Acquisitions (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Business Combinations [Abstract]
Liabilities incurred		$ 10.9
Business Acquisition, Cost of Acquired Entity, Purchase Price	84.8
Goodwill, Acquired During Period	71.1
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Amount	7.1
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	10 years
Technology-Based Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Amount	3.0	3.2
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	5 years	10 years
Other Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Amount	$ 1.0
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	5 years