Fair Value Measurements - Additional Information (Detail) $ in Millions	3 Months Ended
	Sep. 30, 2018 USD ($)
Westin New York Grand Central | Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of property, net of selling cost	$ 270
Westin New York Grand Central | Depreciation and Amortization Expense
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment expense	23
Sheraton New York Times Square Hotel | Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of property	495
Sheraton New York Times Square Hotel | Depreciation and Amortization Expense
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment expense	$ 216