Income Taxes - Schedule of reconciliation between actual income tax (benefit) expense and statutory U.S. federal amount computed by applying the federal income tax rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Consolidated total amount, pre-tax income (loss)	$ 3,858	$ 14,298	$ 13,347
U.S. federal income tax at statutory rate	$ 810	$ 3,003	$ 2,802
U.S. federal income tax at statutory rate (as a percent)	21.00%	21.00%	21.00%
Tax exempt interest	$ (14)	$ (18)	$ (18)
Tax exempt interest (as a percent)	(0.40%)	(0.10%)	(0.10%)
Uncertain tax positions	$ 162	$ (17)	$ (9)
Uncertain tax positions (as a percent)	4.20%	(0.10%)	(0.10%)
Reclassifications from AOCI	$ (45)	$ (81)	$ (109)
Reclassifications from AOCI (as a percent)	(1.20%)	(0.60%)	(0.80%)
Dispositions of subsidiaries(b)	$ (382)	$ 0	$ 11
Dispositions of subsidiaries (as a percent)	(9.90%)	0.00%	0.10%
Non-controlling interest	$ 14	$ (31)	$ (97)
Non-controlling interest income ( as a percent)	0.40%	(0.20%)	(0.70%)
Non-deductible transfer pricing charges	$ 16	$ 12	$ 16
Non-deductible transfer pricing charges (as a percent)	0.40%	0.10%	0.10%
Dividends received deduction	$ (60)	$ (36)	$ (37)
Dividends received deduction (as a percent)	(1.60%)	(0.30%)	(0.30%)
Effect of foreign operations(c)	$ 176	$ 150	$ 136
Effect of foreign operations (as a percent)	4.60%	1.00%	1.00%
Share-based compensation payments excess tax effect	$ (31)	$ (19)	$ 16
Share-based compensation payments excess tax effect (as a percent)	(0.80%)	(0.10%)	0.10%
State and local income taxes	$ 10	$ 47	$ 38
State income taxes (as a percent)	0.30%	0.30%	0.30%
Expiration of tax attribute carryforwards	$ 0	$ 0	$ 16
Expiration of tax attribute carryforwards (as a percent)	0.00%	0.00%	0.10%
Tax audit resolution(a)	$ (494)	$ 0	$ (935)
Tax audit resolution (as a percent)	(12.80%)	0.00%	(7.00%)
Affiliated dividend income, net of dividends received deduction	$ 59	$ 0	$ 0
Affiliated dividend income, net of dividends received deduction (as a percent)	1.50%	0.00%	0.00%
Other	$ 116	$ 40	$ (107)
Other (as a percent)	3.10%	0.40%	(0.80%)
Continuing operations	$ (357)	$ (25)	$ 718
Continuing operations (as a percent)	(9.30%)	(0.20%)	5.40%
Income (Loss) from Continuing and Discontinued Operations before Income Taxes Extraordinary Items Noncontrolling Interest	$ 3,858	$ 14,298	$ 13,347
Consolidated total amount, tax expense (benefit)	$ (20)	$ 3,025	$ 2,441
Consolidated total amount (as a percent)	(0.50%)	21.20%	18.30%
Amounts attributable to discontinued operations, pre-tax income (loss)	$ 0	$ (1)	$ 0
Amounts attributable to discontinued operations, tax expense (benefit)	$ 0	$ 0	$ 0
Amounts attributable to discontinued operations (as a percent)	0.00%	0.00%	0.00%
Income from continuing operations before income tax expense (benefit)	$ 3,858	$ 14,299	$ 13,347
Income tax expense (benefit)	$ (20)	$ 3,025	$ 2,441
Effective tax rates on income from continuing operations (as a percent)	(0.50%)	21.20%	18.30%