ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Accrued employee compensation and benefits	$ 122	$ 139
Bonus point incentive liability	54	51
Income taxes payable	11	34
Sales and other taxes payable	150	145
Accrued legal settlements	123	124
Other accrued expenses	300	377
Total	952	1,007
Due to Hilton
Related Party Transaction [Line Items]
Accounts payable	48	54
Nonrelated Party
Related Party Transaction [Line Items]
Accounts payable	$ 144	$ 83