Derivative Instruments - Schedule of Cash Flow Hedges on the Consolidated Statements of Operations (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Revenues	$ 9,552	$ 8,446	$ 7,259
Costs and expenses	8,831	8,031	7,076
Provision for (benefit from) income taxes	316	112	(1,025)
Revenues
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) related to cash flow hedges	18	30	62
Costs and expenses
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) related to cash flow hedges	$ 7	$ (3)	$ 1

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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+ Details

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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