Commitments and Contingencies (Narrative) (Details) (USD $)	1 Months Ended	12 Months Ended				9 Months Ended			1 Months Ended	3 Months Ended	12 Months Ended	1 Months Ended		0 Months Ended		12 Months Ended
	Aug. 31, 2013 lawsuit	Sep. 26, 2014	Sep. 27, 2013	Sep. 28, 2012	Sep. 26, 2014 Tax Matters Agreement Covidien	Jun. 27, 2014 Asbestos Matters	Sep. 26, 2014 Asbestos Matters Case	Sep. 26, 2014 Accrued and other current liabilities	Aug. 31, 2011 '222 and '218 Patent Litigation: Exela Pharma Sciences, LLC Patents	Jun. 27, 2014 '222 and '218 Patent Litigation: Exela Pharma Sciences, LLC	Sep. 26, 2014 '222 and '218 Patent Litigation: Exela Pharma Sciences, LLC Case	Aug. 31, 2012 Glenridge Litigation principal	Aug. 31, 2013 Glenridge Litigation Case	Sep. 26, 2012 John K. Norton v. Questcor Pharmaceuticals, et al action	Sep. 26, 2012 Gerald Easton v. Don M Bailey, et al action	Sep. 26, 2014 Gerald Easton v. Don M Bailey, et al	Sep. 26, 2014 David Taban, et al. v. Questcor Pharmaceuticals, Inc	Sep. 26, 2014 Mallinckrodt Veterinary, Inc., Millsboro, Delaware order	Sep. 26, 2014 Lower Passaic River, New Jersey Defendent	Apr. 11, 2014 Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Patents allegedly infringed									2
Expiration period									30 months
Loss contingency charge										$ 11,500,000
Loss Contingency, Claims Settled, Number											3
Principals												3
Loss Contingency, Lawsuits, Number	2
Asbestos related pending cases							11,900						1
Filed-actions consolidated into the lawsuit														4	5
Federal derivative action staying period a																60 days	60 days
Federal derivative action staying period b																60 days	60 days
Remedial cost range, minimum		43,700,000																		365,000,000
Remedial cost range, maximum		106,900,000																		3,200,000,000
Environmental liabilities		67,100,000																		23,100,000
Environmental liabilities, current								7,200,000
Number of Administrative Orders of Consent Entered Into																		2
Number of defendants																			70
Remedial cost, estimate																				1,700,000,000
Estimation of liability, historical term						5 years
Estimation of liability, expected future term of claims						7 years
Rent expense		19,900,000	16,900,000	15,500,000
Plant assets exchanged for IRBs		27,400,000
Period of Property Tax Abatement		10 years
Tax agreement, tax threshold					$ 200,000,000