Net Loss per Share - Schedule of Basic and Diluted Net Loss per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Earnings Per Share [Abstract]
Net loss		$ (797,526)	$ (679,948)	$ (539,102)
Less: net loss attributable to noncontrolling interest		(821)	0	0
Net loss attributable to Snowflake Inc.		$ (796,705)	$ (679,948)	$ (539,102)
Weighted-average shares used in computing net loss per share attributable to Snowflake Inc. Class A and Class B common stockholders—basic (in shares)	[1]	318,730	300,273	141,613
Weighted-average shares used in computing net loss per share attributable to Snowflake Inc. Class A and Class B common stockholders—diluted (in shares)	[1]	318,730	300,273	141,613
Net loss per share attributable to Snowflake Inc. Class A and Class B common stockholders—basic (in dollars per share)	[1]	$ (2.50)	$ (2.26)	$ (3.81)
Net loss per share attributable to Snowflake Inc. Class A and Class B common stockholders—diluted (in dollars per share)	[1]	$ (2.50)	$ (2.26)	$ (3.81)

[1] On March 1, 2021, all shares of the Company’s then-outstanding Class B common stock were automatically converted into the same number of shares of Class A common stock, pursuant to the terms of the Company’s amended and restated certificate of incorporation. No additional shares of Class B common stock will be issued following such conversion. See Note 12 for further details.