Leases (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Summary of future minimum lease payments for operating leases
2013	$ 20.0
2014	16.3
2015	12.6
2016	9.1
2017	6.5
Thereafter	46.5
Total	111.0
Foreign [Member]
Summary of future minimum lease payments for operating leases
2013	2.6
2014	1.9
2015	1.1
2016	0.7
2017	0.5
Thereafter	1.1
Total	7.9
Domestic [Member]
Summary of future minimum lease payments for operating leases
2013	17.4
2014	14.4
2015	11.5
2016	8.4
2017	6.0
Thereafter	45.4
Total	$ 103.1