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) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Nov. 30, 2011
Nov. 30, 2011
AFS Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation    
Balance at February 28, 2011   $ 40.8
Total net gains    
Included in earnings (interest expense, net)   4.5
Included in other comprehensive income (net unrealized gains on AFS debt securities)   1.5
Total net gains   6.0
Settlements (21.7) (21.7)
Balance at November 30, 2011   $ 25.1