COMMITMENTS AND CONTINGENCIES (Details) (Litigation Related to Hotel Occupany and Other Taxes [Member], USD $) In Millions, unless otherwise specified	3 Months Ended					1 Months Ended
	Mar. 31, 2012 Cases	Mar. 31, 2012 Minimum [Member] GovernmentalUnit	Mar. 31, 2012 US Merchant Hotel Business [Member]	Dec. 31, 2011 US Merchant Hotel Business [Member]	Mar. 31, 2012 State of California [Member] Minimum [Member] GovernmentalUnit	Jul. 31, 2009 City of San Francisco [Member]	Mar. 31, 2012 Cities in Arizona Other then Pheonix [Member]	Mar. 31, 2012 Utah [Member] GovernmentalUnit
Hotel Occupany and Other Taxes
Approximate number of lawsuits brought by or against states, cities and counties over issues involving the payment of hotel occupancy and other taxes (in cases)	40
Number of consumer class actions (in cases)	1
Minimum number of states which have initiated audit proceedings (in governmental units)		6
Minimum number of municipalities and counties which have initiated audit proceedings (in governmental units)		60			40			5
Assessed taxes including interest and penalties (in dollars)						$ 3.4
Reserve for the potential resolution of issues related to hotel occupancy and other taxes (in dollars)			$ 33.0	$ 33.0
Number of currently pending administrative proceedings that commenced in period (in cases)	3
Audit notices and administrative procedures, number of cities					40		12	13