Operating Leases - Future minimum payments due under non-cancelable operating leases (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Lease Assets [Line Items]
2015	$ 14.9
2016	13.0
2017	10.4
2018	9.0
2019	6.8
Thereafter	6.1
Operating Leases, Future Minimum Payments Due	60.2
Operating Lease [Member]
Lease Assets [Line Items]
2015	14.6
2016	12.7
2017	10.1
2018	8.7
2019	6.4
Thereafter	6.1
Operating Leases, Future Minimum Payments Due	58.6
Capitalized lease [Member]
Lease Assets [Line Items]
2015	0.3
2016	0.3
2017	0.3
2018	0.3
2019	0.4
Thereafter	0
Operating Leases, Future Minimum Payments Due	1.6
Capital Leases, Future Minimum Payments, Interest Included in Payments	(0.2)
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	1.4
Capital Lease Obligations, Current	(0.3)
Capital Lease Obligations, Noncurrent	$ 1.1