Derivative Instruments - Effects of Derivative Instruments on Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 30, 2022	Apr. 30, 2021
Derivatives, Fair Value [Line Items]
Total net revenue	$ 1,170	$ 989
Selling and Marketing Expense	419	377
Research and Development Expense	289	266
General and Administrative Expense	120	112
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	2	(4)
Foreign Exchange Contract \| Designated as Hedging Instrument \| Subscription revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	6	(5)
Foreign Exchange Contract \| Designated as Hedging Instrument \| Maintenance revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	0	0
Foreign Exchange Contract \| Designated as Hedging Instrument \| Cost of subscription and maintenance revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	(1)	0
Foreign Exchange Contract \| Designated as Hedging Instrument \| Marketing and sales
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	(2)	1
Foreign Exchange Contract \| Designated as Hedging Instrument \| Research and development
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	0	0
Foreign Exchange Contract \| Designated as Hedging Instrument \| General and administrative
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	(1)	0
Subscription revenue
Derivatives, Fair Value [Line Items]
Total net revenue	1,089	927
Maintenance revenue
Derivatives, Fair Value [Line Items]
Total net revenue	18	19
Cost of subscription and maintenance revenue
Derivatives, Fair Value [Line Items]
Total net revenue	1,107	946
Cost of goods and services sold	$ 84	$ 68

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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