Stockholders' Equity - Summary of Repurchases Under Share Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
Jul. 31, 2026	Apr. 30, 2026	Jul. 31, 2025	Apr. 30, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock repurchased		$ 27,366	$ 2,209	$ 2,692
Share Repurchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock repurchased (in shares)	0	11	8	10
Average price per share (in dollars per share)	$ 0	$ 192.00	$ 269.96	$ 273.42
Common stock repurchased	$ 0	$ 2,145	$ 2,199	$ 2,681

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

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

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+ Details

- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

+ References + Details