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v3.23.1

Future Contract Benefit (Narrative) (Details) $ in Billions | 12 Months Ended
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Dec. 31, 2022 USD ($)
UL and Other [Member] |
Liability for Future Policy Benefit, Activity [Line Items] |
Unfavorable Impact Primarily From Updates To Policyholder Lapse Behavior Assumptions, Net Of Reinsurance, After-Tax | $ 1.9

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- Definition Unfavorable Impact Primarily From Updates To Policyholder Lapse Behavior Assumptions, Net Of Reinsurance, After-Tax + References No definition available. + Details
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Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=lnc_UlAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |