Acquisitions (Details) $ / shares in Units, shares in Millions, $ in Millions				9 Months Ended
		Jul. 28, 2026 USD ($) shares	Dec. 18, 2025 USD ($) shares	Jun. 28, 2026 USD ($) numberOfBusinesses $ / shares shares	Sep. 28, 2025 USD ($)
Acquisitions
Goodwill				$ 14,274	$ 11,358
Alphawave
Acquisitions
Business Combination, Consideration Transferred			$ 2,300
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Value			$ 1,800
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares | shares			11
Payments to Acquire Businesses, Gross			$ 301
Cash			51
Intangible assets subject to amortization			239
In-process research and development (IPR&D)			107
Goodwill			2,210
Other assets			288
Total assets			2,895
Convertible debt (1)	[1]		(278)
Other liabilities			(343)
Total liabilities			(621)
Net assets acquired			$ 2,274
Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period			5 years
Business Combination, Goodwill, Expected Tax Deductible, Amount			$ 0
Alphawave | Exchangeable Shares
Acquisitions
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Value			453
Common Stock, No Par Value | $ / shares				$ 0
Common Stock, Shares Authorized, Unlimited [Fixed List]				Unlimited
Common Stock, Other Shares, Outstanding | shares				4
Exchangeable Shares Issued, Fair Value			$ 746
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period			4 years
2026 Other Business Acquisitions
Acquisitions
Payments to Acquire Businesses, Gross				$ 1,100
Intangible assets subject to amortization				295
Goodwill				$ 737
Business Combination, Number of Businesses Acquired | numberOfBusinesses				7
2026 Other Business Acquisitions | QCT
Acquisitions
Goodwill				$ 661
2026 Other Business Acquisitions | Data Center Operating Segment
Acquisitions
Goodwill				$ 76
Modular | Subsequent Event
Acquisitions
Business Combination, Consideration Transferred		$ 3,100
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares | shares		18
Modular | Executive shares subject to service requirements | Subsequent Event
Acquisitions
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Value		$ 700
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares | shares		4
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period		4 years

[1] Alphawave's outstanding unsecured convertible bonds were settled in the second quarter of fiscal 2026.