COMMON EQUITY (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of shares outstanding
Common stock, shares issued	79,919,176	78,287,906	78,287,906	77,781,685
Deferred compensation rabbi trust (in shares)	473,796	385,439
Average cost of shares in the rabbi trust (in dollars per share)	$ 48.50	$ 46.03
Total common shares outstanding	79,445,380	77,902,467