Acquisitions - Additional Information (Detail) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended	6 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended									6 Months Ended
	Apr. 26, 2011 USD ($)	Jun. 17, 2011 USD ($) Location	Jun. 17, 2011 USD ($)	Feb. 18, 2011 New Zealand Location	Mar. 25, 2011 New Zealand USD ($) Location Room	Jun. 13, 2011 New Zealand Hotel Novotel Christchurch Cathedral Square Loss from Catastrophes	Feb. 22, 2011 New Zealand Hotel Novotel Christchurch Cathedral Square Loss from Catastrophes Room	Jun. 13, 2011 New Zealand Hotel Novotel Christchurch Cathedral Square and Hotel ibis Christchurch Loss from Catastrophes	Feb. 22, 2011 New Zealand Hotel Novotel Christchurch Cathedral Square and Hotel ibis Christchurch Loss from Catastrophes	Feb. 22, 2011 New Zealand Loss from Catastrophes USD ($)	Apr. 29, 2011 Hilton Melbourne South Wharf USD ($) Room	Apr. 29, 2011 Hilton Melbourne South Wharf AUD	Mar. 25, 2011 New York Helmsley Hotel USD ($) Room	Mar. 25, 2011 Manchester Grand Hyatt San Diego USD ($) Room	Jun. 17, 2011 Subsequent Event Grand Hyatt Washington, DC USD ($) Room	Jun. 17, 2011 Subsequent Event Grand Hyatt Washington, DC Lower Limit sqft
Business Acquisition, Contingent Consideration [Line Items]
Business acquisition date											Apr. 29, 2011
Subsequent event date															Jul. 14, 2011
Number of hotels acquired		1		7	7
Description of loss due to earthquake						The city experienced a second significant earthquake on June 13, 2011. While information about additional damage is limited, we do not believe it was significant and have not accrued any additional losses.	The historic portion (39 rooms) of the Novotel property, have experienced significant damage.	The city experienced a second significant earthquake on June 13, 2011. While information about additional damage is limited, we do not believe it was significant and have not accrued any additional losses.	The properties are expected to remain closed until at least the second quarter of 2012 and potentially longer.	On February 22, 2011, Christchurch, New Zealand experienced an earthquake that resulted in substantial damage to two of the acquired hotels, Hotel Novotel Christchurch Cathedral Square and the Hotel ibis Christchurch. Currently, the hotels remain closed and largely inaccessible, as the New Zealand Ministry of Civil Defense and Emergency Management has restricted access to the area.
Business acquisition description											On April 29, 2011, we acquired a 75% common voting interest and a preferred interest in Plenary Holdings No. 4 Pty Ltd, the joint venture that indirectly owns the 364-room Hilton Melbourne South Wharf, Australia.				The Grand Hyatt, which includes over 43,000 square feet of meeting space, is centrally located in the nation’s capital. The transaction is expected to be completed in September and is subject to customary closing conditions.
Purchase agreement															On July 14, 2011, the Company reached an agreement to acquire the 888-room Grand Hyatt Washington, D.C. for $442 million, which may include the assumption of a $166 million mortgage loan.
Acquisition-related expenses		$ 1	$ 4
Common voting interest acquired											75.00%
Pro-forma - total revenues		55	56
Pro-forma - net income		4	4
Number of rooms					1,207		39				364		775	1,625	888
Voting interest retained by third party											25.00%
Acquisition purchase price					145.0						152.0	142.0	313.5	572.0	442.0
Existing mortgage loan acquired											86	80
Existing mortgage loan that may be assumed															166
Draw on credit facility	50										50
Agreement description											We are entitled to receive a cumulative priority return of 12% based on our initial investment of AUD 45 million ($48 million) plus 75% of the distributable cash after our partner’s subordinated preferred interest.
Cumulative priority return on initial investment											12.00%
Initial investment											48	45
Percentage of proceeds after preferred interests											75.00%
Estimate of maximum insurance deductible amount for property loss										$ 3
Square footage of meeting space which is located in the center of the nation's capital																43,000