Revenue, Deferred Revenue and Remaining Performance Obligations - Schedule of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2026	Apr. 30, 2025
Movement in Deferred Revenue [Roll Forward]
Beginning balance	$ 4,753,438	$ 3,728,677
Additions to deferred revenue	1,354,384	1,146,152
Recognition of deferred revenue	(1,385,629)	(1,103,434)
Ending balance	$ 4,722,193	$ 3,771,395

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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