Balance Sheet Components - Schedule of Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 30, 2026	Jan. 31, 2026
Goodwill [Roll Forward]
Goodwill, beginning of the year	$ 4,295
Additions arising from acquisitions during the year	46
Effect of foreign currency translation	(4)
Goodwill, end of the year	4,337
Accumulated impairment loss	$ (149)	$ (149)

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details