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Shares remaining available for issuance for the plan.

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Employee Stock Purchase Plan, Minimum Percentage of Common Stock Fair Value Defined to Purchase Shares By Eligible Participants

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Employee Stock Purchase Plan, Number of Exercise Period

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Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Granted Counted Against Shares Authorized Ratio

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Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility, Market Capitalization

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost capitalized for award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Amount of cash paid to settle liability for award under share-based payment arrangement.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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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Number of shares authorized for issuance under share-based payment arrangement.

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Net number of share options (or share units) granted during the period.

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Percentage of vesting of award under share-based payment arrangement.

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Equity Compensation - Narrative (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Jan. 31, 2025 USD ($) period $ / shares shares	Jan. 31, 2024 USD ($) $ / shares shares	Jan. 31, 2023 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Settlement of liability-classified restricted common shares \| $	$ 4	$ 15	$ 11
Market capitalization \| $	2,000
Stock-based compensation \| $	$ 686	703	660
Term of exercise period	6 months
Term of offering period	24 months
Number of securities remaining available for future issuance under equity compensation plans (in shares)	11,000,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	3,000,000
Number of awards granted but unreleased (in shares)	5,000,000
Share based compensation expense, restricted stock units \| $	$ 584	$ 580	$ 510
Total compensation cost related to non-vested awards not yet recognized \| $	$ 795
Total compensation cost related to non-vested awards not yet recognized, weighted average period of recognition	1 year 8 months 15 days
Restricted Stock Units (RSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Restricted Stock Units (RSUs) and Performance Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in dollars per share) \| $ / shares	$ 245.32	$ 200.53	$ 198.89
Fair value of units vested in period \| $	$ 785	$ 580	$ 490
Granted (in shares)	3,229,000
Number of awards granted but unreleased (in shares)	5,188,000	5,371,000
Performance Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Granted (in shares)	279,000
Number of awards granted but unreleased (in shares)	541,000
Share based compensation expense, restricted stock units \| $	$ 57	$ 42	54
Total compensation cost related to non-vested awards not yet recognized \| $	$ 13
Total compensation cost related to non-vested awards not yet recognized, weighted average period of recognition	9 months 29 days
Performance Stock Unit \| Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting percentage (in percentage)	33.33%
Performance Stock Unit \| Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting percentage (in percentage)	33.33%
Performance Stock Unit \| Share-Based Payment Arrangement, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting percentage (in percentage)	33.33%
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation \| $	$ 4	19	32
Equity Incentive Plan 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for issuance (in shares)	23,000,000
Shares granted counted against shares authorized ratio (in shares)	2.08
Shares available for grant at January 31, 2020 (in shares)	8,000,000
Equity Incentive Plan 2022 \| Restricted Stock Units And Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period, net of forfeitures (in shares)	16,000,000
Equity Incentive Plan 2022 \| Restricted Stock Units (RSUs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Equity Incentive Plan 2022 \| Restricted Stock Units (RSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Employee Qualified Stock Purchase Plan 1998 ESP Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of compensation that eligible employees can use to purchase common stock, maximum	15.00%
Percentage of fair market value eligible employees can purchase common stock, minimum	85.00%
Number of exercise period \| period	4
Term of exercise period	6 months
Term of offering period	24 months
Number of securities remaining available for future issuance under equity compensation plans (in shares)	3,000,000
Employee service share based compensation recognized compensation costs on nonvested restricted shares \| $	$ 41	$ 63	$ 62