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
	Jan. 31, 2020	Jan. 31, 2019
Derivative Instruments, Gain (Loss)
(Loss) /Gain Recognized in Earnings on Derivatives	$ (3)	$ (26)
Interest and other, net | Foreign currency contracts
Derivative Instruments, Gain (Loss)
(Loss) /Gain Recognized in Earnings on Derivatives	(8)	(40)
Interest and other, net | Other derivatives
Derivative Instruments, Gain (Loss)
(Loss) /Gain Recognized in Earnings on Derivatives	$ 5	$ 14