Taxes - Reconciliation of Unrecognized Tax Benefits from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Reconciliation of Unrecognized Tax Benefits
Gross unrecognized tax benefits, beginning of year	$ 3,540	$ 3,307	$ 3,245
Increases related to prior year tax positions	445	336	79
Decreases related to prior year tax positions	(228)	(74)	(248)
Increases related to current year tax positions	93	102	357
Settlements during the period	(77)	(102)	(89)
Lapse in statutes of limitations	(16)	(29)	(37)
Gross unrecognized tax benefits, end of year	$ 3,757	$ 3,540	$ 3,307

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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