Equity - Share-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation, net of amounts capitalized	$ 144,387	$ 119,141	$ 459,392	$ 157,790
Capitalized stock-based compensation	6,085	284	19,322	1,020
Total stock-based compensation	150,472	119,425	478,714	158,810
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation, net of amounts capitalized	21,163	13,226	66,380	15,507
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation, net of amounts capitalized	43,074	39,481	141,463	49,714
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation, net of amounts capitalized	56,142	39,368	174,788	49,186
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation, net of amounts capitalized	$ 24,008	$ 27,066	$ 76,761	$ 43,383

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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