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LEASES - Schedule of Net Book Value of Assets Subject to Leases (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items] |  |  |
Lessor asset under operating lease, accumulated depreciation | $ 1,180 | $ 941 |
Operating lease equipment, net | 9,621 | 9,323 | $ 8,746
Railcars and locomotives |  |  |
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items] |  |  |
Operating lease equipment, net | 8,882 | 8,573 |
Other equipment |  |  |
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items] |  |  |
Operating lease equipment, net | 739 | 750 |
Off-lease rail equipment |  |  |
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items] |  |  |
Operating lease equipment, net | $ 258 | $ 219 |

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