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 LNL)	$ 5,564	$ 2,969
Collateral Posted by LNL (Held by Counter-Party)	(44)	(182)
AA- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	2,346	1,232
Collateral Posted by LNL (Held by Counter-Party)		(7)
A+ [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	2,762	1,112
Collateral Posted by LNL (Held by Counter-Party)	(44)	(175)
A [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)	456	53
Collateral Posted by LNL (Held by Counter-Party)
A- [Member]
Credit Derivatives [Line Items]
Collateral Posted by Counter-Party (Held by LNL)		572
Collateral Posted by LNL (Held by Counter-Party)