Discontinued Operations and Divestitures (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended									12 Months Ended			1 Months Ended	12 Months Ended
	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 27, 2013	Sep. 27, 2013	Jun. 28, 2013		Mar. 29, 2013	Dec. 28, 2012	Sep. 26, 2014	Sep. 27, 2013	Sep. 28, 2012	Dec. 31, 2013 Oxymorphone ER	Sep. 26, 2014 Oxymorphone ER	Sep. 28, 2012 Tussi Caps	Sep. 26, 2014 Tussi Caps	Sep. 27, 2013 Tussi Caps	Sep. 28, 2012 Introduction of Competitive Generic Product Tussi Caps	Sep. 28, 2012 Sales Target Tussi Caps
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of income taxes	$ 0	$ 0.2	$ (0.1)	$ (0.8)	$ 2.3	$ (0.2)	[1]	$ (0.5)	$ (0.6)	$ (0.7)	$ 1.0	$ (6.7)
Upfront cash received													4.0		11.5
Contractually obligated future cash receipts													8.0
Gain on divestiture										15.6	2.9	2.9		11.7	11.1
Contingent gains related to divestiture																		11.5	1.0
Contingent payments received															$ 2.9	$ 2.9	$ 2.9

[1] Operations in the third quarter of fiscal 2013 were impacted by the Separation.