Employee Stock Ownership Plan (ESOP), Compensation Expense, Differences

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Employee Stock Purchase Plan, Maximum Percentage of Compensation to Purchase Shares by Eligible Participants

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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 Periods

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Employee Stock Purchase Plan, Term of Exercise Period

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Employee Stock Purchase Plan, Term of Offering Period

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- Definition

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

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- Definition

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

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The amount of plan compensation cost recognized during the period.

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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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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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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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- Definition

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

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Equity Compensation - Narrative (Details)	3 Months Ended				6 Months Ended		12 Months Ended
Equity Compensation - Narrative (Details)	Jul. 31, 2026 USD ($) shares	Apr. 30, 2026 USD ($)	Jul. 31, 2025 USD ($) shares	Apr. 30, 2025 USD ($)	Jul. 31, 2026 USD ($) period shares	Jul. 31, 2025 USD ($)	Jan. 31, 2026 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market capitalization					$ 2,000,000,000.0
Expected dividends					0.00%
1998 Employee Qualified Stock Purchase 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
Compensation expense						$ 54,000,000
Compensation expense, differences		$ 0	$ 0	$ 0	$ 0	0	$ 0
Restricted Stock Units (RSUs) and Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vested in period, fair value					$ 453,000,000	580,000,000
Awards granted in period (in shares) \| shares					2,996,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted in period (in shares) \| shares					3,000,000
Share based compensation expense	$ 149,000,000		$ 158,000,000		$ 276,000,000	298,000,000
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted in period (in shares) \| shares	0		0		350,000
Share based compensation expense	$ 16,000,000		$ 18,000,000		$ 31,000,000	$ 39,000,000
Award vesting period					3 years
Expected dividends					0.00%	0.00%
Performance Stock Units \| 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 Units \| 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 Units \| Share-based Compensation Award, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting percentage (in percentage)					33.33%