Commitments and Contingencies - Tax Matters (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jun. 20, 2013	Jun. 24, 2016	Mar. 25, 2016	Jun. 24, 2016	Jun. 26, 2015
Loss Contingencies [Line Items]
Recognized gain from reversed portion of shared tax obligation		$ 54.0		$ 54.0	$ (2.0)
TE Connectivity
Loss Contingencies [Line Items]
Payment made to tax sharing agreement parties in anticipation of tax ruling		4.0	$ 120.0
Medtronic
Loss Contingencies [Line Items]
Payment made to tax sharing agreement parties in anticipation of tax ruling		$ 12.0	$ 2.0
2007 Tax Sharing Agreement
Loss Contingencies [Line Items]
Income tax examination, additional taxes owed	$ 883.3
Income tax examination, proposed tax penalties	154.0
Income tax examination, amount of additional tax deficiency	$ 30.0