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Debt (Tables) | 12 Months Ended
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Dec. 31, 2024
Debt Disclosure [Abstract] |
Schedule of Debt | Total debt as of December 31, 2024 and 2023, is summarized below:
Millions | 2024 | 2023
Notes and debentures, 2.2% to 7.1% due through February 14, 2072 | $ | 32,044 |  | $ | 33,383 |
Equipment obligations, 2.6% to 6.2% due through January 2, 2031 [a] | 732 |  | 770 |
Finance leases, 3.1% to 6.8% due through December 10, 2028 | 109 |  | 158 |
Unamortized discount and deferred issuance costs | (1,693) |  | (1,732) |
Total debt | 31,192 |  | 32,579 |
Less: current portion | (1,425) |  | (1,423) |
Total long-term debt | $ | 29,767 |  | $ | 31,156 |
[a]Equipment obligations are secured by an interest in certain railroad equipment with a carrying value of approximately $0.8 billion and $0.9 billion at December 31, 2024 and 2023, respectively.
Schedule of Maturities of Long-Term Debt | The following table presents aggregate debt maturities as of December 31, 2024, excluding market value adjustments:
Millions |
2025 | $ | 1,426 |
2026 | 1,516 |
2027 | 1,285 |
2028 | 1,235 |
2029 | 1,258 |
Thereafter | 26,165 |
Total principal | 32,885 |
Unamortized discount and deferred issuance costs | (1,693) |
Total debt | $ | 31,192 |

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