XML 120 R103.htm IDEA: XBRL DOCUMENT
v3.25.1

Fair Value of Financial Instruments - Changes in Unrealized Gains (Losses) Included in OCI (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items] |  |
Unrealized gains (losses) included in OCI, net | $ 11 | $ (9)
Corporate bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items] |  |
Unrealized gains (losses) included in OCI, net | (7) | (11)
ABS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items] |  |
Unrealized gains (losses) included in OCI, net | 16 | (1)
Hybrid and redeemable preferred securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items] |  |
Unrealized gains (losses) included in OCI, net | 0 | 2
Mortgage loans on real estate |  |
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items] |  |
Unrealized gains (losses) included in OCI, net | $ 2 | $ 1

X
- Definition Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items] + References No definition available. + Details
Name: | lnc_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLevel3ActivityLineItems
Namespace Prefix: | lnc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unrealized gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3) and still held. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueAssetRecurringBasisStillHeldUnrealizedGainLossOci
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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

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

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