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Schedule of Amortization Expense for Finite-Lived Intangible Assets (Detail) (USD $)
In Millions, unless otherwise specified
Jan. 30, 2015
Jan. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]    
2016 $ 8us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths  
2017 7us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo  
2018 5us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree  
2019 3us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour  
2020 1us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive  
2021 and thereafter 0us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive  
Net carrying value $ 24us-gaap_FiniteLivedIntangibleAssetsNet $ 79us-gaap_FiniteLivedIntangibleAssetsNet