FAIR VALUE MEASUREMENTS, Non Marketable Securities (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
Jul. 31, 2026 |
Jul. 31, 2025 |
|
| Fair Value Disclosures [Abstract] | ||||
| Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount | $ 0 | $ 0 | $ 0 | $ 0 |
| Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount | 5 | 2 | 6 | 29 |
| Impairment of investments, Annual Amount | $ 0 | $ 0 | $ 0 | $ 15 |