Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) shares in Millions, $ in Billions	12 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
Significant Accounting Policies [Line Items]
Potentially dilutive securities excluded from the computation of diluted earnings per share because their effect would have been antidilutive (in shares)			62
Depreciation and amortization expense on property and equipment	$ 9.5	$ 9.7	$ 11.3
Noncash activities involving property, plant and equipment, net decrease to accounts payable and other current liabilities			$ 2.9
Buildings | Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	40 years
Machinery and equipment, including product tooling and manufacturing process equipment | Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	1 year
Machinery and equipment, including product tooling and manufacturing process equipment | Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	5 years
Internal-use software | Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	5 years
Internal-use software | Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	7 years