Goodwill and Other Intangible Asset - Amortization - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
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	395.1	379.3
Accumulated Amortization	178.7	143.8
Net Carrying Amount	$ 216.4	235.5
Weighted average useful lives of acquired amortizable intangible assets	10 years
Amortization expense	$ 34.7	36.6	$ 20.1
Amortization expense estimated for each of the next five fiscal years
2016	35.8
2017	35.4
2018	31.2
2019	27.0
2020	21.2
Customer relationships
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	315.6	299.8
Accumulated Amortization	122.6	92.3
Net Carrying Amount	$ 193.0	207.5
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
Accumulated Amortization	30.9	26.5
Net Carrying Amount	$ 22.9	27.3
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
Accumulated Amortization	$ 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
Accumulated Amortization	19.2	19.0
Net Carrying Amount	$ 0.5	0.7
Weighted average useful lives of acquired amortizable intangible assets	2 years
Backlog
Summary of the Company's amortizable intangible assets
Amortization expense		$ 9.8