Reconciliation Of Effective Tax Rate - (Details)	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract
Federal Income Tax Rate	35.00%	35.00%	35.00%
State Income Taxes	(0.20%)	3.00%	0.30%
Tax Credits	(4.10%)	(1.80%)	(1.80%)
Tax Exempt Interest	(1.60%)	(0.50%)	(0.50%)
Foreign Rate Differential	(13.40%)	0.00%	0.00%
Uncertain Tax Positions	2.40%	(0.30%)	(0.30%)
Charitable contribution of inventory	(13.10%)	(1.50%)	0.00%
Effects Of Permanent Differences	1.30%	0.50%	0.60%
Other	(2.40%)	(1.80%)	0.60%
Effective Income Tax Rate	3.90%	32.60%	33.90%