Commitments and Contingencies Commitments and Contingencies - Contigent Consideration for Acquisitions (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Hencorp Acquisition [Member]	Dec. 31, 2012 Hanley Group Acquisition [Member]	Dec. 31, 2012 RMI-RMC Acquistion [Member]	Dec. 31, 2012 Tradewire Acquisition [Member] [Member]	Dec. 31, 2012 Hencorp Acquisition [Member]	Dec. 31, 2012 Hanley Group Acquisition [Member]	Jul. 31, 2010 Hanley Group Acquisition [Member]	Dec. 31, 2012 RMI-RMC Acquistion [Member]	Dec. 31, 2012 Coffee Network Acquisition [Member]
Business Acquisition, Contingent Consideration [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Amortizable Intangibles						$ 3.1
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	3.4	0.9	0.1	0.2	0.1
Business Acquisition, Cost of Acquired Entity, Purchase Price							6.6	53.7		15.2
Business Combination, Consideration Transferred											0.3
Business Acquisition, Contingent Consideration, at Fair Value			2.5	9.5	3.0						0.1
Contingent payments equal to a % of the forecasted adjusted earnings before interest and taxes				15.00%
Business Acquisition, Contingent Consideration, Potential Cash Payment, Year One									$ 10.0