Derivative Instruments (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Credit Derivatives [Line Items]
Cash flow hedge gain (loss) to be reclassified within 12 Months	$ 93
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