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DEBT - SCHEDULE OF DEBT (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Instrument [Line Items] |  |
Total debt | $ 1,292,628 | $ 1,233,100
Debt Issuance Costs, Net | (8,876) | (9,575)
Less current and short-term portion | (26,685) | (56,214)
Total Long-term Debt, Excluding Current Maturities | 1,257,067 | 1,167,311
Secured Debt [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 0 | 24,594
Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Face Amount | 500,000 |
Long-term debt | 500,000 | 500,000
Senior Notes due 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Face Amount | 350,000 |
Long-term debt | $ 350,000 | 350,000
Accounts receivable securitization facility |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 2.00% |
Long-term debt | $ 415,000 | 275,000
Revolving credit facility |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 1.60% |
Long-term debt | $ 0 | 51,598
Foreign Line of Credit [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 26,255 | 30,785
Capital leases |  |
Debt Instrument [Line Items] |  |
Long-term debt | 1,373 | $ 1,123
United States | Secured Debt [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Face Amount | $ 700,000 |
Debt Instrument, Interest Rate, Effective Percentage | 1.00% |

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