Debt And Credit Facilities (Narrative) (Details) $ in Millions	3 Months Ended
Apr. 30, 2022 USD ($) covenant numberOfRatingsAgencies numberOfPeriods	May 01, 2021 USD ($)
Debt Instrument [Line Items]
Proceeds from long-term borrowings	$ 0	$ 675
Principal payments on long-term borrowings	0	600
Interest expense, net	$ 35	137
Number of specified ratings agencies \| numberOfRatingsAgencies	3
Number of financial covenant tests \| covenant	2
Number of options to extend revolver	2
Commercial paper [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 800
Issuances or borrowings	$ 0
Minimum [Member]
Debt Instrument [Line Items]
Number of specified ratings agencies \| numberOfRatingsAgencies	2
Lower limit on dividends and share repurchases [Member]
Debt Instrument [Line Items]
Limit on dividends and share repurchases	$ 60
Middle range of Leverage Ratio limits on dividends and share repurchases [Member]
Debt Instrument [Line Items]
Limit on dividends and share repurchases	$ 100
Senior notes, 2.30%, due April 2024 [Member]
Debt Instrument [Line Items]
Proceeds from long-term borrowings		250
Debt instrument interest rate	2.30%
Senior notes, 4.25%, due August 2031 [Member]
Debt Instrument [Line Items]
Proceeds from long-term borrowings		425
Debt instrument interest rate	4.25%
Secured Notes, 8.75%, due May 2025 [Member]
Debt Instrument [Line Items]
Principal payments on long-term borrowings		600
2021 Refinancing
Debt Instrument [Line Items]
Interest expense, net		88
One-time "make-whole" payment		$ 78
Revolver [Member]
Debt Instrument [Line Items]
Current borrowing capacity	$ 800
Debt covenant leverage ratio	4
Fixed charge coverage ratio	1.25
Option to increase the maximum capacity of revolving credit facility	$ 200
Maximum borrowing capacity	1,000
Issuances or borrowings	$ 0
Revolver [Member] \| Lower limit of agencies providing investment grade rating [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Number of specified ratings agencies \| numberOfRatingsAgencies	1
Number of consecutive fiscal quarters meeting leverage ratio threshold \| numberOfPeriods	2
Debt covenant leverage ratio	2.5
Revolver [Member] \| Maximum leverage ratio for unlimited dividends and share repurchases [Member]
Debt Instrument [Line Items]
Debt covenant leverage ratio	3
Revolver [Member] \| Upper limit of Leverage Ratio
Debt Instrument [Line Items]
Debt covenant leverage ratio	3.5

Debt Instrument, Debt Covenant Fixed Charge Coverage Ratio

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- Definition

Debt Instrument, Debt Covenant Leverage Ratio

+ References

No definition available.

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- Definition

Limit on dividends and share repurchases when certain leverage ratio thresholds are met

+ References

No definition available.

+ Details

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- Definition

Number of consecutive fiscal quarters with a leverage ratio of less than 2.5 times required while having only one investment grade rating in order for our revolver not to be secured.

+ References

No definition available.

+ Details

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- Definition

Number of financial covenant tests under our Revolver

+ References

No definition available.

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- Definition

Number of specified ratings agencies our revolver agreement requires to have an unsecured investment-grade debt rating from in order for our revolver not to be secured.

+ References

No definition available.

+ Details

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- Definition

Number of options to extend the revolving commitment by one year provided we obtain written consent from the lenders.

+ References

No definition available.

+ Details

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- Definition

The maximum amount by which the entity may choose to increase the maximum capacity of a credit facility.

+ References

No definition available.

+ Details

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- Definition

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

+ 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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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash paid for interest capitalized, classified as investing activity.

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Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

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

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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.

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