Annual report pursuant to Section 13 and 15(d)

Defined Contribution and Defined Benefit Plans (Details)

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Defined Contribution and Defined Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Feb. 29, 2012
Feb. 28, 2011
Feb. 28, 2010
Defined Contribution and Defined Benefit Plans (Textual)      
Company contributions under defined contribution plans $ 11.0 $ 20.6 $ 23.8
Net periodic benefit cost 4.3 121.8 4.3
Settlement losses   109.9  
Defined benefit pension benefit obligation 96.5 86.1  
Plan assets $ 79.4 $ 75.7