Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Applicable income tax expense	$ 191	$ 165	$ 582	$ 228
Effective income tax rate	21.30%	22.10%	21.60%	21.60%