v3.26.1
Reconciliation of Total Segment Adjusted EBITDA to Income Before Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
Total segment adjusted EBITDA $ 389.6 $ 202.1 $ 698.1 $ 379.8
Interest expense (89.8) (43.1) (179.4) (86.0)
Depreciation and amortization (215.4) (113.5) (397.2) (225.7)
Restructuring and acquisition-related costs (49.8) (16.5) (148.7) (36.2)
Gain on Business Combination Derivative 0.0 46.3 12.9 68.2
Debt refinancing and redemption costs (0.9) 0.0 (3.9) (3.3)
Impairment charge 0.0 (8.0) 0.0 (8.0)
Unrealized foreign exchange loss on acquired U.S. Private Placement Notes (3.5)   (14.4)  
Mark-to-market on nondesignated foreign exchange derivatives assumed as part of the Business Combination with Dowlais (4.5)   (20.1)  
Gain (loss) on disposal of property, plant and equipment (1.3) 0.1 (5.0) (0.3)
Interest income on debt held in escrow     4.6  
Amortization of acquisition intangible asset attributable to SDS (6.8)   (11.2)  
Acquisition-related fair value inventory adjustment 0.0 0.0 (37.7) 0.0
Income (loss) before income taxes $ 17.6 $ 67.4 $ (102.0) $ 88.5