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Supplementary Financial Information - Schedule of Net Revenue by Region (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Disaggregation of Revenue [Line Items]
Total net revenue	$ 13,932	$ 13,519	$ 40,656	$ 39,504
Americas
Disaggregation of Revenue [Line Items]
Total net revenue	6,107	6,086	17,419	17,085
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total net revenue	4,502	4,420	13,649	13,461
Asia-Pacific and Japan
Disaggregation of Revenue [Line Items]
Total net revenue	$ 3,323	$ 3,013	$ 9,588	$ 8,958

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