Deferred Commissions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Revenue from Contract with Customer [Abstract]
Sales commissions capitalized as contract costs	$ 37	$ 33	$ 102	$ 82
Amortization of contract costs	$ 27	$ 21	$ 76	$ 61