Impairment and Restructuring - Impairment (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Restructuring, Settlement and Impairment Provisions	$ 40.2	$ 3.6	$ 42.5
Total	40.2	3.6	42.5
Impairment Alabama [Member]
Restructuring, Settlement and Impairment Provisions	5.3	2.3	12.8
Entraction Holding AB [Member]
Restructuring, Settlement and Impairment Provisions	0	0	15.1
Other Impairment [Member]
Restructuring, Settlement and Impairment Provisions	9.1	1.3	14.6
Business Realignment [Member]
Restructuring, Settlement and Impairment Provisions	15.6	0	0
Merger Related costs [Member]
Restructuring, Settlement and Impairment Provisions	10.2	0	0
Impairment subtotal [Member]
Restructuring, Settlement and Impairment Provisions	$ 14.4	$ 3.6	$ 42.5