Discontinued Operations (Components Of Income Related To Discontinued Operations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Sep. 29, 2017	Sep. 30, 2016
Discontinued Operations and Disposal Groups [Abstract]
Sales		$ 0.0	$ 0.0	$ 3,029.8
Cost of sales		0.0	0.0	(1,566.4)
Selling, general and administrative expenses		(16.4)	0.0	(696.0)
Research and development expenses		0.0	0.0	(190.4)
Interest expense		0.0	0.0	(19.7)
Earnings from discontinued operations before income taxes		(16.4)	0.0	557.3
Income taxes		5.4	22.3	(157.0)
Earnings from discontinued operations, net of income taxes	$ 0.0	$ (11.0)	$ 22.3	$ 400.3