Annual report pursuant to Section 13 and 15(d)

DERIVATIVE INSTRUMENTS Derivative Instruments (Details)

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DERIVATIVE INSTRUMENTS Derivative Instruments (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]    
Derivative Instrument [Line Items]    
Notional amounts $ 72.4 $ 173.8