",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of tax expense (benefit) allocated to other comprehensive income (loss).",
        "label": "Other Comprehensive Income (Loss), Tax",
        "negatedLabel": "Income tax (expense) benefit related to items of other comprehensive income (loss)"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfComprehensiveIncome"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherExpensesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Other Expenses [Abstract]",
        "terseLabel": "Other Expenses [Abstract]"
       }
      }
     },
     "localname": "OtherExpensesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherGeneralAndAdministrativeExpense": {
     "auth_ref": [
      "r82"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails": {
       "order": 9.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of general and administrative expense classified as other.",
        "label": "Other General and Administrative Expense",
        "terseLabel": "Other General and Administrative Expense"
       }
      }
     },
     "localname": "OtherGeneralAndAdministrativeExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherIncome": {
     "auth_ref": [
      "r573"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 6.0,
       "parentTag": "us-gaap_Revenues",
       "weight": 1.0
      },
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of revenue and income classified as other.",
        "label": "Other Income",
        "terseLabel": "Other adjustments to net income (loss)",
        "totalLabel": "Net other revenues",
        "verboseLabel": "Other revenues"
       }
      }
     },
     "localname": "OtherIncome",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherIncomeAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Component of Operating Income [Abstract]",
        "verboseLabel": "Other revenues:"
       }
      }
     },
     "localname": "OtherIncomeAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherIncomeAndExpensesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Other Income and Expenses [Abstract]"
       }
      }
     },
     "localname": "OtherIncomeAndExpensesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock": {
     "auth_ref": [
      "r284",
      "r294"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions.",
        "label": "Other Income and Other Expense Disclosure [Text Block]",
        "verboseLabel": "Other Expenses"
       }
      }
     },
     "localname": "OtherIncomeAndOtherExpenseDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpenses"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_OtherInsuranceProductLineMember": {
     "auth_ref": [
      "r620"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contract providing insurance coverage, classified as other.",
        "label": "Insurance, Other [Member]",
        "terseLabel": "Insurance, Other [Member]"
       }
      }
     },
     "localname": "OtherInsuranceProductLineMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OtherInvestments": {
     "auth_ref": [
      "r24",
      "r550"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 7.0,
       "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 invested assets, at estimated fair value",
        "verboseLabel": "Other invested assets, principally at estimated fair value"
       }
      }
     },
     "localname": "OtherInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "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"
       }
      }
     },
     "localname": "OtherInvestmentsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OtherLiabilities": {
     "auth_ref": [
      "r498"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 8.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of liabilities classified as other.",
        "label": "Other Liabilities",
        "terseLabel": "Other liabilities",
        "verboseLabel": "Other liabilities"
       }
      }
     },
     "localname": "OtherLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherLiabilitiesFairValueDisclosure": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value portion of other liabilities.",
        "label": "Other Liabilities, Fair Value Disclosure",
        "verboseLabel": "Other liabilities"
       }
      }
     },
     "localname": "OtherLiabilitiesFairValueDisclosure",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherOperatingActivitiesCashFlowStatement": {
     "auth_ref": [],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 15.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Other cash or noncash adjustments to reconcile net income to cash provided by (used in) operating activities that are not separately disclosed in the statement of cash flows (for example,  cash received or cash paid during the current period for miscellaneous operating activities, net change during the reporting period in other assets or other liabilities).",
        "label": "Other Operating Activities, Cash Flow Statement",
        "terseLabel": "Other, net"
       }
      }
     },
     "localname": "OtherOperatingActivitiesCashFlowStatement",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherPolicyholderFunds": {
     "auth_ref": [
      "r556"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount due to policyholders for funds held that are returnable under the terms of insurance contracts, classified as other.",
        "label": "Other Policyholder Funds",
        "terseLabel": "Other Policyholder Funds",
        "verboseLabel": "Other policy-related balances"
       }
      }
     },
     "localname": "OtherPolicyholderFunds",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1": {
     "auth_ref": [
      "r113",
      "r114",
      "r115"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The value of the noncash (or part noncash) consideration received in a 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 a transaction not resulting in cash receipts or cash payments in the period.",
        "label": "Other Significant Noncash Transaction, Value of Consideration Received",
        "terseLabel": "Value of invested assets received from issuance of long-term debt"
       }
      }
     },
     "localname": "OtherSignificantNoncashTransactionValueOfConsiderationReceived1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ParentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Portion of equity, or net assets, in the consolidated entity attributable, directly or indirectly, to the parent. Excludes noncontrolling interests.",
        "label": "Parent [Member]",
        "terseLabel": "Brighthouse Life Insurance Company Stockholder's Equity"
       }
      }
     },
     "localname": "ParentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ParticipatingLifeInsurancePolicyMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contract providing death benefits that entitle the policyholder to a portion of earnings or surplus through policy dividends.",
        "label": "Participating Life Insurance Contract [Member]",
        "terseLabel": "Participating Life Insurance Contract [Member]"
       }
      }
     },
     "localname": "ParticipatingLifeInsurancePolicyMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ParticipatingPoliciesAsPercentageOfGrossInsuranceInForce": {
     "auth_ref": [
      "r555",
      "r622"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of participating insurance contract to insurance contracts in force.",
        "label": "Participating Insurance, Percentage of Gross Insurance in Force",
        "terseLabel": "Participating Insurance, Percentage of Gross Insurance in Force"
       }
      }
     },
     "localname": "ParticipatingPoliciesAsPercentageOfGrossInsuranceInForce",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_PaymentsForProceedsFromDerivativeInstrumentFinancingActivities": {
     "auth_ref": [
      "r133"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 9.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The net cash outflow or inflow from derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments.",
        "label": "Payments for (Proceeds from) Derivative Instrument, Financing Activities",
        "negatedLabel": "Financing element on certain derivative instruments and other derivative related transactions, net"
       }
      }
     },
     "localname": "PaymentsForProceedsFromDerivativeInstrumentFinancingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsForProceedsFromPolicyLoans": {
     "auth_ref": [
      "r133"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 13.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Net amount paid or received by the entity associated with issuance or collection of loans made to policy holders, principally secured by the benefits under the policy.",
        "label": "Payments for (Proceeds from) Policy Loans",
        "negatedLabel": "Net change in policy loans"
       }
      }
     },
     "localname": "PaymentsForProceedsFromPolicyLoans",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsForProceedsFromShortTermInvestments": {
     "auth_ref": [
      "r88",
      "r91",
      "r110"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 14.0,
       "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": "Net change in short-term investments"
       }
      }
     },
     "localname": "PaymentsForProceedsFromShortTermInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsOfDividends": {
     "auth_ref": [
      "r95"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.",
        "label": "Payments of Dividends",
        "terseLabel": "Payments of Dividends"
       }
      }
     },
     "localname": "PaymentsOfDividends",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt": {
     "auth_ref": [
      "r87",
      "r91",
      "r186"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 5.0,
       "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": "Purchases of fixed maturity securities"
       }
      }
     },
     "localname": "PaymentsToAcquireAvailableForSaleSecuritiesDebt",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesEquity": {
     "auth_ref": [
      "r92",
      "r186"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 6.0,
       "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": "Purchases of equity securities"
       }
      }
     },
     "localname": "PaymentsToAcquireAvailableForSaleSecuritiesEquity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquireLimitedPartnershipInterests": {
     "auth_ref": [
      "r92"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cash outflow related to the acquisition or continued holding of limited partnership interests held for investment purposes.",
        "label": "Payments to Acquire Limited Partnership Interests",
        "negatedLabel": "Purchases of limited partnerships and limited liability companies"
       }
      }
     },
     "localname": "PaymentsToAcquireLimitedPartnershipInterests",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquireMortgageNotesReceivable": {
     "auth_ref": [
      "r91"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 7.0,
       "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": "Purchases of mortgage loans"
       }
      }
     },
     "localname": "PaymentsToAcquireMortgageNotesReceivable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PensionAndOtherPostretirementPlansPolicy": {
     "auth_ref": [
      "r117",
      "r288",
      "r290",
      "r291",
      "r292",
      "r293"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for pension and other postretirement benefit plans. This accounting policy may address (1) the types of plans sponsored by the entity, and the benefits provided by each plan (2) groups that participate in (or are covered by) each plan (3) how plan assets, liabilities and expenses are measured, including the use of any actuaries and (4) significant assumptions used by the entity to value plan assets and liabilities and how such assumptions are derived.",
        "label": "Pension and Other Postretirement Plans, Policy [Policy Text Block]",
        "terseLabel": "Pension and Other Postretirement Plans, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "PensionAndOtherPostretirementPlansPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PerformingFinancingReceivableMember": {
     "auth_ref": [
      "r176",
      "r218"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Category status of financial instruments in which payments are received or paid on a timely basis in accordance with the terms of the contract. Financial instruments include, but are not limited to, financing receivables, loans, debt instruments, and investments.",
        "label": "Performing Financial Instruments [Member]",
        "terseLabel": "Performing"
       }
      }
     },
     "localname": "PerformingFinancingReceivableMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PolicyLoansMember": {
     "auth_ref": [
      "r654"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Loan issued by an insurance company, collateralized by the cash value of the borrower's life insurance policy.",
        "label": "Policy Loans [Member]",
        "terseLabel": "Policy loans",
        "verboseLabel": "Policy loans"
       }
      }
     },
     "localname": "PolicyLoansMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PolicyholderAccountsPolicy": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for contracts reported in separate accounts, including the extent and terms of minimum guarantees, basis of presentation for separate account assets and liabilities and related separate account activity, the liability valuation method and assumptions used in valuing each type of policyholder and contract holder account maintained by the entity.",
        "label": "Policyholder Accounts, Policy [Policy Text Block]",
        "terseLabel": "Policyholder Accounts, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "PolicyholderAccountsPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PolicyholderBenefitsAndClaimsIncurredAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Policyholder Benefits and Claims Incurred [Abstract]",
        "verboseLabel": "Policyholder benefits and claims:"
       }
      }
     },
     "localname": "PolicyholderBenefitsAndClaimsIncurredAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PolicyholderBenefitsAndClaimsIncurredGross": {
     "auth_ref": [
      "r574"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_PolicyholderBenefitsAndClaimsIncurredNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before effect of policies assumed or ceded, of expense related to provision for policy benefits and costs incurred.",
        "label": "Policyholder Benefits and Claims Incurred, Direct",
        "verboseLabel": "Direct policyholder benefits and claims"
       }
      }
     },
     "localname": "PolicyholderBenefitsAndClaimsIncurredGross",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PolicyholderBenefitsAndClaimsIncurredNet": {
     "auth_ref": [
      "r521",
      "r574"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 4.0,
       "parentTag": "us-gaap_BenefitsLossesAndExpenses",
       "weight": 1.0
      },
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred.",
        "label": "Policyholder Benefits and Claims Incurred, Net",
        "terseLabel": "Net policyholder benefits and claims",
        "totalLabel": "Net policyholder benefits and claims",
        "verboseLabel": "Policyholder benefits and claims"
       }
      }
     },
     "localname": "PolicyholderBenefitsAndClaimsIncurredNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PolicyholderContractDeposits": {
     "auth_ref": [
      "r605"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of liability due to policyholder for deposit held under long-duration contract issued by insurance entity.",
        "label": "Policyholder Contract Deposit",
        "terseLabel": "Policyholder account balances",
        "verboseLabel": "Policyholder account balances"
       }
      }
     },
     "localname": "PolicyholderContractDeposits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PortionAtFairValueFairValueDisclosureMember": {
     "auth_ref": [
      "r427"
     ],
     "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 [Member]"
       }
      }
     },
     "localname": "PortionAtFairValueFairValueDisclosureMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PreferredStockMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Preferred shares may provide a preferential dividend to the dividend on common stock and may take precedence over common stock in the event of a liquidation. Preferred shares typically represent an ownership interest in the company.",
        "label": "Preferred Stock [Member]",
        "terseLabel": "Preferred Stock [Member]"
       }
      }
     },
     "localname": "PreferredStockMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PremiumsAndOtherReceivablesNet": {
     "auth_ref": [
      "r561"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying amount as of the balance sheet date, 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, reinsurance and other receivables"
       }
      }
     },
     "localname": "PremiumsAndOtherReceivablesNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnBalanceSheetDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PremiumsEarnedNet": {
     "auth_ref": [
      "r501",
      "r563",
      "r584",
      "r638"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 3.0,
       "parentTag": "us-gaap_Revenues",
       "weight": 1.0
      },
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "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",
        "terseLabel": "Net premiums",
        "totalLabel": "Net premiums",
        "verboseLabel": "Premiums"
       }
      }
     },
     "localname": "PremiumsEarnedNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PremiumsPercentageAssumedToNet": {
     "auth_ref": [
      "r585"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of assumed premium earned to premium earned after effects of reinsurance, as disclosed in supplementary reinsurance information.",
        "label": "SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net",
        "terseLabel": "Premiums, Percentage Assumed to Net"
       }
      }
     },
     "localname": "PremiumsPercentageAssumedToNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedReinsuranceDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_PresentValueOfFutureInsuranceProfitsAmortizationExpense1": {
     "auth_ref": [
      "r107",
      "r238",
      "r524"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense (reversal of expense) for present value of future profits of insurance contract acquired in business combination.",
        "label": "Present Value of Future Insurance Profits, Amortization Expense",
        "negatedLabel": "Total amortization of VOBA"
       }
      }
     },
     "localname": "PresentValueOfFutureInsuranceProfitsAmortizationExpense1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PresentValueOfFutureInsuranceProfitsAmortizationExpenseRealizedGainLoss": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense (reversal of amortization expense) for future profits of insurance contract acquired in business combination from realized investment gain (loss).",
        "label": "Present Value of Future Insurance Profits, Amortization Expense, Realized Gain (Loss)",
        "negatedLabel": "Net investment gains (losses) of VOBA and net derivative gains (losses) of VOBA"
       }
      }
     },
     "localname": "PresentValueOfFutureInsuranceProfitsAmortizationExpenseRealizedGainLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearFive": {
     "auth_ref": [
      "r239",
      "r662"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense expected to be recognized during fifth fiscal year following latest fiscal year for present value of future profits of insurance contract acquired in business combination.",
        "label": "Present Value of Future Insurance Profits, Amortization Expense, Year Five",
        "verboseLabel": "VOBA 2024"
       }
      }
     },
     "localname": "PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearFour": {
     "auth_ref": [
      "r239",
      "r662"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense expected to be recognized during fourth fiscal year following latest fiscal year for present value of future profits of insurance contract acquired in business combination.",
        "label": "Present Value of Future Insurance Profits, Amortization Expense, Year Four",
        "verboseLabel": "VOBA 2023"
       }
      }
     },
     "localname": "PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearFour",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearOne": {
     "auth_ref": [
      "r239",
      "r662"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense expected to be recognized during next fiscal year following latest fiscal year for present value of future profits of insurance contract acquired in business combination.",
        "label": "Present Value of Future Insurance Profits, Amortization Expense, Year One",
        "verboseLabel": "VOBA 2020"
       }
      }
     },
     "localname": "PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearOne",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearThree": {
     "auth_ref": [
      "r239",
      "r662"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense expected to be recognized during third fiscal year following latest fiscal year for present value of future profits of insurance contract acquired in business combination.",
        "label": "Present Value of Future Insurance Profits, Amortization Expense, Year Three",
        "verboseLabel": "VOBA 2022"
       }
      }
     },
     "localname": "PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearThree",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearTwo": {
     "auth_ref": [
      "r239",
      "r662"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense expected to be recognized during second fiscal year following latest fiscal year for present value of future profits of insurance contract acquired in business combination.",
        "label": "Present Value of Future Insurance Profits, Amortization Expense, Year Two",
        "verboseLabel": "VOBA 2021"
       }
      }
     },
     "localname": "PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PresentValueOfFutureInsuranceProfitsTableTextBlock": {
     "auth_ref": [
      "r525"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of present value of future profits of insurance contract acquired in business combination.",
