Goodwill and Other Intangible Assets (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Goodwill and Other Intangible Assets
Indefinite-lived trade name intangible asset	$ 52.3		$ 52.3
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	397.2		397.2		$ 379.3
Accumulated Amortization	169.5		$ 169.5		143.8
Weighted average useful lives of acquired amortizable intangible assets			10 years
Amortization expense	8.9	$ 6.2	$ 25.6	$ 20.7
Amortization expense estimated for each of the next five fiscal years
Remainder of 2015	8.9		8.9
2016	35.3		35.3
2017	34.9		34.9
2018	30.8		30.8
2019	26.6		26.6
2020	23.4		23.4
Customer relationships
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	317.7		317.7		299.8
Accumulated Amortization	114.5		$ 114.5		92.3
Weighted average useful lives of acquired amortizable intangible assets			10 years
Proprietary technology
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	53.8		$ 53.8		53.8
Accumulated Amortization	29.8		$ 29.8		26.5
Weighted average useful lives of acquired amortizable intangible assets			14 years
License agreements
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	6.0		$ 6.0		6.0
Accumulated Amortization	6.0		$ 6.0		6.0
Weighted average useful lives of acquired amortizable intangible assets			8 years
Backlog and other
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	19.7		$ 19.7		19.7
Accumulated Amortization	$ 19.2		$ 19.2		$ 19.0
Weighted average useful lives of acquired amortizable intangible assets			2 years