Goodwill and Other Intangible Assets (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Goodwill and Other Intangible Assets
Indefinite-lived trade name intangible asset	$ 52.3
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	382.4		379.3
Accumulated Amortization	152.2		143.8
Weighted average useful lives of amortizable intangible assets	10 years
Amortization expense	8.4	8.3
Amortization expense estimated for each of the next five fiscal years
2015	33.3
2016	33.2
2017	32.8
2018	28.6
2019	24.5
Customer relationships
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	302.9		299.8
Accumulated Amortization	99.4		92.3
Weighted average useful lives of amortizable intangible assets	10 years
Proprietary technology
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	53.8		53.8
Accumulated Amortization	27.6		26.5
Weighted average useful lives of amortizable intangible assets	14 years
License agreements
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	6.0		6.0
Accumulated Amortization	6.0		6.0
Weighted average useful lives of amortizable intangible assets	8 years
Backlog and other
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	19.7		19.7
Accumulated Amortization	$ 19.2		$ 19.0
Weighted average useful lives of amortizable intangible assets	2 years