Derivative Instruments (Schedule Of Collateral Amounts With Rights To Reclaim Or Obligation To Return Cash) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	$ 5,574	$ 2,976
Collateral Posted by LNC (Held by Counter-Party)	(721)	(1,061)
AA- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	2,346	1,233
Collateral Posted by LNC (Held by Counter-Party)	(281)	(371)
A+ [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	2,772	1,119
Collateral Posted by LNC (Held by Counter-Party)	(251)	(445)
A [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	456	53
Collateral Posted by LNC (Held by Counter-Party)	(189)
A- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)		571
Collateral Posted by LNC (Held by Counter-Party)		$ (245)