Basis of Presentation (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net revenue	$ 1,170	$ 989
Subscription
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net revenue	1,089	927
Other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net revenue	$ 63	43
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net revenue		989
Previously Reported | Subscription
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net revenue		948
Previously Reported | Other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net revenue		22
Effect of Change in Presentation
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net revenue		0
Effect of Change in Presentation | Subscription
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net revenue		(21)
Effect of Change in Presentation | Other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net revenue		$ 21