Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current income tax expense:
U.S. federal	$ 2,368	$ 2,455	$ 2,445
U.S. state and local	494	351	339
Non-U.S.	894	662	476
Total current income tax expense	3,756	3,468	3,260
Deferred income tax (benefit) expense:
U.S. federal	(797)	(952)	(763)
U.S. state and local	(146)	(139)	(117)
Non-U.S.	(47)	(238)	(309)
Total deferred income tax (benefit) expense	(990)	(1,329)	(1,189)
Income tax expense (benefit)	$ 2,766	$ 2,139	$ 2,071