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v3.24.3

Other noncurrent liabilities - Other noncurrent liabilities (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Other noncurrent liabilities |  |
Accrued development costs | $ 35.7 | $ 42.3
Operating lease liabilities | $ 18.1 | $ 18.6
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Total | Total
Insurance claims and expenses | $ 15.0 | $ 14.9
Asset retirement obligations | 14.5 | 7.2
Deferred income | 12.3 | 15.5
Other postretirement benefits | 7.2 | 7.4
Employee benefits | 4.7 | 4.9
Earn-out liability | 4.2 |
Accrued litigation settlement |  | 16.1
Other | 0.6 | 0.6
Total | $ 112.3 | $ 127.5

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