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Derivative Instruments (Schedule Of Collateral Amounts With Rights To Reclaim Or Obligation To Return Cash) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	$ 3,222	$ 2,976
Collateral Posted by LNC (Held by Counter-Party)	(587)	(1,061)
AA- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	1,453	1,233
Collateral Posted by LNC (Held by Counter-Party)	(197)	(371)
A+ [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	1,320	1,119
Collateral Posted by LNC (Held by Counter-Party)	(272)	(445)
A [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	60	53
Collateral Posted by LNC (Held by Counter-Party)
A- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	389	571
Collateral Posted by LNC (Held by Counter-Party)	$ (118)	$ (245)

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Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
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Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

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-Publisher FASB
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