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DEBT - SCHEDULE OF DEBT (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Aug. 27, 2009
Debt Instrument [Line Items]
Long-term debt	$ 1,401,781
Total debt	1,401,781	$ 1,501,100
Debt Issuance Costs, Net	(16,508)	(17,699)
Less current and short-term portion	22,138	44,339
Total long-term debt	1,363,135	1,439,062
Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Unused Borrowing Capacity, Amount	300,000
Long-term debt	143,980	173,724
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	0
Accounts receivable securitization facility
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.40%
Long-term debt	$ 380,000	525,000
Revolving credit facility
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	2.00%
Long-term debt	$ 4,000	75,000
Foreign Line of Credit [Member]
Debt Instrument [Line Items]
Long-term debt	$ 20,920	43,314
Convertible Debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 345,000
Debt Instrument, Interest Rate, Effective Percentage	13.875%
Long-term debt	$ 0	181,557
Capital leases
Debt Instrument [Line Items]
Long-term debt	$ 2,881	$ 2,505
United States | Secured Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.00%
Debt Instrument, Face Amount	$ 700,000
Debt Instrument, Interest Rate, Effective Percentage	4.00%

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- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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