v3.25.4
Segment Information - Segment Revenues, Expenses and Operating Profits (Losses) (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Revenues:        
Total revenues $ 1,157,045 $ 1,123,767 $ 3,468,992 $ 3,372,489
Operating Expenses [Abstract]        
Depreciation     771,528 779,675
Stock-based compensation expense     58,928 63,468
Total expenses 1,065,905 1,036,672 3,164,595 3,118,098
Operating profits (losses):        
Amortization of acquired intangible assets (64,838) (65,847) (195,648) (198,086)
Interest income 165,590 17,708 192,405 64,396
Interest expense (87,478) (94,476) (281,322) (315,592)
(Loss) gain on extinguishment of debt, net (11,647) (96,614) (11,935) (99,814)
Other income (expense), net 114 (9,976) (5,050) (9,976)
Income (loss) before income taxes 92,881 (162,110) 2,847 (304,681)
Income (loss) from operations 26,302 21,248 108,749 56,305
Product [Member]        
Revenues:        
Total revenues 334,227 314,397 998,294 944,084
Service [Member]        
Revenues:        
Total revenues 822,818 809,370 2,470,698 2,428,405
Operating Segments [Member]        
Operating profits (losses):        
Income (loss) from operations 91,140 87,095 304,397 254,391
Operating Segments [Member] | Communication Services [Member]        
Revenues:        
Total revenues 825,342 820,347 2,489,368 2,473,519
Operating Expenses [Abstract]        
Depreciation 248,673 244,673 735,641 744,136
Stock-based compensation expense 14,388 12,884 35,190 38,462
Other than acquired intangible assets amortization [1] 9,175 10,289 27,923 31,998
Acquisition and transaction related expenses 4,840 14,061 16,194 45,532
Other segment items [2] 510,238 494,083 1,524,131 1,527,562
Total expenses [3] 787,314 775,990 2,339,079 2,387,690
Operating profits (losses):        
Income (loss) from operations 38,028 44,357 150,289 85,829
Operating Segments [Member] | Communication Services [Member] | Government Satcom Services [Member]        
Revenues:        
Total revenues 202,369 195,048 589,937 558,796
Operating Segments [Member] | Communication Services [Member] | Aviation Services [Member]        
Revenues:        
Total revenues 303,693 263,880 897,317 783,022
Operating Segments [Member] | Communication Services [Member] | Maritime Services [Member]        
Revenues:        
Total revenues 114,949 118,895 350,344 364,021
Operating Segments [Member] | Communication Services [Member] | Fixed Services and Other Services [Member]        
Revenues:        
Total revenues 144,565 181,162 474,993 567,651
Operating Segments [Member] | Communication Services [Member] | Product [Member]        
Revenues:        
Total revenues 59,766 61,362 176,777 200,029
Operating Segments [Member] | Communication Services [Member] | Service [Member]        
Revenues:        
Total revenues 765,576 758,985 2,312,591 2,273,490
Operating Segments [Member] | Defense and Advanced Technologies [Member]        
Revenues:        
Total revenues 331,703 303,420 979,624 898,970
Operating Expenses [Abstract]        
Depreciation 12,484 12,401 35,887 35,539
Stock-based compensation expense 9,711 8,619 23,738 25,006
Other than acquired intangible assets amortization [1] 5,190 4,545 16,733 13,866
Acquisition and transaction related expenses 685 6,794 4,136 12,174
Other segment items [2] 250,521 228,323 745,022 643,823
Total expenses [3] 278,591 260,682 825,516 730,408
Operating profits (losses):        
Income (loss) from operations 53,112 42,738 154,108 168,562
Operating Segments [Member] | Defense and Advanced Technologies [Member] | Information Security and Cyber Defense Products [Member]        
Revenues:        
Total revenues 96,954 89,497 294,030 228,552
Operating Segments [Member] | Defense and Advanced Technologies [Member] | Space and Mission Systems Products [Member]        
Revenues:        
Total revenues 77,490 77,752 243,694 229,840
Operating Segments [Member] | Defense and Advanced Technologies [Member] | Tactical Networking Products [Member]        
Revenues:        
Total revenues 93,900 78,528 236,372 229,972
Operating Segments [Member] | Defense and Advanced Technologies [Member] | Advanced Technologies and Other Products [Member]        
Revenues:        
Total revenues 6,117 7,258 47,421 55,691
Operating Segments [Member] | Defense and Advanced Technologies [Member] | Product [Member]        
Revenues:        
Total revenues 274,461 253,035 821,517 744,055
Operating Segments [Member] | Defense and Advanced Technologies [Member] | Service [Member]        
Revenues:        
Total revenues 57,242 50,385 158,107 154,915
Corporate, Non-Segment [Member]        
Operating profits (losses):        
Amortization of acquired intangible assets (64,838) (65,847) (195,648) (198,086)
Interest income 165,590 17,708 192,405 64,396
Interest expense (87,478) (94,476) (281,322) (315,592)
(Loss) gain on extinguishment of debt, net (11,647) (96,614) (11,935) (99,814)
Other income (expense), net $ 114 $ (9,976) $ (5,050) $ (9,976)
[1] Including amortization of capitalized cloud computing implementation costs.
[2] Other segment items include operating expenses such as cost of service and product revenues, selling, general and administrative expenses, IR&D expenses and related activities excluding allocable portion of depreciation, other than acquired intangibles amortization, stock-based compensation, and certain significant items that are disclosed under each segment.
[3] For the three and nine months ended December 31, 2025, IR&D expense and related activities, including allocable depreciation, stock-based compensation and other expenses were $26.7 million and $67.5 million, respectively, for the communication services segment, and $20.2 million and $55.9 million, respectively, for the defense and advanced technologies segment. For the three and nine months ended December 31, 2024, IR&D expense and related activities, including allocable depreciation, stock-based compensation and other expenses were $21.5 million and $66.9 million, respectively, for the communication services segment, and $15.2 million and $41.7 million, respectively, for the defense and advanced technologies segment.