Stock Compensation Plans (Details 7)	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
PSUs
Assumptions used to determine the fair value
Dividend yield	0.00%	0.00%	0.00%
PSUs | Minimum
Assumptions used to determine the fair value
Expected volatility	45.40%	46.00%	42.80%
Risk-free rate	1.80%	0.30%	0.20%
Expected term (in years)	2 years 4 months 24 days	2 years 8 months 12 days	3 years 4 months 24 days
PSUs | Maximum
Assumptions used to determine the fair value
Expected volatility	48.10%	47.50%	43.90%
Risk-free rate	3.90%	0.40%	0.60%
Expected term (in years)	3 years	3 years	4 years
Options
Assumptions used to determine the fair value
Dividend yield		0.00%	0.00%
Options | Minimum
Assumptions used to determine the fair value
Expected volatility		43.10%	43.80%
Risk-free rate		0.30%	0.40%
Expected term (in years)		3 years 2 months 12 days	4 years 8 months 12 days
Options | Maximum
Assumptions used to determine the fair value
Expected volatility		45.70%	44.10%
Risk-free rate		1.00%	0.50%
Expected term (in years)		5 years 8 months 12 days	5 years 6 months
ESPP
Assumptions used to determine the fair value
Dividend yield	0.00%	0.00%	0.00%
ESPP | Minimum
Assumptions used to determine the fair value
Expected volatility	54.00%	40.60%	53.20%
Risk-free rate	2.30%	0.10%	0.10%
Expected term (in years)	6 months	6 months	6 months
ESPP | Maximum
Assumptions used to determine the fair value
Expected volatility	65.90%	47.40%	70.20%
Risk-free rate	4.70%	0.30%	0.20%
Expected term (in years)	2 years	1 year	1 year