Income Taxes - Components of Pretax Income and Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ 1,608	$ 1,167	$ 179
International	(1,210)	2,178	1,473
Income from continuing operations before income taxes	398	3,345	1,652
Current:
Federal	472	266	48
State and local	128	87	23
Foreign	228	91	149
Current income tax expense (benefit)	828	444	220
Deferred:
Federal	(755)	(73)	(159)
State and local	(125)	(8)	(44)
Foreign	198	495	202
Deferred income tax expense (benefit)	(682)	414	(1)
Income tax expense (benefit)	$ 146	$ 858	$ 219