Taxes on Earnings - Schedule of Deferred Tax Assets for Net Operating Loss Carryforwards (Details) - USD ($) $ in Millions |
Oct. 31, 2025 |
Oct. 31, 2024 |
Oct. 31, 2023 |
Oct. 31, 2022 |
|---|---|---|---|---|
| Operating Loss Carryforwards [Line Items] | ||||
| Valuation allowance | $ (6,479) | $ (6,688) | $ (6,994) | $ (7,592) |
| Operating loss carryforwards | ||||
| Operating Loss Carryforwards [Line Items] | ||||
| Gross NOLs | 25,984 | |||
| Deferred Taxes on NOLs | 6,575 | |||
| Valuation allowance | (6,051) | |||
| Federal | Operating loss carryforwards | ||||
| Operating Loss Carryforwards [Line Items] | ||||
| Gross NOLs | 33 | |||
| Deferred Taxes on NOLs | 7 | |||
| Valuation allowance | (1) | |||
| State | Operating loss carryforwards | ||||
| Operating Loss Carryforwards [Line Items] | ||||
| Gross NOLs | 1,817 | |||
| Deferred Taxes on NOLs | 97 | |||
| Valuation allowance | (23) | |||
| Foreign | Operating loss carryforwards | ||||
| Operating Loss Carryforwards [Line Items] | ||||
| Gross NOLs | 24,134 | |||
| Deferred Taxes on NOLs | 6,471 | |||
| Valuation allowance | $ (6,027) |