Segment Information - Schedule of Significant Segment Expenses and Other Segment Items (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Segment Reporting Information [Line Items]
Revenue	$ 4,665,433	$ 4,527,224	$ 4,392,960
Stock-based compensation expense	931,309	1,057,161	1,285,752
Provision for income taxes	305,346	194,850	145,565
Net income	1,010,238	637,462	103,711
Operating Segments | Reportable Segment
Segment Reporting Information [Line Items]
Revenue	4,665,433	4,527,224	4,392,960
Adjusted cost of revenue	984,916	908,283	912,913
Adjusted research and development	500,177	430,117	393,548
Adjusted sales and marketing	1,090,294	1,116,356	1,153,660
Adjusted general and administrative	252,152	297,580	353,755
Stock-based compensation expense	931,309	1,057,161	1,285,752
Interest income	(340,474)	(210,009)	(54,103)
Other segment items	(68,525)	95,424	98,159
Provision for income taxes	305,346	194,850	145,565
Net income	1,010,238	637,462	103,711
Eliminations and Reconciling Items
Segment Reporting Information [Line Items]
Net income	$ 0	$ 0	$ 0