Business Segment Information - Reconciliation of Revenues from Consolidated Hotels to Condensed Combined Consolidated Amounts and Net Loss to Hotel Adjusted EBITDA (Detail) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Reconciliation of Revenue and Adjusted EBITDA from Segments to Consolidated Amounts [Line Items]
Total revenues		$ 323		$ 42		$ 488	$ 641
Net loss		(114)	$ (191)	(261)	$ (689)	(305)	(950)
Depreciation and amortization expense		71		75		145	150
Corporate general and administrative expense	[1]	16		14		34	28
Impairment loss and casualty gain, net		5		0		5	694
Other operating expenses		13		4		20	25
Gain on sales of assets, net		(6)		(1)		(6)	(63)
Interest income		0		(1)		0	(2)
Interest expense		66		50		129	90
Equity in losses from investments in affiliates		2		8		6	9
Income tax expense		0		(3)		(1)	(13)
Severance expense		0		0		0	2
Other loss, net		2		1		2	3
Other items		(1)		3		(5)	6
Hotel Adjusted EBITDA		42		(108)		6	(17)
Total consolidated hotel revenue [Member]
Reconciliation of Revenue and Adjusted EBITDA from Segments to Consolidated Amounts [Line Items]
Total revenues		311		39		468	619
Other [Member]
Reconciliation of Revenue and Adjusted EBITDA from Segments to Consolidated Amounts [Line Items]
Total revenues		$ 12		$ 3		$ 20	$ 22

[1] Excludes severance expense.