Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Effective tax rate (as a percent)	18.80%	16.40%
Effective tax rate, increase (decrease) from comparative period (as a percent)	2.40%
Unrecognized tax benefits that would affect the effective tax rate	$ 1,150		$ 1,112
Deferred tax assets valuation allowance	$ 141		$ 142