Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets Intangible Assets (Estimated amortization expense) (Details)

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Intangible Assets Intangible Assets (Estimated amortization expense) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
May 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]  
2013 $ 5.3
2014 5.8
2015 5.0
2016 5.0
2017 4.7
2018 4.6
Thereafter $ 30.6