Discontinued Operations and Divestitures (Assets and Liabilities Held-for-Sale) (Details) - Nuclear Imaging - Discontinued Operations, Held-for-sale - USD ($) $ in Millions	Dec. 29, 2017	Dec. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable	$ 0.0	$ 49.6
Inventories	0.0	20.0
Property, plant and equipment, net	0.0	188.7
Other current and non-current assets	0.0	52.6
Total assets classified as held for sale in the balance sheet	0.0	310.9
Accounts payable	0.0	19.7
Other current and non-current liabilities	0.0	100.6
Total liabilities classified as held for sale in the balance sheet	$ 0.0	$ 120.3