DEBT (Credit Facilities) (Details) $ in Millions	3 Months Ended	9 Months Ended
	Dec. 31, 2014 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Feb. 18, 2015	Dec. 19, 2014 USD ($)
Line of Credit Facility [Line Items]
Long-term Debt, Maturities, Repayment Terms		P5Y
Debt Instrument, Payment Terms		P5Y
Line of Credit Facility, Fair Value of Amount Outstanding	$ 0.0	$ 0.0
Revolving Credit Facility, maximum borrowing capacity							$ 1,000.0
Debt to EBITDA (leverage) ratio		3.8
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving Credit Facility, interest rate at period end		1.29%
Target Ratio to Resume Share Repurchase [Member]
Line of Credit Facility [Line Items]
Debt to EBITDA (leverage) ratio		2.5
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Initiation Date	Dec. 19, 2014
Credit Facility, Maximum Letters of Credit							$ 125.0
Maximum [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt to EBITDA (leverage) ratio						3.75
Maximum [Member] | Revolving Credit Facility [Member] | Scenario, Forecast [Member]
Line of Credit Facility [Line Items]
Debt to EBITDA (leverage) ratio			3.75	4.25	4.75