Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	Jul. 28, 2012	Jan. 28, 2012	Jul. 30, 2011
Property, plant and equipment, accumulated depreciation	$ 709.8	$ 681.0	$ 684.3
Common shares, par value	$ 0.18	$ 0.18	$ 0.18
Common shares, authorized	500	500	500
Common shares, issued	80.9	86.9	86.9
Common shares, outstanding	80.9	86.9	86.9
Treasury shares, shares	6.3	0.3	0