Accounting Policies (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014	Dec. 31, 2014
Intangible assets subject to amortization
Gross Carrying Amount	$ 292.4		$ 292.4		$ 295.1
Accumulated Amortization	(133.9)		(133.9)		(123.6)
Net Carrying Amount	158.5		158.5		171.5
Indefinite-lived intangible assets
Indefinite-lived intangible assets	37.2		37.2		38.6
Intangible assets
Gross Carrying Amount	329.6		329.6		333.7
Net Carrying Amount	195.7		$ 195.7		210.1
Weighted-average amortization			12 years 1 month 6 days
Aggregate amortization expense for amortized intangible assets	5.2	$ 3.7	$ 10.3	$ 7.4
Future amortization expense
Future amortization expense for remainder of 2015	10.3		10.3
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	(13.7)		(13.7)		(13.3)
Net Carrying Amount	2.5		$ 2.5		2.9
Intangible assets
Weighted-average amortization			4 years 8 months 12 days
Customer relationships
Intangible assets subject to amortization
Gross Carrying Amount	204.4		$ 204.4		206.7
Accumulated Amortization	(94.7)		(94.7)		(87.5)
Net Carrying Amount	109.7		$ 109.7		119.2
Intangible assets
Weighted-average amortization			11 years 9 months 18 days
Technology
Intangible assets subject to amortization
Gross Carrying Amount	41.9		$ 41.9		42.1
Accumulated Amortization	(14.6)		(14.6)		(12.9)
Net Carrying Amount	27.3		$ 27.3		29.2
Intangible assets
Weighted-average amortization			10 years
Trade name
Intangible assets subject to amortization
Gross Carrying Amount	20.4		$ 20.4		20.6
Accumulated Amortization	(5.1)		(5.1)		(4.2)
Net Carrying Amount	15.3		$ 15.3		16.4
Intangible assets
Weighted-average amortization			14 years 2 months 12 days
Other
Intangible assets subject to amortization
Gross Carrying Amount	9.5		$ 9.5		9.5
Accumulated Amortization	(5.8)		(5.8)		(5.7)
Net Carrying Amount	$ 3.7		$ 3.7		$ 3.8
Intangible assets
Weighted-average amortization			33 years