Fair value of consideration paid (Details) $ / shares in Units, € in Millions, $ in Millions		12 Months Ended
	Dec. 18, 2013 USD ($) shares $ / shares	Jun. 27, 2015 EUR (€)	Jun. 27, 2015 USD ($)	Jun. 28, 2014 USD ($)	May. 12, 2015
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Business Acquisition, Cash Exchange per share | $ / shares	$ 6.25
Business Acquisition, Percentage of Voting Interests Acquired					100.00%
Payment for Business Combination, Cash Payment		€ 200.0	$ 223.4
Elan Corporation [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Business acquisition, cash consideration paid on unvested stock options and awards				$ 16.1
Shares, Outstanding | shares	515,700,000
Business Acquisition, Share Exchange Ratio | shares	0.07636
Total Company shares issued to acquired company shareholders | shares	39,400,000
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	$ 6,117.2
Business Acquisition, Cash Exchange	3,223.2
Business acquisition, cash consideration paid for vested stock options and awards	111.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 9,451.9
Business Acquisition, Percentage of Voting Interests Acquired	29.00%
Business Combination, Consideration Transferred	$ 9,451.9
Payment for Business Combination, Cash Payment	$ 9,451.9