Segments - Schedule of Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
Revenue from External Customer [Line Items]
Total net revenue	$ 1,633	$ 1,417
Amortization of developed technologies	25	17
Marketing and sales	566	469
Research and development	394	346
General and administrative	162	155
Amortization of purchased intangibles	13	11
Restructuring, other exit costs, and facility reductions	105	0
Stock-based compensation	230	149
Interest and other (income) expense, net	(1)	(10)
Provision for income taxes	82	57
Net income	152	252
Reportable Segment
Revenue from External Customer [Line Items]
Total net revenue	1,633	1,417
Cost of subscription revenue	100	91
Cost of other revenue	20	17
Amortization of developed technologies	25	17
Marketing and sales	398	408
Research and development	305	280
General and administrative	128	133
Amortization of purchased intangibles	13	11
Restructuring, other exit costs, and facility reductions	105	0
New transaction model	76	12
Stock-based compensation	230	149
Interest and other (income) expense, net	(1)	(10)
Provision for income taxes	82	57
Net income	$ 152	$ 252