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Intangible Assets (Projected Annual Amortization Expense for Intangible Assets) (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2014 $ 41.9
2015 40.1
2016 38.0
2017 36.6
2018 34.8
Thereafter 435.3
Total future amortization expense $ 626.7