Number of Hotels with Rooms, Primarily Consisting of Luxury and Upper Upscale, by Location (Detail)	Mar. 31, 2013 Hotel
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	118
United States
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	103
Australia
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	1
Brazil
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	1
Canada
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	3
Chile
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	2
Mexico
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	1
New Zealand
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	7
European Joint Venture
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	19
European Joint Venture | Belgium
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	3
European Joint Venture | France
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	5
European Joint Venture | Germany
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	1
European Joint Venture | Italy
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	3
European Joint Venture | Poland
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	1
European Joint Venture | Spain
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	2
European Joint Venture | The Netherlands
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	2
European Joint Venture | United Kingdom
Segment Reporting, Other Significant Reconciling Item [Line Items]
Hotels	2