INCOME TAXES - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Apr. 30, 2025	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Amount
Benefit from income taxes at U.S. federal statutory rate		$ (58,739)	$ (59,137)	$ (69,895)
State taxes, net of federal benefit		(478)	178	150
Change in valuation allowance		65,998	30,584	40,525
Other		168	89	394
Other foreign jurisdictions			30,950	23,179
Cross-border tax laws
Foreign branches subject to U.S. tax		2,941
Foreign tax deduction		(36,987)
Tax credits
Research and development credits		(3,223)	(2,987)	(2,251)
Nontaxable and nondeductible items, net
Stock-based compensation		23,091	6,689	12,367
Intercompany intellectual property sale		4,536
Other		1,346	468	1,390
Change in unrecognized tax benefits		806
Total provision for income taxes	$ 136,000	$ 171,024	$ 6,834	$ 5,859
%
Benefit from income taxes at U.S. federal statutory rate		21.00%
State taxes, net of federal benefit		0.20%
Change in valuation allowance		(23.60%)
Other		(0.10%)
Cross-border tax laws
Foreign branches subject to U.S. tax		(1.10%)
Foreign tax deduction		13.20%
Tax credits
Research and development credits		1.20%
Nontaxable and nondeductible items, net
Stock-based compensation		(8.30%)
Intercompany intellectual property sale		(1.60%)
Other		(0.50%)
Change in unrecognized tax benefits		(0.30%)
Total		(61.10%)
Israel
Amount
ITA tax settlement		$ 180,884
Reversal of deferred tax liability from acquired intangibles		(4,968)
Change in valuation allowance		(19,167)
Reversals of net operating losses in connection with ITA Agreement		15,059
Other		$ (587)
%
ITA tax settlement		(64.70%)
Reversal of deferred tax liability from acquired intangibles		1.80%
Change in valuation allowance		6.90%
Reversals of net operating losses in connection with ITA Agreement		(5.40%)
Other		0.20%
Other foreign jurisdictions
Amount
Other foreign jurisdictions		$ 344
%
Other foreign jurisdictions		(0.10%)