Acquisitions Schedule of acquisition costs (Details) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Jun. 27, 2015	Mar. 28, 2015	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014
schedule of acquisition expenses [Line Items]
Business Combination, Acquisition Related Costs	$ 18.5	$ 2.0	$ 17.8	$ 1.1
Elan Corporation [Member]
schedule of acquisition expenses [Line Items]
Business Combination, Acquisition Related Costs					$ 284.9
Elan Corporation [Member] | General and Administrative Expense [Member]
schedule of acquisition expenses [Line Items]
Business Combination, Acquisition Related Costs					108.9
Elan Corporation [Member] | Interest Net [Member]
schedule of acquisition expenses [Line Items]
Business Combination, Acquisition Related Costs					10.0
Elan Corporation [Member] | Other Expense [Member]
schedule of acquisition expenses [Line Items]
Business Combination, Acquisition Related Costs					0.2
Elan Corporation [Member] | Discharge of Debt [Member]
schedule of acquisition expenses [Line Items]
Business Combination, Acquisition Related Costs					$ 165.8