DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Narrative) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	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%
Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts of foreign currency exchange contracts	$ 34,000,000		$ 34,000,000
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	1,700,000	$ 5,200,000	2,200,000	$ 7,500,000
Intercompany Loans [Member]
Derivative [Line Items]
Gain (loss) due to the effect of foreign currency exchange rates on intercompany loans	(2,700,000)	4,600,000	(3,900,000)	5,400,000
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		3,700,000		7,400,000
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	8,500,000		8,500,000				$ 46,100,000
Amortization of Interest Rate Swap Gains	$ 1,200,000	$ 1,700,000	$ 2,400,000	$ 3,400,000