Separate Accounts (Separate Account Liability) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	$ 81,690
Separate Account, Liability, Ending Balance	83,439	$ 76,602
Variable Annuities
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	77,086	74,845
Premiums and deposits	593	596
Surrenders and withdrawals	(5,747)	(4,398)
Benefit payments	(1,144)	(1,068)
Investment performance	9,279	3,981
Policy charges	(1,592)	(1,592)
Net transfers from (to) general account	(78)	(6)
Other	(25)	(2)
Separate Account, Liability, Ending Balance	78,372	72,356
Universal Life Insurance
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	2,276	1,970
Premiums and deposits	60	63
Surrenders and withdrawals	(59)	(53)
Benefit payments	(17)	(13)
Investment performance	338	174
Policy charges	(62)	(58)
Net transfers from (to) general account	(27)	(13)
Other	0	0
Separate Account, Liability, Ending Balance	2,509	2,070
Company-Owned Life Insurance
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	2,148	1,919
Premiums and deposits	0	0
Surrenders and withdrawals	(6)	(11)
Benefit payments	(16)	(21)
Investment performance	240	175
Policy charges	(48)	(45)
Net transfers from (to) general account	(5)	0
Other	6	6
Separate Account, Liability, Ending Balance	$ 2,319	$ 2,023