Separate Accounts (Separate Account Liability) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	$ 79,006
Separate Account, Liability, Ending Balance	76,257	$ 83,489
Variable Annuities
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	74,483	77,086
Premiums and deposits	230	202
Surrenders and withdrawals	(1,941)	(1,853)
Benefit payments	(405)	(387)
Investment performance	(481)	4,313
Policy charges	(473)	(490)
Net transfers from (to) general account	(28)	(28)
Other	4	(9)
Separate Account, Liability, Ending Balance	71,389	78,834
Universal Life Insurance
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	2,484	2,276
Premiums and deposits	19	20
Surrenders and withdrawals	(21)	(21)
Benefit payments	(10)	(5)
Investment performance	(66)	167
Policy charges	(20)	(20)
Net transfers from (to) general account	(3)	(10)
Other	0	0
Separate Account, Liability, Ending Balance	2,383	2,407
Company-Owned Life Insurance
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	1,799	2,148
Premiums and deposits	0	0
Surrenders and withdrawals	(3)	(3)
Benefit payments	(5)	(5)
Investment performance	(31)	112
Policy charges	(17)	(13)
Net transfers from (to) general account	495	(200)
Other	3	0
Separate Account, Liability, Ending Balance	$ 2,241	$ 2,039