Share-Based Compensation Plans (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Share-Based Compensation Plans
Share-based compensation expense	$ 4.6	$ 4.2	$ 9.1	$ 8.3
Non-Vested Deferred Stock Units and Restricted Stock Shares
Unrecognized compensation cost
Unrecognized compensation cost	$ 18.0		$ 18.0
Compensation recognition period			1 year 4 months 24 days
Deferred Stock Units | Minimum
Weighted-Average Grant-Date Fair Value
Vesting period			1 year
Deferred Stock Units | Maximum
Weighted-Average Grant-Date Fair Value
Vesting period			3 years
Deferred Stock Units | Time-Based
Shares
Balance at the beginning of the period (in shares)			471,369
Granted (in shares)			449,595
Vested (in shares)			(325,763)
Forfeited (in shares)			(22,778)
Balance at the end of the period (in shares)	572,423		572,423
Weighted-Average Grant-Date Fair Value
Balance at the beginning of the period (in dollars per share)			$ 36.22
Granted (in dollars per share)			$ 33.09
Vested (in dollars per share)			$ 38.19
Forfeited (in dollars per share)			$ 32.39
Balance at the end of the period (in dollars per share)	$ 32.80		$ 32.80
Shares relinquished for tax withholding			110,740
Deferred Stock Units | Time-Based | Awards granted prior to April 3, 2013
Shares
Balance at the end of the period (in shares)	142,762		142,762
Deferred Stock Units | Performance-Based
Shares
Granted (in shares)			97,668
Forfeited (in shares)			(15,110)
Balance at the end of the period (in shares)	82,558		82,558
Weighted-Average Grant-Date Fair Value
Granted (in dollars per share)			$ 33.09
Forfeited (in dollars per share)			$ 33.09
Balance at the end of the period (in dollars per share)	$ 33.09		$ 33.09
Vesting period			3 years
Number of shares of common stock received for each performance share			1
Vesting percentage of awards in tranches			33.00%
Restricted Stock
Shares
Balance at the beginning of the period (in shares)			99,847
Granted (in shares)			11,971
Vested (in shares)			(32,695)
Balance at the end of the period (in shares)	79,123		79,123
Weighted-Average Grant-Date Fair Value
Balance at the beginning of the period (in dollars per share)			$ 28.55
Granted (in dollars per share)			$ 37.59
Vested (in dollars per share)			$ 29.44
Balance at the end of the period (in dollars per share)	$ 29.54		$ 29.54