Debt - Schedule of Debt (Parenthetical) (Detail) - USD ($)		1 Months Ended				9 Months Ended
		Jun. 30, 2021	Jan. 31, 2021	Sep. 30, 2020	May 31, 2020	Sep. 30, 2021		Sep. 30, 2020	Dec. 31, 2020		Oct. 31, 2016
Debt Instrument [Line Items]
Repayment of loan secured						$ 18,000,000		$ 4,000,000
Proceeds from issuance of loan secured						14,000,000		0
Debt instrument, interest rate					0.25%
2019 Term Facility [Member]
Debt Instrument [Line Items]
Debt, gross	[1]					78,000,000			$ 670,000,000
Repayment of loan secured						419,000,000
Debt instrument description of interest rate					LIBOR floor of 25 basis points
Revolver [Member]
Debt Instrument [Line Items]
Debt, gross	[1]					$ 0			601,000,000
Maturity Date, end year	[1],[2]					2023
Debt instrument description of interest rate					LIBOR floor of 25 basis points
Revolver [Member] | Debt Amendment [Member]
Debt Instrument [Line Items]
Line of credit facility, increase in aggregate commitments				$ 75,000,000				75,000,000
Line of credit facility, maximum borrowing capacity				1,075,000,000.000				1,075,000,000.000
Aggregate commitments				$ 901,000,000				901,000,000
Line of credit facility, expiration period				2 years
Debt instrument, maturity date end year				Dec. 31, 2023
Line of credit facility, remaining borrowing capacity				$ 174,000,000				174,000,000
Debt instrument, maturity date start year				Dec. 31, 2021
SF CMBS Loan [Member]
Debt Instrument [Line Items]
Debt, gross						$ 725,000,000	[3]		725,000,000	[3]	$ 725,000,000
Debt instrument, interest rate, stated percentage	[3]					4.11%
HHV CMBS Loan [Member]
Debt Instrument [Line Items]
Debt, gross						$ 1,275,000,000	[3]		$ 1,275,000,000	[3]	$ 1,275,000,000
Debt instrument, interest rate, stated percentage	[3]					4.20%
Hilton Denver City Center Mortgage Loan [Member]
Debt Instrument [Line Items]
Maturity Date, end year						2042
Debt instrument, call date earliest						Aug. 31, 2022
Doubletree Spokane JV Mortgage Loan [Member]
Debt Instrument [Line Items]
Repayment of loan secured		$ 12,000,000
Proceeds from issuance of loan secured		$ 14,000,000
Debt instrument maturity date						Jul. 01, 2026
W Chicago City Centre [Member]
Debt Instrument [Line Items]
Debt instrument default rate			8.25%
Debt instrument, interest rate, stated percentage			4.25%
Debt Instrument, payment			$ 75,000,000
PK Domestic and PK Finance Co-Issuer Inc [Member] | 2025 Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior Secured Notes				$ 650,000,000	$ 650,000,000			650,000,000
PK Domestic and PK Finance Co-Issuer Inc [Member] | 2028 Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior Secured Notes				$ 725,000,000	$ 725,000,000			$ 725,000,000

[1] In May 2020, we amended our credit and term loan facilities to add a LIBOR floor of 25 basis points. Net proceeds from asset sales during the nine months ended September 30, 2021 and the 2029 Senior Secured Notes were used to repay the outstanding balance under the Revolver and a portion of the 2019 Term Facility. Refer to Note 3: “Dispositions and Acquisitions” for additional information.

[2] In September 2020, we increased our aggregate commitments under the Revolver by $75 million to $1.075 billion and extended the maturity date with respect to $901 million of the aggregate commitments for two years to December 2023, including all $75 million of the increased Revolver commitments. The maturity date for the remaining $174 million of commitments under the Revolver is December 2021.

[3] In October 2016, we entered into a $725 million CMBS loan secured by the Hilton San Francisco Union Square and the Parc 55 Hotel San Francisco (“SF CMBS Loan”) and a $1.275 billion CMBS loan secured by the Hilton Hawaiian Village Waikiki Beach Resort (“HHV CMBS Loan”).