Financial Instruments - Schedule of Pre-Tax Effect of Derivative Instruments not Designated as Hedging Instruments on the Consolidated Condensed Statements of Earnings (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Gain/ (loss) recognized in earnings on derivative instrument	$ 31	$ (105)	$ 26
Interest and other, net | Foreign currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain/ (loss) recognized in earnings on derivative instrument	40	(119)	35
Interest and other, net | Other derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Gain/ (loss) recognized in earnings on derivative instrument	$ (9)	$ 14	$ (9)