XML 64 R49.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Investments - Narrative (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 USD ($) loan investment | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) loan investment
Investments [Line Items] |  |  |
Increase in gross AFS securities unrealized losses | $ 814,000,000 |  |
Percentage of fair value rated as investment grade | 96.00% |  | 96.00%
Mortgage loans in process of foreclosure | $ 35,000,000 |  | $ 38,000,000
Losses from loan modifications | $ 0 | $ 0 |
Number of partnerships in alternative investment portfolio | investment | 358 |  | 352
Alternative investments as a percentage of overall invested assets | 3.00% |  | 3.00%
Fair value of collateral received that we are permitted to sell or re-pledge | $ 25,000,000 |  |
Fixed maturity available-for-sale securities, at fair value | 87,764,000,000 |  | $ 88,738,000,000
Investment commitments | 3,800,000,000 |  |
Investment commitments for limited partnerships | 2,900,000,000 |  |
Investment commitments for mortgage loans on real estate | 748,000,000 |  |
Investment commitments for private placements | 199,000,000 |  |
Asset Pledged as Collateral |  |  |
Investments [Line Items] |  |  |
Fixed maturity available-for-sale securities, at fair value | 52,000,000 |  |
Derivative Counterparties |  |  |
Investments [Line Items] |  |  |
Fair value of collateral received that we are permitted to sell or re-pledge | 1,700,000,000 |  |
Fair value of securities received as collateral that have been resold or repledged | $ 527,000,000 |  |
Minimum |  |  |
Investments [Line Items] |  |  |
Percentage of the fair value of securities obtained as collateral under reverse repurchase agreements | 80.00% |  |
Maximum |  |  |
Investments [Line Items] |  |  |
Percentage of the fair value of securities obtained as collateral under reverse repurchase agreements | 95.00% |  |
Residential mortgage loans on real estate |  |  |
Investments [Line Items] |  |  |
Number of loans past due | loan | 118 |  | 116
Number of loans in foreclosure | loan | 82 |  | 82
California | Mortgages | Geographic Concentration Risk | Commercial |  |  |
Investments [Line Items] |  |  |
Concentration risk | 26.00% |  | 27.00%
California | Mortgages | Geographic Concentration Risk | Residential mortgage loans on real estate |  |  |
Investments [Line Items] |  |  |
Concentration risk | 14.00% |  | 14.00%
Texas | Mortgages | Geographic Concentration Risk | Commercial |  |  |
Investments [Line Items] |  |  |
Concentration risk | 10.00% |  | 9.00%
New York | Mortgages | Geographic Concentration Risk | Residential mortgage loans on real estate |  |  |
Investments [Line Items] |  |  |
Concentration risk | 12.00% |  | 12.00%
Corporate bonds |  |  |
Investments [Line Items] |  |  |
Amortized cost of portfolio rated below investment grade | $ 2,800,000,000 |  | $ 3,000,000,000
Fair value of portfolio rated below investment grade | 2,700,000,000 |  | 2,800,000,000
Fannie Mae | MBS |  |  |
Investments [Line Items] |  |  |
Fair value, concentration of risk, investments | $ 741,000,000 |  | $ 739,000,000
Fannie Mae | Investments | Lender Concentration Risk | MBS |  |  |
Investments [Line Items] |  |  |
Concentration risk | 1.00% |  | 1.00%
Federal Home Loan Mortgage Corporation | MBS |  |  |
Investments [Line Items] |  |  |
Fair value, concentration of risk, investments | $ 567,000,000 |  | $ 570,000,000
Federal Home Loan Mortgage Corporation | Investments | Lender Concentration Risk | MBS |  |  |
Investments [Line Items] |  |  |
Concentration risk | 1.00% |  | 1.00%
Financial Service | Securities Investment |  |  |
Investments [Line Items] |  |  |
Fair value, concentration of risk, investments | $ 13,700,000,000 |  | $ 14,000,000,000
Financial Service | Investments | Lender Concentration Risk | Securities Investment |  |  |
Investments [Line Items] |  |  |
Concentration risk |  |  | 11.00%
Consumer Non-Cyclical Industry | Securities Investment |  |  |
Investments [Line Items] |  |  |
Fair value, concentration of risk, investments | $ 13,500,000,000 |  | $ 13,800,000,000
Consumer Non-Cyclical Industry | Investments | Lender Concentration Risk | Securities Investment |  |  |
Investments [Line Items] |  |  |
Concentration risk | 11.00% |  |

X
- Definition Alternative investments as a percentage of overall invested assets. + References No definition available. + Details
Name: | lnc_AlternativeInvestmentsAsAPercentageOfOverallInvestedAssets
Namespace Prefix: | lnc_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost of portfolio rated below investment grade. + References No definition available. + Details
Name: | lnc_AmortizedCostOfPortfolioRatedBelowInvestmentGrade
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the change in gross unrealized holding gain or loss on available-for-sale securities that has been included in accumulated other comprehensive income, a separate component of shareholders' equity, during the period. + References No definition available. + Details
