Stock-Based Compensation (Weighted Average Assumptions Relating To The Valuation Of Stock Options) (Details) (USD $)	3 Months Ended	6 Months Ended
Jul. 30, 2011	Jul. 31, 2010	Jul. 30, 2011	Jul. 31, 2010
Stock-Based Compensation
Weighted average fair value of grants	$ 6.66	$ 5.91	$ 6.70	$ 6.89
Expected volatility	64.00%	66.00%	66.00%	66.00%
Expected term (years)	4.5	4.5	4.5	4.5
Risk-free interest rate	1.60%	1.80%	1.90%	2.10%
Expected dividend yield	1.40%	1.30%	1.50%	1.00%

The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.

+ References+ Details

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References+ Details