Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Accrued Expenses And Other Current Liabilities [Abstract]
Wage and other employee-related accrued expenses	$ 41	$ 42
Franchise agreement termination accrual	2	2
Accrued tax expense	187	154
Accrued insurance	14	23
Reserve for environmental remediation, current	3	5
Accrued interest expense	40	39
Deposits and other	65	107
Total	$ 352	$ 372