Segments - Schedule of Segments (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jul. 31, 2025	Apr. 30, 2025	Jul. 31, 2024	Apr. 30, 2024	Jul. 31, 2025	Jul. 31, 2024
Revenue from External Customer [Line Items]
Total net revenue	$ 1,763		$ 1,505		$ 3,396	$ 2,922
Amortization of developed technologies	23		22		48	39
Marketing and sales	559		480		1,125	949
Research and development	413		368		807	714
General and administrative	168		161		330	316
Amortization of purchased intangibles	14		13		27	24
Restructuring, other exit costs, and facility reductions	6		0		111	0
Stock-based compensation	191		170		421	319
Interest and other (income) expense, net	(12)		(9)		(13)	(19)
Provision for income taxes	143		70		225	127
Net income	313	$ 152	282	$ 252	465	534
Reportable Segment
Revenue from External Customer [Line Items]
Total net revenue	1,763		1,505		3,396	2,922
Cost of subscription revenue	103		91		203	182
Cost of other revenue	18		15		38	32
Amortization of developed technologies	23		22		48	39
Marketing and sales	396		405		794	813
Research and development	329		292		634	572
General and administrative	136		134		264	267
Amortization of purchased intangibles	14		13		27	24
Restructuring, other exit costs, and facility reductions	6		0		111	0
New transaction model	103		20		179	32
Stock-based compensation	191		170		421	319
Interest and other (income) expense, net	(12)		(9)		(13)	(19)
Provision for income taxes	143		70		225	127
Net income	$ 313		$ 282		$ 465	$ 534