Consolidated Variable Interest Entities ("VIEs") and Investments in Affiliates - Schedule of Assets and Liabilities Included in Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Variable Interest Entity [Line Items]
Property and equipment, net	$ 9,193	$ 9,594	[1],[2]	$ 7,975
Cash and cash equivalents	951	346
Restricted cash	30	40
Accounts receivable, net	26	180
Prepaid expenses	39	83
Other assets	60	40
Debt	5,121	3,871
Accounts payable and accrued expenses	147	217
Due to hotel manager	88	159
Other liabilities	134	282
Consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Property and equipment, net	216	221
Cash and cash equivalents	8	13
Restricted cash	2	1
Accounts receivable, net	1	5
Prepaid expenses	1	2
Other assets	1
Debt	207	207
Accounts payable and accrued expenses	5	8
Due to hotel manager		2
Other liabilities	$ 1	$ 2

[1] Excludes $62 million of property and equipment, net classified as held for sale as of December 31, 2019.

[2] Excludes $62 million of property and equipment, net classified as held for sale as of December 31, 2019.