XML 146 R95.htm IDEA: XBRL DOCUMENT v3.3.1.900
INCENTIVE PLANS (Weighted-Average Fair Value And Weighted-Average Assumptions Used In Estimating Fair Value of Grants) (Details) - $ / shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
INCENTIVE PLANS [Abstract]      
Fair value $ 25.17 $ 21.94 $ 16.96
Risk-free interest rate 1.85% 2.40% 1.40%
Dividend yield 1.70% 1.64% 1.72%
Volatility 33.00% 33.00% 33.00%
Expected term 8 years 8 years 8 years