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]
Income before income taxes	$ 198	$ 295	$ 581	$ 499
Provision for income taxes	$ 46	$ 73	$ 133	$ 115
Effective tax provision rate	23.20%	24.70%	22.90%	23.00%
Unrecognized tax benefits, recognition period			12 months