Discontinued Operations (Components Of Income Related To Discontinued Operations) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 29, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jul. 01, 2016	Apr. 01, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures
Sales									$ 0.0	$ 3,029.8	$ 6,524.5
Cost of sales									0.0	(1,566.4)	(3,285.1)
Selling, general and administrative expenses									0.0	(696.0)	(1,458.9)
Research and development expenses									0.0	(190.4)	(457.6)
Interest expense									0.0	(19.7)	(24.8)
Interest income									0.0	0.0	0.7
Income from discontinued operations before income taxes									0.0	557.3	1,298.8
Gain on disposition of discontinued operations before income taxes									0.0	0.0	760.5
Earnings from discontinued operations before income taxes									0.0	557.3	2,059.3
Income taxes									22.3	(157.0)	(448.6)
Earnings from discontinued operations, net of income taxes	$ 0.0	$ 0.0	$ 0.0	$ 22.3	$ 0.0	$ (11.0)	$ 238.7	$ 172.6	$ 22.3	$ 400.3	$ 1,610.7