Acquisition - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Mar. 31, 2025
Business Acquisition [Line Items]
Preliminary estimated goodwill	$ 1,626,078		$ 1,626,078		$ 1,622,132
Total revenues	1,140,893	$ 1,122,262	2,311,947	$ 2,248,722
Net losses	61,444	$ 137,584	117,878	$ 170,496
Communication Services [Member]
Business Acquisition [Line Items]
Preliminary estimated goodwill	$ 1,585,542		$ 1,585,542		$ 1,582,083