Investments (Details) $ in Millions |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Mar. 31, 2026
USD ($)
railroad
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Mar. 31, 2025
USD ($)
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Dec. 31, 2025
USD ($)
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| Schedule of Investments [Line Items] | |||
| Other liabilities | $ 1,724 | $ 1,723 | |
| Number of railroads | railroad | 6 | ||
| Purchased services and rents | $ 522 | $ 498 | |
| Conrail, Economic | |||
| Schedule of Investments [Line Items] | |||
| Equity method investment, ownership (as a percent) | 58.00% | ||
| Conrail, Voting | |||
| Schedule of Investments [Line Items] | |||
| Equity method investment, ownership (as a percent) | 50.00% | ||
| Conrail Inc | |||
| Schedule of Investments [Line Items] | |||
| Equity method investments | $ 1,800 | 1,800 | |
| Expenses for operation of the Shared Assets Areas | 52 | 49 | |
| Equity in the earnings of investee | 19 | 16 | |
| Other liabilities | $ 534 | $ 534 | |
| Due to affiliate, average interest rate (as a percent) | 1.31% | 1.31% | |
| TTX Company | |||
| Schedule of Investments [Line Items] | |||
| Equity method investment, ownership (as a percent) | 19.78% | ||
| Equity in the earnings of investee | $ 8 | 11 | |
| Purchased services and rents | $ 76 | $ 74 | |
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- Definition Investment, Expenses For Operation Of Shared Assets Areas No definition available.
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- Definition Number Of Railroads Owning Joint Railcar Pooling Company No definition available.
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- Definition The amount of expense for contract services provided to the Company and rent paid for freight cars owned by other railroads or private companies net of rents received, including lease expenses, primarily for locomotives, railcars, containers, and trailers. No definition available.
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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/disclosureRef
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