Consolidated Portfolio of Hotels by Location (Detail)	Sep. 30, 2014 Hotel
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	115
European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	20
United States
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	100
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
Belgium | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	3
France | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	4
Germany | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	2
Italy | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	3
Poland | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	1
Spain | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	2
Sweden | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	1
The Netherlands | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	2
United Kingdom | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	2