Derivative Instruments (Schedule Of Collateral Amounts With Rights To Reclaim Or Obligation To Return Cash) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	$ 4,815	$ 3,273
Collateral Posted by LNC (Held by Counter-Party)	(481)	(172)
AA- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	1,061	383
Collateral Posted by LNC (Held by Counter-Party)	(42)	(6)
A+ [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	3,528	1,718
Collateral Posted by LNC (Held by Counter-Party)	(390)	(166)
A [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	168	1,172
Collateral Posted by LNC (Held by Counter-Party)	(49)
A- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNC)	58
Collateral Posted by LNC (Held by Counter-Party)