Acquisitions - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			1 Months Ended	6 Months Ended	1 Months Ended
	Sep. 09, 2011 USD ($)	Sep. 10, 2010 USD ($)	Sep. 09, 2011 USD ($)	Sep. 10, 2010 USD ($)	Jun. 17, 2011	Feb. 18, 2011 New Zealand Location	Jun. 17, 2011 New Zealand USD ($) Location Room	Jul. 14, 2011 Grand Hyatt Washington, DC USD ($) Room	Jul. 14, 2011 Grand Hyatt Washington, DC Lower Limit sqft	Jun. 17, 2011 Hilton Melbourne South Wharf USD ($) Room	Jun. 17, 2011 Hilton Melbourne South Wharf AUD	Jun. 17, 2011 New York Helmsley Hotel USD ($) Room	Jun. 17, 2011 Manchester Grand Hyatt San Diego USD ($) Room
Business Acquisition, Contingent Consideration [Line Items]
Purchase agreement								On July 14, 2011, we reached an agreement to acquire the 888-room Grand Hyatt Washington, D.C. for $442 million, which includes a $15 million deposit and may include the assumption of a $166 million mortgage loan.
Number of hotels acquired						7	7
Number of rooms							1,207	888		364	364	775	1,625
Acquisition purchase price								$ 442
Acquisition purchase price							145.0			152.0	142.0	313.5	572.0
Deposits for acquisitions								15
Existing mortgage loan that may be assumed								166
Description of Transaction								The Grand Hyatt, which includes over 43,000 square feet of meeting space, is centrally located in the nation's capital. We recently amended the purchase agreement to extend the closing to December 14, 2011, subject to customary closing conditions. To the extent that the transaction does not close, we would lose our $15 million deposit.
Common voting interest acquired					25.00%
Acquisition-related expenses		3	4	3
Pro-forma - total revenues	72		128
Pro-forma - net income	$ 7		$ 11
Square footage of meeting space which is located in the center of the nation's capital									43,000