Basis of Presentation (Tables)

6 Months Ended

Sep. 30, 2025

Accounting Policies [Abstract]

Summary of Disaggregation of Revenue by Segment and Products and Services

The following sets forth disaggregated reported revenue by segment and products and services for the three and six months ended September 30, 2025 and 2024:

	Three Months Ended September 30, 2025
	Communication Services		Defense and Advanced Technologies		Total Revenues
	(In thousands)
Service revenues	$	769,817	$	51,693	$	821,510
Product revenues		66,838		252,545		319,383
Total revenues	$	836,655	$	304,238	$	1,140,893
	Six Months Ended September 30, 2025
	Communication Services		Defense and Advanced Technologies		Total Revenues
	(In thousands)
Service revenues	$	1,547,015	$	100,865	$	1,647,880
Product revenues		117,011		547,056		664,067
Total revenues	$	1,664,026	$	647,921	$	2,311,947

	Three Months Ended September 30, 2024
	Communication Services		Defense and Advanced Technologies		Total Revenues
	(In thousands)
Service revenues	$	747,894	$	50,420	$	798,314
Product revenues		78,491		245,457		323,948
Total revenues	$	826,385	$	295,877	$	1,122,262
	Six Months Ended September 30, 2024
	Communication Services		Defense and Advanced Technologies		Total Revenues
	(In thousands)
Service revenues	$	1,514,505	$	104,530	$	1,619,035
Product revenues		138,667		491,020		629,687
Total revenues	$	1,653,172	$	595,550	$	2,248,722

Summary of Contract Assets and Liabilities

The following table presents contract assets and liabilities as of September 30, 2025 and March 31, 2025:

	As of  September 30, 2025		As of  March 31, 2025
	(In thousands)
Unbilled accounts receivable	$	175,829	$	180,871
Collections in excess of revenues and deferred revenues		288,357		294,034
Deferred revenues, long-term portion		777,631		786,710