        "label": "Present Value of Future Insurance Profits [Table Text Block]",
        "verboseLabel": "Schedule of Deferred Policy Acquisition Costs and Value of Business Acquired"
       }
      }
     },
     "localname": "PresentValueOfFutureInsuranceProfitsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PriorPeriodReclassificationAdjustment": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of a reclassification adjustment made to prior period financial statement amounts.",
        "label": "Prior Period Reclassification Adjustment",
        "terseLabel": "Prior Period Reclassification Adjustment"
       }
      }
     },
     "localname": "PriorPeriodReclassificationAdjustment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromAnnuitiesAndInvestmentCertificates": {
     "auth_ref": [
      "r93"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash inflow from an insurance contract under which the policy holder make a lump sum payment or a series of payments in exchange for periodic payments to the policyholder beginning immediately or at some future date.",
        "label": "Proceeds from Annuities and Investment Certificates",
        "verboseLabel": "Policyholder account balances: Deposits"
       }
      }
     },
     "localname": "ProceedsFromAnnuitiesAndInvestmentCertificates",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromContributionsFromParent": {
     "auth_ref": [
      "r94"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 7.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash inflow from parent as a source of financing that is recorded as additional paid in capital.",
        "label": "Proceeds from Contributions from Parent",
        "terseLabel": "Capital contribution"
       }
      }
     },
     "localname": "ProceedsFromContributionsFromParent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows",
      "http://www.brighthousefinancial.com/role/EquityCapitalTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital": {
     "auth_ref": [
      "r89",
      "r101"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.",
        "label": "Proceeds from Equity Method Investment, Distribution, Return of Capital",
        "terseLabel": "Returns of capital and dividends from subsidiaries"
       }
      }
     },
     "localname": "ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromIssuanceOfLongTermDebt": {
     "auth_ref": [
      "r93"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 4.0,
       "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": "Long-term debt issued",
        "verboseLabel": "Cash proceeds from issuance of long-term debt"
       }
      }
     },
     "localname": "ProceedsFromIssuanceOfLongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromLimitedPartnershipInvestments": {
     "auth_ref": [
      "r89"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cash inflow received as distributions, returns of capital, or sale proceeds from partnership interests held for investment purposes.",
        "label": "Proceeds from Limited Partnership Investments",
        "verboseLabel": "Sales, maturities and repayments of limited partnerships and limited liability companies"
       }
      }
     },
     "localname": "ProceedsFromLimitedPartnershipInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromPaymentsForOtherFinancingActivities": {
     "auth_ref": [
      "r94",
      "r97",
      "r133"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 10.0,
       "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, net"
       }
      }
     },
     "localname": "ProceedsFromPaymentsForOtherFinancingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromSaleAndCollectionOfMortgageNotesReceivable": {
     "auth_ref": [
      "r88"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "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",
        "verboseLabel": "Sales, maturities and repayments of mortgage loans"
       }
      }
     },
     "localname": "ProceedsFromSaleAndCollectionOfMortgageNotesReceivable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities": {
     "auth_ref": [
      "r87",
      "r88",
      "r186"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow from sale, 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 Sale and Maturity of Debt Securities, Available-for-sale",
        "verboseLabel": "Sales, maturities and repayments of fixed maturity securities"
       }
      }
     },
     "localname": "ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesEquity": {
     "auth_ref": [
      "r89",
      "r186"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash inflow associated with the sale of equity securities classified as available-for-sale securities.",
        "label": "Proceeds from Sale of Available-for-sale Securities, Equity",
        "verboseLabel": "Sales, maturities and repayments of equity securities"
       }
      }
     },
     "localname": "ProceedsFromSaleOfAvailableForSaleSecuritiesEquity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromSaleOfEquityMethodInvestments": {
     "auth_ref": [
      "r89"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.",
        "label": "Proceeds from Sale of Equity Method Investments",
        "terseLabel": "Proceeds from sale of equity method investments"
       }
      }
     },
     "localname": "ProceedsFromSaleOfEquityMethodInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromSaleOfInsuranceInvestments": {
     "auth_ref": [
      "r90"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash inflow associated with the sale of insurance policy investment assets during the period.",
        "label": "Proceeds from Sale of Insurance Investments",
        "verboseLabel": "Proceeds"
       }
      }
     },
     "localname": "ProceedsFromSaleOfInsuranceInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSalesOrDisposalsOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProfessionalFees": {
     "auth_ref": [
      "r666",
      "r668"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.",
        "label": "Professional Fees",
        "terseLabel": "Professional services"
       }
      }
     },
     "localname": "ProfessionalFees",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherExpensesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProfitLoss": {
     "auth_ref": [
      "r63",
      "r66",
      "r100",
      "r163",
      "r171",
      "r338",
      "r342",
      "r344",
      "r354",
      "r355"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      },
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0
      }
     },
     "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",
        "netLabel": "Net income (loss) available to Brighthouse",
        "terseLabel": "Post-tax adjusted earnings",
        "totalLabel": "Net income (loss)",
        "verboseLabel": "Net income (loss)"
       }
      }
     },
     "localname": "ProfitLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PublicUtilityBondsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item represents investments by the reporting entity in fixed maturity securities (bonds) issued by a public utility.",
        "label": "Public Utility, Bonds [Member]",
        "verboseLabel": "Public utilities"
       }
      }
     },
     "localname": "PublicUtilityBondsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PublicUtilityEquitiesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This item represents investments by the reporting entity in equity securities issued by a public utility.",
        "label": "Public Utility, Equities [Member]",
        "terseLabel": "Public utilities"
       }
      }
     },
     "localname": "PublicUtilityEquitiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RealEstateInvestmentMember": {
     "auth_ref": [
      "r675"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This element represents direct equity investments in real estate projects (Land, buildings and improvements owned for income production and capital accretion potential) and certain loans accounted for as real estate investments. For loans accounted for as real estate investments, the entity (lender) has virtually the same risks and rewards as those of owners or joint venture participants. Such arrangements are treated as if the entity actually has an ownership interest in the property. In such arrangements, the entity (lender) participates in expected residual profits, which may be in the form of an equity kicker or a higher than usual effective interest rate. At the outset and during the construction and development of the property, the borrower generally has little or no equity in the property and the entity's (lender's) only source of repayment is the property. The entity (lender) generally (a) agrees to provide substantially all funds to acquire, develop, and construct the property, (b) funds the commitment or origination fees or both, and (c) funds interest during the development and construction of the property.",
        "label": "Real Estate Investment [Member]",
        "terseLabel": "Limited partnerships and LLCs"
       }
      }
     },
     "localname": "RealEstateInvestmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RealEstateInvestments": {
     "auth_ref": [
      "r548"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 5.0,
       "parentTag": "us-gaap_Investments",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of real estate investments, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; (7) other real estate investments; (8) real estate joint ventures; and (9) unconsolidated real estate and other joint ventures not separately presented.",
        "label": "Real Estate Investments, Net",
        "terseLabel": "Limited partnerships and limited liability companies"
       }
      }
     },
     "localname": "RealEstateInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RealEstateLoanMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Loan to finance the purchase of real estate, including but not limited to, land or building.",
        "label": "Real Estate Loan [Member]",
        "terseLabel": "Mortgage Loans"
       }
      }
     },
     "localname": "RealEstateLoanMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RealizedInvestmentGainsLosses": {
     "auth_ref": [
      "r572"
     ],
     "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)",
        "verboseLabel": "Net investment gains (losses)"
       }
      }
     },
     "localname": "RealizedInvestmentGainsLosses",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSalesOrDisposalsOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReceivablesFairValueDisclosure": {
     "auth_ref": [
      "r21",
      "r35",
      "r495",
      "r544"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value portion of receivables, including, but not limited to, trade account receivables, note receivables, and loan receivables.",
        "label": "Receivables, Fair Value Disclosure",
        "verboseLabel": "Premiums, reinsurance and other receivables"
       }
      }
     },
     "localname": "ReceivablesFairValueDisclosure",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax": {
     "auth_ref": [
      "r60",
      "r62"
     ],
     "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",
        "negatedLabel": "Amounts reclassified from AOCI"
       }
      }
     },
     "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax": {
     "auth_ref": [
      "r60",
      "r62",
      "r70"
     ],
     "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 AOCI, net of income tax"
       }
      }
     },
     "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReclassificationFromAociCurrentPeriodTax": {
     "auth_ref": [
      "r58",
      "r61",
      "r329"
     ],
     "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",
        "negatedLabel": "Deferred income tax benefit (expense)"
       }
      }
     },
     "localname": "ReclassificationFromAociCurrentPeriodTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "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]",
        "verboseLabel": "Reclassification out of Accumulated Other Comprehensive Income (Loss) [Table Text Block]"
       }
      }
     },
     "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTextBlock": {
     "auth_ref": [
      "r166",
      "r168"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of all significant reconciling items in the reconciliation of total revenues from reportable segments to the entity's consolidated revenues.",
        "label": "Reconciliation of Revenue from Segments to Consolidated [Table Text Block]",
        "terseLabel": "Reconciliation of Revenue from Segments to Consolidated"
       }
      }
     },
     "localname": "ReconciliationOfRevenueFromSegmentsToConsolidatedTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]",
        "verboseLabel": "Reconciliation of Unrecognized Tax Benefits"
       }
      }
     },
     "localname": "ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RedeemablePreferredStockMember": {
     "auth_ref": [
      "r3",
      "r272"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Description of type or class of redeemable preferred stock. For instance, cumulative preferred stock, noncumulative preferred stock, convertible or series.",
        "label": "Redeemable Preferred Stock [Member]",
        "verboseLabel": "Redeemable preferred stock"
       }
      }
     },
     "localname": "RedeemablePreferredStockMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ReinsuranceAccountingPolicy": {
     "auth_ref": [
      "r117",
      "r521",
      "r522",
      "r554",
      "r640",
      "r641"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of reinsurance accounting policy, for example, but not limited to, description of the methodologies and assumptions underlying determination of reinsurance recoverables, reinsurance payables and retention policy.",
        "label": "Reinsurance Accounting Policy [Policy Text Block]",
        "terseLabel": "Reinsurance Accounting Policy [Policy Text Block]"
       }
      }
     },
     "localname": "ReinsuranceAccountingPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ReinsuranceCostsAndRecoveriesNet": {
     "auth_ref": [
      "r521"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of recovery (expense) related to provision for policy benefits and costs incurred for policies assumed and ceded.",
        "label": "Policyholder Benefits and Claims Incurred, Assumed and Ceded",
        "terseLabel": "Policyholder Benefits and Claims Incurred, Assumed and Ceded"
       }
      }
     },
     "localname": "ReinsuranceCostsAndRecoveriesNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReinsuranceDisclosuresAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Reinsurance Disclosures [Abstract]",
        "terseLabel": "Reinsurance Disclosures [Abstract]"
       }
      }
     },
     "localname": "ReinsuranceDisclosuresAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed": {
     "auth_ref": [
      "r521"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_PolicyholderBenefitsAndClaimsIncurredNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of policy benefits and costs incurred for policies assumed.",
        "label": "Policyholder Benefits and Claims Incurred, Assumed",
        "verboseLabel": "Reinsurance assumed"
       }
      }
     },
     "localname": "ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded": {
     "auth_ref": [
      "r521"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_PolicyholderBenefitsAndClaimsIncurredNet",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of reduction of provision for policy benefits and costs incurred for policies ceded.",
        "label": "Policyholder Benefits and Claims Incurred, Ceded",
        "negatedLabel": "Reinsurance ceded"
       }
      }
     },
     "localname": "ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfReinsuranceOnEarningsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReinsurancePolicyDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Coverage retained or reinsured.",
        "label": "Reinsurance Policy [Domain]"
       }
      }
     },
     "localname": "ReinsurancePolicyDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ReinsurancePolicyTypeAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type, risk category or other classification of reinsurance coverage.",
        "label": "Reinsurance Policy, Type [Axis]"
       }
      }
     },
     "localname": "ReinsurancePolicyTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "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",
        "negatedTerseLabel": "Reinsurance Recoverables, Gross"
       }
      }
     },
     "localname": "ReinsuranceRecoverablesGross",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReinsuranceRetentionPolicyAmountRetained": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Stated amount that is the upper retention limit per entity policy.",
        "label": "Reinsurance Retention Policy, Amount Retained",
        "verboseLabel": "Retention amount"
       }
      }
     },
     "localname": "ReinsuranceRetentionPolicyAmountRetained",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReinsuranceRetentionPolicyExcessRetentionPercentage": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of risk reinsured in excess of stated retention per entity policy.",
        "label": "Reinsurance Retention Policy, Excess Retention, Percentage",
        "terseLabel": "Reinsurance Retention Policy, Excess Retention, Percentage"
       }
      }
     },
     "localname": "ReinsuranceRetentionPolicyExcessRetentionPercentage",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_ReinsuranceRetentionPolicyLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Reinsurance Retention Policy [Line Items]"
       }
      }
     },
     "localname": "ReinsuranceRetentionPolicyLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ReinsuranceRetentionPolicyReinsuredRiskPercentage": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of risk reinsured on insurance products per entity policy.",
        "label": "Reinsurance Retention Policy, Reinsured Risk, Percentage",
        "terseLabel": "Reinsurance Retention Policy, Reinsured Risk, Percentage",
        "verboseLabel": "Reinsured risk percentage"
       }
      }
     },
     "localname": "ReinsuranceRetentionPolicyReinsuredRiskPercentage",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_ReinsuranceRetentionPolicyTable": {
     "auth_ref": [
      "r521"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about reinsurance retention policy.",
        "label": "Reinsurance Retention Policy [Table]"
       }
      }
     },
     "localname": "ReinsuranceRetentionPolicyTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ReinsuranceNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ReinsuranceTextBlock": {
     "auth_ref": [
      "r665"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure pertaining to the existence, magnitude and information about insurance that has been ceded to or assumed from another insurance company, including the methodologies and assumptions used in determining recorded amounts.",
        "label": "Reinsurance [Text Block]",
        "verboseLabel": "Reinsurance"
       }
      }
     },
     "localname": "ReinsuranceTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/Reinsurance"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RelatedPartyDomain": {
     "auth_ref": [
      "r450"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Related parties include affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.",
        "label": "Related Party [Domain]",
        "terseLabel": "Related Party [Domain]"
       }
      }
     },
     "localname": "RelatedPartyDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceTables",
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RelatedPartyTransactionAmountsOfTransaction": {
     "auth_ref": [
      "r442",
      "r446",
      "r447"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of transactions with related party during the financial reporting period.",
        "label": "Related Party Transaction, Amounts of Transaction",
        "terseLabel": "Related Party Transaction, Amounts of Transaction"
       }
      }
     },
     "localname": "RelatedPartyTransactionAmountsOfTransaction",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RelatedPartyTransactionAxis": {
     "auth_ref": [
      "r287",
      "r444",
      "r446"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of related party transaction.",
        "label": "Related Party Transaction [Axis]",
        "terseLabel": "Related Party Transaction [Axis]"
       }
      }
     },
     "localname": "RelatedPartyTransactionAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Transaction between related party.",
        "label": "Related Party Transaction [Domain]",
        "terseLabel": "Related Party Transaction [Domain]"
       }
      }
     },
     "localname": "RelatedPartyTransactionDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RelatedPartyTransactionDueFromToRelatedPartyAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Related Party Transaction, Due from (to) Related Party [Abstract]"
       }
      }
     },
     "localname": "RelatedPartyTransactionDueFromToRelatedPartyAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty": {
     "auth_ref": [
      "r442"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.",
        "label": "Related Party Transaction, Expenses from Transactions with Related Party",
        "terseLabel": "Related Party Transaction, Expenses from Transactions with Related Party"
       }
      }
     },
     "localname": "RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RelatedPartyTransactionLineItems": {
     "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": "Related Party Transaction [Line Items]",
        "terseLabel": "Related Party Transaction [Line Items]"
       }
      }
     },
     "localname": "RelatedPartyTransactionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of selling, general and administrative expenses resulting from transactions, excluding transactions that are eliminated in consolidated or combined financial statements, with related party.",
        "label": "Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party",
        "terseLabel": "Related party investment administrative service charges",
        "verboseLabel": "Related Party Expenses"
       }
      }
     },
     "localname": "RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RelatedPartyTransactionsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Related Party Transactions [Abstract]"
