Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

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Fixed interest rate related to the interest rate derivative.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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The number of derivative instruments of a particular group held by the entity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of interest rate derivative instruments held by the entity at the reporting date.

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DERIVATIVE FINANCIAL INSTRUMENTS (Details) $ in Millions	Sep. 30, 2016 USD ($) derivative interest_rate_swap	Dec. 31, 2015 USD ($)
Derivatives, Fair Value [Line Items]
Accumulated other comprehensive income - unrealized loss on valuation of swap agreements	$ 12.8	$ 4.5
Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative financial instruments, liabilities	$ 13.8	5.9
Prepaid Expenses and Other Assets
Derivatives, Fair Value [Line Items]
Derivative financial instruments, assets		$ 0.8
Cash Flow Hedging \| Variable-Rate Derivatives \| Minimum
Derivatives, Fair Value [Line Items]
Derivative, cap interest rate	3.00%
Cash Flow Hedging \| Variable-Rate Derivatives \| Maximum
Derivatives, Fair Value [Line Items]
Derivative, cap interest rate	4.00%
Interest Rate Swap \| Cash Flow Hedging \| Fixed-Rate Derivatives
Derivatives, Fair Value [Line Items]
Number of interest rate swaps (in interest rate swaps) \| interest_rate_swap	18
Notional amount of interest rate cash flow hedge derivatives	$ 366.2
Interest Rate Swap \| Cash Flow Hedging \| Fixed-Rate Derivatives \| Minimum
Derivatives, Fair Value [Line Items]
Derivative, fixed interest rate	1.20%
Interest Rate Swap \| Cash Flow Hedging \| Fixed-Rate Derivatives \| Maximum
Derivatives, Fair Value [Line Items]
Derivative, fixed interest rate	3.80%
Interest Rate Swap \| Cash Flow Hedging \| Variable-Rate Derivatives
Derivatives, Fair Value [Line Items]
Notional amount of interest rate cash flow hedge derivatives	$ 59.4
Derivative, number of instruments held (derivative) \| derivative	2
Reclassification out of Accumulated Other Comprehensive Income
Derivatives, Fair Value [Line Items]
Accumulated other comprehensive income - unrealized loss on valuation of swap agreements	$ (4.1)