Derivative Instruments (Schedule Of Collateral Amounts With Rights To Reclaim Or Obligation To Return Cash) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	$ 4,767	$ 5,564
Collateral Posted by LNL (Held by Counter-Party)	(79)	(44)
AA- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	2,126	2,346
Collateral Posted by LNL (Held by Counter-Party)	(1)
A+ [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	2,362	2,762
Collateral Posted by LNL (Held by Counter-Party)	(78)	(44)
A [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	279	456
Collateral Posted by LNL (Held by Counter-Party)