Accounting for Leases as a Lessor - Lessor Activity Included in Income Statement (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2025 |
Jul. 31, 2024 |
Jul. 31, 2025 |
Jul. 31, 2024 |
|
| Leases [Abstract] | ||||
| Interest income from sales-type leases and direct financing leases | $ 194 | $ 168 | $ 568 | $ 486 |
| Lease income from operating leases | 542 | 578 | 1,628 | 1,771 |
| Total lease income | $ 736 | $ 746 | $ 2,196 | $ 2,257 |