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Other Financial Information | 6 Months Ended
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Jun. 30, 2023
Other Financial Information [Abstract] |
Other Financial Information | Note F – Other Financial Information Additional disclosures regarding cash flow activities are provided below.
| Six Months Ended June 30,
(Thousands of dollars) | 2023 |  | 2022
Net (increase) decrease in operating working capital, excluding cash and cash equivalents: |  |  |
(Increase) in accounts receivable | $ | (18,915) |  |  | $ | (263,104) |
(Increase) decrease in inventories | (8,353) |  |  | (10,092) |
(Increase) decrease in prepaid expenses | 8,291 |  |  | (1,693) |
Increase in accounts payable and accrued liabilities ¹ | 6,642 |  |  | 147,790 |
Increase (decrease) in income taxes payable | (3,005) |  |  | 5,501 |
Net increase in noncash working capital | $ | (15,340) |  |  | $ | (121,598) |
Supplementary disclosures: |  |  |
Cash income taxes paid, net of refunds | $ | 10,904 |  |  | $ | 1,783 |
Interest paid, net of amounts capitalized of $6.8 million in 2023 and $10.4 million in 2022 | 54,305 |  |  | 78,747 |
Non-cash investing activities: |  |  |
Asset retirement costs capitalized | $ | 2,742 |  |  | $ | 9,007 |
(Increase) decrease in capital expenditure accrual | 20,522 |  |  | (1,929) |
1 Excludes payable balances relating to mark-to-market of derivative instruments and contingent consideration relating to acquisitions.

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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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