Taxes on Earnings - Schedule of (Benefit from) Provision for Taxes on Earnings (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
U.S. federal taxes:
Current	$ (987)	$ 751	$ 189
Deferred	149	(3,132)	197
Non-U.S. taxes:
Current	386	528	302
Deferred	(3)	(563)	4
State taxes:
Current	(160)	61	20
Deferred	(14)	41	38
Provision for (benefit from) taxes	$ (629)	$ (2,314)	$ 750

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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