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v3.26.1

Other Financial Information | 3 Months Ended
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Mar. 31, 2026
Other Financial Information [Abstract] |
Other Financial Information | Note F – Other Financial Information Supplemental Information to Statement of Cash Flows
| Three Months Ended March 31,
(Thousands of dollars) | 2026 |  | 2025
Net (increase) decrease in operating working capital, excluding cash and cash equivalents: |  |  |
(Increase) decrease in accounts receivable | $ | (120,525) |  |  | $ | (10,089) |
(Increase) decrease in inventories | (479) |  |  | (15,851) |
(Increase) decrease in prepaid expenses | 2,799 |  |  | 10,502 |
Increase (decrease) in accounts payable and accrued liabilities | 8,752 |  |  | (13,560) |
Increase (decrease) in income taxes payable | 1,481 |  |  | 6,214 |
Net (increase) decrease in non-cash working capital | $ | (107,972) |  |  | $ | (22,784) |
Supplementary disclosures: |  |  |
Interest paid, net of amounts capitalized of $3.9 million in 2026 and $1.1 million in 2025 | $ | 4,897 |  |  | $ | 6,347 |
Non-cash investing activities: |  |  |
Asset retirement costs capitalized | $ | 8,843 |  |  | $ | 8,996 |
(Increase) decrease in capital expenditure accrual | (54,000) |  |  | (42,442) |

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- Definition The entire disclosures of supplemental information, including descriptions and amounts, related to the balance sheet, income statement, and/or cash flow statement. + References No definition available. + Details
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