Accounting for Leases as a Lessor - Schedule of Lessor Lease Activity (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
Jul. 31, 2026 |
Jul. 31, 2025 |
|
| Leases [Abstract] | ||||
| Interest income from sales-type leases and direct financing leases | $ 192 | $ 194 | $ 580 | $ 568 |
| Lease income from operating leases | 486 | 542 | 1,494 | 1,628 |
| Total lease income | $ 678 | $ 736 | $ 2,074 | $ 2,196 |