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Additional Financial Statement Information Sales Return Allowance (Details) - USD ($) $ in Millions | Feb. 01, 2020 | Feb. 02, 2019
--- | --- | ---
Sales Return Allowance [Line Items] |  |
Right of return asset | $ 36 | $ 38
Customer Refund Liability, Current | $ 74 | $ 78

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- Definition Right of return asset related to the adoption of ASC 606 + References No definition available. + Details
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Namespace Prefix: | gps_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Current regulatory liabilities generally represent obligations to make refunds to customers for various reasons including overpayment. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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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
Name: | us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration