Commitments and Contingencies (Narrative) (Details) $ in Millions			1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 01, 2014 USD ($) Defendent	Sep. 26, 2012 action	Aug. 31, 2012 principal	Jun. 24, 2016 USD ($) Case	Jun. 26, 2015 USD ($)	Jun. 24, 2016 USD ($) Defendent Case	Jun. 26, 2015 USD ($)	Mar. 28, 2014 USD ($)	Aug. 31, 2013 Case
Loss Contingencies [Line Items]
Litigation Settlement, Expense					$ 15.5
Environmental liabilities				$ 76.5		$ 76.5
Deferred tax liabilities related to installment sales				2,089.4		2,089.4
Section 453(a) interest				18.6	10.7	56.4	$ 24.9
Interest Payable, Installment Sales				20.8		$ 20.8
Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Number of defendants | Defendent	70					98
Environmental liabilities					13.3		13.3	$ 23.1
Remedial cost, estimate	$ 1,700.0			$ 1,380.0		$ 1,380.0
Asbestos Matters
Loss Contingencies [Line Items]
Pending claims | Case				11,700		11,700
Estimation of liability, historical term						5 years
Estimation of liability, expected future term of claims						7 years
Accrued and other current liabilities
Loss Contingencies [Line Items]
Environmental liabilities, current				$ 3.4		$ 3.4
Glenridge Litigation
Loss Contingencies [Line Items]
Number of defendants | principal			3
Pending claims | Case									1
Questcor Securities Litigation
Loss Contingencies [Line Items]
Subsequent actions consolidated into lawsuit | action		4
Litigation Settlement, Amount							38.0
Loss Contingency Accrual					$ 38.0		$ 38.0
Mallinckrodt Veterinary, Inc., Millsboro, Delaware [Member]
Loss Contingencies [Line Items]
Number of Administrative Orders of Consent Entered Into				2
Tax Matters Agreement | Covidien
Loss Contingencies [Line Items]
Tax agreement, tax threshold				$ 200.0		200.0
Industrial Revenue Bonds
Loss Contingencies [Line Items]
Plant assets exchanged for IRBs						88.0
Property, Plant, and Equipment, Fair Value Disclosure				73.7		73.7
Property, Plant and Equipment, Gross, Period Increase (Decrease)				(14.3)
Minimum | Environmental Remediation
Loss Contingencies [Line Items]
Remedial cost, estimate				39.4		39.4
Minimum | Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Remedial cost, estimate	365.0			483.4		483.4
Maximum | Environmental Remediation
Loss Contingencies [Line Items]
Remedial cost, estimate				121.7		121.7
Maximum | Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Remedial cost, estimate	$ 3,200.0			$ 2,700.0		$ 2,700.0