Other Charges (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jul. 29, 2017	Apr. 29, 2017	Jul. 30, 2016	Feb. 03, 2018
Restructuring Cost and Reserve [Line Items]
Severance charges	$ 1.2	$ 1.3	$ 0.9
Severance charges, net of tax benefit	0.7	$ 0.8	$ 0.6
Other selling, general and administrative expense	3.8
Other selling, general and administrative expense, net of tax benefit	2.4
Strategic consulting charges	2.3
Strategic consulting charges, net of tax benefit	1.5
Lease termination charge	0.3
Lease termination charge, net of tax benefit	0.2
Vision 20/20
Restructuring Cost and Reserve [Line Items]
Strategic consulting charges	$ 2.3
Strategic plan refining period	3 years
Minimum | Scenario, Forecast | Vision 20/20
Restructuring Cost and Reserve [Line Items]
Restructuring costs				$ 12.5
Restructuring non-cash charges				7.5
Restructuring cash charges				5.0
Maximum | Scenario, Forecast | Vision 20/20
Restructuring Cost and Reserve [Line Items]
Restructuring costs				15.5
Restructuring non-cash charges				9.5
Restructuring cash charges				$ 6.0