Income Taxes - Summary of Cash Payments for Income Taxes (Details) $ in Millions	12 Months Ended
Jan. 31, 2026 USD ($)
Effective Income Tax Rate Reconciliation [Line Items]
U.S. federal tax	$ 869
State and local taxes	330
Foreign taxes:
Total income taxes paid	1,471
Canada
Foreign taxes:
Foreign taxes	195
Other foreign jurisdictions
Foreign taxes:
Foreign taxes	$ 77

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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