Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Short-term Borrowings and Long-term Debt - Long Term Debt Issued (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020	Sep. 22, 2021	Sep. 17, 2021
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt	$ 6,945	$ 0	$ 5,492
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt	6,945
1.050% Debt, Due 2026 [Member] \| Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Principal Amount					$ 1,250
Interest Rate					1.05%
Proceeds from issuance of long-term debt	1,243
1.500% Debt, Due 2028 [Member] \| Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Principal Amount				$ 1,250
Interest Rate				1.50%
Proceeds from issuance of long-term debt	1,244
1.800% Debt, Due 2031 [Member] \| Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Principal Amount				$ 2,000
Interest Rate				1.80%
Proceeds from issuance of long-term debt	1,981
2.500% Debt, Due 2041 [Member] \| Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Principal Amount				$ 1,000
Interest Rate				2.50%
Proceeds from issuance of long-term debt	994
2.650% Debt, Due 2051 [Member] \| Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Principal Amount				$ 1,500
Interest Rate				2.65%
Proceeds from issuance of long-term debt	$ 1,483