Income Taxes - Schedule of Income Tax Expense Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Computed expected income taxes	$ 139,882	$ 118,574	$ 105,318
State income taxes, net of federal income tax benefit (1)	15,881	16,896	16,479
Foreign rate differential	(21,420)	(22,188)	(15,507)
Gross unrecognized tax benefits	20,122	(491)	7,632
Intercompany transfers of assets (1)	(13,072)	(219)	(27)
US tax on foreign earnings	7,672	4,325	4,252
Other (1)	195	(4,208)	792
Total	$ 149,260	$ 112,689	$ 118,939