Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount of the total principal payments made during the annual reporting period.

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Face (par) amount of debt instrument at time of issuance.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Debt Instrument, Percent Of Mandatory Principal Amortization Due In Each Of The First Six Years

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FINANCING ARRANGEMENTS - ADDITIONAL INFORMATION (Details) - USD ($)		12 Months Ended
	Aug. 26, 2016	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Notes payable and current portion of long-term debt		$ 30,100,000	$ 21,100,000
Total unused lines of credit		531,200,000
Commercial Paper
Debt Instrument [Line Items]
Notes payable and current portion of long-term debt		7,300,000	$ 0
Commercial Paper
Debt Instrument [Line Items]
Average amount of short-term debt outstanding during the year		900,000
Line of Credit \| Commercial Paper
Debt Instrument [Line Items]
Credit facilities, maximum borrowing capacity		500,000,000
Term Loan Agreement
Debt Instrument [Line Items]
Annual principal payment	$ 8,800,000	8,800,000
Mandatory principal amortization due in each of the first six years (as a percent)	5.00%
Debt instrument face amount		$ 175,000,000