DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Narrative) (Details)	3 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016	Jan. 31, 2013 USD ($) derivative_instrument	Mar. 31, 2012 USD ($) derivative_instrument
Derivative [Line Items]
Total exposure to floating rate interest rates	1.00%		1.00%
Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts of foreign currency exchange contracts	$ 65,000,000
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	500,000	$ (2,300,000)
Intercompany Loans [Member]
Derivative [Line Items]
Gain (loss) due to the effect of foreign currency exchange rates on intercompany loans	(1,200,000)	800,000
January 2013 Interest-Rate Swap Termination [Member]
Derivative [Line Items]
Number of interest-rate swap agreements terminated | derivative_instrument				8
Notional Amount Related to Discontinuation of Interest Rate Fair Value Hedge				$ 1,000,000,000
Deferred Gain (Loss) on Discontinuation of Interest Rate Fair Value Hedge	0			$ 90,400,000
Amortization of Interest Rate Swap Gains		3,700,000
March 2012 Interest-Rate Swap Termination [Member]
Derivative [Line Items]
Number of interest-rate swap agreements terminated | derivative_instrument					2
Notional Amount Related to Discontinuation of Interest Rate Fair Value Hedge					$ 350,000,000
Deferred Gain (Loss) on Discontinuation of Interest Rate Fair Value Hedge	9,700,000				$ 46,100,000
Amortization of Interest Rate Swap Gains	$ 1,200,000	$ 1,700,000