Restructuring and Transaction Activities, Restructuring Charges by Segment (Details) $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
		Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($)	Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($)	Sep. 30, 2023 Segment
Restructuring Charges [Abstract]
Number of segments with cost saving initiatives including plant rationalization | Segment						4
Estimated cost of plant rationalizations		$ 250		$ 250
Restructuring and transaction activities		24	$ 37	133	$ 74
Restructuring costs life to date	[1]	178		178
Loss on divestitures				(57)	0
Consumer Packaging International [Member]
Restructuring Charges [Abstract]
Restructuring and transaction activities		11	17	90	32
Restructuring costs life to date		83		83
Consumer Packaging North America [Member]
Restructuring Charges [Abstract]
Restructuring and transaction activities		6	6	17	14
Restructuring costs life to date		40		40
Health, Hygiene & Specialties [Member]
Restructuring Charges [Abstract]
Restructuring and transaction activities		5	12	23	21
Restructuring costs life to date		30		30
Flexibles [Member]
Restructuring Charges [Abstract]
Restructuring and transaction activities		2	$ 2	3	$ 7
Restructuring costs life to date		$ 25		$ 25

[1] Excludes $57 million loss on divestitures (See Note 4)