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, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Consolidated total amount, pre-tax income (loss)	$ 14,281	$ 12,099	$ (7,288)
U.S. federal income tax at statutory rate	$ 2,999	$ 2,540	$ (1,531)
U.S. federal income tax at statutory rate (as a percent)	21.00%	21.00%	21.00%
Tax exempt interest	$ (18)	$ (18)	$ (19)
Tax exempt interest (as a percent)	(0.10%)	(0.10%)	0.30%
Uncertain tax positions	$ (17)	$ (9)	$ 165
Uncertain tax positions (as a percent)	(0.10%)	(0.10%)	(2.30%)
Reclassifications from AOCI	$ (81)	$ (109)	$ (101)
Reclassifications from AOCI (as a percent)	(0.60%)	(0.90%)	1.40%
Dispositions of subsidiaries	$ 0	$ 11	$ 180
Dispositions of subsidiaries (as a percent)	0.00%	0.10%	(2.50%)
Non-controlling interest	$ (31)	$ (97)	$ (12)
Non-controlling interest income ( as a percent)	(0.20%)	(0.80%)	0.20%
Non-deductible transfer pricing charges	$ 12	$ 16	$ 11
Non-deductible transfer pricing charges (as a percent)	0.10%	0.10%	(0.20%)
Dividends received deduction	$ (36)	$ (37)	$ (39)
Dividends received deduction (as a percent)	(0.30%)	(0.30%)	0.50%
Effect of foreign operations	$ 149	$ 134	$ 76
Effect of foreign operations (as a percent)	1.00%	1.10%	(1.00%)
Share-based compensation payments excess tax effect	$ (19)	$ 16	$ 35
Share-based compensation payments excess tax effect (as a percent)	(0.10%)	0.10%	(0.50%)
State income taxes	$ 33	$ 37	$ 15
State income taxes (as a percent)	0.20%	0.30%	(0.20%)
Expiration of tax attribute carryforwards	$ 0	$ 16	$ 221
Expiration of tax attribute carryforwards (as a percent)	0.00%	0.10%	(3.00%)
Tax audit resolution	$ 0	$ (935)	$ (379)
Tax audit resolution (as a percent)	0.00%	(7.60%)	5.20%
Other	$ 40	$ (107)	$ (16)
Other (as a percent)	0.30%	(0.90%)	0.20%
Effect of discontinued operations	$ 0	$ 0	$ 0
Effect of discontinued operations (as a percent)	0.00%	0.00%	0.00%
Continuing operations	$ (25)	$ 718	$ (65)
Continuing operations (as a percent)	(0.20%)	5.90%	0.90%
Consolidated total amount, tax expense (benefit)	$ 3,006	$ 2,176	$ (1,459)
Consolidated total amount (as a percent)	21.00%	18.00%	20.00%
Amounts attributable to discontinued operations, pre-tax income (loss)	$ (1)	$ 0	$ 5
Amounts attributable to discontinued operations, tax expense (benefit)	$ 0	$ 0	$ 1
Amounts attributable to discontinued operations (as a percent)	0.00%	0.00%	20.00%
Income (loss) from continuing operations before income tax expense (benefit)	$ 14,282	$ 12,099	$ (7,293)
Income tax expense (benefit)	$ 3,006	$ 2,176	$ (1,460)
Effective tax rates on income from continuing operations (as a percent)	21.00%	18.00%	20.00%
Charges related to accrual of income tax interest			$ 67
Unrecognized tax benefits interest on income taxes accrued tax expense reported in uncertain tax positions			139
Unrecognized tax benefits interest on income taxes accrued, tax benefit reported in other			$ 72