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Accounts Payable and Accrued Liabilities | 12 Months Ended
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Dec. 31, 2024
Accounts Payable and Accrued Liabilities [Abstract] |
Accounts Payable and Accrued Liabilities [Text Block] | ACCOUNTS PAYABLE AND ACCRUED LIABILITIES Components of accounts payable and accrued liabilities follow (in millions):
| December 31,
| 2024 |  | 2023
Trade payables | $ | 5.8 |  |  | $ | 6.1 |
Compensation and employee benefits | 19.9 |  |  | 21.1 |
Postretirement health and life benefit obligations - current | 9.5 |  |  | 10.1 |
Accrued interest on 2.25% Convertible Notes | 1.3 |  |  | — |
Operating lease liability | 1.4 |  |  | 1.4 |
Other accrued liabilities | 0.9 |  |  | 3.2 |
Total accounts payable and accrued liabilities | $ | 38.8 |  |  | $ | 41.9 |

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