DERIVATIVE FINANCIAL INSTRUMENTS Narratives (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Cash flow hedge gain (loss) to be reclassified within twelve months	$ 2.0
Derivatives designated as hedges | Foreign exchange contracts
Derivative [Line Items]
Derivative notional amount	258.5	$ 245.5
Derivatives not designated as hedges | Foreign exchange contracts
Derivative [Line Items]
Derivative notional amount	$ 74.1	$ 339.7