Discontinued Operations and Divestitures Discontinued Operations (Income) Loss from Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 25, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of income taxes	$ 370.3	$ 19.8
Nuclear Imaging
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operations, Net Sales	31.6	102.2
Discontinued operation, costs of goods sold	15.6	47.7
Discontinued operation, selling general and administrative expense	7.8	21.9
Disposal Group, Including Discontinued Operation, Restructuring Charges, Net	0.0	0.3
Disposal Group, Including Discontinued Operation, Other Expense	(0.2)
Discontinued operation, other		0.3
Income from discontinued operations	8.4	32.0
Gain on divestiture of discontinued operations	369.3	0.0
Income from discontinued operations, before income taxes	377.7	32.0
Income tax expense	5.4	10.2
Income from discontinued operations, net of income taxes	$ 372.3	21.8
Contrast Media and Delivery Systems
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operations, Net Sales		1.1
Income tax expense		(0.2)
Income from discontinued operations, net of income taxes		$ (1.7)