Acquisitions (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Jun. 30, 2011
Acquisitions (Textuals) [Abstract]
Liabilities incurred	$ 11.1
Total purchase price	58.8
Goodwill	34.0
Goodwill expected to be deductible for tax purposes	0
Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Purchase price allocation amount	14.3
Weighted average useful life (in years)	14
Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Purchase price allocation amount	1.5
Weighted average useful life (in years)	10
Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Purchase price allocation amount	1.3
Weighted average useful life (in years)	2
Other Intangible assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Purchase price allocation amount	$ 0.6
Weighted average useful life (in years)	4