CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Net sales (Note 2 and Note 10)	$ 1,430,840	$ 1,311,320	$ 2,395,378	$ 2,136,667
Cost of sales	627,018	578,048	1,053,650	933,395
Gross profit	803,822	733,272	1,341,728	1,203,272
Selling, general, and administrative expenses (Note 10)	477,301	428,186	849,920	765,379
Income from operations (Note 10)	326,521	305,086	491,808	437,893
Interest income	(15,056)	(14,797)	(33,752)	(32,049)
Interest expense	521	1,151	1,456	2,182
Other income, net	(1,300)	(180)	(1,318)	(305)
Total other income, net	(15,835)	(13,826)	(33,614)	(30,172)
Income before income taxes	342,356	318,912	525,422	468,065
Income tax expense (Note 4)	74,204	76,591	118,067	110,119
Net income	268,152	242,321	407,355	357,946
Other comprehensive income, net of tax
Unrealized gain (loss) on cash flow hedges	10,128	(4,322)	(10,081)	(3,466)
Foreign currency translation (loss) gain	(1,150)	15,097	10,624	10,441
Total other comprehensive income, net of tax	8,978	10,775	543	6,975
Comprehensive income	$ 277,130	$ 253,096	$ 407,898	$ 364,921
Earnings Per Share [Abstract]
Basic (in dollars per share)	$ 1.82	$ 1.59	$ 2.75	$ 2.35
Diluted (in dollars per share)	$ 1.82	$ 1.59	$ 2.74	$ 2.34
Weighted-average common shares outstanding (Note 9)
Basic (in shares)	147,395	152,240	148,364	152,552
Diluted (in shares)	147,652	152,778	148,638	153,127