Transactions with Former Parent Company (Narrative) (Details) - USD ($)		12 Months Ended
		Sep. 25, 2015	Sep. 26, 2014	Sep. 27, 2013	Jun. 27, 2014
Related Party Transaction [Line Items]
Provision for (benefit from) income taxes	[1]	$ (92,900,000)	$ (10,100,000)	$ 47,500,000
Covidien | Separation and Distribution Agreement
Related Party Transaction [Line Items]
Initial cash capitalization					$ 168,000,000
Estimated cash upon completion of distribution					168,000,000
Adjustment payment benchmark					$ 20,000,000
Final adjustment payment		0
Covidien | Tax Matters Agreement
Related Party Transaction [Line Items]
Tax agreement, tax threshold		200,000,000
Provision for (benefit from) income taxes		$ 51,600,000
Change in ownership percentage		35.00%
Covidien | Minimum | Tax Matters Agreement
Related Party Transaction [Line Items]
Restriction period		2 years
Covidien | Maximum | Tax Matters Agreement
Related Party Transaction [Line Items]
Restriction period		5 years
Covidien | Discontinued Operations [Member]
Related Party Transaction [Line Items]
Inventory sold		$ 35,300,000	46,000,000	51,200,000
Inventory purchases		17,000,000	$ 28,900,000	38,400,000
Covidien | Selling, general and administrative
Related Party Transaction [Line Items]
Allocated expenses				$ 39,600,000
Covidien | Prepaid expenses and other current assets
Related Party Transaction [Line Items]
Due from related parties		6,300,000
Covidien | Other current liabilities
Related Party Transaction [Line Items]
Due to related parties		$ 3,900,000

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