v3.26.3
Goodwill and Acquired Intangible Assets - Schedule of Goodwill by Segments (Detail) - USD ($)
$ in Thousands
Sep. 30, 2026
Mar. 31, 2026
Goodwill [Line Items]    
Goodwill $ 1,624,401 $ 1,625,013
Communication Services [Member]    
Goodwill [Line Items]    
Goodwill 1,584,077 1,584,603
Defense and Advanced Technologies [Member]    
Goodwill [Line Items]    
Goodwill $ 40,324 $ 40,410