Fair Value Measurements - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended
Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019	Feb. 01, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges	$ 0	$ 0
Other Asset Impairment Charges			$ 127,000,000	$ 9,000,000
Other indefinite-lived intangible assets impairment charges	0	0	0	0
Transfers into or out of level 2	0	0	0	0
Fair Value Asset Level 3 Transfer Amount	0	0	0	0
Transfers into or out of level 1	0	0	0	0
Purchases, sales, issuances, or settlements related to recurring level 3 measurements	0	0	0	0
Available-for-sale Securities, Current	178,000,000	294,000,000	178,000,000	294,000,000	$ 290,000,000
Cash and Cash Equivalents, Fair Value Disclosure	222,000,000	17,000,000	222,000,000	17,000,000
Debt Securities, Available-for-sale, Unrealized Gain (Loss)	0	0	0	0
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale	$ 0	$ 0	$ 0	$ 0

Cash and Equivalents portion of Available for Sale Securities

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- Definition

Fair Value Asset, transfer into and out of Level 3 Transfer

+ References

No definition available.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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- Definition

Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

+ References

No definition available.

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- Definition

Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

No definition available.

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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 transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

+ References

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-Publisher FASB
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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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- Definition

Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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- Definition

The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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- Definition

Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings and other comprehensive loss (OCI).

+ References

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