Organization (Schedule of Distribution of Consolidated Hotels) (Details)	Mar. 31, 2013 Rooms
Real Estate Properties [Line Items]
Number of rooms (in rooms)	18,993
Consolidated Hotels [Member]
Real Estate Properties [Line Items]
Number of hotels (in hotels)	65
Number of rooms (in rooms)	18,822
Embassy Suites Hotels® [Member] | Consolidated Hotels [Member]
Real Estate Properties [Line Items]
Number of hotels (in hotels)	35
Number of rooms (in rooms)	9,116
Wyndham® and Wyndham Grand® [Member] | Consolidated Hotels [Member]
Real Estate Properties [Line Items]
Number of hotels (in hotels)	8
Number of rooms (in rooms)	2,526
Holiday Inn® [Member] | Consolidated Hotels [Member]
Real Estate Properties [Line Items]
Number of hotels (in hotels)	5
Number of rooms (in rooms)	1,862
Sheraton® and Westin® [Member] | Consolidated Hotels [Member]
Real Estate Properties [Line Items]
Number of hotels (in hotels)	5
Number of rooms (in rooms)	1,882
DoubleTree by Hilton® and Hilton® [Member] | Consolidated Hotels [Member]
Real Estate Properties [Line Items]
Number of hotels (in hotels)	6
Number of rooms (in rooms)	1,450
Marriott® and Renaissance® [Member] | Consolidated Hotels [Member]
Real Estate Properties [Line Items]
Number of hotels (in hotels)	3
Number of rooms (in rooms)	1,321
Fairmont® [Member] | Consolidated Hotels [Member]
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1
Number of rooms (in rooms)	383
Independent (Morgans/Royalton) [Member] | Consolidated Hotels [Member]
Real Estate Properties [Line Items]
Number of hotels (in hotels)	2
Number of rooms (in rooms)	282