Income Taxes Items Affecting Statutory Corporate Tax Rate (Details)	12 Months Ended
	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Income Tax Disclosure [Abstract]
Federal statutory rate	33.70%	35.00%	35.00%
State income taxes, net of federal tax benefit	1.00%	2.40%	2.10%
Re-measurement of deferred tax assets and liabilities	(10.90%)
Other federal tax credits	(0.70%)	(0.90%)	(0.80%)
Effective tax rate	23.10%	36.50%	36.30%