Discontinued Operations and Divestitures Discontinued Operations (Significant Cash and Non-Cash Transactions) (Details) - Nuclear Imaging - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Sep. 29, 2017	Sep. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation, Discontinued Operations	$ 0.0	$ 4.5	$ 0.0	$ 14.3
Capital Expenditure, Discontinued Operations	$ 0.0	$ 4.0	$ 0.3	$ 7.8