Accounting for Leases as a Lessor - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | 12 Months Ended |
|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2026 |
Oct. 31, 2025 |
|
| Lessor, Lease, Description [Line Items] | |||
| Financing receivable term, low end of range (in years) | 2 years | ||
| Financing receivable term, high end of range (in years) | 5 years | ||
| Financing receivable sold | $ 20 | $ 103 | $ 196 |
| Financing Receivable | |||
| Lessor, Lease, Description [Line Items] | |||
| Amount transferred via securitization | 0 | 0 | 1,300 |
| Operating Lease, Right-of-Use Asset | |||
| Lessor, Lease, Description [Line Items] | |||
| Amount transferred via securitization | $ 0 | $ 0 | $ 400 |