CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Income Statement [Abstract]
Revenue	$ 1,229,835	$ 1,177,541	$ 3,621,777	$ 3,481,295
Cost of revenue	271,770	283,881	823,337	842,272
Gross profit	958,065	893,660	2,798,440	2,639,023
Operating expenses:
Research and development	210,097	222,980	621,960	635,294
Sales and marketing	342,814	361,703	1,028,779	1,068,481
General and administrative	94,740	126,137	273,960	347,016
Total operating expenses	647,651	710,820	1,924,699	2,050,791
Income from operations	310,414	182,840	873,741	588,232
Gains on strategic investments, net	406,060	6,324	437,497	26,785
Other income, net	78,235	91,248	247,398	250,248
Income before provision for income taxes	794,709	280,412	1,558,636	865,265
Provision for income taxes	181,836	73,362	332,568	222,892
Net income	$ 612,873	$ 207,050	$ 1,226,068	$ 642,373
Net income per share:
Basic (in dollars per share)	$ 2.05	$ 0.67	$ 4.06	$ 2.08
Diluted (in dollars per share)	$ 2.01	$ 0.66	$ 3.97	$ 2.04
Weighted-average shares used in computing net income per share:
Basic (in shares)	298,660,092	307,529,696	301,807,298	308,443,893
Diluted (in shares)	305,024,411	314,191,269	308,702,227	314,514,244