CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - Parenthetical - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Accounts receivable, reserves	$ 8	$ 8
Property and equipment, accumulated depreciation	$ 89	$ 84
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	675,000,000	675,000,000
Common stock, shares issued (in shares)	111,854,439	111,620,507
Common stock, shares outstanding (in shares)	111,854,439	111,620,507