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	3 Months Ended		9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Derivative Instruments, Gain (Loss)
(Loss) Gain Recognized in Earnings on Derivatives	$ (62)	$ 6	$ (128)	$ (3)
Interest and other, net | Foreign currency contracts
Derivative Instruments, Gain (Loss)
(Loss) Gain Recognized in Earnings on Derivatives	(59)	5	(116)	(4)
Interest and other, net | Other derivatives
Derivative Instruments, Gain (Loss)
(Loss) Gain Recognized in Earnings on Derivatives	$ (3)	$ 1	$ (12)	$ 1