Goodwill - Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2023	Jan. 31, 2023
Goodwill [Roll Forward]
Goodwill gross, beginning of the period		$ 3,774
Less: accumulated impairment losses, beginning of the period	$ (149)
Goodwill net, beginning of the period	3,625
Additions arising from acquisitions during the period	3
Effect of foreign currency translation	(4)
Goodwill net, end of the period	$ 3,624