Derivative Instruments (Effects of Interest Rate Derivatives and Adjustments to LTD on Earnings) (Details) - Interest Expense [Member] - USD ($) $ in Millions	3 Months Ended
Apr. 30, 2022	May 01, 2021
Interest Rate Swap Derivative Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative, Loss on Derivative	$ (45)	$ (26)
Carrying Value Of Long Term Debt [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain on Derivative	$ 45	$ 26

Amount of increase in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

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- Definition

Amount of decrease in the fair value of derivatives recognized in the income statement.

+ References

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- Definition

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.

+ References

No definition available.

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