v3.26.1
Goodwill and Acquired Intangible Assets - Schedule of Goodwill by Segment (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Mar. 31, 2025
Goodwill [Line Items]    
Goodwill $ 1,625,013 $ 1,622,132
Communication Services [Member]    
Goodwill [Line Items]    
Goodwill 1,584,603 1,582,083
Defense and Advanced Technologies [Member]    
Goodwill [Line Items]    
Goodwill $ 40,410 $ 40,049