v3.26.3
Segment Information - Depreciation and Amortization (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Total depreciation and amortization $ 20.9 $ 27.7 $ 65.6 $ 77.4
Indirect costs allocated to Divestiture        
Segment Reporting [Line Items]        
Total depreciation and amortization 0.0 1.1 0.0 3.1
Performance Materials | Operating Segments        
Segment Reporting [Line Items]        
Total depreciation and amortization 11.7 11.3 33.7 31.1
Pavement Technologies | Operating Segments        
Segment Reporting [Line Items]        
Total depreciation and amortization 3.2 6.4 10.2 18.3
Advanced Polymer Technologies segment | Operating Segments        
Segment Reporting [Line Items]        
Total depreciation and amortization $ 6.0 $ 8.9 $ 21.7 $ 24.9