Accounts Payable and Other Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Accounts Payable and Accrued Liabilities, Current [Abstract]
Short-term operating lease liabilities	$ 519	$ 514
Accounts payable	458	394
Accrued sales and use taxes	214	215
Public liability and property damage insurance liabilities – current	166	162
Deferred lease revenues – current	151	70
Accrued payroll and related	136	117
Accrued advertising and marketing	124	122
Other	403	440
Accounts payable and other current liabilities	$ 2,171	$ 2,034