CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Income Statement [Abstract]
Net sales (Note 2 and Note 10)	$ 1,957,549	$ 1,827,165	$ 4,352,927	$ 3,963,832
Cost of sales	786,189	724,542	1,839,839	1,657,937
Gross profit	1,171,360	1,102,623	2,513,088	2,305,895
Selling, general, and administrative expenses (Note 10)	556,994	535,349	1,406,914	1,300,728
Income from operations (Note 10)	614,366	567,274	1,106,174	1,005,167
Interest income	(13,523)	(15,978)	(47,275)	(48,027)
Interest expense	1,069	610	2,525	2,792
Other income, net	(93)	(1,300)	(1,411)	(1,605)
Total other income, net	(12,547)	(16,668)	(46,161)	(46,840)
Income before income taxes	626,913	583,942	1,152,335	1,052,007
Income tax expense (Note 4)	145,768	127,208	263,835	237,327
Net income	481,145	456,734	888,500	814,680
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on cash flow hedges	4,517	6,021	(5,564)	2,555
Foreign currency translation (loss) gain	(1,474)	(17,707)	9,150	(7,266)
Total other comprehensive income (loss), net of tax	3,043	(11,686)	3,586	(4,711)
Comprehensive income	$ 484,188	$ 445,048	$ 892,086	$ 809,969
Net income per share
Basic (in dollars per share)	$ 3.34	$ 3.01	$ 6.05	$ 5.35
Diluted (in dollars per share)	$ 3.33	$ 3.00	$ 6.04	$ 5.33
Weighted-average common shares outstanding (Note 9)
Basic (in shares)	144,076	151,820	146,929	152,307
Diluted (in shares)	144,289	152,386	147,202	152,924