Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Applicable income tax expense	$ 49	$ 124	$ 61	$ 344
Effective income tax rate	19.90%	21.50%	20.40%	21.90%