       }
      }
     },
     "localname": "RelatedPartyTransactionsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsByRelatedPartyAxis": {
     "auth_ref": [
      "r287",
      "r444",
      "r446",
      "r469",
      "r470",
      "r471",
      "r472",
      "r473",
      "r474",
      "r475",
      "r476",
      "r477",
      "r478",
      "r479",
      "r480"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of related party. Related parties include, but not limited to, affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.",
        "label": "Related Party [Axis]",
        "terseLabel": "Related Party [Axis]",
        "verboseLabel": "Related Party Transactions, by Related Party [Axis]"
       }
      }
     },
     "localname": "RelatedPartyTransactionsByRelatedPartyAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/LongTermDebtNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceEffectsOfAffiliatedReinsuranceOnStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceTables",
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsDisclosureTextBlock": {
     "auth_ref": [
      "r450"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
        "label": "Related Party Transactions Disclosure [Text Block]",
        "verboseLabel": "Related Party Transactions"
       }
      }
     },
     "localname": "RelatedPartyTransactionsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactions"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RepaymentsOfAnnuitiesAndInvestmentCertificates": {
     "auth_ref": [
      "r96"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow for an insurance contract under which the policy holder make a lump sum payment or a series of payments in exchange for periodic payments to the policyholder beginning immediately or at some future date.",
        "label": "Repayments of Annuities and Investment Certificates",
        "negatedLabel": "Policyholder account balances: Withdrawals"
       }
      }
     },
     "localname": "RepaymentsOfAnnuitiesAndInvestmentCertificates",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RepaymentsOfLongTermDebt": {
     "auth_ref": [
      "r96"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.",
        "label": "Repayments of Long-term Debt",
        "negatedLabel": "Long-term debt repaid"
       }
      }
     },
     "localname": "RepaymentsOfLongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ResidentialMortgageBackedSecuritiesMember": {
     "auth_ref": [
      "r188",
      "r285"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Securities collateralized by residential real estate mortgage loans.",
        "label": "Residential Mortgage Backed Securities [Member]",
        "verboseLabel": "RMBS"
       }
      }
     },
     "localname": "ResidentialMortgageBackedSecuritiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ResidentialPortfolioSegmentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Portfolio segment of the company's total financing receivables related to residential financing receivables.",
        "label": "Residential Portfolio Segment [Member]",
        "terseLabel": "Residential"
       }
      }
     },
     "localname": "ResidentialPortfolioSegmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansByPortfolioSegmentDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RestructuringCostAndReserveAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of restructuring cost.",
        "label": "Restructuring Type [Axis]",
        "terseLabel": "Restructuring Type [Axis]"
       }
      }
     },
     "localname": "RestructuringCostAndReserveAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/OrganizationalChangesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RestructuringCostAndReserveLineItems": {
     "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": "Restructuring Cost and Reserve [Line Items]",
        "terseLabel": "Restructuring Cost and Reserve [Line Items]"
       }
      }
     },
     "localname": "RestructuringCostAndReserveLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OrganizationalChangesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RetainedEarningsAccumulatedDeficit": {
     "auth_ref": [
      "r17",
      "r279",
      "r539"
     ],
     "calculation": {
      "http://www.brighthousefinancial.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 (Accumulated Deficit)",
        "verboseLabel": "Retained earnings (deficit)"
       }
      }
     },
     "localname": "RetainedEarningsAccumulatedDeficit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets"
     ],
     "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 (Deficit)"
       }
      }
     },
     "localname": "RetainedEarningsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "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/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax": {
     "auth_ref": [
      "r281",
      "r282"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, including 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, Including Assessed Tax",
        "terseLabel": "Revenue from Contract with Customer, Including Assessed Tax"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerIncludingAssessedTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherRevenuesNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenueFromRelatedParties": {
     "auth_ref": [
      "r79",
      "r667"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.",
        "label": "Revenue from Related Parties",
        "terseLabel": "Revenue from Related Parties"
       }
      }
     },
     "localname": "RevenueFromRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_Revenues": {
     "auth_ref": [
      "r72",
      "r159",
      "r160",
      "r169"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).",
        "label": "Revenues",
        "terseLabel": "Total revenues",
        "totalLabel": "Total revenues"
       }
      }
     },
     "localname": "Revenues",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfOperationsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenuesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Revenues [Abstract]",
        "verboseLabel": "Revenues"
       }
      }
     },
     "localname": "RevenuesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SalesInducementsToContractHoldersPolicy": {
     "auth_ref": [
      "r117",
      "r596"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for sales inducements, including the yield enhancement features, such as interest credits and bonuses, given to motivate purchases of insurance products, and description of the nature of the costs deferred and the method for amortizing such deferred costs.",
        "label": "Sales Inducements to Contract Holders, Policy [Policy Text Block]",
        "terseLabel": "Sales Inducements to Contract Holders, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "SalesInducementsToContractHoldersPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock": {
     "auth_ref": [
      "r32"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.",
        "label": "Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]",
        "verboseLabel": "Mortgage Loans by Portfolio Segment"
       }
      }
     },
     "localname": "ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock": {
     "auth_ref": [
      "r60"
     ],
     "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": "Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]"
       }
      }
     },
     "localname": "ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsPurchasedCreditImpairedInvestmentsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSalesOrDisposalsOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfAvailableForSaleSecuritiesTable": {
     "auth_ref": [
      "r193",
      "r198",
      "r201",
      "r202",
      "r203",
      "r204",
      "r508",
      "r513"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsPurchasedCreditImpairedInvestmentsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSalesOrDisposalsOfFixedMaturitySecuritiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock": {
     "auth_ref": [
      "r377"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of gain (loss) on derivative and nonderivative instruments designated and qualifying as cash flow hedge recorded in accumulated other comprehensive income (AOCI) and reclassified into earnings.",
        "label": "Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]",
        "terseLabel": "Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]"
       }
      }
     },
     "localname": "ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock": {
     "auth_ref": [
      "r326"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.",
        "label": "Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]",
        "verboseLabel": "Provision for income tax from continuing operations"
       }
      }
     },
     "localname": "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfCreditDerivativesTable": {
     "auth_ref": [
      "r389",
      "r394",
      "r395"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule of credit derivatives, including information about each credit derivative, or each group of similar credit derivatives, including (a) the nature of the credit derivative - its term, how it arose, the events or circumstances that would require the seller to perform under the credit derivative, and the current status of the payment/performance risk of the credit derivative; (b) the maximum potential amount of future payments (undiscounted) the seller could be required to make under the credit derivative; (c) the current fair value of the credit derivative; and (d) the nature of any recourse provisions under the credit derivative, and any assets held either as collateral or by third parties.",
        "label": "Schedule of Credit Derivatives [Table]",
        "terseLabel": "Schedule of Credit Derivatives [Table]"
       }
      }
     },
     "localname": "ScheduleOfCreditDerivativesTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditDerivativesDetails",
      "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfDebtTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.",
        "label": "Schedule of Debt [Table Text Block]",
        "terseLabel": "Schedule of Long-term Debt"
       }
      }
     },
     "localname": "ScheduleOfDebtTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/LongTermDebtTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock": {
     "auth_ref": [
      "r318"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.",
        "label": "Schedule of Deferred Tax Assets and Liabilities [Table Text Block]",
        "verboseLabel": "Components of deferred tax assets and liabilities"
       }
      }
     },
     "localname": "ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock": {
     "auth_ref": [
      "r370",
      "r378",
      "r386"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.",
        "label": "Derivative Instruments, Gain (Loss) [Table Text Block]",
        "verboseLabel": "Derivative Instruments, Gain (Loss)"
       }
      }
     },
     "localname": "ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock": {
     "auth_ref": [
      "r376"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.",
        "label": "Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]",
        "verboseLabel": "Schedule of Derivatives Instruments Statements of Financial Performance, Fair Value [Table Text Block]"
       }
      }
     },
     "localname": "ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDerivativeInstrumentsTextBlock": {
     "auth_ref": [
      "r131",
      "r361",
      "r363",
      "r364",
      "r367",
      "r368",
      "r376",
      "r378",
      "r396",
      "r400"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.",
        "label": "Schedule of Derivative Instruments [Table Text Block]",
        "verboseLabel": "Schedule of Derivative Instruments"
       }
      }
     },
     "localname": "ScheduleOfDerivativeInstrumentsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock": {
     "auth_ref": [
      "r302"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.",
        "label": "Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]",
        "verboseLabel": "Income tax for continuing operations effective rate reconciliation"
       }
      }
     },
     "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock": {
     "auth_ref": [
      "r172"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information.",
        "label": "Revenue from External Customers by Products and Services [Table Text Block]",
        "terseLabel": "Premiums, Universal Life and Investment-Type Product Policy Fees and Other Revenues by Product Groups"
       }
      }
     },
     "localname": "ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock": {
     "auth_ref": [
      "r409",
      "r410"
     ],
     "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]",
        "verboseLabel": "Recurring Fair Value Measurements"
       }
      }
     },
     "localname": "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/FairValueTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue": {
     "auth_ref": [
      "r523",
      "r654"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value amount of the specified investment category of assets maintained in separate accounts as of the balance sheet date.",
        "label": "Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value",
        "verboseLabel": "Fund Groupings"
       }
      }
     },
     "localname": "ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Fair Value, Separate Account Investment [Line Items]",
        "terseLabel": "Fair Value, Separate Account Investment [Line Items]"
       }
      }
     },
     "localname": "ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTable": {
     "auth_ref": [
      "r654",
      "r659"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about fair value of asset supporting separate account.",
        "label": "Fair Value, Separate Account Investment [Table]",
        "terseLabel": "Fair Value, Separate Account Investment [Table]"
       }
      }
     },
     "localname": "ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceFundGroupingsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTextBlock": {
     "auth_ref": [
      "r523",
      "r654",
      "r659"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of fair value of asset supporting separate account.",
        "label": "Fair Value, Separate Account Investment [Table Text Block]",
        "verboseLabel": "Fund Groupings"
       }
      }
     },
     "localname": "ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable": {
     "auth_ref": [
      "r429",
      "r430"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule detailing the information required and determined to be disclosed regarding the fair value of financial assets and financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.",
        "label": "Schedule of Fair Value, Off-balance Sheet Risks [Table]",
        "terseLabel": "Schedule of Fair Value, Off-balance Sheet Risks [Table]"
       }
      }
     },
     "localname": "ScheduleOfFairValueOffBalanceSheetRisksTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesCommitmentsNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfFinancialInstrumentsOwnedAndPledgedAsCollateralTextBlock": {
     "auth_ref": [
      "r462",
      "r466"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of financial instruments held by the entity for its own account for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions. Description may include equity, fixed income, debt or other securities.",
        "label": "Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]",
        "verboseLabel": "Invested Assets on Deposit, Held in Trust and Pledged as Collateral"
       }
      }
     },
     "localname": "ScheduleOfFinancialInstrumentsOwnedAndPledgedAsCollateralTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable": {
     "auth_ref": [
      "r218",
      "r224"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about credit quality indicator for financing receivable.",
        "label": "Financing Receivable, Credit Quality Indicator [Table]",
        "terseLabel": "Financing Receivable, Credit Quality Indicator [Table]"
       }
      }
     },
     "localname": "ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsCreditQualityOfMortgageLoansDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfFinancingReceivablesPastDueTable": {
     "auth_ref": [
      "r215",
      "r225"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about aging analysis for financing receivable.",
        "label": "Financing Receivable, Past Due [Table]",
        "terseLabel": "Financing Receivable, Past Due [Table]"
       }
      }
     },
     "localname": "ScheduleOfFinancingReceivablesPastDueTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsMortgageLoansNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable": {
     "auth_ref": [
      "r234",
      "r236"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesEstimatedFutureAmortizationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock": {
     "auth_ref": [
      "r234",
      "r236"
     ],
     "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]",
        "verboseLabel": "Value of Distribution Agreements"
       }
      }
     },
     "localname": "ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfGuaranteeObligationsTable": {
     "auth_ref": [
      "r264"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure about the type or nature of guarantees, for example performance, indemnification, payment and other guarantees, and related information such as term, origin and purpose, triggering event, maximum exposure, and carrying value. Represents the guarantor's disclosures which include the information about each guarantee, or each group of similar guarantees, even if the likelihood of the guarantor's need to make any payments under the guarantee is remote. This excludes disclosures for product warranties.",
        "label": "Schedule of Guarantor Obligations [Table]",
        "terseLabel": "Schedule of Guarantor Obligations [Table]"
       }
      }
     },
     "localname": "ScheduleOfGuaranteeObligationsTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesGuaranteesNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems": {
     "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": "Net Investment Income [Line Items]",
        "terseLabel": "Net Investment Income [Line Items]"
       }
      }
     },
     "localname": "ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable": {
     "auth_ref": [
      "r83",
      "r85",
      "r86",
      "r571"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about investment income, including, but not limited to, interest and dividend income and amortization of discount (premium) derived from debt and equity securities. Excludes realized and unrealized gain (loss) on investments.",
        "label": "Investment Income [Table]",
        "terseLabel": "Investment Income [Table]"
       }
      }
     },
     "localname": "ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsNetInvestmentIncomeNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfMinimumGuaranteedBenefitLiabilitiesTextBlock": {
     "auth_ref": [
      "r523",
      "r646"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of minimum guaranteed benefits to policyholders and contract holders, such as guaranteed minimum death benefit, guaranteed minimum income benefit, and guaranteed annuitization benefits, discloses the amount of liability reported for additional insurance benefits, annuitization benefits and other minimum guarantees, by type of benefit, for the most recent balance sheet date and the incurred and paid amounts for periods presented for traditional and nontraditional products.",
        "label": "Schedule of Minimum Guaranteed Benefit Liabilities [Table Text Block]",
        "verboseLabel": "Liabilities for Guarantees"
       }
      }
     },
     "localname": "ScheduleOfMinimumGuaranteedBenefitLiabilitiesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfNetAmountOfRiskByProductAndGuaranteeTextBlock": {
     "auth_ref": [
      "r523",
      "r646"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the guaranteed benefits in excess of the current account balance, quantifies such excesses (the net amounts at risk) and includes other relevant, pertinent information as of the most recent balance sheet date by product type.",
        "label": "Schedule of Net Amount of Risk by Product and Guarantee [Table Text Block]",
        "verboseLabel": "Guarantees related to Annuity, Universal and Variable Life Contracts"
       }
      }
     },
     "localname": "ScheduleOfNetAmountOfRiskByProductAndGuaranteeTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock": {
     "auth_ref": [
      "r81"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of each detailed component of other operating costs and expenses that are applicable to sales and revenues, but not included in the cost of sales in the income statement.",
        "label": "Schedule of Other Operating Cost and Expense, by Component [Table Text Block]",
        "verboseLabel": "Other Expenses"
       }
      }
     },
     "localname": "ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OtherExpensesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable": {
     "auth_ref": [
      "r121",
      "r444",
      "r446",
      "r447",
      "r448",
      "r449"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule of quantitative and qualitative information pertaining to related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
        "label": "Schedule of Related Party Transactions, by Related Party [Table]",
        "terseLabel": "Schedule of Related Party Transactions, by Related Party [Table]"
       }
      }
     },
     "localname": "ScheduleOfRelatedPartyTransactionsByRelatedPartyTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/RelatedPartyTransactionRelatedPartyTransactionNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfRestructuringAndRelatedCostsTable": {
     "auth_ref": [
      "r245",
      "r246",
      "r247"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Table presenting the description of the restructuring costs, such as the expected cost; the costs incurred during the period; the cumulative costs incurred as of the balance sheet date; the income statement caption within which the restructuring charges recognized for the period are included; and the amount of and periodic changes to an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost by type of restructuring.",
