Stock Compensation Plans and Stockholders' Equity - Unrecognized Compensation Costs (Details) $ in Thousands	6 Months Ended
	Jul. 31, 2023 USD ($)
Stock Compensation Plans
Total unrecognized compensation cost	$ 1,125,166
RSUs
Stock Compensation Plans
Total unrecognized compensation cost related to other awards	$ 1,048,459
Weighted-average period over which unrecognized compensation cost is expected to be recognized	2 years 1 month 6 days
PSUs
Stock Compensation Plans
Total unrecognized compensation cost related to other awards	$ 61,557
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 8 months 12 days
RSAs
Stock Compensation Plans
Total unrecognized compensation cost related to other awards	$ 14,516
Weighted-average period over which unrecognized compensation cost is expected to be recognized	2 years 1 month 6 days
Options
Stock Compensation Plans
Total unrecognized compensation cost related to stock options	$ 634
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 3 months 18 days