Condensed Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2026	Jul. 31, 2025
Total share-based compensation expense	$ 462	$ 391	$ 871	$ 851
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense
Total share-based compensation expense	78	70	151	140
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense
Total share-based compensation expense	217	170	401	353
Location, Statement of Income, Balance [Axis]: us-gaap:RestructuringCharges
Total share-based compensation expense	0	0	0	42
Location, Statement of Income, Balance [Axis]: us-gaap:SellingAndMarketingExpense
Total share-based compensation expense	93	84	183	177
Subscription services \| Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold
Total share-based compensation expense	44	39	80	81
Costs of professional services \| Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold
Total share-based compensation expense	$ 30	$ 28	$ 56	$ 58