Discontinued Operations Income Statement (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 26, 2015	Sep. 30, 2016	Sep. 26, 2015
Discontinued Operations and Disposal Groups [Abstract]
Net sales	$ 410.9	$ 440.9	$ 1,231.6	$ 1,385.2
Cost of goods sold	287.6	295.6	886.7	934.6
Gross profit	123.3	145.3	344.9	450.6
Selling, general and administrative	87.4	113.3	267.6	316.3
Research and development	4.3	5.1	14.2	16.7
Operating income	31.6	26.9	63.1	117.6
Income from discontinued operations before income taxes	32.0	27.4	63.6	117.6
Provision for income taxes	9.1	6.9	15.0	29.0
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	22.9	20.5	48.6	88.6
Gain (loss) from sale of discontinued operations before income taxes	(0.6)	0.0	(0.6)	4.8
Provision for income taxes	0.0	0.0	0.0	0.0
Gain (loss) from sale of discontinued operations, net of tax	$ (0.6)	$ 0.0	$ (0.6)	$ 4.8