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Railway Operating Revenues - Narrative (Details) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disaggregation of Revenue [Line Items] |  |  |
Average transit days (or less) | 7 days |  |
Revenue, payment terms | 15 days |  |
Accessorial Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Accessorial services percent of total railway operating revenues | 5.00% | 7.00% | 7.00%

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