        "label": "Schedule of Restructuring and Related Costs [Table]",
        "terseLabel": "Schedule of Restructuring and Related Costs [Table]"
       }
      }
     },
     "localname": "ScheduleOfRestructuringAndRelatedCostsTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/OrganizationalChangesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfSecuritiesFinancingTransactionsTextBlock": {
     "auth_ref": [
      "r43",
      "r130",
      "r466"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of  securities financing transactions including resale and repurchase agreements, securities borrowed and lending transactions, securities received as collateral and obligations to return securities received as collateral.",
        "label": "Schedule of Securities Financing Transactions [Table Text Block]",
        "verboseLabel": "Securities Lending"
       }
      }
     },
     "localname": "ScheduleOfSecuritiesFinancingTransactionsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable": {
     "auth_ref": [
      "r158",
      "r163",
      "r165",
      "r167",
      "r232"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaBySegmentDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationPremiumsUniversalLifeAndInvestmentTypeProductPolicyFeesAndOtherRevenuesByMajorProductGroupDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock": {
     "auth_ref": [
      "r158",
      "r163",
      "r165",
      "r167",
      "r232"
     ],
     "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": "Segment Reporting Information, by Segment"
       }
      }
     },
     "localname": "ScheduleOfSegmentReportingInformationBySegmentTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SegmentInformationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock": {
     "auth_ref": [
      "r201"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).",
        "label": "Schedule of Unrealized Loss on Investments [Table Text Block]",
        "verboseLabel": "Continuous Gross Unrealized Losses for Fixed Maturity Securities AFS by Sector"
       }
      }
     },
     "localname": "ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfVariableInterestEntitiesTable": {
     "auth_ref": [
      "r347",
      "r349",
      "r350",
      "r351",
      "r352"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfVariableInterestEntitiesTextBlock": {
     "auth_ref": [
      "r347",
      "r349",
      "r350",
      "r351",
      "r352"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure 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 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 Text Block]",
        "verboseLabel": "Variable Interest Entities"
       }
      }
     },
     "localname": "ScheduleOfVariableInterestEntitiesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock": {
     "auth_ref": [
      "r236"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.",
        "label": "Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]",
        "verboseLabel": "Estimated Future Amortization Expense"
       }
      }
     },
     "localname": "ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SecuritiesFinancingTransactionAxis": {
     "auth_ref": [
      "r36",
      "r130",
      "r466"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of securities financing transactions, including, but not limited to those measured at fair value or cost.",
        "label": "Securities Financing Transaction [Axis]",
        "terseLabel": "Securities Financing Transaction [Axis]"
       }
      }
     },
     "localname": "SecuritiesFinancingTransactionAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SecuritiesFinancingTransactionCostMember": {
     "auth_ref": [
      "r466"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement at cost of security or securities involved in financing transaction.",
        "label": "Securities Financing Transaction, Cost [Member]",
        "terseLabel": "Amortized cost"
       }
      }
     },
     "localname": "SecuritiesFinancingTransactionCostMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SecuritiesFinancingTransactionFairValueMember": {
     "auth_ref": [
      "r466"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement at fair value of security or securities involved in financing transaction.",
        "label": "Securities Financing Transaction, Fair Value [Member]",
        "terseLabel": "Estimated fair value"
       }
      }
     },
     "localname": "SecuritiesFinancingTransactionFairValueMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SecuritiesFinancingTransactionLineItems": {
     "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": "Securities Financing Transaction [Line Items]",
        "terseLabel": "Securities Financing Transaction [Line Items]"
       }
      }
     },
     "localname": "SecuritiesFinancingTransactionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SecuritiesFinancingTransactionTable": {
     "auth_ref": [
      "r466"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule, as of the balance sheet date, of security financing transactions by type, the aggregate value of securities financing transactions by type and aggregate acquisition price by type of security financing transaction.",
        "label": "Securities Financing Transaction [Table]",
        "terseLabel": "Securities Financing Transaction [Table]"
       }
      }
     },
     "localname": "SecuritiesFinancingTransactionTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SecuritiesFinancingTransactionTypeDomain": {
     "auth_ref": [
      "r466"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Measurement of financing transaction securities held.",
        "label": "Securities Financing Transaction [Domain]",
        "terseLabel": "Securities Financing Transaction [Domain]"
       }
      }
     },
     "localname": "SecuritiesFinancingTransactionTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SecuritiesInvestmentMember": {
     "auth_ref": [
      "r669",
      "r670"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member categorizes all investments in securities to segregate them from other than security investments.",
        "label": "Securities Investment [Member]",
        "verboseLabel": "Securities Investment"
       }
      }
     },
     "localname": "SecuritiesInvestmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SecuritiesLoaned": {
     "auth_ref": [
      "r39",
      "r44",
      "r463"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after the effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset.",
        "label": "Securities Loaned",
        "verboseLabel": "Securities on loan"
       }
      }
     },
     "localname": "SecuritiesLoaned",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SecuritiesLoanedNotSubjectToMasterNettingArrangement": {
     "auth_ref": [
      "r40",
      "r47"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of securities loaned to entities in exchange for collateral, not subject to a master netting arrangement.",
        "label": "Securities Loaned, Not Subject to Master Netting Arrangement",
        "terseLabel": "Cash collateral on deposit from counterparties"
       }
      }
     },
     "localname": "SecuritiesLoanedNotSubjectToMasterNettingArrangement",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SecuritiesReceivedAsCollateral": {
     "auth_ref": [
      "r454",
      "r464"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The carrying value as of the balance sheet date of the assets received as collateral against securities loaned to other broker-dealers. Borrowers of securities generally are required to provide collateral to the lenders of securities, commonly cash but sometimes other securities or standby letters of credit, with a value slightly higher than that of the securities borrowed. In instances where the entity is permitted to sell or re-pledge these securities, the entity reports the fair value of the collateral received and the related obligation to return the collateral as a liability.",
        "label": "Securities Received as Collateral",
        "verboseLabel": "Security collateral received from counterparties"
       }
      }
     },
     "localname": "SecuritiesReceivedAsCollateral",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale": {
     "auth_ref": [
      "r455",
      "r456"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Reflects, by transferred financial asset type, the amount of sales proceeds in excess of or deficient from the sum of the carrying amounts of transferred financial assets plus transaction costs, including those transactions in which the seller/transferor has continuing involvement with the financial assets that have been transferred.",
        "label": "Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale",
        "terseLabel": "Net investment gains (losses) recognized on invested assets transferred"
       }
      }
     },
     "localname": "SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsRelatedPartyInvestmentTransactionsNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaBySegmentDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SegmentReportingAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Segment Reporting [Abstract]"
       }
      }
     },
     "localname": "SegmentReportingAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_SegmentReportingDisclosureTextBlock": {
     "auth_ref": [
      "r173"
     ],
     "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]",
        "verboseLabel": "Segment Information"
       }
      }
     },
     "localname": "SegmentReportingDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaBySegmentDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationPremiumsUniversalLifeAndInvestmentTypeProductPolicyFeesAndOtherRevenuesByMajorProductGroupDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SeparateAccountAssets": {
     "auth_ref": [
      "r534",
      "r642",
      "r654",
      "r659"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 8.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of asset at fair value held for benefit of separate account policyholder.",
        "label": "Separate Account Asset",
        "terseLabel": "Separate account assets",
        "verboseLabel": "Separate account assets"
       }
      }
     },
     "localname": "SeparateAccountAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SeparateAccountsLiability": {
     "auth_ref": [
      "r538",
      "r642",
      "r656",
      "r657",
      "r660"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 9.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of liability for variable contract in which all or portion of contract holder's funds is allocated to specific separate account and supported by assets held in separate account.",
        "label": "Separate Account, Liability",
        "terseLabel": "Separate account liabilities",
        "verboseLabel": "Separate account liabilities"
       }
      }
     },
     "localname": "SeparateAccountsLiability",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/FairValueFinancialInstrumentsCarriedAtOtherThanFairValueDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ShortTermInvestments": {
     "auth_ref": [
      "r8",
      "r491",
      "r492",
      "r494",
      "r532"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 6.0,
       "parentTag": "us-gaap_Investments",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.",
        "label": "Short-term Investments",
        "verboseLabel": "Short-term investments, principally at estimated fair value"
       }
      }
     },
     "localname": "ShortTermInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ShortTermInvestmentsMember": {
     "auth_ref": [
      "r675"
     ],
     "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",
        "verboseLabel": "Short-term investments"
       }
      }
     },
     "localname": "ShortTermInvestmentsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SpinoffMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Creation of an independent entity from an existing entity through divestiture, for example, but not limited to, sale or distribution of new shares.",
        "label": "Spinoff [Member]",
        "terseLabel": "Spinoff [Member]"
       }
      }
     },
     "localname": "SpinoffMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/OrganizationalChangesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_StatementBusinessSegmentsAxis": {
     "auth_ref": [
      "r0",
      "r163",
      "r232",
      "r243",
      "r244",
      "r248",
      "r606"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by business segments.",
        "label": "Segments [Axis]",
        "terseLabel": "Segments [Axis]"
       }
      }
     },
     "localname": "StatementBusinessSegmentsAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails",
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaBySegmentDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationAssetsAndLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationOperatingResultsDetails",
      "http://www.brighthousefinancial.com/role/SegmentInformationReconciliationOfOperatingRevenuesToTotalRevenuesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementEquityComponentsAxis": {
     "auth_ref": [
      "r30",
      "r274"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by component of equity.",
        "label": "Equity Components [Axis]",
        "terseLabel": "Equity Components [Axis]",
        "verboseLabel": "Equity Components [Axis]"
       }
      }
     },
     "localname": "StatementEquityComponentsAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/EquityDividendRestrictionsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails",
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherRevenuesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfCashFlowsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Statement of Cash Flows [Abstract]",
        "terseLabel": "Statement of Cash Flows [Abstract]"
       }
      }
     },
     "localname": "StatementOfCashFlowsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails"
     ],
     "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/2019-01-31",
     "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/2019-01-31",
     "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/2019-01-31",
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/IncomeTaxNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InsuranceInsuranceFuturePolicyBenefitsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsInvestedAssetsOnDepositHeldInTrustAndPledgedAsCollateralNarrativeDetails",
      "http://www.brighthousefinancial.com/role/OtherRevenuesAndOtherExpensesOtherRevenuesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/ReinsuranceRelatedPartyNarrativeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatutoryAccountingPracticesDisclosureTextBlock": {
     "auth_ref": [
      "r559",
      "r624",
      "r626",
      "r627",
      "r628",
      "r629"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of how the entity's reporting under GAAP as of the balance sheet date differs from the results based on prescribed and permitted accounting practices of the state or country of domicile in which a relevant statutory filing is made, or differences in results based on the National Association of Insurance Commissioners (NAIC) prescribed practices, or a combination thereof. Describes the accounting practices used and the related monetary effect on statutory surplus, net income, and risk-based capital. If an insurance enterprise's risk-based capital would have triggered a regulatory event had it not used a permitted practice, that fact is disclosed in the financial statements. Permitted statutory accounting practices include practices not prescribed but allowed by the domiciliary state insurance department regulatory authority.",
        "label": "Statutory Accounting Practices Disclosure [Table Text Block]",
        "verboseLabel": "Schedules of statutory net income, capital and surplus and reserve strengthening by subsidiary"
       }
      }
     },
     "localname": "StatutoryAccountingPracticesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_StatutoryAccountingPracticesLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Statutory Accounting Practices [Line Items]",
        "terseLabel": "Statutory Accounting Practices [Line Items]"
       }
      }
     },
     "localname": "StatutoryAccountingPracticesLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityCaptiveEquityAndIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityStatutoryCapitalAndSurplusDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryNetIncomeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatutoryAccountingPracticesPrescribedPracticeAmount": {
     "auth_ref": [
      "r625"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount as of the balance sheet date of each item listed to reconcile the differences resulting from applying state prescribed statutory accounting practices rather than statutory accounting practices prescribed by National Association of Insurance Commissioners.",
        "label": "Statutory Accounting Practices, Prescribed Practice, Amount",
        "terseLabel": "Statutory Accounting Practices, Prescribed Practice, Amount"
       }
      }
     },
     "localname": "StatutoryAccountingPracticesPrescribedPracticeAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityCaptiveEquityAndIncomeNarrativeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval": {
     "auth_ref": [
      "r124"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of dividends that can be declared or paid without approval of regulatory agency.",
        "label": "Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval",
        "terseLabel": "Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval"
       }
      }
     },
     "localname": "StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityDividendRestrictionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance": {
     "auth_ref": [
      "r540",
      "r623"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.",
        "label": "Statutory Accounting Practices, Statutory Capital and Surplus, Balance",
        "terseLabel": "Statutory Accounting Practices, Statutory Capital and Surplus, Balance"
       }
      }
     },
     "localname": "StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityCaptiveEquityAndIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityStatutoryCapitalAndSurplusDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount": {
     "auth_ref": [
      "r540"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators.",
        "label": "Statutory Accounting Practices, Statutory Net Income Amount",
        "terseLabel": "Statutory Accounting Practices, Statutory Net Income Amount",
        "verboseLabel": "Statutory net income (loss)"
       }
      }
     },
     "localname": "StatutoryAccountingPracticesStatutoryNetIncomeAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityCaptiveEquityAndIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryNetIncomeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StatutoryAccountingPracticesTable": {
     "auth_ref": [
      "r559",
      "r624",
      "r626",
      "r627",
      "r628",
      "r629"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Detail by state, country, or other jurisdiction of domicile in which financial statements are filed reflecting statutory capital and surplus, net income and the differences between financial reports which are in conformity with generally accepted accounting principles and the statutory financial statements which also use state permitted or prescribed accounting practices.",
        "label": "Statutory Accounting Practices [Table]",
        "terseLabel": "Statutory Accounting Practices [Table]"
       }
      }
     },
     "localname": "StatutoryAccountingPracticesTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/EquityEquityCaptiveEquityAndIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityEquityStatutoryCapitalAndSurplusDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryEquityIncomeNarrativeDetails",
      "http://www.brighthousefinancial.com/role/EquityStatutoryNetIncomeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StockOptionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contracts conveying rights, but not obligations, to buy or sell a specific quantity of stock at a specified price during a specified period (an American option) or at a specified date (a European option).",
        "label": "Equity Option [Member]",
        "terseLabel": "Equity index options"
       }
      }
     },
     "localname": "StockOptionMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_StockholdersEquity": {
     "auth_ref": [
      "r14",
      "r18",
      "r19",
      "r181"
     ],
     "calculation": {
      "http://www.brighthousefinancial.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",
        "terseLabel": "Total Brighthouse Life Insurance Company's stockholder's equity",
        "totalLabel": "Total Brighthouse Life Insurance Company's stockholder's equity"
       }
      }
     },
     "localname": "StockholdersEquity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Stockholders' Equity Attributable to Parent [Abstract]",
        "terseLabel": "Stockholders' Equity Attributable to Parent [Abstract]",
        "verboseLabel": "Equity"
       }
      }
     },
     "localname": "StockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedBalanceSheetsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest": {
     "auth_ref": [
      "r336",
      "r337",
      "r353"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets": {
       "order": 2.0,
       "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",
        "terseLabel": "Stockholder's Equity",
        "totalLabel": "Total equity"
       }
      }
     },
     "localname": "StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedBalanceSheets",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockholdersEquityNoteDisclosureTextBlock": {
     "auth_ref": [
      "r280"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.",
        "label": "Stockholders' Equity Note Disclosure [Text Block]",
        "verboseLabel": "Equity"
       }
      }
     },
