Accrued Expenses and Other Liabilities and Other Long-Term Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Accrued expenses and other liabilities
Self-insurance accruals	$ 46	$ 42
Accrued compensation and benefit costs	127	128
Property and income taxes payable	103	25
Restructuring reserves	31	33
Interest payable	147	131
Deferred revenue	56	46
National accounts accrual	69	50
Other	98	81
Accrued expenses and other liabilities	677	536
Other long-term liabilities
Self-insurance accruals	60	58
Income taxes payable	14	52
Accrued compensation and benefit costs	9	10
Other long-term liabilities	$ 83	$ 120