Derivative Instruments (Schedule Of Collateral Amounts With Rights To Reclaim Or Obligation To Return Cash) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	$ 3,520	$ 3,200
Collateral Posted by LNL (Held by Counter-Party)	(107)	(157)
AA- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	510	383
Collateral Posted by LNL (Held by Counter-Party)	(5)	(6)
A+ [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	1,781	1,718
Collateral Posted by LNL (Held by Counter-Party)	(97)	(151)
A [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	1,229	1,099
Collateral Posted by LNL (Held by Counter-Party)	$ (5)