Stock Based Compensation (Fair Value of Stock-Options Granted And Weighted Average Assumptions to Calculate Fair Value) (Details) (USD $)	12 Months Ended
Jan. 28, 2012 Y	Jan. 29, 2011 Y	Jan. 30, 2010 Y
Share-based Compensation [Abstract]
Weighted average grant date fair value of stock options granted during the period	$ 7.12	$ 7.34	$ 2.51
Dividend yield	2.30%	1.00%	2.30%
Expected volatility	38.80%	37.60%	36.40%
Risk-free interest rate	2.00%	2.70%	1.90%
Expected life	5.6	5.5	5.4

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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