Collaboration Agreements (Details) - USD ($) $ in Millions	6 Months Ended		9 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 27, 2014	Mar. 29, 2014	Jun. 27, 2015	Jun. 28, 2014	Jun. 29, 2013
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Research and development	$ 88.2	$ 89.8		$ 187.8	$ 152.5	$ 115.2
Potential contingent milestone payments				30.0
Royalty revenue, percent of net sales			6.50%
Revenues						0.8
Minimum [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Potential contingent milestone payments			$ 10.0			0.5
Maximum [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Potential contingent milestone payments			$ 15.0			2.0
Gelcaps [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Research and development				78.0
Biotech [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Research and development				10.0
Potential contingent milestone payments				50.0
Phase three [Member] | Biotech [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Research and development				5.0
Final phase [Member] | Minimum [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Potential contingent milestone payments						3.8
Final phase [Member] | Maximum [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Potential contingent milestone payments						$ 5.5
Final phase [Member] | Gelcaps [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Research and development				105.0
Final phase [Member] | Biotech [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Research and development				10.0
Topical product [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Potential contingent milestone payments				17.5
Contractual arrangement [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Research and development				$ 18.0