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Commitments and Contingencies - Narrative (Details) $ in Millions	Sep. 30, 2025 USD ($) site
Loss Contingencies [Line Items]
Sites identified	361
Sites subject of actions taken by US government	29
Sites on superfund national priorities list	17
Personal Injury | Minimum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss | $	$ 389
Personal Injury | Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss | $	$ 508

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Sites identified at which Railroad is or may be liable for remediation costs associated with alleged contamination or for violations of environmental requirements.

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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.

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