Merger Agreement (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Jul. 28, 2025 |
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| Business Combination [Line Items] | |||||
| Merger-related expenses | $ 42 | $ 15 | $ 145 | $ 15 | |
| Union Pacific Merger | Union Pacific | |||||
| Business Combination [Line Items] | |||||
| Specified termination fee | $ 2,500 | ||||
| Union Pacific Merger | Norfolk Southern | |||||
| Business Combination [Line Items] | |||||
| Specified termination fee | $ 2,500 | ||||
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- Definition Business Combination, Specified Termination Fee No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of expense for acquisition-related cost incurred to effect business combination. Includes, but is not limited to, finder's fee; advisory, legal, accounting, valuation, and other professional and consulting fees; and general administrative cost, including cost of maintaining internal acquisition department. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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