Separate Accounts (Separate Account Liability) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	$ 88,271
Separate Account, Liability, Ending Balance	88,260	$ 88,392
Variable Annuities
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	79,990	77,653
Premiums and deposits	417	408
Surrenders and withdrawals	(3,990)	(3,010)
Benefit payments	(788)	(740)
Investment performance	5,028	7,211
Policy charges	(1,060)	(1,076)
Net transfers from (to) general account	(59)	(11)
Other	(16)	(12)
Separate Account, Liability, Ending Balance	79,522	80,423
Universal Life Insurance
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	5,921	5,218
Premiums and deposits	77	83
Surrenders and withdrawals	(112)	(91)
Benefit payments	(31)	(33)
Investment performance	510	654
Policy charges	(103)	(104)
Net transfers from (to) general account	(31)	(22)
Other	0	0
Separate Account, Liability, Ending Balance	6,231	5,705
Company-Owned Life Insurance
Separate Account, Liability [Line Items]
Separate Account, Liability, Beginning Balance	2,162	1,932
Premiums and deposits	0	0
Surrenders and withdrawals	(5)	(7)
Benefit payments	(12)	(16)
Investment performance	148	212
Policy charges	(26)	(24)
Net transfers from (to) general account	1	0
Other	(1)	(4)
Separate Account, Liability, Ending Balance	$ 2,267	$ 2,093