Supplementary Financial Information - Schedule of Trade Receivables Sold and Cash Received (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Oct. 31, 2025 |
Oct. 31, 2024 |
Oct. 31, 2023 |
|
| Receivables Sold but Not Collected from Third Party | |||
| Balance at beginning of year | $ 284 | $ 141 | $ 185 |
| Trade receivables sold | 11,830 | 12,200 | 13,391 |
| Cash receipts | (12,006) | (12,063) | (13,449) |
| Foreign currency and other | 9 | 6 | 14 |
| Balance at end of year | $ 117 | $ 284 | $ 141 |