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Business Acquisitions, Goodwill and Intangible Assets (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Jun. 30, 2013
Business Acquisitions, Goodwill and Intangible Assets  
Acquisition consideration paid in cash $ 55.0
Acquisition consideration for the remaining shares agreed to be purchased $ 14.3
Maximum period to determine final value of identifiable intangible assets 12 months