INVESTMENT IN HOTEL PROPERTIES, NET INVESTMENT IN HOTEL PROPERTIES, NET - Assets held for sale narrative (Details) $ in Millions					3 Months Ended
	Feb. 11, 2016 USD ($) Room installment option Property	Jan. 19, 2016 USD ($) Room	Dec. 29, 2015 USD ($) Room Property	Oct. 20, 2015 USD ($) Room	Mar. 31, 2016 USD ($)	Apr. 11, 2016 USD ($)	Dec. 31, 2015 USD ($) contract Property	Oct. 15, 2015 USD ($) Room Property	Jun. 02, 2015 USD ($) contract Room Closing Property
Business Acquisition [Line Items]
Total realized and deferred gain on disposal	$ 56.8
Gain on sale					$ 36.8
Deferred gain on sale of property					$ 20.0
Number of notes receivable | contract							2
Portfolio of Hotels, ARCH Agreements
Business Acquisition [Line Items]
Number of hotels | Property	6
Number of guestrooms | Room	707
Aggregate sales price	$ 108.3
Receivable portion applied toward sale of hotel properties transaction by borrower	20.0
Portfolio of Hotels, Reinstatement Agreement, New ARCH Purchaser
Business Acquisition [Line Items]
Earnest money deposits	$ 7.5
Assets held-for-sale | Portfolio of Hotels, ARCH Agreements
Business Acquisition [Line Items]
Number of agreements | contract									2
Number of hotels | Property	6								26
Number of guestrooms | Room									2,793
Aggregate sales price	$ 108.3								$ 347.4
Number of closings | Closing									3
Earnest money deposits forfeited			$ 9.1
Note receivable	20.0
Assets held-for-sale | Portfolio of Hotels, ARCH Agreements, First Closing
Business Acquisition [Line Items]
Number of hotels | Property								10
Number of guestrooms | Room								1,090
Aggregate sales price								$ 150.1
Assets held-for-sale | Portfolio of Hotels, Reinstatement Agreement, New ARCH Purchaser
Business Acquisition [Line Items]
Number of hotels | Property			10
Aggregate sales price			$ 89.1
Earnest money deposits	$ 7.5
Number of properties currently under contracts for sale | Property	2
Assets held-for-sale | Portfolio of Hotels, ARCH Agreements, Terminated Purchase Agreement
Business Acquisition [Line Items]
Number of guestrooms | Room			996
Earnest money deposits forfeited			$ 9.1
Reverse and forward 1031 Exchanges
Business Acquisition [Line Items]
Deferred taxable gain on sale of hotels		$ 74.0
Emporia, KS | Assets held-for-sale
Business Acquisition [Line Items]
Number of hotels | Property							2
Courtyard by Marriott | Atlanta, GA | Reverse and forward 1031 Exchanges
Business Acquisition [Line Items]
Number of guestrooms | Room				179
Purchase price				$ 44.0
Courtyard by Marriott | Nashville, TN | Reverse and forward 1031 Exchanges
Business Acquisition [Line Items]
Number of guestrooms | Room		226
Purchase price		$ 71.0
Mortgage loan
Business Acquisition [Line Items]
Repayments of debt	$ 5.8
Loan | Portfolio of Hotels, Reinstatement Agreement, New ARCH Purchaser
Business Acquisition [Line Items]
Note receivable	27.5
Repayment of loan	$ 5.0
Number of installments for repayment of loan | installment	5
Monthly principal payment	$ 1.0
Maximum maturity date extension	2 years
Number of extension options | option	2
Term of extension option	1 year
Accrued interest rate on unpaid principal balance of debt from loan date to initial maturity date	13.00%
Accrued interest rate on unpaid principal balance of debt for first extension period	14.00%
Accrued interest rate on unpaid principal balance of debt for second extension period	15.00%
Accrued interest percentage of amount to be paid monthly	9.00%
Remaining accrued interest rate on unpaid principal balance of debt for first extension period	4.00%
Remaining accrued interest rate on unpaid principal balance of debt for second extension period	5.00%
Remaining accrued interest percentage of amount to be paid monthly	6.00%
Revolving Credit Facility | Unsecured debt | Reverse and forward 1031 Exchanges
Business Acquisition [Line Items]
Pay-down of credit facility	$ 105.0
Other Assets
Business Acquisition [Line Items]
Note receivable							$ 2.7
Subsequent Event | Emporia, KS | Assets held-for-sale
Business Acquisition [Line Items]
Aggregate sales price						$ 4.5