Organization (Details)		12 Months Ended
	Aug. 31, 2017 Rooms	Dec. 31, 2018 property state room shares
Sale of Stock
Number of OP units outstanding (in shares) | shares		174,792,809
Company's ownership interest in the Operating Partnership		99.60%
Number of properties owned		151
Number of hotel rooms owned | room		28,800
Number of states in which hotels owned by the entity are located | state		25
The Knickerbocker New York [Member]
Sale of Stock
Number of hotel rooms owned | Rooms	330
Ownership interest in assets	95.00%
Wholly Owned Properties [Member]
Sale of Stock
Number of properties owned		147
Ownership interest in assets		100.00%
Partially Owned Properties [Member] | Doubletree Metropolitan Hotel New York City
Sale of Stock
Ownership interest in assets		98.30%
Partially Owned Properties [Member] | Ninety Five Percent Owned [Member] | The Knickerbocker New York [Member]
Sale of Stock
Ownership interest in assets		95.00%
Partially Owned Properties [Member] | Fifty Percent Owned [Member]
Sale of Stock
Ownership interest in assets		50.00%
Consolidated Properties [Member]
Sale of Stock
Number of properties owned		149
Unconsolidated Properties [Member]
Sale of Stock
Number of properties owned		2
Ownership interest in assets		50.00%
Leased Hotel Properties [Member]
Sale of Stock
Number of properties owned		150