Financial Instruments and Fair Value Measurements - Schedule of Assets Measured at Fair Value on Non-recurring Basis (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 28, 2024	Sep. 28, 2024
Impairment
Total	$ (172)
Fair Value, Nonrecurring
Assets, Fair Value Disclosure [Abstract]
Indefinite-lived trademarks	26	$ 26
Goodwill	617	624
Definite lived intangible assets	233	200
Property, plant, and equipment	1,532	949
Total	2,408	1,799
Impairment
Indefinite-lived trademarks	0	0
Goodwill	0	(171)
Definite lived intangible assets	0	(1)
Property, plant, and equipment	0	0
Total	0	(172)
Level 1 | Fair Value, Nonrecurring
Assets, Fair Value Disclosure [Abstract]
Indefinite-lived trademarks	0	0
Goodwill	0	0
Definite lived intangible assets	0	0
Property, plant, and equipment	0	0
Total	0	0
Level 2 | Fair Value, Nonrecurring
Assets, Fair Value Disclosure [Abstract]
Indefinite-lived trademarks	0	0
Goodwill	0	0
Definite lived intangible assets	0	0
Property, plant, and equipment	0	0
Total	0	0
Level 3 | Fair Value, Nonrecurring
Assets, Fair Value Disclosure [Abstract]
Indefinite-lived trademarks	26	26
Goodwill	617	624
Definite lived intangible assets	233	200
Property, plant, and equipment	1,532	949
Total	$ 2,408	$ 1,799