Goodwill and Intangible Assets - Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Finite-Lived Intangible Assets
Amortization expense of intangible assets	$ 13.3	$ 13.3	$ 35.5	$ 40.2
Remainder of Fiscal 2014	13.1		13.1
Fiscal 2015	50.6		50.6
Fiscal 2016	44.2		44.2
Fiscal 2017	37.6		37.6
Fiscal 2018	36.3		36.3
Customer Relationships | Maximum
Finite-Lived Intangible Assets
Useful lives of amortizable intangible assets	15 years
Noncompete Agreements | Maximum
Finite-Lived Intangible Assets
Useful lives of amortizable intangible assets	15 years
Cost of Sales
Finite-Lived Intangible Assets
Amortization expense of intangible assets	$ 0	$ 0	$ 0	$ 0