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Derivative Instruments (Effects of Interest Rate Derivatives and Adjustments to LTD on Earnings) (Details) - Designated As Hedging Instrument [Member] - Interest Expense [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jul. 31, 2021 | Aug. 01, 2020 | Jul. 31, 2021 | Aug. 01, 2020
Derivatives, Fair Value [Line Items] |  |  |  |
Gain (Loss) Recognized |  |  |  |
Interest Rate Swap Derivative Instruments [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Gain (Loss) Recognized | 14 | 15 | (12) | 44
Carrying Value Of Long Term Debt [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Gain (Loss) Recognized | $ (14) | $ (15) | $ 12 | $ (44)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 + Details
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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. + Details
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- Details
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- Details
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- Details
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- Details
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