Segment And Geographic Data (Summary Of Selected Information By Geography) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 27, 2014	Oct. 01, 2016	Sep. 26, 2015	Sep. 27, 2014
Segment Reporting Information [Line Items]
Total net sales	$ 1,618	$ 1,645	$ 1,614	$ 1,612	$ 1,196	$ 1,241	$ 1,224	$ 1,220	$ 6,489	$ 4,881	$ 4,958
North America [Member]
Segment Reporting Information [Line Items]
Total net sales									5,250	4,692	4,769
South America [Member]
Segment Reporting Information [Line Items]
Total net sales									336	6	7
Europe [Member]
Segment Reporting Information [Line Items]
Total net sales									628	118	128
Asia [Member]
Segment Reporting Information [Line Items]
Total net sales									$ 275	$ 65	$ 54