Acquisitions - Narrative (Details) $ in Millions					12 Months Ended
		May 02, 2023 USD ($)	Mar. 15, 2023 USD ($)	Aug. 31, 2021 USD ($)	Oct. 31, 2023 USD ($) businessAcquired	Oct. 31, 2021 businessAcquired	Oct. 31, 2022 USD ($)
Acquisitions:
Number of acquisitions | businessAcquired					5	4
Goodwill	[1]				$ 17,988		$ 17,403
OpsRamp
Acquisitions:
Total fair value of consideration		$ 307
Goodwill		217
Amortizable intangible assets		$ 84
Weighted-average useful life		5 years
Axis Security
Acquisitions:
Total fair value of consideration			$ 412
Goodwill			311
Amortizable intangible assets			$ 71
Weighted-average useful life			5 years
Zerto
Acquisitions:
Total fair value of consideration				$ 416
Goodwill				214
Amortizable intangible assets				$ 212
Weighted-average useful life				7 years

[1] Goodwill is net of accumulated impairment losses of $1.9 billion. Of this amount, $1.7 billion relates to HPC & AI of which $815 million was recorded during the fourth quarter of fiscal 2022. The Software reporting unit within Corporate Investments and Other, has an accumulated impairment loss of $90 million which was also recorded during the fourth quarter of fiscal 2022.