Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
Income Tax Disclosure [Abstract]
Consolidated effective tax rate	29.60%	33.60%	30.60%	32.30%
Discrete tax benefit	$ 0.9	$ 0.3	$ 2.0	$ 1.1
Discrete tax benefit related to the adoption of ASU 2016-09			$ 1.2
Effective tax rate if discrete tax benefits had not been recognized	31.50%	34.10%	32.70%	33.40%