STOCK-BASED COMPENSATION (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assumptions used in the model for SARs granted
Expenses recorded for stock-based compensation plans	$ 10,300,000	$ 10,200,000	$ 10,200,000
SARs
Grant date fair values
Awards issued			344,400
Fair values of awards at grant date			3,300,000
Vesting period	5 years
Assumptions used in the model for SARs granted
Expected volatility (as a percent)			69.40%
Expected risk-free interest rate (as a percent)			2.60%
Expected dividend rate (as a percent)			2.40%
Expected forfeiture rate (as a percent)			0.00%
Restricted stock units
Grant date fair values
Awards issued	190,800	175,500
Fair values of awards at grant date	$ 5,400,000	$ 5,000,000
Vesting percentage	50.00%
Restricted stock units | Vesting after three years from grant date
Grant date fair values
Vesting period	3 years
Restricted stock units | Vesting after four years from grant date
Grant date fair values
Vesting period	4 years