Restructuring and Other Charges - Narrative (Details) employee in Thousands, $ in Millions		3 Months Ended		9 Months Ended
	Nov. 18, 2022 USD ($) employee	Jul. 31, 2023 USD ($)	Jul. 31, 2022 USD ($)	Jul. 31, 2023 USD ($)	Jul. 31, 2022 USD ($)
Restructuring Cost and Reserve [Line Items]
Other charges		$ 25	$ 7	$ 57	$ 12
Fiscal 2023 Plan | Labor and Non-Labor Actions
Restructuring Cost and Reserve [Line Items]
Estimated pre-tax charges	$ 1,000
Fiscal 2023 Plan | Labor Costs
Restructuring Cost and Reserve [Line Items]
Estimated pre-tax charges	$ 700
Minimum | Fiscal 2023 Plan
Restructuring Cost and Reserve [Line Items]
Expected positions to be eliminated | employee	4
Maximum | Fiscal 2023 Plan
Restructuring Cost and Reserve [Line Items]
Expected positions to be eliminated | employee	6