SHARE-BASED COMPENSATION (Assumptions Used to Determine Compensation Cost for Market Condition Component of Performance Share Program Plan) (Details)	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility, lower limit	25.30%	25.25%
Expected volatility, upper limit	55.33%	62.58%
Risk-free interest rate, lower limit	0.13%	0.20%
Risk-free interest rate, upper limit	0.78%	0.99%

The estimated measure of the maximum 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.

No definition available.

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