Discontinued Operations and Divestitures Discontinued Operations (Income) Loss from Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of income taxes	$ 43.7	$ 44.4	$ 68.7	$ 488.5
Nuclear Imaging
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operations, Net Sales		0.0		31.6
Discontinued operation, costs of goods sold		0.0		15.6
Discontinued operation, selling general and administrative expense		0.0		7.8
Discontinued operation, other income		0.0		0.2
Gain on divestiture of discontinued operations		(5.9)		363.4
Income from discontinued operations, before income taxes		(5.9)		371.8
Income tax expense		(0.1)		5.3
Income from discontinued operations, net of income taxes		(5.8)		366.5
Specialty Generics Disposal Group
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operations, Net Sales	193.8	224.4	376.5	475.3
Discontinued operation, costs of goods sold	116.8	128.0	228.8	259.2
Discontinued operation, selling general and administrative expense	25.6	16.2	44.4	37.3
Disposal Group, Including Discontinued Operations, Research and Development Expense	11.3	16.9	29.2	33.7
Disposal Group, Including Discontinued Operations, Restructuring Charges	0.1	0.0	5.2	6.9
Discontinued operation, other income	0.3	2.4	0.3	3.8
Income from discontinued operations, before income taxes	40.3	65.7	69.2	142.0
Income tax expense	9.0	13.5	15.8	16.0
Income from discontinued operations, net of income taxes	$ 31.3	$ 52.2	$ 53.4	$ 126.0