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Additional Acquisition (Details) $ in Millions	Mar. 04, 2019 USD ($)
Business Combinations [Abstract]
Consideration Paid for Acquisition	$ 69

X

- Definition

Amount of consideration for business acquisition

+ References

No definition available.

+ Details

Name:	gps_ConsiderationPaidforAcquisition
Namespace Prefix:	gps_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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