Segment Information - Revenues by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Total revenues	$ 1,122,262	$ 1,225,415	$ 2,248,722	$ 2,005,206
U.S. Customers [Member]
Segment Reporting Information [Line Items]
Total revenues	776,785	877,421	1,553,280	1,470,583
Non U.S. Customers [Member]
Segment Reporting Information [Line Items]
Total revenues	$ 345,477	$ 347,994	$ 695,442	$ 534,623