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Income Taxes - Additional Information (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
May 02, 2015
Income Tax Disclosure [Abstract]  
Decrease In Gross Unrecognized Tax Benefits Within The Next 12 Months $ 5gps_DecreaseInGrossUnrecognizedTaxBenefitsWithinNext12Months
Benefit To Income Taxes If Decrease In Gross Unrecognized Tax Benefits Within 12 Months Are Recognized 0gps_BenefitToIncomeTaxesIfDecreaseInGrossUnrecognizedTaxBenefitsWithin12MonthsAreRecognized
Interest Expense Reversed 14gps_InterestExpenseReversed
Other Tax Expense (Benefit) $ 31us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities