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Supplementary Financial Information - Other Non-Current Assets (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Oct. 31, 2018 | Oct. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Tax indemnifications receivable | $ 953 | $ 1,695
Deferred tax assets | 2,431 | 342
Other | 1,685 | 1,058
Other non-current assets, total | 5,069 | 3,095
Adjustment to indemnification receivable | 676 |
Intangible assets | 453 | 3
Available-for-sale investments | $ 53 | $ 61

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