Supplemental Disclosures of Cash Flow Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental Disclosure of Cash Flow Information [Line Items]
Interest Paid	$ 187	$ 135	$ 123
Income taxes paid	23	15	63
Capital expenditures included within accounts Payable and accrued expenses	$ 6	$ 26	15
Common stock shares issued		978
Mortgage loans assumed		$ 310
Unpaid and accrued dividends		136	206
Hilton Waikoloa Village [Member]
Supplemental Disclosure of Cash Flow Information [Line Items]
Derecognized property and equipment, net		123	3
Hilton Waikoloa Village [Member] | Hilton Grand Vacations [Member]
Supplemental Disclosure of Cash Flow Information [Line Items]
Liability related to derecognized property and equipment, net		$ 135	$ 3