Intangible Assets Acquired Through Business Combinations and Goodwill - Schedule of Goodwill (Details) $ in Millions	3 Months Ended
Apr. 30, 2026 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 57,941
Acquisition of Qualified	954
Other acquisitions and adjustments	396
Goodwill, ending balance	59,291
Qualified.com, Inc.
Goodwill [Roll Forward]
Goodwill, ending balance	$ 954

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