COMMITMENTS AND CONTINGENCIES (Details) (USD $)	12 Months Ended		3 Months Ended		12 Months Ended		1 Months Ended					3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 Litigation Related to Hotel Occupany and Other Taxes [Member] Cases	Dec. 31, 2012 Litigation Related to Anti-trust Violations [Member] Cases	Sep. 30, 2012 Litigation Related to Anti-trust Violations [Member] Cases	Dec. 31, 2013 US Merchant Hotel Business [Member] Litigation Related to Hotel Occupany and Other Taxes [Member]	Dec. 31, 2012 US Merchant Hotel Business [Member] Litigation Related to Hotel Occupany and Other Taxes [Member]	Jan. 31, 2013 City of San Francisco [Member] Litigation Related to Hotel Occupany and Other Taxes [Member]	Jul. 31, 2009 City of San Francisco [Member] Litigation Related to Hotel Occupany and Other Taxes [Member]	Dec. 31, 2013 Cities in Arizona Other then Pheonix [Member] Litigation Related to Hotel Occupany and Other Taxes [Member]	Dec. 31, 2013 UTAH [Member] Litigation Related to Hotel Occupany and Other Taxes [Member]	Dec. 31, 2013 COLORADO [Member] Litigation Related to Hotel Occupany and Other Taxes [Member] GovernmentalUnit	Mar. 31, 2013 HAWAII [Member] Litigation Related to Hotel Occupany and Other Taxes [Member]	Dec. 31, 2012 HAWAII [Member] Litigation Related to Hotel Occupany and Other Taxes [Member]	Sep. 30, 2013 HAWAII [Member] Litigation Related to Hotel Occupany and Other Taxes [Member]	Dec. 31, 2013 Minimum [Member] Litigation Related to Hotel Occupany and Other Taxes [Member] GovernmentalUnit	Dec. 31, 2013 Minimum [Member] State of California [Member] Litigation Related to Hotel Occupany and Other Taxes [Member] GovernmentalUnit
Travel Transaction Taxes
Approximate number of lawsuits brought by or against states, cities and counties over issues involving the payment of hotel occupancy and other taxes		40
Minimum number of municipalities and counties which have initiated audit proceedings											1				79	40
Minimum number of states which have initiated audit proceedings															13
Assessed taxes including interest and penalties (in dollars)							$ 2,700,000	$ 3,400,000				$ 18,700,000	$ 16,500,000
Payments of tax and interest for loss contingency related to travel transaction taxes (in dollars)														20,600,000
Estimated gross profit, since inception (in dollars)					1,900,000,000
Taxing jurisdictions aggregate tax rates low end of range					3.00%
Taxing jurisdictions aggregate tax rates high end of range					18.00%
Reserve for the potential resolution of issues related to travel transaction taxes (in dollars)					55,000,000	56,000,000
Number of currently pending lawsuits that commenced in period		10
Class certification rulings issued, number		2
Loss contingency, claims settled, number		4
Audit notices and administrative procedures, number of cities									12	5
Number of appeals remaining unresolved											15
Loss Contingency Complaints Filed Alleging Antitrust Violations [Abstract]
Loss Contingency Complaint Filed Alleging Antitrust Violations				1
Loss Continency Other Complaints Alleging Antitrust Violations			31
Employment Contracts [Abstract]
Maximum cash severance payments provided for in the employment agreements	$ 30,000,000
Extension period for health and insurance benefits after termination, high end of range (in years)	3 years