Schedule of Accounts Payable and Other Current Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Accounts Payable and Other Current Liabilities [Abstract]
Operating Lease, Liability	$ 479	$ 0
Accounts payable	378	371
Accrued sales and use taxes	223	208
Employee-related Liabilities, Current	195	200
Accrued marketing and commissions, current	191	192
Public liability and property damage insurance liabilities – current	178	149
Deferred lease revenues – current	125	140
Other	437	433
Accounts payable and other current liabilities	$ 2,206	$ 1,693