v3.2.0.727
ACCUMULATED OTHER COMPREHENSIVE INCOME AND OTHER COMPREHENSIVE INCOME (LOSS) (Details 2) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Other comprehensive loss        
Other comprehensive loss, before income taxes $ 11.9 $ 19.9 $ (15.2) $ (7.3)
Total tax expense (benefit) for the period 1.8 7.7 1.2 (2.6)
Other comprehensive income (loss), net of tax 10.1 12.2 (16.4) (4.7)
Commodity contracts        
Other comprehensive loss        
Other comprehensive loss, before income taxes 2.0 (0.1) 7.2 (0.1)
Change in foreign currency translation adjustment        
Other comprehensive loss        
Other comprehensive loss, before income taxes 11.5 22.5 (23.5) (1.9)
Total tax expense (benefit) for the period 1.7 8.7 (1.9) (0.6)
Other comprehensive income (loss), net of tax 9.8 13.8 (21.6) (1.3)
Change in pension and OPEB liability adjustments        
Other comprehensive loss        
Amortization of actuarial gain (loss) and prior service credit (1.6) (2.3) (3.2) (4.8)
Other pension and OPEB plan adjustments     0.4  
Other comprehensive loss, before income taxes (1.6) (2.3) (2.8) (4.8)
Total tax expense (benefit) for the period (0.6) (0.9) (1.1) (1.8)
Other comprehensive income (loss), net of tax (1.0) (1.4) (1.7) (3.0)
Change in pension and OPEB liability adjustments | Other comprehensive loss reclassifications        
Other comprehensive loss        
Other comprehensive income (loss), net of tax (1.0) (1.4) (2.0) (3.0)
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) (2.3) (3.2) (4.8)
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 (0.6) (0.9) (1.2) (1.8)
Change in derivative cash flow hedges        
Other comprehensive loss        
Other comprehensive loss, before income taxes 2.0 (0.3) 11.1 (0.6)
Total tax expense (benefit) for the period 0.7 (0.1) 4.2 (0.2)
Other comprehensive income (loss), net of tax 1.3 (0.2) 6.9 (0.4)
Change in derivative cash flow hedges | Other comprehensive loss reclassifications        
Other comprehensive loss        
Other comprehensive income (loss), net of tax (0.8)   (5.4)  
Change in derivative cash flow hedges | Cost of sales | Other comprehensive loss reclassifications        
Other comprehensive loss        
Other comprehensive loss, before income taxes (1.3)   (8.7)  
Change in derivative cash flow hedges | Provision for income taxes | Other comprehensive loss reclassifications        
Other comprehensive loss        
Total tax expense (benefit) for the period $ (0.5)   (3.3)  
Equity interest in investee's other comprehensive income (loss)        
Other comprehensive loss        
Other comprehensive loss, before income taxes   $ (0.2) $ 3.9 $ (0.5)