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Intangible Assets (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
Jul. 31, 2013
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2013 $ 30.2
2014 27.9
2015 21.5
2016 19.8
2017 $ 19.4