Derivative Instruments (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Credit Derivatives [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 82
Cash flow hedge, reclassified to earnings, net	0	$ 0
Non-performance Risk Adjustment	0
Exposure Associated With Collateralization Events	$ 0		$ 0
Indexed Annuity [Member]
Credit Derivatives [Line Items]
Derivative term	6 years