     "localname": "StockholdersEquityNoteDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/Equity"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SubsequentEventLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.",
        "label": "Subsequent Event [Line Items]",
        "terseLabel": "Subsequent Event [Line Items]"
       }
      }
     },
     "localname": "SubsequentEventLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Identifies event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
        "label": "Subsequent Event [Member]",
        "terseLabel": "Subsequent Event"
       }
      }
     },
     "localname": "SubsequentEventMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SubsequentEventTable": {
     "auth_ref": [
      "r451"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Discloses pertinent information about one or more significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued.",
        "label": "Subsequent Event [Table]",
        "terseLabel": "Subsequent Event [Table]"
       }
      }
     },
     "localname": "SubsequentEventTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventTypeAxis": {
     "auth_ref": [
      "r451"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventTypeDomain": {
     "auth_ref": [
      "r451"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SubsequentEventsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SubsequentEventsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Subsequent Events [Abstract]"
       }
      }
     },
     "localname": "SubsequentEventsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventsTextBlock": {
     "auth_ref": [
      "r453"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.",
        "label": "Subsequent Events [Text Block]",
        "terseLabel": "Subsequent Events"
       }
      }
     },
     "localname": "SubsequentEventsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/SubsequentEvents"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SummaryOfIncomeTaxContingenciesTextBlock": {
     "auth_ref": [
      "r305",
      "r313",
      "r315"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.",
        "label": "Summary of Income Tax Contingencies [Table Text Block]",
        "verboseLabel": "Reconciliation of unrecognized tax benefits"
       }
      }
     },
     "localname": "SummaryOfIncomeTaxContingenciesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount": {
     "auth_ref": [
      "r678"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of investment held by insurance company, excluding investment in related party.",
        "label": "SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Amount",
        "terseLabel": "Amount at Which Shown on Balance Sheet"
       }
      }
     },
     "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost": {
     "auth_ref": [
      "r676"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cost of investment held by insurance company, excluding investment in related party.",
        "label": "SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Cost",
        "terseLabel": "Amortized Cost"
       }
      }
     },
     "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue": {
     "auth_ref": [
      "r677"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value of investment held by insurance company, excluding investment in related party.",
        "label": "SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Fair Value",
        "terseLabel": "Estimated Fair Value"
       }
      }
     },
     "localname": "SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SummaryOfOperatingLossCarryforwardsTextBlock": {
     "auth_ref": [
      "r321"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.",
        "label": "Summary of Operating Loss Carryforwards [Table Text Block]",
        "terseLabel": "Summary of Operating Loss Carryforwards [Table Text Block]"
       }
      }
     },
     "localname": "SummaryOfOperatingLossCarryforwardsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SummaryOfTaxCreditCarryforwardsTextBlock": {
     "auth_ref": [
      "r321"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of tax credit carryforwards available to reduce future taxable income, including amounts, expiration dates, limitations on use and the related deferred tax assets and valuation allowances.",
        "label": "Summary of Tax Credit Carryforwards [Table Text Block]",
        "terseLabel": "Summary of Tax Credit Carryforwards"
       }
      }
     },
     "localname": "SummaryOfTaxCreditCarryforwardsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SupplementalCashFlowInformationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Supplemental Cash Flow Information [Abstract]",
        "terseLabel": "Supplemental disclosures of cash flow information"
       }
      }
     },
     "localname": "SupplementalCashFlowInformationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense": {
     "auth_ref": [
      "r578"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of insurance benefit, claim, loss and settlement expenses incurred, as disclosed in supplementary insurance information.",
        "label": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses",
        "verboseLabel": "Policyholder Benefits and Claims and Interest Credited to Policyholder Account Balances"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome": {
     "auth_ref": [
      "r577"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of net investment income earned, disclosed in supplementary insurance information.",
        "label": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income",
        "verboseLabel": "Net Investment Income"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationNetInvestmentIncome",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense": {
     "auth_ref": [
      "r579"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of operating expense classified as other, disclosed in supplementary insurance information.",
        "label": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense",
        "terseLabel": "Other Expenses"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationOtherOperatingExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationIncomeStatementItemsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SupplementaryInsuranceInformationUnearnedPremiums": {
     "auth_ref": [
      "r576"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of premium not yet earned, disclosed in supplementary insurance information.",
        "label": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium",
        "terseLabel": "Unearned Premiums"
       }
      }
     },
     "localname": "SupplementaryInsuranceInformationUnearnedPremiums",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSupplementaryInsuranceInformationBalanceSheetItemsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TaxCreditCarryforwardAmount": {
     "auth_ref": [
      "r320"
     ],
     "calculation": {
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.",
        "label": "Tax Credit Carryforward, Amount",
        "terseLabel": "Tax credit carryforwards",
        "verboseLabel": "Tax credit carryforwards"
       }
      }
     },
     "localname": "TaxCreditCarryforwardAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxNetDeferredIncomeTaxAssetsAndLiabilitiesDetails",
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TaxCreditCarryforwardAxis": {
     "auth_ref": [
      "r321"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by specific tax credit related to an unused tax credit.",
        "label": "Tax Credit Carryforward [Axis]",
        "terseLabel": "Tax Credit Carryforward [Axis]"
       }
      }
     },
     "localname": "TaxCreditCarryforwardAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_TaxCreditCarryforwardLineItems": {
     "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": "Tax Credit Carryforward [Line Items]",
        "terseLabel": "Tax Credit Carryforward [Line Items]"
       }
      }
     },
     "localname": "TaxCreditCarryforwardLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_TaxCreditCarryforwardNameDomain": {
     "auth_ref": [
      "r321"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The name of the tax credit carryforward.",
        "label": "Tax Credit Carryforward, Name [Domain]",
        "terseLabel": "Tax Credit Carryforward, Name [Domain]"
       }
      }
     },
     "localname": "TaxCreditCarryforwardNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TaxCreditCarryforwardTable": {
     "auth_ref": [
      "r321"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A listing of tax credit carryforwards available to reduce future taxable income including descriptions, amounts, expiration dates, limitations on use and the related deferred tax assets and valuation allowances.",
        "label": "Tax Credit Carryforward [Table]",
        "terseLabel": "Tax Credit Carryforward [Table]"
       }
      }
     },
     "localname": "TaxCreditCarryforwardTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxTaxCreditCarryforwardsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_TransferOfInvestments": {
     "auth_ref": [
      "r113",
      "r114",
      "r115"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Value of investments transferred from the entity's investments in noncash transactions.",
        "label": "Transfer from Investments",
        "terseLabel": "Transfer of fixed maturity securities to former affiliate"
       }
      }
     },
     "localname": "TransferOfInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails",
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TransferToInvestments": {
     "auth_ref": [
      "r113",
      "r114",
      "r115"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Value of investments transferred to the entity's investments in noncash transactions.",
        "label": "Transfer to Investments",
        "verboseLabel": "Transfer of fixed maturity securities from affiliate"
       }
      }
     },
     "localname": "TransferToInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/CondensedFinancialInformationParentCompanyCondensedStatementsOfCashFlowsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount": {
     "auth_ref": [
      "r465"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.",
        "label": "Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount",
        "verboseLabel": "Cash collateral received from counterparties"
       }
      }
     },
     "localname": "TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": {
     "auth_ref": [
      "r467"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ContingenciesCommitmentsAndGuaranteesCommitmentsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsPurchasedCreditImpairedInvestmentsNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSalesOrDisposalsOfFixedMaturitySecuritiesDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedStatementsOfEquity",
      "http://www.brighthousefinancial.com/role/EquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsChangesInNetUnrealizedInvestmentGainsLossesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TypeOfRestructuringDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Identification of the types of restructuring costs.",
        "label": "Type of Restructuring [Domain]",
        "terseLabel": "Type of Restructuring [Domain]"
       }
      }
     },
     "localname": "TypeOfRestructuringDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails",
      "http://www.brighthousefinancial.com/role/OrganizationalChangesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_USStatesAndPoliticalSubdivisionsMember": {
     "auth_ref": [
      "r285",
      "r654"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Bonds or similar securities issued by state, city, or local US governments or the agencies operated by state, city, or local governments. Debt securities issued by state governments may include bond issuances of US state authorities including, for example, but not limited to, housing authorities, dormitory authorities, and general obligations while debt securities issued by political subdivisions of US states would include, for example, debt issuances by county, borough, city, or municipal governments.",
        "label": "US States and Political Subdivisions Debt Securities [Member]",
        "terseLabel": "State and political subdivision",
        "verboseLabel": "State and political subdivision"
       }
      }
     },
     "localname": "USStatesAndPoliticalSubdivisionsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/FairValueUnobservableInputReconciliationDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_USTreasuryAndGovernmentMember": {
     "auth_ref": [
      "r285",
      "r493",
      "r654"
     ],
     "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 agency",
        "verboseLabel": "U.S. government and agency"
       }
      }
     },
     "localname": "USTreasuryAndGovernmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/ConsolidatedSummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetails",
      "http://www.brighthousefinancial.com/role/FairValueRecurringFairValueMeasurementsDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsContinuousGrossUnrealizedLossesForFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsFixedMaturitySecuritiesAfsBySectorDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingNarrativeDetails",
      "http://www.brighthousefinancial.com/role/InvestmentsSecuritiesLendingRemainingTenorDetails"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_UnderlyingAssetClassDomain": {
     "auth_ref": [
      "r390"
     ],
     "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesCreditRiskOnFreestandingDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_UniversalLifeMember": {
     "auth_ref": [
      "r600",
      "r618"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Life insurance contract under which premiums are generally flexible, the level of death benefits may be adjusted, and mortality expense, and other charges may vary.",
        "label": "Universal Life [Member]",
        "terseLabel": "Universal Life [Member]"
       }
      }
     },
     "localname": "UniversalLifeMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "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]",
        "verboseLabel": "Net Unrealized Investment Gains (Losses)"
       }
      }
     },
     "localname": "UnrealizedGainLossOnInvestmentsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_UnrecognizedTaxBenefits": {
     "auth_ref": [
      "r297",
      "r308"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of unrecognized tax benefits.",
        "label": "Unrecognized Tax Benefits",
        "periodEndLabel": "Balance at December 31,",
        "periodStartLabel": "Balance at January 1,"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions": {
     "auth_ref": [
      "r310"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.",
        "label": "Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions",
        "negatedTerseLabel": "Reductions for tax positions of current year"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions": {
     "auth_ref": [
      "r309"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.",
        "label": "Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions",
        "negatedLabel": "Reductions for tax positions of prior years"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities": {
     "auth_ref": [
      "r311"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.",
        "label": "Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities",
        "negatedTerseLabel": "Settlements with tax authorities"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions": {
     "auth_ref": [
      "r310"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.",
        "label": "Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions",
        "verboseLabel": "Additions for tax positions of current year"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions": {
     "auth_ref": [
      "r309"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.",
        "label": "Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions",
        "verboseLabel": "Additions for tax positions of prior years"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate": {
     "auth_ref": [
      "r312"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.",
        "label": "Unrecognized Tax Benefits that Would Impact Effective Tax Rate",
        "terseLabel": "Unrecognized tax benefits that, if recognized would impact the effective rate"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/IncomeTaxReconciliationOfUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UseOfEstimates": {
     "auth_ref": [
      "r148",
      "r149",
      "r150",
      "r151",
      "r153",
      "r154",
      "r155"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.",
        "label": "Use of Estimates, Policy [Policy Text Block]",
        "terseLabel": "Use of Estimates, Policy [Policy Text Block]"
       }
      }
     },
     "localname": "UseOfEstimates",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/BusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ValueOfBusinessAcquiredVOBA": {
     "auth_ref": [
      "r525",
      "r552"
     ],
     "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",
        "periodEndLabel": "Ending Balance of VOBA",
        "periodStartLabel": "Beginning Balance of VOBA"
       }
      }
     },
     "localname": "ValueOfBusinessAcquiredVOBA",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DeferredPolicyAcquisitionCostsValueOfBusinessAcquiredAndOtherPolicyRelatedIntangiblesDacAndVobaDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_VariableAnnuityMember": {
     "auth_ref": [
      "r619",
      "r658",
      "r660"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contract providing periodic payment that varies according to investment experience of separate account in which amount paid to provide for annuity is allocated.",
        "label": "Variable Annuity [Member]",
        "verboseLabel": "Variable Annuity Guarantees"
       }
      }
     },
     "localname": "VariableAnnuityMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesDetails",
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToAnnuityContractsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "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/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets": {
     "auth_ref": [
      "r348"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary.",
        "label": "Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets",
        "verboseLabel": "Carrying Amount"
       }
      }
     },
     "localname": "VariableInterestEntityNonconsolidatedCarryingAmountAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountLiabilities": {
     "auth_ref": [
      "r348"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying amount of the liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary.",
        "label": "Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities",
        "verboseLabel": "Maximum Exposure to Loss"
       }
      }
     },
     "localname": "VariableInterestEntityNonconsolidatedCarryingAmountLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InvestmentsVariableInterestEntitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_VariableLifeMember": {
     "auth_ref": [
      "r616",
      "r658"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contract providing life insurance under which benefit payable upon death or surrender varies to reflect investment experience of separate account supporting policy.",
        "label": "Variable Life [Member]",
        "terseLabel": "Variable Life [Member]"
       }
      }
     },
     "localname": "VariableLifeMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/InsuranceGuaranteesRelatedToUniversalAndVariableLifeContractsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_VarianceSwapMember": {
     "auth_ref": [
      "r359"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A type of volatility swap where the payout is linear to variance rather than volatility. Therefore, the payout will rise at a higher rate than volatility.",
        "label": "Variance Swap [Member]",
        "terseLabel": "Equity variance swaps"
       }
      }
     },
     "localname": "VarianceSwapMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.brighthousefinancial.com/role/DerivativesPrimaryRisksManagedByDerivativesDetails"
     ],
     "xbrltype": "domainItemType"
    }
   },
   "unitCount": 6
  }
 },
 "std_ref": {
  "r0": {
   "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"
  },
  "r1": {
   "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"
  },
  "r10": {
   "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"
  },
  "r100": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3000-108585"
  },
  "r101": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21D",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=SL94080555-108585"
  },
  "r102": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "24",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585"
  },
  "r103": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585"
  },
  "r104": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585"
  },
  "r105": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585"
  },
  "r106": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
  },
  "r107": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
  },
  "r108": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
  },
  "r109": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585"
  },
  "r11": {
   "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"
  },
  "r110": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3098-108585"
  },
  "r111": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4273-108586"
  },
  "r112": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586"
  },
  "r113": {
   "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"
  },
  "r114": {
   "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"
  },
  "r115": {
   "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"
  },
  "r116": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586"
  },
  "r117": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790"
  },
  "r118": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(g))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r119": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h)(2))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r12": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(26)(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r120": {
