Financial Instruments and Fair Value Measurements - Assets Measured at Fair Value on Non-recurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Jun. 28, 2025	Sep. 28, 2024
Financial Instruments and Fair Value Measurements [Abstract]
Indefinite-lived trademarks	$ 26	$ 26
Goodwill	726	624
Impairment charges	0	(171)
Definite lived intangible assets	185	200
Impairment charges	0	(1)
Property, plant, and equipment	1,473	949
Impairment charges	0	0
Total	2,410	1,799
Impairment charges	0	(172)
Level 3 [Member]
Financial Instruments and Fair Value Measurements [Abstract]
Indefinite-lived trademarks	26	26
Goodwill	726	624
Definite lived intangible assets	185	200
Property, plant, and equipment	1,473	949
Total	2,410	1,799
Level 1 [Member]
Financial Instruments and Fair Value Measurements [Abstract]
Goodwill	0	0
Definite lived intangible assets	0	0
Property, plant, and equipment	0	0
Total	0	0
Level 2 [Member]
Financial Instruments and Fair Value Measurements [Abstract]
Goodwill	0	0
Definite lived intangible assets	0	0
Property, plant, and equipment	0	0
Total	$ 0	$ 0