STOCK OWNERSHIP AND COMPENSATION PLANS (Weighted Average Assumptions Used in Valuing Options Granted) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, fair value assumptions, method used	The fair value of each stock option award granted was estimated on the date of grant using a lattice-based option-valuation model. The expected volatility under the lattice-based option-valuation model was based on the current and the historical implied volatilities from traded options of the Company's common stock. The dividend yield was based on the approved annual dividend rate in effect and current market price of the underlying common stock at the time of grant. The risk-free interest rate of each stock option granted was based on the U.S. Treasury yield curve in effect at the time of grant for bonds with maturities ranging from one month to 10 years. The expected holding period of the options granted was estimated using the historical exercise behavior of employees. The weighted average assumptions used in valuing options granted in the periods presented are:
Bond maturity range, lower range limit	1 month
Bond maturity range, upper range limit	10 years
Weighted average fair value of options at grant date	$ 15.87	$ 18.08	$ 17.60
Expected volatility	27.00%	27.20%	26.80%
Dividend yield	0.90%	0.80%	0.70%
Risk-free interest rate minimum	1.30%	2.70%	2.80%
Risk-free interest rate maximum	1.50%	3.10%	3.20%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected holding period, in years	6 years 8 months 12 days	6 years 9 months 18 days	6 years 8 months 12 days
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected holding period, in years	7 years 6 months	7 years 7 months 6 days	7 years 7 months 6 days