Stock-Based Compensation (Weighted Average Assumptions Relating To The Valuation Of Stock Options) (Details) (USD $)	3 Months Ended	9 Months Ended
Oct. 29, 2011 Y	Oct. 29, 2011 Y
Stock-Based Compensation [Abstract]
Weighted average fair value of grants	$ 5.68	$ 6.61
Expected volatility	65.00%	66.00%
Expected term (years)	4.5	4.5
Risk-free interest rate	0.80%	1.80%
Expected dividend yield	1.60%	1.50%

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.

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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.

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