ACCUMULATED OTHER COMPREHENSIVE INCOME AND OTHER COMPREHENSIVE INCOME (LOSS) (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Other comprehensive loss
Other comprehensive loss, before income taxes	$ (12.2)	$ (28.3)	$ (27.3)	$ (35.6)
Total tax expense (benefit) for the period	5.9	(11.2)	7.2	(13.8)
Other comprehensive loss, net of tax	(18.1)	(17.1)	(34.5)	(21.8)
Commodity contracts
Other comprehensive loss
Other comprehensive loss, before income taxes	0.2	1.8	7.3	1.7
Change in pension and OPEB liability adjustments
Other comprehensive loss
Amortization of actuarial gain (loss) and prior service credit	(1.8)	(2.3)	(5.0)	(7.1)
Other pension and OPEB plan adjustments	35.7		36.1
Other comprehensive loss, before income taxes	33.9	(2.3)	31.1	(7.1)
Total tax expense (benefit) for the period	12.7	(0.9)	11.8	(2.7)
Other comprehensive loss, net of tax	21.2	(1.4)	19.3	(4.4)
Change in pension and OPEB liability adjustments | Other comprehensive loss reclassifications
Other comprehensive loss
Other comprehensive loss, net of tax	(1.1)	(1.4)	(3.1)	(4.4)
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	(1.8)	(2.3)	(5.0)	(7.1)
Change in pension and OPEB liability adjustments | Provision for income taxes | Other comprehensive loss reclassifications
Other comprehensive loss
Total tax expense (benefit) for the period	(0.7)	(0.9)	(1.9)	(2.7)
Change in foreign currency translation adjustment
Other comprehensive loss
Other comprehensive loss, before income taxes	(46.3)	(27.4)	(69.6)	(29.3)
Total tax expense (benefit) for the period	(6.9)	(10.8)	(8.8)	(11.4)
Other comprehensive loss, net of tax	(39.4)	(16.6)	(60.8)	(17.9)
Change in derivative cash flow hedges
Other comprehensive loss
Other comprehensive loss, before income taxes	0.2	1.4	11.2	0.8
Total tax expense (benefit) for the period	0.1	0.5	4.2	0.3
Other comprehensive loss, net of tax	0.1	0.9	7.0	0.5
Change in derivative cash flow hedges | Other comprehensive loss reclassifications
Other comprehensive loss
Other comprehensive loss, net of tax	(0.6)		(6.0)
Change in derivative cash flow hedges | Cost of sales | Other comprehensive loss reclassifications
Other comprehensive loss
Other comprehensive loss, before income taxes	(1.0)		(9.7)
Change in derivative cash flow hedges | Provision for income taxes | Other comprehensive loss reclassifications
Other comprehensive loss
Total tax expense (benefit) for the period	$ (0.4)		(3.7)
Equity interest in investee's other comprehensive income (loss)
Other comprehensive loss
Other comprehensive loss, before income taxes		$ (0.4)	$ 3.9	$ (0.9)