Accounts Payable, Accrued Expenses and Other - Summary of Accounts Payable, Accrued Expenses and Other (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Payables And Accruals [Abstract]
Accrued employee compensation and benefits	$ 75	$ 77
Accounts payable	20	24
Bonus point incentive liability	48	59
Due to Hilton	12	19
Income taxes payable	2	8
Other accrued expenses	95	111
Accounts payable, accrued expenses and other	$ 252	$ 298