DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Reclassifications from Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Commodity costs		$ 670.6	$ 1,259.8	$ 1,449.7	$ 2,748.5
Interest expense, net		78.0	80.2	126.3	157.1
Total Reclassifications from AOCI		60.5	(112.5)	(157.3)	(268.2)
Reclassification out of AOCI [Member] | Accumulated Net (Gain) Loss from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total Reclassifications from AOCI		(2.5)	6.6	(3.5)	16.6
Reclassification out of AOCI [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Noncontrolling Interest [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total Reclassifications from AOCI		1.7	(0.6)	3.7	(1.8)
Interest Rate Contracts [Member] | Reclassification out of AOCI [Member] | Accumulated Net (Gain) Loss from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest expense, net	[1]	2.9	3.4	8.3	8.1
Commodity Contract [Member] | Reclassification out of AOCI [Member] | Accumulated Net (Gain) Loss from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Commodity costs	[2],[3],[4]	$ (5.4)	$ 3.2	$ (11.8)	$ 8.5

[1] Loss reported within "Interest expense, net" in the consolidated statements of income.

[2] Excludes NCI loss of $1.7 million and gain of $0.6 million reclassified from AOCI for the three months ending June 30, 2015 and 2014, respectively.

[3] Excludes NCI loss of $3.7 million and gain of $1.8 million reclassified from AOCI for the six months ending June 30, 2015 and 2014, respectively.

[4] Loss (gain) reported within "Commodity costs" in the consolidated statements of income.