Other noncurrent assets (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Other noncurrent assets:
Operating lease right-of-use assets	$ 20.2	$ 19.9
IBNR receivables	16.5	14.8
Restricted cash and cash equivalents	6.0	6.1
Pension asset	18.0	20.4
Other	24.4	20.7
Total	87.2	$ 81.9
Income taxes \| Contran
Other noncurrent assets:
Contran - income taxes	$ 2.1

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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Amount of lessee's right to use underlying asset under operating lease.

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Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer.

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Amount of noncurrent assets classified as other.

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Amount, after allowance for credit loss, of receivable classified as other and noncurrent.

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Estimated amount after valuation allowance of reinsurance recoverables, due from reinsurers for incurred claims not yet reported, and claims settlement expenses.

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Amount of cash and cash equivalent restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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