Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Accrued Expenses And Other Current Liabilities [Abstract]
Wage and other employee-related accrued expenses	$ 32		$ 41
Accrued tax expense	42		91
Accrued insurance	27		31
Accrued interest expense	57		47
Dealer deposits	23		18
Accrued environmental expense	6		6
Other	32		65
Total	$ 219	$ 298	$ 299