Acquisitions (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Dec. 31, 2012	Sep. 30, 2011	Dec. 31, 2012 Customer Relationships [Member]	Dec. 31, 2012 Technology [Member]	Dec. 31, 2012 Other Intangible Assets [Member]
Acquisitions (Textual) [Abstract]
Liabilities incurred		$ 10.9
Business Acquisition, Cost of Acquired Entity, Purchase Price	84.8
Business Acquisition, Purchase Price Allocation, Goodwill Amount	70.7
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Amount			$ 7.1	$ 3.0	$ 1.0
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life			10 years	5 years	5 years