Operating Segments (Summary Of Assets And Goodwill By Segment) (Details) - USD ($) $ in Millions	Jul. 02, 2016	Sep. 26, 2015
Segment Reporting Information [Line Items]
Total assets	$ 7,805	$ 5,028
Total goodwill	2,541	1,652
Consumer Packaging [Member]
Segment Reporting Information [Line Items]
Total assets	3,617	3,832
Total goodwill	1,521	1,520
Health, Hygiene, & Specialities [Member]
Segment Reporting Information [Line Items]
Total assets	3,471	385
Total goodwill	937	48
Engineered Materials [Member]
Segment Reporting Information [Line Items]
Total assets	717	811
Total goodwill	$ 83	$ 84