Equity - Share-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation, net of amounts capitalized	$ 412,278	$ 363,259	$ 1,195,955	$ 1,051,195
Capitalized stock-based compensation	0	11,940	0	29,081
Total stock-based compensation	412,278	375,199	1,195,955	1,080,276
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation, net of amounts capitalized	35,438	36,358	104,674	103,581
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation, net of amounts capitalized	104,632	86,035	287,401	240,118
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation, net of amounts capitalized	236,895	199,980	694,108	599,569
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation, net of amounts capitalized	$ 35,313	$ 40,886	$ 109,772	$ 107,927