Restructuring and Transaction Activities, Restructuring Charges by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Restructuring Charges [Abstract]
Restructuring and transaction activities	$ (132)	$ 36	$ 24
Consumer Packaging International [Member]
Restructuring Charges [Abstract]
Restructuring and transaction activities	54	0	0
Consumer Packaging North America [Member]
Restructuring Charges [Abstract]
Restructuring and transaction activities	12	3	8
Engineered Materials [Member]
Restructuring Charges [Abstract]
Restructuring and transaction activities	2	6	5
Health, Hygiene & Specialties [Member]
Restructuring Charges [Abstract]
Restructuring and transaction activities	$ (200)	$ 27	$ 11