Balance Sheet Components - Schedule of Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025
Goodwill [Roll Forward]
Goodwill, beginning of the year	$ 4,242	$ 3,653
Additions arising from acquisitions during the year	0	619
Effect of foreign currency translation and measurement period adjustments	53	(30)
Goodwill, end of the year	4,295	4,242
Accumulated impairment loss	$ (149)	$ (149)