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v3.24.1.u1

Shares and Stockholders’ Equity - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Stockholders' Equity Note [Abstract] |  |
Deferred compensation plan mark to market adjustment | $ (3) | $ 3

X
- Definition Mark to market adjustments of the entity's stock associated with non-employee directors' deferred compensation plans. + References No definition available. + Details
Name: | lnc_DeferredCompensationPlanMarkToMarketAdjustment
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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