v3.25.4
Segment and Geographic Area Information - Summarized Financial Information by Reportable Segments (Footnote) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Oct. 01, 2025
Dec. 31, 2025
Dec. 31, 2023
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]            
Loss on early extinguishment of debt       $ 7,471 $ 0 $ 0
Mark-to-market (loss) gain on public equity securities         (37,000) (41,400)
Restructuring charges and asset write-offs       7,699 1,134,316 9,491
(Loss) gain in fair value of public equity securities       11,137 (70,758) (44,732)
Gain (loss) on divestiture     $ 71,200 0 0 71,190
charges for asset retirement obligations       3,993 6,608  
Additions and changes in estimates       (34) 11,304 2,541
Legal accrual         0 (218,510)
Other expenses, net            
Segment Reporting Information [Line Items]            
Mark-to-market (loss) gain on public equity securities       11,100    
Restructuring charges and asset write-offs         26,100  
(Loss) gain in fair value of public equity securities       (38,000) (33,700)  
Gain (loss) on from sale of assets         40,900  
charges for asset retirement obligations       1,900 2,900 3,600
Preferred equity gain       19,800 36,300 19,300
Gain (loss) from adjustment of indemnification related to previously disposed businesses       (2,400) 1,800 900
Additions and changes in estimates         (600)  
Gain (loss) from the sale of investments         (2,100) 5,500
Gain resulting from insurance proceeds           7,300
Cost of goods sold            
Segment Reporting Information [Line Items]            
Write-off of assets damaged         4,800  
Non-routine labor costs         1,400  
Additions and changes in estimates           4,100
Legal accrual           (15,100)
Selling, general and administrative expenses            
Segment Reporting Information [Line Items]            
Write-off of assets damaged         9,200  
Severance expense       3,100    
Restructuring charges and asset write-offs       2,200    
Legal fees       2,000 $ 5,300  
(Loss) gain in fair value of public equity securities       $ 1,400    
Gain (loss) on from sale of assets   $ 13,300        
Additions and changes in estimates           (1,900)
Other restructuring costs           2,300
Various expenses           $ 1,800
Windfield Holdings            
Segment Reporting Information [Line Items]            
Ownership percentage   49.00% 49.00% 49.00% 49.00% 49.00%
Nippon Aluminum Alkyls Joint Venture            
Segment Reporting Information [Line Items]            
Gain (loss) on divestiture $ (14,300)          
Line of Credit            
Segment Reporting Information [Line Items]            
Loss on early extinguishment of debt       $ 7,500