Goodwill and Other Intangible Assets (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 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	400.7		400.7		$ 379.3
Accumulated Amortization	160.6		$ 160.6		143.8
Weighted average useful lives of acquired amortizable intangible assets			10 years
Amortization expense	8.4	$ 6.0	$ 16.7	$ 14.5
Amortization expense estimated for each of the next five fiscal years
2015	34.7		34.7
2016	35.8		35.8
2017	35.5		35.5
2018	31.3		31.3
2019	27.1		27.1
Customer relationships
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	321.2		321.2		299.8
Accumulated Amortization	106.7		$ 106.7		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	28.7		$ 28.7		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