Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Billions	Apr. 30, 2026	Jan. 31, 2026	Apr. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Outstanding payment obligation	$ 5.9	$ 6.0	$ 5.6

Amount of obligation for supplier finance program.

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-Topic 405
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant