Accounts Payable, Accrued Expenses and Other - Summary of Accounts Payable, Accrued Expenses and Other (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Accrued employee compensation and benefits		$ 138	$ 75
Accounts payable		63	20
Bonus point incentive liability		44	48
Due to Hilton		33	12
Income taxes payable		23	2
Sales & Other Taxes Payable		100	7
Other accrued expenses		272	88
Accounts payable, accrued expenses and other	[1]	$ 673	$ 252

[1] Other accrued expenses includes interest payables, accrued marketing expenses, and various accrued liabilities which are primarily driven by the Diamond Acquisition.