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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING - Summary of Notional Amounts and Fair Value (Details) $ in Millions | Dec. 31, 2017 USD ($)
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Derivative [Line Items] |
Gross notional amount | $ 1,184.8
Derivative, Fair Value, Net | 5.6
Other current assets |
Derivative [Line Items] |
Derivative asset fair value | 5.6
Other current liabilities |
Derivative [Line Items] |
Liabilities at fair value | 0.0
Designated as Hedging Instrument |
Derivative [Line Items] |
Gross notional amount | 805.1
Derivative, Fair Value, Net | 3.5
Designated as Hedging Instrument | Other current assets |
Derivative [Line Items] |
Derivative asset fair value | 3.5
Designated as Hedging Instrument | Other current liabilities |
Derivative [Line Items] |
Liabilities at fair value | 0.0
Not Designated as Hedging Instrument |
Derivative [Line Items] |
Gross notional amount | 379.7
Derivative, Fair Value, Net | 2.1
Not Designated as Hedging Instrument | Other current assets |
Derivative [Line Items] |
Derivative asset fair value | 2.1
Not Designated as Hedging Instrument | Other current liabilities |
Derivative [Line Items] |
Liabilities at fair value | $ 0.0

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