   "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"
  },
  "r121": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(k))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r122": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(m)(1)(iii))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r123": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(b))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r124": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(e))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r125": {
   "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"
  },
  "r126": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(f))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r127": {
   "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"
  },
  "r128": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(k)(1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r129": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(m)(1)(i)(A))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r13": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(26)(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r130": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(m))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r131": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(n)(2))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r132": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(n))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r133": {
   "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"
  },
  "r134": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04(b))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690"
  },
  "r135": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690"
  },
  "r136": {
   "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"
  },
  "r137": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "235",
   "URI": "http://asc.fasb.org/topic&trid=2122369"
  },
  "r138": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(3)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
  },
  "r139": {
   "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"
  },
  "r14": {
   "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"
  },
  "r140": {
   "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"
  },
  "r141": {
   "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"
  },
  "r142": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794"
  },
  "r143": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794"
  },
  "r144": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794"
  },
  "r145": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "250",
   "URI": "http://asc.fasb.org/topic&trid=2122394"
  },
  "r146": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1377-109256"
  },
  "r147": {
   "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"
  },
  "r148": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r149": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r15": {
   "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"
  },
  "r150": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592"
  },
  "r151": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592"
  },
  "r152": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592"
  },
  "r153": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592"
  },
  "r154": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592"
  },
  "r155": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592"
  },
  "r156": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "275",
   "URI": "http://asc.fasb.org/topic&trid=2134479"
  },
  "r157": {
   "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"
  },
  "r158": {
   "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"
  },
  "r159": {
   "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"
  },
  "r16": {
   "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"
  },
  "r160": {
   "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"
  },
  "r161": {
   "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"
  },
  "r162": {
   "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"
  },
  "r163": {
   "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"
  },
  "r164": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599"
  },
  "r165": {
   "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"
  },
  "r166": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "30",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599"
  },
  "r167": {
   "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"
  },
  "r168": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "31",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8924-108599"
  },
  "r169": {
   "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"
  },
  "r17": {
   "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"
  },
  "r170": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599"
  },
  "r171": {
   "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"
  },
  "r172": {
   "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"
  },
  "r173": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "280",
   "URI": "http://asc.fasb.org/topic&trid=2134510"
  },
  "r174": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522"
  },
  "r175": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524"
  },
  "r176": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "29",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=SL6953659-111524"
  },
  "r177": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=d3e5066-111524"
  },
  "r178": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524"
  },
  "r179": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524"
  },
  "r18": {
   "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"
  },
  "r180": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118936363&loc=SL6953401-111524"
  },
  "r181": {
   "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"
  },
  "r182": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "15",
   "SubTopic": "30",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118938799&loc=d3e13503-111538"
  },
  "r183": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(1)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544"
  },
  "r184": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(2)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544"
  },
  "r185": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118954083&loc=d3e26610-111562"
  },
  "r186": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118954083&loc=d3e26853-111562"
  },
  "r187": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27405-111563"
  },
  "r188": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=SL6283291-111563"
  },
  "r189": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563"
  },
  "r19": {
   "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"
  },
  "r190": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(aa)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563"
  },
  "r191": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563"
  },
  "r192": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563"
  },
  "r193": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563"
  },
  "r194": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27198-111563"
  },
  "r195": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27198-111563"
  },
  "r196": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27198-111563"
  },
  "r197": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27198-111563"
  },
  "r198": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27198-111563"
  },
  "r199": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27232-111563"
  },
  "r2": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
  },
  "r20": {
   "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"
  },
  "r200": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(3)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27290-111563"
  },
  "r201": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27290-111563"
  },
  "r202": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27337-111563"
  },
  "r203": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27340-111563"
  },
  "r204": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)-(d)",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=118939692&loc=d3e27357-111563"
  },
  "r205": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=116721925&loc=d3e88052-122713"
  },
  "r206": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "320",
   "URI": "http://asc.fasb.org/topic&trid=2196928"
  },
  "r207": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570"
  },
  "r208": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=109237563&loc=d3e33775-111570"
  },
  "r209": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33912-111571"
  },
  "r21": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(4))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r210": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(2)",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
  },
  "r211": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
  },
  "r212": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919244-210447"
  },
  "r213": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919244-210447"
  },
  "r214": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447"
  },
  "r215": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447"
  },
  "r216": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "16",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447"
  },
  "r217": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447"
  },
  "r218": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447"
  },
  "r219": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955255&loc=SL82921830-210448"
  },
  "r22": {
   "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"
  },
  "r220": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955255&loc=SL82921833-210448"
  },
  "r221": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955255&loc=SL82921835-210448"
  },
  "r222": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955255&loc=SL82921842-210448"
  },
  "r223": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Subparagraph": "(d)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955255&loc=SL82921842-210448"
  },
  "r224": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "79",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955255&loc=SL82922352-210448"
  },
  "r225": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "80",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955255&loc=SL82922355-210448"
  },
  "r226": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454"
  },
  "r227": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955579&loc=SL82922888-210455"
  },
  "r228": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955579&loc=SL82922895-210455"
  },
  "r229": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955579&loc=SL82922900-210455"
  },
  "r23": {
   "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"
  },
  "r230": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118942371&loc=SL82922954-210456"
  },
  "r231": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "340",
   "URI": "http://asc.fasb.org/extlink&oid=99397363&loc=d3e9420-108338"
  },
  "r232": {
   "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"
  },
  "r233": {
   "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"
  },
  "r234": {
   "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"
  },
  "r235": {
   "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"
  },
  "r236": {
   "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"
  },
  "r237": {
   "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"
  },
  "r238": {
   "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"
  },
  "r239": {
   "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"
  },
  "r24": {
   "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"
  },
  "r240": {
   "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"
  },
  "r241": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "350",
   "URI": "http://asc.fasb.org/topic&trid=2144416"
  },
  "r242": {
   "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"
  },
  "r243": {
   "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"
  },
  "r244": {
   "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"
  },
  "r245": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "420",
   "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869"
  },
  "r246": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB TOPIC 5.P.3)",
   "Topic": "420",
   "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747"
  },
  "r247": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB TOPIC 5.P.4)",
   "Topic": "420",
   "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747"
  },
  "r248": {
   "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"
  },
  "r249": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "440",
   "URI": "http://asc.fasb.org/topic&trid=2144648"
  },
  "r25": {
   "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"
  },
  "r250": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "05",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=99385795&loc=d3e12631-108344"
  },
  "r251": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349"
  },
  "r252": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14615-108349"
  },
  "r253": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14394-108349"
  },
  "r254": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349"
  },
  "r255": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14453-108349"
  },
  "r256": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14472-108349"
  },
  "r257": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14557-108349"
  },
  "r258": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "450",
   "URI": "http://asc.fasb.org/topic&trid=2127136"
  },
  "r259": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "460",
   "URI": "http://asc.fasb.org/extlink&oid=118943654&loc=d3e12021-110248"
  },
  "r26": {
   "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"
  },
  "r260": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "460",
   "URI": "http://asc.fasb.org/extlink&oid=118943654&loc=d3e12053-110248"
  },
  "r261": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(4)",
   "Topic": "460",
   "URI": "http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248"
  },
  "r262": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(1)",
   "Topic": "460",
   "URI": "http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248"
  },
  "r263": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "460",
   "URI": "http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248"
  },
  "r264": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "460",
   "URI": "http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248"
  },
  "r265": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "460",
   "URI": "http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249"
  },
  "r266": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "460",
   "URI": "http://asc.fasb.org/topic&trid=2155896"
  },
  "r267": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601"
  },
  "r268": {
   "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"
  },
  "r269": {
   "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"
  },
  "r27": {
   "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"
  },
  "r270": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "470",
   "URI": "http://asc.fasb.org/topic&trid=2208564"
  },
  "r271": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "63",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "480",
   "URI": "http://asc.fasb.org/extlink&oid=117411753&loc=d3e23176-110880"
  },
  "r272": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Topic": "480",
   "URI": "http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764"
  },
  "r273": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3A",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(3)",
   "Topic": "480",
   "URI": "http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764"
  },
  "r274": {
   "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"
  },
  "r275": {
   "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"
  },
  "r276": {
   "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"
  },
  "r277": {
   "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"
  },
  "r278": {
   "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"
  },
  "r279": {
   "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"
  },
  "r28": {
   "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"
  },
  "r280": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "505",
   "URI": "http://asc.fasb.org/topic&trid=2208762"
  },
  "r281": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045"
  },
  "r282": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045"
  },
  "r283": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118944142&loc=SL49130690-203046-203046"
  },
  "r284": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "610",
   "URI": "http://asc.fasb.org/topic&trid=49130413"
  },
  "r285": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(ii)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r286": {
   "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=118255775&loc=d3e1928-114920"
  },
  "r287": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(n)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r288": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r289": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921"
  },
  "r29": {
   "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"
  },
  "r290": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=6412939&loc=d3e15145-114933"
  },
  "r291": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "60",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=66047640&loc=d3e39622-114963"
  },
  "r292": {
   "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"
  },
  "r293": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=d3e29149-114947"
  },
  "r294": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "720",
   "URI": "http://asc.fasb.org/topic&trid=2122503"
  },
  "r295": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=117330534&loc=d3e28680-109314"
  },
  "r296": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=117330534&loc=d3e28680-109314"
  },
  "r297": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=SL37586934-109318"
  },
  "r298": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32123-109318"
  },
  "r299": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32247-109318"
  },
  "r3": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(27)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r30": {
   "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"
  },
  "r300": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32280-109318"
  },
  "r301": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e31931-109318"
  },
  "r302": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319"
  },
  "r303": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319"
  },
  "r304": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
  },
  "r305": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
  },
  "r306": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
  },
  "r307": {
   "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"
  },
  "r308": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r309": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r31": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.3(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r310": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(2)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r311": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(3)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r312": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r313": {
   "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"
  },
  "r314": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32809-109319"
  },
  "r315": {
   "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"
  },
  "r316": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r317": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r318": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r319": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32847-109319"
  },
  "r32": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.3,4)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r320": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319"
  },
  "r321": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319"
  },
  "r322": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319"
  },
  "r323": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319"
  },
  "r324": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r325": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r326": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r327": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB TOPIC 6.I)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r328": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.7)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r329": {
   "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"
  },
  "r33": {
   "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"
  },
  "r330": {
   "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"
  },
  "r331": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(d)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324"
  },
  "r332": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "05",
   "SubTopic": "30",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=65884525&loc=d3e40913-109327"
  },
  "r333": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "740",
   "URI": "http://asc.fasb.org/topic&trid=2144680"
  },
  "r334": {
   "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"
  },
  "r335": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=d3e5283-111683"
  },
  "r336": {
   "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"
  },
  "r337": {
   "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"
  },
  "r338": {
   "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"
  },
  "r339": {
   "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"
  },
  "r34": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.8,17)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r340": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4613674-111683"
