Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Feb. 03, 2018	Nov. 03, 2018	Oct. 28, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferral percentage of base salary		50.00%
Percentage component of compensation allowed as deferral under deferred compensation plan		100.00%
Long-lived assets held and used		$ 102.8	$ 115.8
Restricted stock units for non-employee directors
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-employee director RSUs shares payable in cash converted to payable in shares	210,302
Non-employee director RSUs payable in cash converted to payable in common stock	$ 6.3