Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Applicable income tax expense	$ 165	$ 140	$ 228	$ 483
Effective income tax rate	22.10%	20.20%	21.60%	21.40%