ACCUMULATED OTHER COMPREHENSIVE INCOME AND OTHER COMPREHENSIVE LOSS (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Other comprehensive loss
Other comprehensive loss, before income taxes	$ (27.2)	$ (27.2)
Total tax expense (benefit) for the period	(0.7)	(10.3)
Other comprehensive loss, net of tax	(26.5)	(16.9)
Commodity contracts
Other comprehensive loss
Other comprehensive loss, before income taxes	5.1
Change in foreign currency translation adjustment
Other comprehensive loss
Other comprehensive loss, before income taxes	(35.0)	(24.5)
Total tax expense (benefit) for the period	(3.6)	(9.3)
Other comprehensive loss, net of tax	(31.4)	(15.2)
Change in pension and OPEB liability adjustments
Other comprehensive loss
Amortization of actuarial gain (loss) and prior service credit	(1.6)	(2.4)
Other Pension and OPEB adjustments	0.4
Other comprehensive loss, before income taxes	(1.2)	(2.4)
Total tax expense (benefit) for the period	(0.5)	(0.9)
Other comprehensive loss, net of tax	(0.7)	(1.5)
Change in pension and OPEB liability adjustments | Other comprehensive loss reclassifications
Other comprehensive loss
Other comprehensive loss, net of tax	(1.0)	(1.5)
Change in pension and OPEB liability adjustments | Cost of sales and selling, general and administrative expenses | Other comprehensive loss reclassifications
Other comprehensive loss
Amortization of actuarial gain (loss) and prior service credit	(1.6)	(2.4)
Change in pension and OPEB liability adjustments | Provision for (benefit from) income taxes | Other comprehensive loss reclassifications
Other comprehensive loss
Total tax expense (benefit) for the period	(0.6)	(0.9)
Change in derivative cash flow hedges
Other comprehensive loss
Other comprehensive loss, before income taxes	9.0	(0.3)
Total tax expense (benefit) for the period	3.4	(0.1)
Other comprehensive loss, net of tax	5.6	(0.2)
Change in derivative cash flow hedges | Other comprehensive loss reclassifications
Other comprehensive loss
Other comprehensive loss, net of tax	4.6
Change in derivative cash flow hedges | Cost of sales | Other comprehensive loss reclassifications
Other comprehensive loss
Other comprehensive loss, before income taxes	7.4
Change in derivative cash flow hedges | Provision for (benefit from) income taxes | Other comprehensive loss reclassifications
Other comprehensive loss
Total tax expense (benefit) for the period	2.8
Equity interest in investee's other comprehensive loss
Other comprehensive loss
Other comprehensive loss, before income taxes	$ 3.9	$ (0.3)