Organization and Basis of Presentation - Summary of Number of Owned and Joint Venture Hotels and Number of Rooms at Such Hotels (Detail)	Sep. 30, 2020 Hotel Room	Dec. 31, 2019 Room Hotel	Sep. 30, 2019 Hotel Room
Real Estate Properties [Line Items]
Number of hotels | Hotel	220	271	290
Number of rooms | Room	29,000	35,000	37,300
Owned
Real Estate Properties [Line Items]
Number of hotels | Hotel	219	270	289
Number of rooms | Room	28,800	34,800	37,100
Joint Venture
Real Estate Properties [Line Items]
Number of hotels | Hotel	1	1	1
Number of rooms | Room	200	200	200