Derivative Instruments (Schedule Of Collateral Amounts With Rights To Reclaim Or Obligation To Return Cash) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	$ 4,506	$ 3,200
Collateral Posted by LNL (Held by Counter-Party)	(311)	(157)
AA- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	980	383
Collateral Posted by LNL (Held by Counter-Party)	(12)	(6)
A+ [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	3,460	1,718
Collateral Posted by LNL (Held by Counter-Party)	(258)	(151)
A [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	66	1,099
Collateral Posted by LNL (Held by Counter-Party)	$ (41)