Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Details 1)

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Derivative Instruments (Details 1) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Aug. 31, 2012
Aug. 31, 2011
Aug. 31, 2012
Aug. 31, 2011
Effect of the Company's undesignated derivative instruments on its Consolidated Statements of Operations        
Net (loss) gain recognized in income $ 1.8   $ (2.6)  
Interest expense, net [Member] | Interest rate swap contracts [Member]
        
Effect of the Company's undesignated derivative instruments on its Consolidated Statements of Operations        
Net (loss) gain recognized in income (0.3)   (0.4)  
Selling, general and administrative expenses [Member] | Foreign currency contracts [Member]
        
Effect of the Company's undesignated derivative instruments on its Consolidated Statements of Operations        
Net (loss) gain recognized in income 2.1 1.7 (2.2) 4.8
Cash Flow Hedging [Member]
        
Effect of the Company's derivative instruments designated in cash flow hedging relationships on its Consolidated Statements of Operations and Other Comprehensive Income, net of income tax effect        
Net (loss) gain recognized in OCI (Effective portion) (1.9) (7.4) (8.0) (9.4)
Net gain (loss) reclassified from AOCI to income (Effective portion) (0.7) 2.3 (0.9) 3.3
Cash Flow Hedging [Member] | Foreign currency contracts one [Member]
        
Effect of the Company's derivative instruments designated in cash flow hedging relationships on its Consolidated Statements of Operations and Other Comprehensive Income, net of income tax effect        
Net (loss) gain recognized in OCI (Effective portion) (1.4) 3.3 (1.0) 7.0
Cash Flow Hedging [Member] | Foreign currency contracts two [Member]
        
Effect of the Company's derivative instruments designated in cash flow hedging relationships on its Consolidated Statements of Operations and Other Comprehensive Income, net of income tax effect        
Net (loss) gain recognized in OCI (Effective portion) 2.1 2.3 (1.7) 6.2
Cash Flow Hedging [Member] | Diesel fuel swap contracts [Member]
        
Effect of the Company's derivative instruments designated in cash flow hedging relationships on its Consolidated Statements of Operations and Other Comprehensive Income, net of income tax effect        
Net (loss) gain recognized in OCI (Effective portion) 0.9   0.9  
Cash Flow Hedging [Member] | Interest rate swap contracts [Member]
        
Effect of the Company's derivative instruments designated in cash flow hedging relationships on its Consolidated Statements of Operations and Other Comprehensive Income, net of income tax effect        
Net (loss) gain recognized in OCI (Effective portion) (3.5) (13.0) (6.2) (22.6)
Cash Flow Hedging [Member] | Sales [Member] | Foreign currency contracts one [Member]
        
Effect of the Company's derivative instruments designated in cash flow hedging relationships on its Consolidated Statements of Operations and Other Comprehensive Income, net of income tax effect        
Net gain (loss) reclassified from AOCI to income (Effective portion) 0.5 1.7 1.7 2.7
Cash Flow Hedging [Member] | Cost of product sold [Member] | Foreign currency contracts two [Member]
        
Effect of the Company's derivative instruments designated in cash flow hedging relationships on its Consolidated Statements of Operations and Other Comprehensive Income, net of income tax effect        
Net gain (loss) reclassified from AOCI to income (Effective portion) 0.8 0.6 1.5 0.6
Cash Flow Hedging [Member] | Cost of product sold [Member] | Diesel fuel swap contracts [Member]
        
Effect of the Company's derivative instruments designated in cash flow hedging relationships on its Consolidated Statements of Operations and Other Comprehensive Income, net of income tax effect        
Net gain (loss) reclassified from AOCI to income (Effective portion) 0   0  
Cash Flow Hedging [Member] | Interest expense, net [Member] | Interest rate swap contracts [Member]
        
Effect of the Company's derivative instruments designated in cash flow hedging relationships on its Consolidated Statements of Operations and Other Comprehensive Income, net of income tax effect        
Net gain (loss) reclassified from AOCI to income (Effective portion) (2.0) 0 (4.1) 0
Cash Flow Hedging [Member] | Selling, general and administrative expenses [Member] | Foreign currency contracts [Member]
        
Effect of the Company's derivative instruments designated in cash flow hedging relationships on its Consolidated Statements of Operations and Other Comprehensive Income, net of income tax effect        
Net gain recognized in income (Ineffective portion) $ 0.3 $ 0.2 $ 0.2 $ 0.8