CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 1,010,238	$ 637,462	$ 103,711
Other comprehensive income (loss):
Unrealized gain (loss) on available-for-sale marketable securities, net of income tax (expense) benefit of $(1,205), $(15,501), and $9,834 during the fiscal years ended January 31, 2025, 2024 and 2023, respectively	3,927	51,448	(32,483)
Comprehensive income	$ 1,014,165	$ 688,910	$ 71,228