Operating Segments, Selected Information by Reportable Segment (Details) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 29, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 29, 2019 USD ($) Segment	Jun. 30, 2018 USD ($)	Sep. 29, 2018 USD ($)
Selected Information by Reportable Segment [Abstract]
Number of reportable segments | Segment			3
Net sales	$ 1,937	$ 2,072	$ 5,859	$ 5,815
Operating income	215	216	576	567
Depreciation and amortization	127	136	397	397
Total assets	8,809		8,809		$ 9,131
Total goodwill	2,911		2,911		2,944
Operating Segment [Member] | Engineered Materials [Member]
Selected Information by Reportable Segment [Abstract]
Net sales	639	687	1,936	1,990
Operating income	83	94	251	276
Depreciation and amortization	28	26	88	82
Total assets	1,931		1,931		1,998
Total goodwill	641		641		632
Operating Segment [Member] | Health, Hygiene & Specialties [Member]
Selected Information by Reportable Segment [Abstract]
Net sales	646	726	2,031	2,009
Operating income	65	62	171	140
Depreciation and amortization	49	51	153	146
Total assets	3,738		3,738		3,913
Total goodwill	861		861		902
Operating Segment [Member] | Consumer Packaging [Member]
Selected Information by Reportable Segment [Abstract]
Net sales	652	659	1,892	1,816
Operating income	67	60	154	151
Depreciation and amortization	50	$ 59	156	$ 169
Total assets	3,140		3,140		3,220
Total goodwill	$ 1,409		$ 1,409		$ 1,410