  },
  "r341": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684"
  },
  "r342": {
   "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"
  },
  "r343": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(2)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
  },
  "r344": {
   "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"
  },
  "r345": {
   "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"
  },
  "r346": {
   "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"
  },
  "r347": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=118582676&loc=d3e5710-111685"
  },
  "r348": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "a",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=118582676&loc=d3e5728-111685"
  },
  "r349": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=118582676&loc=d3e5728-111685"
  },
  "r35": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(3))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13728-122682"
  },
  "r350": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=118582676&loc=SL6759159-111685"
  },
  "r351": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=118582676&loc=d3e5747-111685"
  },
  "r352": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=118582676&loc=SL6228884-111685"
  },
  "r353": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4I",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116874947&loc=SL4590271-111686"
  },
  "r354": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4J",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116874947&loc=SL4591551-111686"
  },
  "r355": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4K",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116874947&loc=SL4591552-111686"
  },
  "r356": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3A-02)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355033-122828"
  },
  "r357": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3A-03)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355100-122828"
  },
  "r358": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "810",
   "URI": "http://asc.fasb.org/topic&trid=2197479"
  },
  "r359": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "83",
   "Publisher": "FASB",
   "Section": "15",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=117415099&loc=d3e34841-113949"
  },
  "r36": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=49176635&loc=d3e9760-107771"
  },
  "r360": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958"
  },
  "r361": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5579240-113959"
  },
  "r362": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959"
  },
  "r363": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959"
  },
  "r364": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959"
  },
  "r365": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)(i)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=d3e41620-113959"
  },
  "r366": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)(ii)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=d3e41620-113959"
  },
  "r367": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=d3e41620-113959"
  },
  "r368": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=d3e41638-113959"
  },
  "r369": {
   "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"
  },
  "r37": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312"
  },
  "r370": {
   "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"
  },
  "r371": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(1)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959"
  },
  "r372": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a),(c)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959"
  },
  "r373": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959"
  },
  "r374": {
   "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"
  },
  "r375": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959"
  },
  "r376": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959"
  },
  "r377": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4C",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959"
  },
  "r378": {
   "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"
  },
  "r379": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959"
  },
  "r38": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312"
  },
  "r380": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959"
  },
  "r381": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(2)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959"
  },
  "r382": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(3)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959"
  },
  "r383": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(5)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959"
  },
  "r384": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959"
  },
  "r385": {
   "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"
  },
  "r386": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4E",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624181-113959"
  },
  "r387": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4H",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959"
  },
  "r388": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4H",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959"
  },
  "r389": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4J",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5708773-113959"
  },
  "r39": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312"
  },
  "r390": {
   "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"
  },
  "r391": {
   "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"
  },
  "r392": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4K",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(1)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5708775-113959"
  },
  "r393": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4K",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5708775-113959"
  },
  "r394": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4K",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5708775-113959"
  },
  "r395": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4L",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5708777-113959"
  },
  "r396": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=d3e41641-113959"
  },
  "r397": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=d3e41675-113959"
  },
  "r398": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=d3e41678-113959"
  },
  "r399": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=d3e41678-113959"
  },
  "r4": {
   "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"
  },
  "r40": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312"
  },
  "r400": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=d3e41678-113959"
  },
  "r401": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "182",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=116861445&loc=SL5629052-113961"
  },
  "r402": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "15",
   "Topic": "815",
   "URI": "http://asc.fasb.org/subtopic&trid=2229187"
  },
  "r403": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "25",
   "Subparagraph": "(a)(1)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986"
  },
  "r404": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "25",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986"
  },
  "r405": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=6445032&loc=d3e90193-114008"
  },
  "r406": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=6445032&loc=d3e90198-114008"
  },
  "r407": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008"
  },
  "r408": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "815",
   "URI": "http://asc.fasb.org/topic&trid=2229140"
  },
  "r409": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r41": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(1)(i)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312"
  },
  "r410": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r411": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bb)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r412": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bbb)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r413": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bbb)(1)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r414": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bbb)(2)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r415": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r416": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r417": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1a)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r418": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r419": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(3)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r42": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312"
  },
  "r420": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r421": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r422": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258"
  },
  "r423": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258"
  },
  "r424": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=SL6742756-110258"
  },
  "r425": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=SL6742756-110258"
  },
  "r426": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "60",
   "SubTopic": "10",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=7493716&loc=d3e21868-110260"
  },
  "r427": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=116690757&loc=d3e13220-108610"
  },
  "r428": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=118260190&loc=d3e13279-108611"
  },
  "r429": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611"
  },
  "r43": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225877-175312"
  },
  "r430": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=118260190&loc=d3e13467-108611"
  },
  "r431": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=118260190&loc=d3e13476-108611"
  },
  "r432": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612"
  },
  "r433": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "20",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118948100&loc=d3e30304-110892"
  },
  "r434": {
   "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"
  },
  "r435": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Subparagraph": "(b,d)",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
  },
  "r436": {
   "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"
  },
  "r437": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391"
  },
  "r438": {
   "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"
  },
  "r439": {
   "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"
  },
  "r44": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313"
  },
  "r440": {
   "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"
  },
  "r441": {
   "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"
  },
  "r442": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r443": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r444": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r445": {
   "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"
  },
  "r446": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864"
  },
  "r447": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864"
  },
  "r448": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864"
  },
  "r449": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864"
  },
  "r45": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226016-175313"
  },
  "r450": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "850",
   "URI": "http://asc.fasb.org/topic&trid=2122745"
  },
  "r451": {
   "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"
  },
  "r452": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "855",
   "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314020-165662"
  },
  "r453": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "855",
   "URI": "http://asc.fasb.org/topic&trid=2122774"
  },
  "r454": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "05",
   "SubTopic": "10",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=109246787&loc=d3e93645-111703"
  },
  "r455": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "40",
   "SubTopic": "10",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116634877&loc=d3e96813-111708"
  },
  "r456": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719"
  },
  "r457": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719"
  },
  "r458": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719"
  },
  "r459": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719"
  },
  "r46": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "16",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226024-175313"
  },
  "r460": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719"
  },
  "r461": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=SL51823488-111719"
  },
  "r462": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728"
  },
  "r463": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729"
  },
  "r464": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729"
  },
  "r465": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)(1)(ii)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729"
  },
  "r466": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729"
  },
  "r467": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
  },
  "r468": {
   "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"
  },
  "r469": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447"
  },
  "r47": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313"
  },
  "r470": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447"
  },
  "r471": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447"
  },
  "r472": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447"
  },
  "r473": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447"
  },
  "r474": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447"
  },
  "r475": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "33",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447"
  },
  "r476": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "33",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447"
  },
  "r477": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "35A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447"
  },
  "r478": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "35A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447"
  },
  "r479": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(c)(1)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447"
  },
  "r48": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313"
  },
  "r480": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(c)(2)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447"
  },
  "r481": {
   "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"
  },
  "r482": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "320",
   "Topic": "940",
   "URI": "http://asc.fasb.org/subtopic&trid=2176304"
  },
  "r483": {
   "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"
  },
  "r484": {
   "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"
  },
  "r485": {
   "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"
  },
  "r486": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(15)(1))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r487": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(15)(2))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r488": {
   "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"
  },
  "r489": {
   "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"
  },
  "r49": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226006-175313"
  },
  "r490": {
   "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"
  },
  "r491": {
   "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"
  },
  "r492": {
   "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"
  },
  "r493": {
   "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"
  },
  "r494": {
   "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"
  },
  "r495": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(7))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r496": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03.10(3))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r497": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03.15(3),(4))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r498": {
   "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"
  },
  "r499": {
   "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"
  },
  "r5": {
   "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"
  },
  "r50": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
  },
  "r500": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03.7(a)(7))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r501": {
   "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=116637391&loc=SL114874048-224260"
  },
  "r502": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(14)(d))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r503": {
   "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=116637391&loc=SL114874048-224260"
  },
  "r504": {
   "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=116637391&loc=SL114874048-224260"
  },
  "r505": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04.13(c),(d))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r506": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04.13(h))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r507": {
   "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=116637391&loc=SL114874048-224260"
  },
  "r508": {
   "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"
  },
  "r509": {
   "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"
  },
  "r51": {
   "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=118930883&loc=SL7669646-108580"
  },
  "r510": {
   "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"
  },
  "r511": {
   "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"
  },
  "r512": {
   "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"
  },
  "r513": {
   "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"
  },
  "r514": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "320",
   "Topic": "942",
   "URI": "http://asc.fasb.org/subtopic&trid=2209399"
  },
  "r515": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "325",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=75031641&loc=d3e63345-112809"
  },
  "r516": {
   "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"
  },
  "r517": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "470",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822"
  },
  "r518": {
   "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"
  },
  "r519": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6480726&loc=d3e6691-158385"
  },
  "r52": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
  },
  "r520": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(d)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6480726&loc=d3e6691-158385"
  },
  "r521": {
   "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"
  },
  "r522": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=99397103&loc=d3e6816-158387"
  },
  "r523": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117418410&loc=d3e7104-158389"
  },
  "r524": {
   "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"
  },
  "r525": {
   "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"
  },
  "r526": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r527": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r528": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(13)(b))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r529": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(15)(b)(2))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r53": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
  },
  "r530": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r531": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r532": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r533": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r534": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r535": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r536": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r537": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r538": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r539": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r54": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
  },
  "r540": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(23)(c))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r541": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r542": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r543": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r544": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(5))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r545": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r546": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r547": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r548": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.1(d))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r549": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.1(e))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r55": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(h)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
  },
  "r550": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r551": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r552": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r553": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.13(b))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r554": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r555": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.14(b)(1))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r556": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.14)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r557": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r558": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.17)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r559": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.23(c))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r56": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580"
