Employee Incentive Plans and Stockholders’ Equity - Schedule of Stock-based Compensation Expense by Statement of Operations Location (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2026	Jul. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 114	$ 144	$ 231	$ 272
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold \| Subscription
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	15	21	31	38
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold \| Professional services and other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1	2	3	5
Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	30	35	59	64
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	36	51	77	98
Income Statement Location [Axis]: us-gaap:SellingAndMarketingExpense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 32	$ 35	$ 61	$ 67

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details