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Other Financial Information (Tables) | 9 Months Ended
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Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Changes in Working Capital | CHANGES IN WORKING CAPITAL:
|  | Nine Months Ended September 30,
(Millions of dollars) |  | 2023 |  | 2022
Accounts receivable |  | $ | (63.8) |  |  | $ | (60.3) |
Inventories |  | (16.3) |  |  | 11.8 |
Prepaid expenses and other current assets |  | 21.0 |  |  | (8.5) |
Accounts payable and accrued liabilities |  | (49.7) |  |  | 60.5 |
Income taxes payable |  | 11.6 |  |  | 15.3 |
Net (increase) decrease in noncash operating working capital |  | $ | (97.2) |  |  | $ | 18.8 |

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