Income Taxes - Earnings Before Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ (1,644)	$ (4,467)	$ (2,784)
Foreign	14,633	7,865	11,210
Earnings before income tax expense	$ 12,989	$ 3,398	$ 8,426