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Revenues - Disaggregated by Lines of Business (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disaggregation of Revenue [Line Items] |  |  |
Revenue | $ 14,657 | $ 14,853 | $ 12,522
Total Merchandise |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 8,653 | 8,239 | 7,539
Chemicals |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 2,599 | 2,584 | 2,421
Agricultural and Food Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 1,657 | 1,664 | 1,461
Automotive |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 1,219 | 1,054 | 886
Forest Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 1,012 | 996 | 918
Metals and Equipment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 917 | 828 | 796
Minerals |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 733 | 658 | 587
Fertilizers |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 516 | 455 | 470
Coal |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 2,484 | 2,434 | 1,790
Intermodal |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 2,060 | 2,306 | 2,039
Trucking |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | 882 | 966 | 410
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | $ 578 | $ 908 | $ 744

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