Stock-Based Compensation (Fair Value Of Option Award) (Details) (USD $)	3 Months Ended
Apr. 28, 2012	Apr. 30, 2011
Stock-Based Compensation [Abstract]
Dividend yield	2.60%	1.80%
Volatility	33.70%	33.10%
Risk-free interest rate	1.10%	2.20%
Expected life in years	5.4	5.4
Weighted average fair value at grant date	$ 11.80	$ 14.81

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