Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Income Tax Disclosure [Abstract]
Decrease In Gross Unrecognized Tax Benefits Within The Next 12 Months	$ 2		$ 2
Benefit To Income Taxes If Decrease In Gross Unrecognized Tax Benefits Within 12 Months Are Recognized			$ 0
Effective Income Tax Rate Reconciliation, Percent	45.20%	37.40%	45.60%	37.60%