CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales (Note 12 and Note 13)	$ 3,627,286	$ 3,150,339	$ 2,545,641
Cost of sales	1,801,916	1,542,788	1,171,551
Gross profit	1,825,370	1,607,551	1,374,090
Selling, general, and administrative expenses	1,172,619	1,042,844	869,885
Income from operations (Note 12)	652,751	564,707	504,205
Interest income	(15,563)	(1,901)	(2,637)
Interest expense	3,442	2,083	6,028
Other income, net	(1,210)	(113)	(700)
Total other (income) expense, net	(13,331)	69	2,691
Income before income taxes	666,082	564,638	501,514
Income tax expense (Note 5)	149,260	112,689	118,939
Net income	516,822	451,949	382,575
Foreign currency translation (loss) gain	(14,080)	(8,212)	8,816
Total other comprehensive (loss) income, net of tax	(14,080)	(8,212)	8,816
Comprehensive income	$ 502,742	$ 443,737	$ 391,391
Net income per share
Basic (in dollars per share)	$ 19.50	$ 16.43	$ 13.64
Diluted (in dollars per share)	$ 19.37	$ 16.26	$ 13.47
Weighted-average common shares outstanding (Note 11)
Basic (in shares)	26,504	27,508	28,055
Diluted (in shares)	26,686	27,789	28,406