v3.26.1
Goodwill (Details) - USD ($)
 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Goodwill    
Goodwill, Beginning Balance $ 431,157,000 $ 431,669,000
Accumulated impairment losses (174,376,000) (156,017,000)
Goodwill, Net - Beginning Balance 256,781,000 275,652,000
Additions to goodwill 2,477,605,000  
Change to goodwill   (512,000)
Impairment of goodwill (240,708,000) (18,359,000)
Goodwill, Ending Balance 2,908,762,000 431,157,000
Accumulated impairment losses (415,084,000) (174,376,000)
Goodwill, Net - Ending Balance 2,493,678,000 256,781,000
UGV    
Goodwill    
Impairment of goodwill   (18,359,000)
AxS    
Goodwill    
Goodwill, Beginning Balance 431,157,000 431,669,000
Accumulated impairment losses (174,376,000) (156,017,000)
Goodwill, Net - Beginning Balance 256,781,000 275,652,000
Additions to goodwill 1,027,665,000  
Change to goodwill   (512,000)
Impairment of goodwill   (18,359,000)
Goodwill, Ending Balance 1,458,822,000 431,157,000
Accumulated impairment losses (174,376,000) (174,376,000)
Goodwill, Net - Ending Balance 1,284,446,000 $ 256,781,000
SCDE    
Goodwill    
Additions to goodwill 1,449,940,000  
Impairment of goodwill (240,708,000)  
Goodwill, Ending Balance 1,449,940,000  
Accumulated impairment losses (240,708,000)  
Goodwill, Net - Ending Balance 1,209,232,000  
Space reporting unit    
Goodwill    
Impairment of goodwill $ (240,708,000)