Accounting Policies (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014	Dec. 31, 2014
Intangible assets subject to amortization
Gross Carrying Amount	$ 291.9		$ 291.9		$ 295.1
Accumulated Amortization	(139.5)		(139.5)		(123.6)
Net Carrying Amount	152.4		152.4		171.5
Indefinite-lived intangible assets
Indefinite-lived intangible assets	37.2		37.2		38.6
Intangible assets
Gross Carrying Amount	329.1		329.1		333.7
Net Carrying Amount	189.6		$ 189.6		210.1
Weighted-average amortization			12 years
Aggregate amortization expense for amortized intangible assets	5.6	$ 3.7	$ 15.9	$ 11.1
Future amortization expense
Future amortization expense for remainder of 2015	4.7		4.7
Future amortization expense, 2016	19.1		19.1
Future amortization expense, 2017	18.8		18.8
Future amortization expense, 2018	15.6		15.6
Future amortization expense, 2019	11.8		11.8
Patents
Intangible assets subject to amortization
Gross Carrying Amount	16.2		16.2		16.2
Accumulated Amortization	(14.0)		(14.0)		(13.3)
Net Carrying Amount	2.2		$ 2.2		2.9
Intangible assets
Weighted-average amortization			3 years 10 months 24 days
Customer relationships
Intangible assets subject to amortization
Gross Carrying Amount	204.4		$ 204.4		206.7
Accumulated Amortization	(98.5)		(98.5)		(87.5)
Net Carrying Amount	105.9		$ 105.9		119.2
Intangible assets
Weighted-average amortization			11 years 8 months 12 days
Technology
Intangible assets subject to amortization
Gross Carrying Amount	41.5		$ 41.5		42.1
Accumulated Amortization	(15.3)		(15.3)		(12.9)
Net Carrying Amount	26.2		$ 26.2		29.2
Intangible assets
Weighted-average amortization			9 years 9 months 18 days
Trade name
Intangible assets subject to amortization
Gross Carrying Amount	20.4		$ 20.4		20.6
Accumulated Amortization	(5.9)		(5.9)		(4.2)
Net Carrying Amount	14.5		$ 14.5		16.4
Intangible assets
Weighted-average amortization			14 years 4 months 24 days
Other
Intangible assets subject to amortization
Gross Carrying Amount	9.4		$ 9.4		9.5
Accumulated Amortization	(5.8)		(5.8)		(5.7)
Net Carrying Amount	$ 3.6		$ 3.6		$ 3.8
Intangible assets
Weighted-average amortization			32 years 8 months 12 days