Net Loss per Share - Narrative (Details) - Class B Common Stock - shares	3 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
Class of Stock [Line Items]
Weighted-average shares used in computing net loss per share attributable to Snowflake Inc. Class A common stockholders - basic (in shares)	0	0
Weighted-average shares used in computing net loss per share attributable to Snowflake Inc. Class A common stockholders - diluted (in shares)	0	0