Pending Acquisition - Schedule of Acquisition-Related Expense Associated with the Merger Agreement (Details) $ in Millions |
12 Months Ended |
|---|---|
|
Dec. 31, 2025
USD ($)
| |
| Business Combination [Line Items] | |
| Business Combination Separately Recognized Transaction Acquisition Related Cost Expensed Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag | Total acquisition-related expense [a] |
| Norfolk Southern | |
| Business Combination [Line Items] | |
| Total acquisition-related expense | $ 72 |
| Norfolk Southern | Purchased services and materials | |
| Business Combination [Line Items] | |
| Total acquisition-related expense | 68 |
| Norfolk Southern | Other | |
| Business Combination [Line Items] | |
| Total acquisition-related expense | $ 4 |
| X | ||||||||||
- Definition Business Combination Separately Recognized Transaction Acquisition Related Cost Expensed Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag No definition available.
|
| X | ||||||||||
- 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/disclosureRef
|
| X | ||||||||||
- Definition Amount of expense for acquisition-related cost incurred to effect business combination and recognized separately from acquisition of asset and assumption of liability. Includes, but is not limited to, finder's fee and advisory, legal, accounting, valuation, and other professional and consulting fees. Excludes integration, restructuring, and other post-combination costs; cost related to acquisition of asset; and acquisition-related cost for transaction with third party. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|