Derivative Instruments (Hedged Item Offset By Derivatives Achieving Fair Value Hedge Accounting) (Details) - USD ($) $ in Millions		Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Derivative [Line Items]
Fixed maturities, available-for-sale, at fair value	[1]	$ 340,730	$ 316,321
Commercial mortgage and other loans	[1]	62,573	59,305
Policyholders’ account balances		(164,088)	(147,018)
Future policy benefits		(285,474)	(273,281)	$ (253,551)
Carrying Amount of the Hedged Assets (Liabilities)
Derivative [Line Items]
Fixed maturities, available-for-sale, at fair value		227	224
Policyholders’ account balances		(1,598)	(810)
Future policy benefits		(2,515)	(2,441)
Cumulative Adjustment Included in Carrying Amount
Derivative [Line Items]
Fixed maturities, available-for-sale, at fair value		19	19
Policyholders’ account balances		223	219
Future policy benefits		$ 189	$ 298

[1] See Note 4 for details of balances associated with variable interest entities.