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Dispositions (Details) - USD ($) $ in Millions	12 Months Ended
Dispositions (Details) - USD ($) $ in Millions	Oct. 02, 2021	Sep. 26, 2020	Sep. 28, 2019
Dispositions [Abstract]
Proceeds from sale of business	$ 165	$ 0	$ 326
Net sales	13,850	11,709	$ 8,878
Restructuring and Transaction Activities [Member]
Dispositions [Abstract]
Net pretax loss on divestitures	(22)
U.S. Flexible Packaging Converting Business [Member]
Dispositions [Abstract]
Proceeds from sale of business	140
Net sales		203
U.S. Flexible Packaging Converting Business [Member] \| Other Current Assets [Member]
Dispositions [Abstract]
Assets held for sale		162
U.S. Flexible Packaging Converting Business [Member] \| Other Current Liabilities [Member]
Dispositions [Abstract]
Liabilities held for sale		25
Non-core Czech Republic Reaction Injection Molding Business [Member]
Dispositions [Abstract]
Proceeds from sale of business	$ 22
Net sales		$ 41