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DAC, VOBA, DSI, and DFEL (DFEL) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Changes in DFEL [Abstract] |  |  |
Balance as of beginning-of-year | $ 415 | $ 401 | $ 650
Business acquired (sold) through reinsurance |  | (290) |
Deferrals | 1,083 | 1,015 | 1,003
Amortization, net of interest: |  |  |
Amortization, excluding unlocking, net of interest | (565) | (595) | (538)
Unlocking | (49) | (387) | (275)
Adjustment related to realized (gains) losses | (35) | (10) | 25
Adjustment related to unrealized (gains) losses | 4,820 | 281 | (468)
Balance as of end-of-year | $ 5,669 | 415 | 401
Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |
Changes in DFEL [Abstract] |  |  |
Balance as of beginning-of-year |  | $ 4 |
Amortization, net of interest: |  |  |
Balance as of end-of-year |  |  | $ 4

X
- Definition The unamortized carrying amount of deferred front end loads as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of deferred front end loads capitalized during the period. + References No definition available. + Details
Name: | lnc_DeferredFrontEndLoadsAdditions
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of adjustment to amortization of deferred front end loads arising from a revision in estimated gross profit (when such amount serves as the basis for allocating amortization of DFEL to reporting periods). + References No definition available. + Details
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- References No definition available. + Details
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Namespace Prefix: | lnc_
Data Type: | xbrli:stringItemType
Balance Type: | na
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X
- Definition Amount of amortization of deferred front end loads attributable to realized investment gains (losses). + References No definition available. + Details
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Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition The amount of other amortization of deferred front end loads, net of interest, during the period. + References No definition available. + Details
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Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Amount of amortization of deferred front end loads attributable to unrealized investment gains (losses). + References No definition available. + Details
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Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Deferred Sales Inducement, Business acquired (sold) through reinsurance + References No definition available. + Details
Name: | lnc_DeferredSalesInducementBusinessAcquiredSoldThroughReinsurance
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Details
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Balance Type: |
Period Type: |