Equity Compensation - Schedule of ESPP Activity (Details) - ESPP - 1998 Employee Qualified Stock Purchase Plan - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issued shares (in shares)	280	299	623	732
Average price of issued shares (in usd per share)	$ 220.90	$ 167.45	$ 219.42	$ 165.89
Weighted average grant date fair value of shares granted under the ESPP (in usd per share)	$ 90.23	$ 78.92	$ 85.48	$ 78.93