Segment Information - Revenues by Geographic Area (Detail) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Total revenues	$ 4,640,280	$ 4,519,571	$ 4,283,758
U.S. Customers [Member]
Segment Reporting Information [Line Items]
Total revenues	3,161,146	3,117,233	3,029,303
Non U.S. Customers [Member]
Segment Reporting Information [Line Items]
Total revenues	$ 1,479,134	$ 1,402,338	$ 1,254,455

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details