Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments (Details 2)

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Fair Value of Financial Instruments (Details 2) (AFS Debt Securities [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended
May 31, 2013
May 31, 2012
AFS Debt Securities [Member]
   
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation    
Balance as of March 1 $ 34.2 $ 28.5
Total net gains    
Included in earnings (interest expense, net) 1.3 1.2
Included in other comprehensive income (net unrealized losses on AFS debt securities) (1.2) (2.3)
Total net gains (losses) 0.1 (1.1)
Balance as of the end of the period $ 34.3 $ 27.4