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Other Financial Information (Tables) | 3 Months Ended
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Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Changes in Working Capital | CHANGES IN WORKING CAPITAL:
|  | Three Months Ended March 31,
(Millions of dollars) |  | 2025 |  | 2024
Accounts receivable |  | $ | (3.7) |  |  | $ | (45.7) |
Inventories |  | 37.2 |  |  | 48.6 |
Prepaid expenses and other current assets |  | 1.1 |  |  | (5.7) |
Accounts payable and accrued liabilities |  | 2.9 |  |  | (9.3) |
Income taxes payable |  | (37.2) |  |  | 16.3 |
Net (increase) decrease in noncash operating working capital |  | $ | 0.3 |  |  | $ | 4.2 |

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