Separate Accounts (Separate Account Liability) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	$ 81,690
Separate Account, Liability, Ending Balance	79,006	$ 81,690
Variable Annuities
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	77,086	74,845	$ 101,108
Premiums and deposits	828	762	1,199
Surrenders and withdrawals	(7,836)	(6,073)	(5,965)
Benefit payments	(1,511)	(1,391)	(1,298)
Investment performance	8,150	11,071	(17,878)
Policy charges	(2,109)	(2,098)	(2,227)
Net transfers from (to) general account	(102)	(14)	(131)
Other	(23)	(16)	37
Separate Account, Liability, Ending Balance	74,483	77,086	74,845
Universal Life Insurance
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	2,276	1,970	2,576
Premiums and deposits	80	84	91
Surrenders and withdrawals	(80)	(68)	(55)
Benefit payments	(25)	(18)	(24)
Investment performance	346	405	(519)
Policy charges	(81)	(78)	(78)
Net transfers from (to) general account	(32)	(18)	(21)
Other	0	(1)	0
Separate Account, Liability, Ending Balance	2,484	2,276	1,970
Company-Owned Life Insurance
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	2,148	1,919	2,367
Premiums and deposits	0	0	0
Surrenders and withdrawals	(21)	(20)	(16)
Benefit payments	(22)	(28)	(33)
Investment performance	251	327	(356)
Policy charges	(62)	(58)	(61)
Net transfers from (to) general account	(500)	(1)	13
Other	5	9	5
Separate Account, Liability, Ending Balance	$ 1,799	$ 2,148	$ 1,919