Stock Compensation Plans and Capital Stock Transactions - Performance-based Stock Units (Narrative) (Details) (Performance-Based Stock Units [Member], USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Performance-Based Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of shares vested during the period	$ 4.2	$ 4.5
Weighted average grant date fair value for grants in period	$ 16.51	$ 16.59	$ 15.01
Unrecognized compensation expense	$ 0.1
Period for recognition	1 month 6 days