Discontinued Operations and Divestitures Discontinued Operations (Assets and Liabilities Held-for-sale) (Details) - Specialty Generics Disposal Group - USD ($) $ in Millions	Jun. 29, 2018	Dec. 29, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable, held for sale	$ 164.7	$ 170.4
Inventory, held for sale	202.1	211.7
Property, Plant and Equipment, held for sale	558.6	553.6
Intangible Assets, held for sale	112.3	114.0
Other current assets and non-current assets, held for sale	74.8	84.5
Total assets classified as held for sale in the balance sheet	1,112.5	1,134.2
Accounts payable, held for sale	40.0	36.0
Other current and non-current liabilities, held for sale	130.6	126.6
Total liabilities classified as held for sale in the balance sheet	$ 170.6	$ 162.6