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Properties - Narrative (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) locomotive
Property, Plant and Equipment [Line Items] |  |  |
Loss on asset disposal | $ (82) | $ (86) | $ (39)
Interest costs incurred on debt | 708 | 657 | 639
Interest costs capitalized | $ 16 | $ 11 | $ 14
Rail and other track material |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Number of locomotives held for sale | locomotive |  |  | 703
Loss on asset disposal |  |  | $ 385
Income tax benefit for locomotive retirement adjustment |  |  | $ 97

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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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