Name: | lnc_AvailableForSaleSecuritiesChangeInGrossUnrealizedHoldingGainLoss
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of the fair value of portfolio that was rated investment grade as of balance sheet date. + References No definition available. + Details
Name: | lnc_AvailableForSaleSecuritiesFairValueDisclosurePercentInvestmentGrade
Namespace Prefix: | lnc_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This item represents the percentage of the fair value of securities obtained as collateral under reverse repurchase agreements + References No definition available. + Details
Name: | lnc_CollateralObtainedPercentOfFairValueReverseRepurchaseAgreements
Namespace Prefix: | lnc_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value of portfolio rated below investment grade. + References No definition available. + Details
Name: | lnc_FairValueOfPortfolioRatedBelowInvestmentGrade
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing Receivable, Number Of Loans In Foreclosure + References No definition available. + Details
Name: | lnc_FinancingReceivableNumberOfLoansInForeclosure
Namespace Prefix: | lnc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Financing Receivable, Number Of Loans Past Due + References No definition available. + Details
Name: | lnc_FinancingReceivableNumberOfLoansPastDue
Namespace Prefix: | lnc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Gain (Loss) On Modification Of Financing Receivable + References No definition available. + Details
Name: | lnc_GainLossOnModificationOfFinancingReceivable
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents total investment commitments as of the balance sheet date for fixed maturity available-for-sale securities, limited partnerships, real estate and mortgage loans on real estate. + References No definition available. + Details
Name: | lnc_InvestmentCommitments
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This item represents investment commitments as of the balance sheet date for limited partnerships. + References No definition available. + Details
Name: | lnc_InvestmentCommitmentsLimitedPartnerships
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This item represents investment commitments as of the balance sheet date for private placements. + References No definition available. + Details
Name: | lnc_InvestmentCommitmentsLimitedPrivatePlacements
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This item represents investment commitments as of the balance sheet date for mortgage loans. + References No definition available. + Details
Name: | lnc_InvestmentCommitmentsMortgageLoans
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Investments [Line Items] + References No definition available. + Details
Name: | lnc_InvestmentsLineItems
Namespace Prefix: | lnc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of partnerships represented in alternative investment portfolio. + References No definition available. + Details
Name: | lnc_NumberOfPartnershipsInAlternativeInvestmentPortfolio
Namespace Prefix: | lnc_
Data Type: | xbrli:positiveIntegerItemType
Balance Type: | na
Period Type: | instant

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-42 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-21 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-20 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482861/275-10-50-18 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482861/275-10-50-20 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-20 + Details
Name: | us-gaap_FairValueConcentrationOfRiskInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of collateral permitted, by contact or custom, to be sold or re-pledged. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481420/860-30-50-1A + Details
Name: | us-gaap_FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value of the collateral, or portion thereof, that has been re-pledged, delivered, or otherwise used. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481420/860-30-50-1A + Details
Name: | us-gaap_FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledged
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 35 -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-35 + Details
Name: | us-gaap_MortgageLoansInProcessOfForeclosureAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_PledgedStatusAxis=us-gaap_AssetPledgedAsCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_MortgagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_GeographicConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_TX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_NY
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_FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=lnc_InvestedAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_LenderConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_SecuritiesInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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