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Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2023
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Oct. 31, 2023
Dec. 31, 2022
Dec. 31, 2018
Income tax contingencies                
Valuation allowance, deferred tax asset, decrease   $ (177,900)            
Unrecognized tax benefits   $ 184,921 $ 108,002   $ 203,794   $ 164,531  
Long-term taxes receivable, excluding interest     3,282   109,947      
Long-term tax payable, excluding interest     1,393   109,383      
Undistributed foreign earnings     59,100          
Undistributed foreign earnings, estimated foreign withholding taxes     1,300          
Long-term deferred tax assets                
Income tax contingencies                
Unrecognized tax benefits     24,300   22,800      
Long-term income taxes payable                
Income tax contingencies                
Unrecognized tax benefits     1,000   106,200      
California Franchise Tax Board | State and local tax authority                
Income tax contingencies                
Operating loss carryforwards     171,900          
Tax credit carryforwards, alternative minimum tax credit     500          
National Tax Services | Foreign tax authority                
Income tax contingencies                
Long-term taxes receivable, excluding interest $ 0     $ 114,900 105,100 $ 82,700    
Reduction in income tax receivable 32,200              
Portion of unrecognized tax benefits, which if recognized, would be recorded as an income tax benefit       32,200        
Long-term tax payable, excluding interest     0 $ 114,900 105,100      
National Tax Services | Foreign tax authority | Tax year 2018                
Income tax contingencies                
Portion of unrecognized tax benefits, which if recognized, would be recorded as an income tax benefit               $ 74,800
National Tax Services | Foreign tax authority | Other assets                
Income tax contingencies                
Unrecognized tax benefits     82,700   $ 74,800      
National Tax Services | Foreign tax authority | Long-term income taxes payable                
Income tax contingencies                
Unrecognized tax benefits $ 82,700              
Research and development tax credit carryforward | California Franchise Tax Board | State and local tax authority                
Income tax contingencies                
Tax credit carryforwards     32,600          
Research and development tax credit carryforward | Federal                
Income tax contingencies                
Tax credit carryforwards     48,900          
Foreign tax credit                
Income tax contingencies                
Tax credit carryforwards     $ 1,300