Short-term Borrowings and Long-term Debt (Significant Debt Repayments) (Details) - Unsecured Debt € in Millions, $ in Millions	6 Months Ended
Jul. 31, 2026 USD ($)	Jul. 31, 2026 EUR (€)
Debt Instrument [Line Items]
Significant repayments of long term debt	$ 2,303
2.550% Debt Due April 2026
Debt Instrument [Line Items]
Principal Amount \| €		€ 650
Interest Rate	2.55%	2.55%
Significant repayments of long term debt	$ 754
4.000% Debt Due April 2026
Debt Instrument [Line Items]
Principal Amount	$ 750
Interest Rate	4.00%	4.00%
Significant repayments of long term debt	$ 750
3.050% Debt Due July 2026
Debt Instrument [Line Items]
Principal Amount	$ 799
Interest Rate	3.05%	3.05%
Significant repayments of long term debt	$ 799

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