DERIVATIVE FINANCIAL INSTRUMENTS (Details 2) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Derivatives, Fair Value [Line Items]
Asset derivatives	$ (25.7)	$ (2.6)	$ (0.9)
Liability derivatives	(0.7)	(20.8)	(21.9)
Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	(19.1)	(1.9)	(0.8)
Other Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	(6.6)	(0.7)	(0.1)
Accrued Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	(0.7)	(19.0)	(19.2)
Other Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	0.0	(1.8)	(2.7)
Commodity Contracts Losses | Designated as Hedging Instrument | Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	2.9	0.5	0.0
Commodity Contracts Losses | Designated as Hedging Instrument | Other Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	0.1	0.1	0.0
Commodity Contracts Losses | Designated as Hedging Instrument | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	(0.1)	(18.0)	(19.1)
Commodity Contracts Losses | Designated as Hedging Instrument | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	0.0	(1.8)	(3.0)
Commodity Contracts Gains | Designated as Hedging Instrument | Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	(20.6)	(1.8)	0.0
Commodity Contracts Gains | Designated as Hedging Instrument | Other Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	(6.7)	(0.8)	(0.1)
Commodity Contracts Gains | Designated as Hedging Instrument | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	0.0	0.2	0.8
Commodity Contracts Gains | Designated as Hedging Instrument | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	0.0	0.0	0.3
Foreign Exchange Contract | Not Designated as Hedging Instrument | Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	(2.4)	(1.1)	(1.0)
Foreign Exchange Contract | Not Designated as Hedging Instrument | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	0.8	0.2	0.3
Foreign Exchange Contract Loss | Not Designated as Hedging Instrument | Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	1.0	0.5	0.2
Foreign Exchange Contract Loss | Not Designated as Hedging Instrument | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	$ (1.4)	$ (1.4)	$ (1.2)