Acquisitions Schedule of Purchase Price Allocation (Details) (USD $) In Millions, unless otherwise specified				5 Months Ended
	Sep. 26, 2014	Dec. 31, 2013	Aug. 15, 2014 Aptima [Member]	Sep. 26, 2014 Truesense Imaging, Inc. [Member]	Apr. 30, 2014 Truesense Imaging, Inc. [Member]
Business Acquisition [Line Items]
Cash and cash equivalents			$ 30.3	$ 4.2	$ 4.2
Receivables			53.2	8.8	8.8
Inventories, Initial Adjustment			85.3	18.8
Inventories, Adjustment				(0.5)
Inventories, Adjusted Allocation			85.3	18.3
Other current assets, Initial Estimate			5.7	2.6
Other current assets, Adjustments				1.1
Other current assets, Adjustment Allocation			5.7	3.7
Property, plant and equipment, Initial Estimate			35.9	25.6
Property, plant and equipment, Adjustments				0.8
Property, plant and equipment, Adjusted Allocation			35.9	26.4
Goodwill, Beginning	275.3	184.6	63.8	27.0
Goodwill, Adjustments				(0.1)
Goodwill, Ending	275.3	184.6	63.8	26.9
Intangible assets, initial Estimate			183.1	33.1
Intangible assets, Adjustments				(0.5)
Intangible assets, Adjusted Allocation			183.1	32.6
In-process research and development, initial Estimate			75.4	7.5
In-process research and development, Adjustments				0.6
In-process research and development, Adjusted Allocation			75.4	8.1
Other non-current assets			2.3
Total assets acquired, Adjustments				1.4
Total assets acquired, Adjusted Allocation			535.0	129.0	127.6
Accounts payable			66.8	3.8	3.8
Other current liabilities, initial Estimate			51.2	5.6
Other current liabilities, Adjustments				0.3
Other current liabilities, Adjusted Allocation			51.2	5.9
Other non-current liabilities, initial Estimate			14.5	23.1
Other non-current liabilities, Adjustments				0.5
Other non-current liabilities, Adjusted Allocation			14.5	23.6
Total liabilities assumed, Adjustment Allocation			132.5	33.3	32.5
Total liabilities assumed, Adjustments				0.8
Net assets acquired, Adjustments				0.6
Net assets acquired, Adjusted Allocation				95.7	95.1
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net			$ 402.5