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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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- Definition

[Line Items] for Schedule of Fiscal 2020 Debt Maturities [Table]

+ References

No definition available.

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Short-term Borrowings and Long-term Debt Schedule of Fiscal Year 2020 Debt Maturities (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 20, 2019	Feb. 01, 2019
Schedule of Fiscal 2020 Debt Maturities [Line Items]
Repayments of Long-term Debt	$ 1,907	$ 3,050
4.125% Fixed Rate Debt (500 USD), Due 2019 [Member] \| Unsecured Debt [Member]
Schedule of Fiscal 2020 Debt Maturities [Line Items]
Debt Instrument, Face Amount				$ 500
Debt Instrument, Interest Rate, Stated Percentage				4.125%
Repayments of Long-term Debt	364
2.281% Floating Rate Debt (300 USD), Due 2019 [Member] \| Unsecured Debt [Member]
Schedule of Fiscal 2020 Debt Maturities [Line Items]
Debt Instrument, Face Amount			$ 300
Debt Instrument, Interest Rate, Stated Percentage			2.281%
Repayments of Long-term Debt	300
1.750% Fixed Rate Debt (1,200 USD), Due 2019 [Member] \| Unsecured Debt [Member]
Schedule of Fiscal 2020 Debt Maturities [Line Items]
Debt Instrument, Face Amount			$ 1,200
Debt Instrument, Interest Rate, Stated Percentage			1.75%
Repayments of Long-term Debt	1,200
Various Debt Repayments [Member] \| Unsecured Debt [Member]
Schedule of Fiscal 2020 Debt Maturities [Line Items]
Debt Instrument, Face Amount	43
Repayments of Long-term Debt	$ 43