Accounting for Leases as a Lessor - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | 12 Months Ended |
|---|---|---|---|
Jul. 31, 2025 |
Jul. 31, 2025 |
Oct. 31, 2024 |
|
| Lessor, Lease, Description [Line Items] | |||
| Financing receivable term, low end of range | 2 years | ||
| Financing receivable term, high end of range | 5 years | ||
| Financing receivable sold | $ 17 | $ 164 | $ 93 |
| Financing Receivable | |||
| Lessor, Lease, Description [Line Items] | |||
| Amount transferred via securitization | 700 | 700 | 1,200 |
| Operating Lease, Right-of-Use Asset | |||
| Lessor, Lease, Description [Line Items] | |||
| Amount transferred via securitization | $ 300 | $ 300 | $ 600 |