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		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Derivative Instruments, Gain (Loss)
Gain Recognized in Earnings on Derivatives	$ (46)	$ (22)	$ (45)	$ (9)
Interest and other, net | Foreign currency contracts
Derivative Instruments, Gain (Loss)
Gain Recognized in Earnings on Derivatives	(47)	(29)	(49)	(8)
Interest and other, net | Other derivatives
Derivative Instruments, Gain (Loss)
Gain Recognized in Earnings on Derivatives	$ 1	$ 7	$ 4	$ (1)