Income Taxes (Schedule of Reconciliation of Income Taxes at Statutory Rate and Tax Provision) (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended		12 Months Ended
		Dec. 31, 2013	Sep. 26, 2014	Sep. 28, 2012	Sep. 25, 2015		Sep. 26, 2014		Sep. 27, 2013
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					20.00%		35.00%		35.00%
Provision for income taxes at Domestic statutory income tax rate (1)	[1]				$ 43.1		$ (53.8)		$ 19.5
Adjustments to reconcile to income tax provision:
Rate difference between non-U.S. and U.S. jurisdictions	[2],[3]				(138.6)		(10.6)		3.3
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Amount	[4]				0.0		(4.1)		(2.5)
Valuation allowances, nonrecurring					(2.1)		0.1		3.4
Adjustments to accrued income tax liabilities and uncertain tax positions	[2]				(6.8)		(1.5)		5.0
Interest and penalties on accrued income tax liabilities and uncertain tax positions	[2]				0.2		(7.9)		4.7
Investment in partnership					0.0		20.0		0.0
Credits, principally research		$ (0.7)	$ (3.6)	$ (2.3)	(8.1)	[5]	(0.8)	[5]	(6.3)	[5]
Impairments, nondeductible					0.0		41.8		0.0
Permanently nondeductible and nontaxable items	[6]				16.4		13.8		15.3
Other					3.0		(1.0)		1.4
Provision for (benefit from) income taxes	[7]				(92.9)		(10.1)		47.5
Current State and Local Tax Expense (Benefit)	[4]				$ 0.0		$ (6.1)		$ 3.7

[1] The statutory tax rate reflects the U.K. statutory tax rate of 20% for fiscal 2015, and the U.S. federal statutory tax rate of 35% for fiscal 2014 and 2013.

[2] Fiscal year 2013 includes impact of items relating to entities retained by Covidien in connection with the Separation.

[3] Includes the impact of certain recurring valuation allowances for Domestic and International jurisdictions.

[4] For fiscal 2015, U.S. state income tax benefit of $36.4 million, and U.S. manufacturing deduction tax benefit of $5.6 million were combined with the rate differences between Domestic and International jurisdictions. Fiscal 2014 includes U.S. state income tax benefit of $4.4 million associated with fiscal 2014 acquisitions and integration thereof.

[5] During fiscal 2013, the U.S. Research Credit legislation was extended, with a retroactive effective date of January 1, 2012. As such, fiscal 2013 includes approximately $2.3 million of credit related to the period January 1, 2012 through September 28, 2012. Due to the December 31, 2013 tax law expiration, fiscal 2014 includes $0.7 million for the period September 28, 2013 through December 31, 2013. During fiscal 2015, the legislation was extended, with a retroactive effective date of January 1, 2014. As such, fiscal 2015 includes approximately $3.6 million of credit related to the period January 1, 2014 through September 26, 2014.

[6] Includes the impact of nondeductible transaction and separation costs.

[7] Domestic reflects U.K. in fiscal 2015, and U.S. federal and state in fiscal 2014 and fiscal 2013.