DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Notional Amounts (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Aug. 31, 2015	Aug. 01, 2015	Dec. 31, 2014	Dec. 01, 2014
Derivatives, Fair Value [Line Items]
Notional Amount			$ 309,000		$ 22,000
Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Notional Amount		$ 170,000
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign currency exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 25,840			$ 28,540
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign currency option contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	129,100			79,400
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	350,000			0
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Foreign currency exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	22,320			27,419
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Foreign currency option contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	308,647			0
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 121,163			$ 161,968