Discontinued Operations, Danaher Separation And Other Dispositions (Components Of Income Related To Discontinued Operations) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Oct. 02, 2015	Jul. 03, 2015	Apr. 03, 2015	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]
Sales									$ 345.7	$ 759.8	$ 834.9
Cost of sales									(97.7)	(209.9)	(219.3)
Selling, general and administrative expenses									(152.1)	(308.0)	(315.7)
Research and development expenses									(79.9)	(157.2)	(145.5)
Interest expense									(1.8)	(3.6)	(4.7)
Income from discontinued operations before income taxes									14.2	81.1	149.7
Gain on disposition of discontinued operations before income taxes									760.5	0.0	0.0
Earnings from discontinued operations before income taxes									774.7	81.1	149.7
Income taxes									(16.0)	(25.8)	(45.3)
Earnings from discontinued operations, net of income taxes	$ (46.6)	$ 813.3	$ (19.8)	$ 11.8	$ 12.1	$ (0.7)	$ 9.0	$ 34.9	$ 758.7	$ 55.3	$ 104.4