STOCK-BASED COMPENSATION (Details 2) (Stock Options, USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Stock Options
Weighted-average fair values per stock option along with the assumptions incorporated into the valuation models
Period of historical volatility used to estimate expected volatility	10 years
Weighted-average fair value per option (in dollars per share)	$ 6.03
Expected term	5 years
Risk-free interest rate minimum (as a percent)	0.18%
Risk-free interest rate maximum (as a percent)	2.11%
Expected dividend yield (as a percent)	5.33%
Expected volatility (as a percent)	24.00%
Stock Options
Outstanding at the beginning of the period (in shares)	66,852
Granted (in shares)	19,364
Exercised (in shares)	(33,473)
Outstanding at the end of the period (in shares)	52,743
Exercisable (in shares)	15,291
Weighted-Average Exercise Price Per Share
Outstanding at the beginning of the period (in dollars per share)	$ 49.95
Granted (in dollars per share)	$ 56.00
Exercised (in dollars per share)	$ 49.28
Outstanding at the end of the period (in dollars per share)	$ 52.60
Exercisable at the end of the period (in dollars per share)	$ 51.49
Weighted-Average Remaining Contractual Life (in Years)
Outstanding at the end of the period	7 years 2 months
Exercisable at the end of the period	4 years
Aggregate Intrinsic Value (Millions)
Outstanding at the end of the period	$ 0.2
Exercisable at the end of the period	$ 0.1