Leases - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended		12 Months Ended		12 Months Ended		1 Months Ended
	Dec. 31, 2012 Y	Dec. 31, 2012 Lower Limit Contract	Dec. 31, 2012 Courtyard By Marriott Hotel Property	Dec. 31, 1995 Courtyard By Marriott Hotel Leasehold Interest Property	Dec. 31, 2010 Residence Inn By Marriott Property	Dec. 31, 2011 Hospitality Properties Trust	Jul. 30, 2012 New York Marriott Marquis Vornado Realty Trust	Dec. 31, 2012 New York Marriott Marquis Vornado Realty Trust	Dec. 31, 2012 Property Subject to Operating Lease Upper Limit Hotel
Leases Disclosure [Line Items]
Lease term							20 years
Future minimum rental revenue under the non-cancelable lease on an annual basis							$ 12.5
Liability based on fair value of future payment obligations								62
Number of hotels subject to ground leases									38
Number of properties			53	53	18
Rental revenue						7
Deferred sale proceeds received			51.0		17.2
Tenant collections accounts			11
Working capital			5
Operating leases information	Leases and subleases contain one or more renewal options
Number of renewal options		1
Minimum additional renewal option period	5
Maximum additional renewal option period	10
Aggregate contingent liabilities relating to our former restaurant business	21
Minimum payments from restaurants and the Sublessee payable to us under non-cancelable subleases	$ 4