Income Taxes - Income Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S. income	$ 4,263	$ 2,280	$ 1,599
Non-U.S. income	572	275	339
Income before income taxes and equity income	$ 4,835	$ 2,555	$ 1,938