Basis of Presentation and Summary of Significant Accounting Policies, Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 02, 2021	Sep. 26, 2020	Sep. 28, 2019
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 5,173	$ 5,051
Foreign currency translation adjustment	38	16
Final RPC purchase price valuation		159
Held for sale		(53)
Dispositions	(19)
Goodwill, ending balance	5,192	5,173	$ 5,051
Impairment charges	0	0	0
Consumer Packaging International [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	1,999	1,664
Foreign currency translation adjustment	36	32
Final RPC purchase price valuation		303
Held for sale		0
Dispositions	(19)
Goodwill, ending balance	2,016	1,999	1,664
Consumer Packaging North America [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	1,540	1,691
Foreign currency translation adjustment	1	0
Final RPC purchase price valuation		(151)
Held for sale		0
Dispositions	0
Goodwill, ending balance	1,541	1,540	1,691
Engineered Materials [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	700	733
Foreign currency translation adjustment	(1)	0
Final RPC purchase price valuation		7
Held for sale		(40)
Dispositions	0
Goodwill, ending balance	699	700	733
Health, Hygiene & Specialties [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	934	963
Foreign currency translation adjustment	2	(16)
Final RPC purchase price valuation		0
Held for sale		(13)
Dispositions	0
Goodwill, ending balance	$ 936	$ 934	$ 963

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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