  },
  "r560": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.3)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r561": {
   "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=119400593&loc=d3e572229-122910"
  },
  "r562": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.7)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r563": {
   "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=116637232&loc=SL114874131-224263"
  },
  "r564": {
   "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=116637232&loc=SL114874131-224263"
  },
  "r565": {
   "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=116637232&loc=SL114874131-224263"
  },
  "r566": {
   "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=116637232&loc=SL114874131-224263"
  },
  "r567": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(6))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263"
  },
  "r568": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(7)(a))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263"
  },
  "r569": {
   "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=116637232&loc=SL114874131-224263"
  },
  "r57": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580"
  },
  "r570": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04.1,4)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263"
  },
  "r571": {
   "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=116637232&loc=SL114874131-224263"
  },
  "r572": {
   "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=116637232&loc=SL114874131-224263"
  },
  "r573": {
   "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=116637232&loc=SL114874131-224263"
  },
  "r574": {
   "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=116637232&loc=SL114874131-224263"
  },
  "r575": {
   "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=116637232&loc=SL114874131-224263"
  },
  "r576": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.12-16(Column D))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915"
  },
  "r577": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.12-16(Column G))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915"
  },
  "r578": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.12-16(Column H))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915"
  },
  "r579": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.12-16(Column J))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915"
  },
  "r58": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580"
  },
  "r580": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.12-16)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915"
  },
  "r581": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.12-17(Column B))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915"
  },
  "r582": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.12-17(Column C))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915"
  },
  "r583": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.12-17(Column D))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915"
  },
  "r584": {
   "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"
  },
  "r585": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.12-17(Column F))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915"
  },
  "r586": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.12-17)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915"
  },
  "r587": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915"
  },
  "r588": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "30",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117418742&loc=d3e10138-158409"
  },
  "r589": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6481654&loc=d3e11214-158414"
  },
  "r59": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=d3e681-108580"
  },
  "r590": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=35755530&loc=d3e11264-158415"
  },
  "r591": {
   "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"
  },
  "r592": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=35755530&loc=d3e11264-158415"
  },
  "r593": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419109&loc=SL117422543-158416"
  },
  "r594": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419109&loc=SL117422543-158416"
  },
  "r595": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419109&loc=SL117422543-158416"
  },
  "r596": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419109&loc=d3e11332-158416"
  },
  "r597": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419109&loc=d3e11332-158416"
  },
  "r598": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(c)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419109&loc=d3e11332-158416"
  },
  "r599": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419109&loc=d3e11332-158416"
  },
  "r6": {
   "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"
  },
  "r60": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580"
  },
  "r600": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "30",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117418976&loc=d3e11522-158419"
  },
  "r601": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "310",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=118959141&loc=d3e21338-158488"
  },
  "r602": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "360",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117337397&loc=d3e23415-158514"
  },
  "r603": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "360",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117337397&loc=d3e23439-158514"
  },
  "r604": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "360",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117337411&loc=d3e23528-158515"
  },
  "r605": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419144&loc=d3e13193-158430"
  },
  "r606": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4H",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116884468&loc=SL65671331-158438"
  },
  "r607": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419472&loc=d3e14931-158439"
  },
  "r608": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(b)(6)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419472&loc=d3e14931-158439"
  },
  "r609": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(c)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419472&loc=d3e14931-158439"
  },
  "r61": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL34724391-108580"
  },
  "r610": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419472&loc=d3e14931-158439"
  },
  "r611": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419472&loc=d3e14937-158439"
  },
  "r612": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419472&loc=SL117782755-158439"
  },
  "r613": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419472&loc=SL117782768-158439"
  },
  "r614": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13H",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419784&loc=SL117783719-158441"
  },
  "r615": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13J",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(g)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419784&loc=SL117783734-158441"
  },
  "r616": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419784&loc=d3e15261-158441"
  },
  "r617": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "29E",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419784&loc=SL117819541-158441"
  },
  "r618": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "29F",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419784&loc=SL117819544-158441"
  },
  "r619": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "29G",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419784&loc=SL117819547-158441"
  },
  "r62": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL34724394-108580"
  },
  "r620": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9C",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116884803&loc=SL65671395-207642"
  },
  "r621": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(1)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419843&loc=SL117420844-207641"
  },
  "r622": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6483535&loc=d3e16392-158451"
  },
  "r623": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "505",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529"
  },
  "r624": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "505",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529"
  },
  "r625": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "505",
   "Subparagraph": "(b)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24746-158529"
  },
  "r626": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "505",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24746-158529"
  },
  "r627": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "505",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486098&loc=d3e24790-158529"
  },
  "r628": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "505",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=82848697&loc=d3e24938-158530"
  },
  "r629": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "505",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=82848697&loc=d3e24959-158530"
  },
  "r63": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580"
  },
  "r630": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "60",
   "Subparagraph": "(b)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117422154&loc=SL117422156-227712"
  },
  "r631": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "605",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=84167274&loc=d3e27175-158546"
  },
  "r632": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "605",
   "Subparagraph": "(a)(2)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547"
  },
  "r633": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "605",
   "Subparagraph": "(b)(1)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547"
  },
  "r634": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "605",
   "Subparagraph": "(b)(2)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547"
  },
  "r635": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "605",
   "Subparagraph": "(b)(3)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547"
  },
  "r636": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "605",
   "Subparagraph": "(c)(1)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547"
  },
  "r637": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "605",
   "Subparagraph": "(c)(2)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547"
  },
  "r638": {
   "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"
  },
  "r639": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "605",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547"
  },
  "r64": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580"
  },
  "r640": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "605",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=99379264&loc=d3e27758-158548"
  },
  "r641": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "605",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=99379264&loc=d3e27830-158548"
  },
  "r642": {
   "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"
  },
  "r643": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "((d)(1))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r644": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "((d)(5))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r645": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(a),(b),(c),(d)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r646": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(d)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r647": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(d)(1)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r648": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(d)(1)(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r649": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(d)(1)(b)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r65": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580"
  },
  "r650": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(d)(2)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r651": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(d)(3)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r652": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(d)(3),(5)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r653": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(d)(4)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r654": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(e)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r655": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=d3e19393-158473"
  },
  "r656": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=SL117422267-158473"
  },
  "r657": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(c)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=SL117422267-158473"
  },
  "r658": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420044&loc=SL117422267-158473"
  },
  "r659": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "80",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=118959010&loc=SL117422397-158474"
  },
  "r66": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580"
  },
  "r660": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "80",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=118959010&loc=SL117422401-158474"
  },
  "r661": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "30",
   "SubTopic": "805",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=99383031&loc=d3e30256-158563"
  },
  "r662": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "805",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6918812&loc=d3e30762-158568"
  },
  "r663": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "825",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117420823&loc=d3e32546-158582"
  },
  "r664": {
   "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"
  },
  "r665": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "944",
   "URI": "http://asc.fasb.org/topic&trid=2303980"
  },
  "r666": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "220",
   "Subparagraph": "(k)",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=118262090&loc=SL114874205-224268"
  },
  "r667": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.6-07.1(c))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=116637345&loc=SL114874292-224272"
  },
  "r668": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.6-07.2(a),(b),(c),(d))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=116637345&loc=SL114874292-224272"
  },
  "r669": {
   "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"
  },
  "r67": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580"
  },
  "r670": {
   "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"
  },
  "r671": {
   "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"
  },
  "r672": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "320",
   "Subparagraph": "(SX 210.12-14(2))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010"
  },
  "r673": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "320",
   "Subparagraph": "(SX 210.12-14(3))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010"
  },
  "r674": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "320",
   "Subparagraph": "(SX 210.12-14(Column E))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010"
  },
  "r675": {
   "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"
  },
  "r676": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "320",
   "Subparagraph": "(SX 210.12-15(Column B))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010"
  },
  "r677": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "320",
   "Subparagraph": "(SX 210.12-15(Column C))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010"
  },
  "r678": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "320",
   "Subparagraph": "(SX 210.12-15(Column D))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010"
  },
  "r679": {
   "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"
  },
  "r68": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=d3e557-108580"
  },
  "r680": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "320",
   "Topic": "946",
   "URI": "http://asc.fasb.org/subtopic&trid=2324412"
  },
  "r681": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "450",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=6491354&loc=d3e6049-115624"
  },
  "r682": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "450",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=6491354&loc=d3e6052-115624"
  },
  "r683": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "740",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=6491622&loc=d3e9504-115650"
  },
  "r684": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Footnote 4))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024"
  },
  "r685": {
   "Name": "Forms 10-K, 10-Q, 20-F",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "13",
   "Subsection": "a-1-"
  },
  "r686": {
   "Name": "Forms 10-K, 20-F, 40-F",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "15",
   "Subsection": "d-1"
  },
  "r687": {
   "Name": "Regulation 12B",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r688": {
   "Name": "Regulation S-T",
   "Number": "232",
   "Publisher": "SEC",
   "Section": "405"
  },
  "r689": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "11",
   "Subsection": "03"
  },
  "r69": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116657188&loc=SL116659661-227067"
  },
  "r690": {
   "Footnote": "4",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "28"
  },
  "r691": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "(a)",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "04"
  },
  "r692": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "Column B",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "17"
  },
  "r693": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "Column C",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "17"
  },
  "r694": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "Column D",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "17"
  },
  "r695": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "Column E",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "17"
  },
  "r696": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "Column F",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "17"
  },
  "r697": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "a",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "04"
  },
  "r698": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "15"
  },
  "r699": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "16"
  },
  "r7": {
   "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"
  },
  "r70": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118951672&loc=d3e1436-108581"
  },
  "r700": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "17"
  },
  "r701": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "(m)",
   "Publisher": "SEC",
   "Section": "4",
   "Subparagraph": "(1)(iii)",
   "Subsection": "08"
  },
  "r702": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "c",
   "Publisher": "SEC",
   "Section": "5",
   "Subparagraph": "Schedule I",
   "Subsection": "04"
  },
  "r703": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "c",
   "Publisher": "SEC",
   "Section": "7",
   "Subparagraph": "Schedule II",
   "Subsection": "05"
  },
  "r704": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "9",
   "Subsection": "06"
  },
  "r71": {
   "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=116634182&loc=SL114868664-224227"
  },
  "r72": {
   "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=116634182&loc=SL114868664-224227"
  },
  "r73": {
   "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=116634182&loc=SL114868664-224227"
  },
  "r74": {
   "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=116634182&loc=SL114868664-224227"
  },
  "r75": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(b)(2))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r76": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(b)(4))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r77": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(b)(7)(c))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r78": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(b)(9)(a))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r79": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.1(e))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r8": {
   "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"
  },
  "r80": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.2)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r81": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.3)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r82": {
   "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=116634182&loc=SL114868664-224227"
  },
  "r83": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.7(a),(b))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r84": {
   "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=116634182&loc=SL114868664-224227"
  },
  "r85": {
   "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=116634182&loc=SL114868664-224227"
  },
  "r86": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.9)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r87": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&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=118932676&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=118932676&loc=d3e3179-108585"
  },
  "r9": {
   "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"
  },
  "r90": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&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=118932676&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=118932676&loc=d3e3213-108585"
  },
  "r93": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585"
  },
  "r94": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585"
  },
  "r95": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
  },
  "r96": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
  },
  "r97": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
  },
  "r98": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585"
  },
  "r99": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585"
  }
 },
 "version": "2.1"
}
