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Commitments and Contingencies - Schedule of Number of Locomotives and Payments under Long-term Maintenance Program (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract] |  |  |
Amounts Paid | $ 200 | $ 168 | $ 99
Cost, maintenance prepayments |  | $ 40 |

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- Definition Cost, Maintenance Prepayments + References No definition available. + Details
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- Definition Cost of maintenance incurred and directly related to good produced and service rendered. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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