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Investments - Equity Method Investments (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended 12 Months Ended 12 Months Ended
Jun. 30, 2012
Jun. 28, 2014
Jun. 29, 2013
Jun. 28, 2014
Other Noncurrent Assets [Member]
Jun. 29, 2013
Other Noncurrent Assets [Member]
Jun. 28, 2014
Janssen Al [Member]
Jun. 29, 2013
Janssen Al [Member]
Jun. 28, 2014
Proteostasis Therapeutics, Inc. [Member]
Jun. 28, 2014
Newbridge Pharmaceutical Limited [Member]
Schedule of Equity Method Investments [Line Items]                  
Equity method investments   $ 0 $ 0 $ 57.4 $ 4.4     $ 18.5 $ 34.4
Equity method investment, ownership percentage             49.90% 22.00% 48.00%
Proceeds from sale of equity method investment           (2.0)      
Realized loss on sale of equity method investment           (2.8)      
Net loss from equity method investment 0         (1.6)   (1.5) (5.6)
Equity method option                 243.0
Joint venture carrying value   $ 4.5 $ 4.4