Financial Instruments - Schedule of Pre-Tax Effect of Derivative Instruments in Cash Flow Hedging Relationships Included in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) recognized in Accumulated other comprehensive loss on derivative	$ (162)	$ (623)
Foreign currency contracts | Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) recognized in Accumulated other comprehensive loss on derivative	$ (162)	$ (623)