STOCK-BASED COMPENSATION (Details 2) (Stock Options, USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Stock Options
Assumptions Incorporated into Valuation Models and Weighted Average Grant Date Fair Value
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 (in shares)
Outstanding, at the beginning of the period (in shares)	2,046,355
Granted, (in shares)	319,234
Exercised (in shares)	(793,455)
Forfeited (in shares)	(15,510)
Outstanding, at the end of the period (in shares)	1,556,624
Exercisable (in shares)	816,336
Weighted-Average Exercise Price (in dollars per share)
Outstanding at the beginning of the period (in dollars per share)	$ 49.25
Granted (in dollars per share)	$ 56.00
Exercised (in dollars per share)	$ 48.58
Forfeited (in dollars per share)	$ 56.00
Outstanding at the end of the period (in dollars per share)	$ 50.91
Exercisable at the end of the period (in dollars per share)	$ 49.92
Weighted-Average Remaining Contractual Life (in Years)
Outstanding at the end of the period	6 years 6 months
Exercisable at the end of period	4 years 9 months
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)	$ 8.2
Exercisable (in dollars)	5.3
Exercised (in dollars)	9.0	10.8
Additional disclosures
Compensation cost not yet recognized	1.5
Weighted-average period over which compensation cost is to be recognized	2 years
Tax benefit realized for the tax deductions from option exercises	$ 3.6	$ 4.4