Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Deferred financing costs, current, accumulated amortization	$ 4	$ 3
Class A common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Class A common stock, shares authorized (in Shares)	500,000,000	500,000,000
Class A common stock, shares outstanding (in Shares)	98,240,118	98,051,629
Treasury stock (in Shares)	249,481	223,040