Supplementary Financial Information - Net Revenue by Region (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	$ 53,718	$ 62,910	$ 63,460
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	23,095	26,544	27,491
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	17,819	21,300	22,216
Asia-Pacific and Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	$ 12,804	$ 15,066	$ 13,753