Supplemental balance sheet and cash flow information (inventories and supplies) (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Inventories and supplies | ||
| Finished and semi-finished goods | $ 26.3 | $ 27.0 |
| Raw materials and supplies | 19.1 | 17.7 |
| Reserve for excess and obsolete items | (10.4) | (11.2) |
| Inventories and supplies, net of reserve | $ 35.0 | $ 33.5 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount before valuation reserves of merchandise or goods held by the entity that are readily available for sale and items held by the entity which are partially complete or in the process of being readied for sale. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of valuation reserve for inventory. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|