Equipment held for lease (Detail) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Property Subject to or Available for Operating Lease [Line Items] | ||
| Equipment held for lease, gross | $ 32,588 | $ 31,892 |
| Equipment held for lease, accumulated depreciation | (13,676) | (13,357) |
| Equipment held for lease, net | 18,912 | 18,535 |
| Railcars [Member] | ||
| Property Subject to or Available for Operating Lease [Line Items] | ||
| Equipment held for lease, gross | 10,269 | 10,355 |
| Aircraft [Member] | ||
| Property Subject to or Available for Operating Lease [Line Items] | ||
| Equipment held for lease, gross | 16,637 | 15,877 |
| Other [Member] | ||
| Property Subject to or Available for Operating Lease [Line Items] | ||
| Equipment held for lease, gross | $ 5,682 | $ 5,660 |