Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments (Details)

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Fair Value of Financial Instruments (Details) (USD $)
In Millions
Aug. 31, 2011
Feb. 28, 2011
Aug. 31, 2010
Feb. 28, 2010
Assets        
Cash and cash investments, Carrying Amount $ 10.0 $ 9.2 $ 13.9 $ 43.5
Cash and cash investments, Fair Value 10.0 9.2    
Accounts receivable, Carrying Amount 501.7 417.4    
Accounts receivable, Fair Value 501.7 417.4    
Available-for-sale debt securities, Carrying Amount 43.7 40.8    
Available-for-sale debt securities, Fair Value 43.7 40.8    
Foreign currency contracts, Carrying Amount 27.8 17.0    
Foreign currency contracts, Fair Value 27.8 17.0    
Interest rate swap contracts, Carrying Amount 0 1.7    
Interest rate swap contracts, Fair Value 0 1.7    
Notes receivable, Carrying Amount 3.4 4.8    
Notes receivable, Fair Value 3.4 4.8    
Liabilities        
Notes payable to banks 198.0 83.7    
Notes payable to banks, Fair Value 195.1 83.8    
Accounts payable, Carrying Amount 138.7 129.2    
Accounts payable, Fair Value 138.7 129.2    
Long-term debt, including current portion, Carrying Amount 2,748.4 3,152.6    
Long-term debt, including current portion, Fair Value 2,882.9 3,298.2    
Foreign currency contracts, Carrying Amount 4.1 5.3    
Foreign currency contracts, Fair Value 4.1 5.3    
Interest rate swap contracts, Carrying Amount 41.5 6.1    
Interest rate swap contracts, Fair Value $ 41.5 $ 6.1