v3.26.1
Acquisitions and Divestitures - Additional Information (Details)
$ in Thousands, $ in Millions
 12 Months Ended
May 20, 2025
USD ($)
employee
site
May 20, 2025
CAD ($)
Jan. 03, 2025
USD ($)
Dec. 31, 2026
USD ($)
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Business Combination [Line Items]            
Goodwill         $ 494,922 $ 500,860
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Medical Business | Forecast            
Business Combination [Line Items]            
Value of transaction       $ 800,000    
Aerojet Ordnance Tennessee, Inc.            
Business Combination [Line Items]            
Business combination, consideration transferred     $ 101,100      
Goodwill     75,000      
Property, plant, and equipment     $ 12,700      
Kinectrics Holdings, Inc.            
Business Combination [Line Items]            
Goodwill $ 132,600          
Property, plant, and equipment 174,900          
Business combination, price of acquisition, expected   $ 782.7        
Business combination, consideration transferred, net of pension plan liabilities and indebtedness $ 440,600 $ 614.5        
Number of employees (over) | employee 1,300          
Number of sites | site 20          
Intangible assets $ 151,300          
Investments in unconsolidated affiliates 39,500          
Net working capital 25,400          
Pension liabilities and other postretirement obligations $ 90,300