Income Taxes (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended
	Apr. 30, 2012	Apr. 28, 2012	Apr. 30, 2011	Jan. 28, 2012
Income Taxes
Effective income tax rates (as a percent)		32.00%	29.50%
Number of Italian subsidiaries whose audit is pending under an informal status update from the Italian tax authority	$ 1
Number of periods an initial formal claim from the tax authority is expected (in years)	$ 2
Amount likely to be received as an initial formal claim from the tax authority	$ 11
Aggregate accruals for uncertain tax positions, including penalties and interest and net of federal tax benefits		$ 16.8		$ 16.7