v3.26.1
Acquisition - Additional Information (Detail) - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
May 30, 2023
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Business Acquisition [Line Items]        
Preliminary estimated goodwill   $ 1,625,013 $ 1,622,132  
Total revenues   4,640,280 4,519,571 $ 4,283,758
Net losses   34,086 574,962 1,068,904
Operating Expense [Member]        
Business Acquisition [Line Items]        
Severance costs       48,000
Inmarsat Holdings [Member]        
Business Acquisition [Line Items]        
Preliminary estimated goodwill $ 1,462,881      
The consideration transferred 2,700,000      
Payments to acquire business 550,700      
Unfavorable contract liabilities included in current liabilities 29,600      
Unfavorable contract liabilities included in other long term liabilities 248,300      
Issuance of common stock in connection with acquisition $ 2,100,000      
Shares issued in connection with acquisition of business, net of issuance costs, shares 46,360      
Total revenues       1,400,000
Net losses       214,600
Inmarsat Holdings [Member] | Selling General and Administrative Expenses [Member]        
Business Acquisition [Line Items]        
Acquisition-related transaction costs       $ 31,300
Communication Services [Member]        
Business Acquisition [Line Items]        
Preliminary estimated goodwill   $ 1,584,603 $ 1,582,083  
Communication Services [Member] | Inmarsat Holdings [Member]        
Business Acquisition [Line Items]        
Preliminary estimated goodwill $ 1,500,000