XML 96 R85.htm IDEA: XBRL DOCUMENT
v3.21.1

Fair Value of Financial Instruments (Fair Value Inputs Quantitative Information) (Details) $ in Millions | Mar. 31, 2021 USD ($) item | Dec. 31, 2020 USD ($)
--- | --- | ---
Assets Fair Value Disclosure [Abstract] |  |
Assets Fair Value Disclosure | $ | $ 303,060 | $ 304,561
Liabilities Fair Value Disclosure [Abstract] |  |
Liabilities measured at fair value | $ | (6,845) | (7,091)
Significant Unobservable Inputs (Level 3) [Member] |  |
Assets Fair Value Disclosure [Abstract] |  |
Assets Fair Value Disclosure | $ | 14,285 | 12,068
Liabilities Fair Value Disclosure [Abstract] |  |
Liabilities measured at fair value | $ | (5,904) | $ (5,627)
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] |  |
Assets Fair Value Disclosure [Abstract] |  |
Assets Fair Value Disclosure | $ | 527 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Future Contract Benefits [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Liabilities measured at fair value | $ | (4,107) |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Corporate Bonds [Member] |  |
Assets Fair Value Disclosure [Abstract] |  |
Assets Fair Value Disclosure | $ | 3,376 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Foreign Government Bonds [Member] |  |
Assets Fair Value Disclosure [Abstract] |  |
Assets Fair Value Disclosure | $ | 29 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | ABS [Member] |  |
Assets Fair Value Disclosure [Abstract] |  |
Assets Fair Value Disclosure | $ | $ 20 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Minimum [Member] | Corporate Bonds [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Fixed maturity AFS and trading securities, measurement input | 0.003 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Minimum [Member] | Foreign Government Bonds [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Fixed maturity AFS and trading securities, measurement input | 0.057 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Minimum [Member] | ABS [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Fixed maturity AFS and trading securities, measurement input | 0.030 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Maximum [Member] | Corporate Bonds [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Fixed maturity AFS and trading securities, measurement input | 0.079 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Maximum [Member] | Foreign Government Bonds [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Fixed maturity AFS and trading securities, measurement input | 0.057 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Maximum [Member] | ABS [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Fixed maturity AFS and trading securities, measurement input | 0.030 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Weighted Average [Member] | Corporate Bonds [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Fixed maturity AFS and trading securities, measurement input | 0.015 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Weighted Average [Member] | Foreign Government Bonds [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Fixed maturity AFS and trading securities, measurement input | 0.057 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Fixed Maturity AFS Securities [Member] | Weighted Average [Member] | ABS [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Fixed maturity AFS and trading securities, measurement input | 0.030 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Equity Securities [Member] | Equity Securities [Member] |  |
Assets Fair Value Disclosure [Abstract] |  |
Assets Fair Value Disclosure | $ | $ 20 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Equity Securities [Member] | Minimum [Member] | Equity Securities [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Equity securities, measurement input | 0.045 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Equity Securities [Member] | Maximum [Member] | Equity Securities [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Equity securities, measurement input | 0.062 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Equity Securities [Member] | Weighted Average [Member] | Equity Securities [Member] | Liquidity/Duration Adjustment [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Equity securities, measurement input | 0.058 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Other Assets [Member] |  |
Assets Fair Value Disclosure [Abstract] |  |
Assets Fair Value Disclosure | $ | $ 1,873 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Assets [Member] | Long-Term Lapse Rate [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.01 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Assets [Member] | Utilization Of Guaranteed Withdrawls [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.85 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Assets [Member] | Claims Utilization Factor [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.60 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Assets [Member] | Premiums Utilization Factor [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.80 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Assets [Member] | NPR [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.0007 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Assets [Member] | Volatility [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.01 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Assets [Member] | Long-Term Lapse Rate [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.30 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Assets [Member] | Utilization Of Guaranteed Withdrawls [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 1 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Assets [Member] | Claims Utilization Factor [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 1 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Assets [Member] | Premiums Utilization Factor [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 1.15 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Assets [Member] | NPR [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.0143 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Assets [Member] | Volatility [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.28 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Weighted Average [Member] | Other Assets [Member] | Utilization Of Guaranteed Withdrawls [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.94 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Weighted Average [Member] | Other Assets [Member] | NPR [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.0095 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct And Ceded Embedded Derivatives [Member] | Weighted Average [Member] | Other Assets [Member] | Volatility [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.1471 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Indexed Annuity And IUL Contracts [Member] | Minimum [Member] | Long-Term Lapse Rate [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Indexed Annuity And IUL Contracts [Member] | Maximum [Member] | Long-Term Lapse Rate [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative assets, measurement input | 0.09 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Future contract benefits - indexed annuity and IUL contracts embedded derivatives [Member] | Minimum [Member] | Future Contract Benefits [Member] | Long-Term Lapse Rate [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | Future contract benefits - indexed annuity and IUL contracts embedded derivatives [Member] | Maximum [Member] | Future Contract Benefits [Member] | Long-Term Lapse Rate [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.09 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Direct Embedded Derivatives [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Liabilities measured at fair value | $ | $ (152) |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Liabilities [Member] | Long-Term Lapse Rate [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.01 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Liabilities [Member] | Utilization Of Guaranteed Withdrawls [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.85 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Liabilities [Member] | Claims Utilization Factor [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.60 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Liabilities [Member] | Premiums Utilization Factor [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.80 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Liabilities [Member] | NPR [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.0007 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Minimum [Member] | Other Liabilities [Member] | Volatility [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.01 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Liabilities [Member] | Long-Term Lapse Rate [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.30 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Liabilities [Member] | Utilization Of Guaranteed Withdrawls [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 1 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Liabilities [Member] | Claims Utilization Factor [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 1 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Liabilities [Member] | Premiums Utilization Factor [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 1.15 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Liabilities [Member] | NPR [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.0143 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Maximum [Member] | Other Liabilities [Member] | Volatility [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.28 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Weighted Average [Member] | Other Liabilities [Member] | Utilization Of Guaranteed Withdrawls [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.94 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Weighted Average [Member] | Other Liabilities [Member] | NPR [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.0095 |
Significant Unobservable Inputs (Level 3) [Member] | Discounted Cash Flow Valuation Technique [Member] | GLB Ceded Embedded Derivatives [Member] | Weighted Average [Member] | Other Liabilities [Member] | Volatility [Member] |  |
Liabilities Fair Value Disclosure [Abstract] |  |
Derivative liability, measurement input | 0.1471 |

X
- Definition Value of input used to measure investment in debt security measured at fair value with change in fair value recognized in other comprehensive income. + References No definition available. + Details
Name: | lnc_DebtSecuritiesAvailableForSaleAndTradingMeasurementInput
Namespace Prefix: | lnc_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of input used to measure derivative asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_DerivativeAssetMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Value of input used to measure derivative liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_DerivativeLiabilityMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Value of input used to measure investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_EquitySecuritiesFvNiMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=us-gaap_IncomeApproachValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=lnc_FutureContractBenefitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_FixedMaturitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_ForeignGovernmentDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=lnc_MeasurementInputLiquidityDurationAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=lnc_OtherAssetsGlbReservesEmbeddedDerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_OtherAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputLapseRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputWithdrawalRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=lnc_MeasurementInputClaimsUtilizationRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=lnc_MeasurementInputPremiumsUtilizationRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputCreditSpreadMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=lnc_IndexedAnnuityContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=lnc_FutureContractBenefitsIndexedAnnuityAndUniversalLifeContractsEmbeddedDerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=lnc_GLBDirectEmbeddedDerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=lnc_GLBCededEmbeddedDerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |