The Company and a Summary of Its Significant Accounting Policies - Summary of Contract Assets and Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025
Accounting Policies [Abstract]
Unbilled accounts receivable	$ 227,840	$ 180,871
Collections in excess of revenues and deferred revenues	292,592	294,034
Deferred revenues, long-term portion	$ 1,064,261	$ 786,710