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FINANCING ARRANGEMENTS - Components of Short-term and Long-term Debt (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt	$ 1,401,000	$ 1,465,000
Less: Current maturities and short-term borrowing	(651,000)	(715,000)
Long-term debt	$ 750,000	$ 750,000
Line of Credit | Revolving credit facility | Senior Unsecured Revolving Credit Facility 2019 Term Loan
Debt Instrument [Line Items]
Average interest rate as of	4.73%	2.70%
Total debt	$ 651,000	$ 715,000
Senior Notes | Series A Notes
Debt Instrument [Line Items]
Average interest rate as of	3.97%	3.97%
Total debt	$ 175,000	$ 175,000
Senior Notes | Series B Notes
Debt Instrument [Line Items]
Average interest rate as of	4.26%	4.26%
Total debt	$ 150,000	$ 150,000
Senior Notes | Series C Notes
Debt Instrument [Line Items]
Average interest rate as of	4.60%	4.60%
Total debt	$ 175,000	$ 175,000
Secured Debt | Receivables securitization facility
Debt Instrument [Line Items]
Average interest rate as of	2.62%	2.00%
Total debt	$ 250,000	$ 250,000

X

- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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+ References

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-Topic 210
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-Section S99
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