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Supplemental cash flow information (Tables) | 6 Months Ended
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Jun. 30, 2024
Supplemental Cash Flow Elements [Abstract] |
Schedule of supplemental cash flow information | A summary of supplemental cash flow information follows (in millions).
|  | First Six Months |
|  | 2024 |  |  | 2023 |
Cash paid during the period for: |  |  |  |  |  |
Income taxes |  | $ | 2,159 |  |  | $ | 2,962 |
Interest: |  |  |  |  |  |
Insurance and other |  |  | 671 |  |  |  | 725 |
Railroad, utilities and energy |  |  | 1,797 |  |  |  | 1,857 |
Non-cash investing and financing activities: |  |  |  |  |  |
Liabilities assumed in connection with business acquisitions |  |  | 19 |  |  |  | 10,815 |

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