Separate Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Separate Account, Liability [Roll Forward]
Beginning balance	$ 93,133
Net transfers (from) to the separate account	(1,149)	$ (523)
Ending balance	101,676	93,133
Assets held in separate accounts	101,676	93,133
U.S. Government agencies and authorities
Separate Account, Liability [Roll Forward]
Assets held in separate accounts	913	1,015
Corporate and foreign debt securities
Separate Account, Liability [Roll Forward]
Assets held in separate accounts	2,493	2,528
Mortgage-backed securities | Mortgage-Backed Securities, Issued by Private Enterprises
Separate Account, Liability [Roll Forward]
Assets held in separate accounts	3,087	3,231
Equity securities (including mutual funds)
Separate Account, Liability [Roll Forward]
Assets held in separate accounts	94,685	85,916
Cash, cash equivalents and short-term investments
Separate Account, Liability [Roll Forward]
Assets held in separate accounts	437	399
Receivable for securities and accruals
Separate Account, Liability [Roll Forward]
Assets held in separate accounts	61	44
Wealth Solutions
Separate Account, Liability [Roll Forward]
Beginning balance	89,485	76,348
Premiums and deposits	10,861	10,992
Fee income	(520)	(460)
Surrenders, withdrawals and benefits	(13,915)	(10,973)
Net transfers (from) to the separate account	(1,461)	(518)
Investment performance	13,207	14,096
Ending balance	97,657	89,485
Cash surrender value	90,734	82,286
Other
Separate Account, Liability [Roll Forward]
Beginning balance	3,648
Ending balance	4,019	3,648
Wealth Solutions Stabilizer | Wealth Solutions
Separate Account, Liability [Roll Forward]
Beginning balance	7,175	7,196
Premiums and deposits	891	940
Fee income	(33)	(34)
Net transfers (from) to the separate account	0	0
Investment performance	244	415
Ending balance	6,901	7,175
Separate Account, Liability, Surrender	1,376	1,342
Wealth Solutions Deferred Annuity | Wealth Solutions
Separate Account, Liability [Roll Forward]
Beginning balance	82,310	69,152
Premiums and deposits	9,970	10,052
Fee income	(487)	(426)
Net transfers (from) to the separate account	(1,461)	(518)
Investment performance	12,963	13,681
Ending balance	90,756	82,310
Separate Account, Liability, Surrender	$ 12,539	$ 9,631