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Sales of Railway Lines (Details) - USD ($) $ in Millions |  |  | 9 Months Ended | 40 Months Ended
--- | --- | --- | --- | ---
Sep. 06, 2024 | Sep. 05, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2027
Property, Plant and Equipment [Line Items] |  |  |  |  |
Cash proceeds from sale of railway line |  |  | $ 120 | $ 527 |
Railway Line | VPRA |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Cash proceeds from sale of railway line |  | $ 315 |  |  |
Gain on sale of railway line |  | $ 323 |  |  |
Railway Line | VPRA | Forecast |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Cash proceeds from sale of railway line |  |  |  |  | $ 357
Railway Line | City of Charlotte |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Cash proceeds from sale of railway line | $ 74 |  |  |  |
Gain on sale of railway line | $ 57 |  |  |  |

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-12 + Details
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