Discontinued Operations and Divestitures Discontinued Operations (Significant Cash and Non-Cash Transactions) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017
Specialty Generics Disposal Group
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation, Discontinued Operations	$ 0.6	$ 15.3	$ 12.1	$ 45.7
Capital Expenditure, Discontinued Operations	5.9	11.1	21.7	41.7
Amortization, Discontinued Operations	$ 0.0	$ 3.9	$ 1.7	14.6
Nuclear Imaging
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Capital Expenditure, Discontinued Operations				$ 0.3