Revenues - Accounts Receivable, Net (Details) - USD ($) $ in Millions |
Mar. 31, 2024 |
Dec. 31, 2023 |
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total Accounts Receivable - Net | $ 1,400 | $ 1,393 |
| Freight Receivables | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts Receivable, gross | 1,060 | 1,047 |
| Allowance for Credit Losses | (18) | (18) |
| Total Accounts Receivable - Net | 1,042 | 1,029 |
| Non-Freight Receivables | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts Receivable, gross | 370 | 378 |
| Allowance for Credit Losses | (12) | (14) |
| Total Accounts Receivable - Net | $ 358 | $ 364 |
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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. No definition available.
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- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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