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Income Taxes - Additional Information (Details)
$ in Millions
 6 Months Ended
Aug. 01, 2015
USD ($)
Income Tax Disclosure [Abstract]  
Decrease In Gross Unrecognized Tax Benefits Within The Next 12 Months $ 5
Benefit To Income Taxes If Decrease In Gross Unrecognized Tax Benefits Within 12 Months Are Recognized 0
Interest Expense Reversed 15
Other Tax Expense (Benefit) $ 31