DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	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%		1.00%
Loss on extinguishment, amortization of deferred hedge gain		$ 12,800,000
Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts of foreign currency exchange contracts	$ 26,000,000		$ 26,000,000
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	600,000	(1,200,000)	2,800,000	$ (8,700,000)
Intercompany Loans [Member]
Derivative [Line Items]
Gain (loss) due to the effect of foreign currency exchange rates on intercompany loans	(1,200,000)	100,000	(4,700,000)	5,500,000
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		0			$ 90,400,000
Amortization of Interest Rate Swap Gains		11,700,000		19,100,000
Loss on extinguishment, amortization of deferred hedge gain		9,200,000		9,200,000
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	7,200,000		7,200,000				$ 46,100,000
Amortization of Interest Rate Swap Gains	$ 1,200,000	5,100,000	$ 3,600,000	8,500,000
Loss on extinguishment, amortization of deferred hedge gain		$ 3,600,000		$ 3,600,000