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DERIVATIVES (BALANCE SHEET CLASSIFICATION) (Details) - Foreign Exchange [Member] - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
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Designated as Hedging Instruments [Member] | Cash Flow [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative asset (liability) | $ (21,608) | $ (26,256)
Designated as Hedging Instruments [Member] | Cash Flow [Member] | Prepaids And Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative asset (liability) | 69 | 220
Designated as Hedging Instruments [Member] | Cash Flow [Member] | Other assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative asset (liability) | 760 | 393
Designated as Hedging Instruments [Member] | Cash Flow [Member] | Other Current Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative asset (liability) | (14,937) | (15,603)
Designated as Hedging Instruments [Member] | Cash Flow [Member] | Other long-term liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative asset (liability) | (7,500) | (11,266)
Not Designated as Hedging Instruments [Member] | Fair Value [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative asset (liability) | 777 | 1,470
Not Designated as Hedging Instruments [Member] | Fair Value [Member] | Prepaids And Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative asset (liability) | 1,000 | 1,603
Not Designated as Hedging Instruments [Member] | Fair Value [Member] | Other assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative asset (liability) | 0 |
Not Designated as Hedging Instruments [Member] | Fair Value [Member] | Other Current Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative asset (liability) | (223) | $ (133)
Not Designated as Hedging Instruments [Member] | Fair Value [Member] | Other long-term liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative asset (liability) | $ 0 |

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