Fair Value Measurements - Estimated Fair Values of Assets Measured on Nonrecurring Basis (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment Loss, Property and equipment	$ 88
Goodwill impairment loss	607
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Property and equipment	24	[1]
Fair Value, Total	24
Impairment Loss, Property and equipment	88	[1]
Goodwill impairment loss	607	[2]
Impairment Loss, Total	$ 695

[1] Fair value of our property and equipment as of March 31, 2020 was measured using significant unobservable inputs (Level 3). We estimated fair value of the assets using discounted cash flow analyses, with an estimated stabilized growth rate of 3%, a discounted cash flow term between 1.7 to 10 years, terminal capitalization rate ranging from 7.25% to 7.75%, and discount rates ranging from 9.5% to 12.5%. The discount and terminal capitalization rates used for the fair value of the assets reflected the risk profile of the markets where these properties are located.

[2] Fair value of our consolidated and unconsolidated hotel reporting units was measured using significant unobservable inputs (Level 3) for three months ended March 31, 2020, which included discounted cash flows, terminal capitalization rates, and discount rates.