Accrued Liabilities (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Payables and Accruals [Abstract] | ||
| Accrued benefits | $ 25.6 | $ 25.1 |
| Current portion of postretirement benefit obligation | 1.0 | 1.0 |
| Other taxes payable | 19.9 | 16.6 |
| Current portion of black lung liability | 0.9 | 0.9 |
| Short-term operating lease liabilities | 2.3 | 2.8 |
| Short-term financing lease liabilities | 2.0 | 3.8 |
| Other | 17.8 | 10.6 |
| Total accrued liabilities | $ 69.5 | $ 60.8 |
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- Definition Accrued other taxes payable. No definition available.
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- Definition Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition Amount of liability, recognized in statement of financial position, for pension, other postretirement and postemployment benefits, classified as current. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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