Net Loss per Share Attributable to Common Stockholders - Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Apr. 30, 2025	Apr. 30, 2024
Numerator:
Net loss attributable to common stockholders	$ (26.1)	$ (22.0)
Denominator:
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	3,967,101	3,646,202
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	3,967,101	3,646,202
Net loss per share attributable to common stockholders, basic (usd per share)	$ (6.58)	$ (6.03)
Net loss per share attributable to common stockholders, diluted (usd per share)	$ (6.58)	$ (6.03)

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details