Restructuring (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended	3 Months Ended		9 Months Ended	3 Months Ended								6 Months Ended	9 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 29, 2014	Mar. 30, 2013	Jun. 29, 2013	Mar. 29, 2014 Elan Corporation [Member] employees	Dec. 28, 2013 Elan Corporation [Member] employees	Mar. 29, 2014 Elan Corporation [Member]	Mar. 29, 2014 ELND005 [Member] employees	Mar. 29, 2014 Velcera, Inc. [Domain]	Sep. 28, 2013 Velcera, Inc. [Domain]	Jun. 29, 2013 Velcera, Inc. [Domain] employees	Mar. 29, 2014 GEORGIA employees	Dec. 28, 2013 GEORGIA	Dec. 28, 2013 MINNESOTA	Sep. 28, 2013 MINNESOTA	Dec. 28, 2013 MINNESOTA employees	Mar. 29, 2014 MINNESOTA
Restructuring [Line Items]
Severance Costs			$ 17.6	$ 0		$ 12.9	$ 14.3		$ 0.7		$ 0.7	$ 2.9	$ 0.9	$ 0.5	$ 0.2	$ 1.4
Payments for Restructuring								17.2										1.1
Tangible Asset Impairment Charges									4.1
Restructuring and Related Cost, Number of Positions Eliminated						35	8		10			22	30				40
Restructuring	$ 19.5	$ 0	$ 36.5	$ 0	$ 2.9			$ 32.0		$ 0.7