DERIVATIVES - Narrative (Details) - USD ($)	1 Months Ended		3 Months Ended		12 Months Ended
	Jul. 31, 2011	Nov. 30, 2010	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	May. 31, 2014	Nov. 30, 2009
Derivative disclosures
No transfers between levels in fair value hierarchy			$ 0		$ 0
Derivatives qualifying as cash flow hedges deferred in other comprehensive income			(11,600,000)	$ 7,400,000
Money market funds, classified as Level Two			$ 737,000,000		510,100,000
Cash Flow Hedges
Derivative disclosures
Maximum Period for Discontinuation of Foreign Currency Cash Flow Hedge Due to Forecasted Transaction Is Probable of Not Occurring			60 days
Foreign Exchange Contract | Cash Flow Hedges
Derivative disclosures
Ineffective portion of foreign exchange hedges			$ 1,300,000	800,000
Derivative, Notional Amount			208,400,000		174,800,000
Derivative, Fair Value, Net			(9,400,000)		5,500,000
Accumulated other comprehensive income, related to cash flow hedge			3,900,000	(14,500,000)	(10,100,000)	$ (10,400,000)
Cash flow hedge gain (loss) to be reclassified within twelve months			$ 2,600,000
Description of Reclassification of Cash Flow Hedge Gain (Loss)			P12M
Derivatives qualifying as cash flow hedges deferred in other comprehensive income			$ (11,900,000)	8,000,000
Maximum duration of foreign exchange contracts used to hedge intercompany purchases (in months)			15 months
Commodity Option
Derivative disclosures
Derivative, Notional Amount			$ 200,000
Accumulated other comprehensive income, related to cash flow hedge			(500,000)		(700,000)
Interest rate swap, terminated contract | Fair Value Hedges
Derivative disclosures
Derivative, Notional Amount	$ 500,000,000	$ 200,000,000
Proceeds from Termination of Hedge	$ 23,500,000	$ 15,600,000
Interest Rate Swaps - 2019 Note | Fair Value Hedges | Notes 4.90 Percent Due 2019
Derivative disclosures
Derivative, Notional Amount							$ 700,000,000
Interest rate swap, 2019 settled swaps
Derivative disclosures
Amortization of deferred hedge gains			500,000
Interest rate swap, 2019 open swaps
Derivative disclosures
Amortization of deferred hedge gains			2,000,000	2,700,000
Interest Rate Swaps - 2020 Note | Fair Value Hedges | Notes 3.00 Percent Due 2020
Derivative disclosures
Derivative, Notional Amount					750,000,000
Interest rate swap, 2020 open swaps
Derivative disclosures
Amortization of deferred hedge gains			2,100,000	$ 0
Designated as Hedging Instrument
Derivative disclosures
Derivative, Fair Value, Net			22,300,000		5,700,000
Notes 4.90 Percent Due 2019 | Interest Rate Swap | Fair Value Hedges
Derivative disclosures
Derivative, Notional Amount									$ 700,000,000
Notes 4.90 Percent Due 2019 | Interest Rate Swaps - 2019 Note | Fair Value Hedges
Derivative disclosures
Derivative, Notional Amount								$ 700,000,000
Senior Notes
Derivative disclosures
Long-term Debt, Gross			3,000,000,000		3,000,000,000
Senior Notes | Notes 3.00 Percent Due 2020
Derivative disclosures
Long-term Debt, Gross			750,000,000		750,000,000
Senior Notes | Notes 4.90 Percent Due 2019
Derivative disclosures
Long-term Debt, Gross			$ 700,000,000		$ 700,000,000