STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2017

Summary of option activity

	Stock Awards Plans					Director Stock Option Plans
			Weighted Average				Weighted Average
		Options	Exercise Price			Options	Exercise Price
Outstanding, January 1, 2017		8,070,444	$	56.36		281,334	$	56.45
Granted		1,622,082		74.90		—		—
Exercised		(1,501,210)		46.65		(66,367)		53.23
Forfeited or expired		(131,997)		70.70		—		—
Outstanding at December 31, 2017		8,059,319	$	61.67		214,967	$	57.44
Exercisable at December 31, 2017		5,151,257	$	55.72		214,967	$	57.44
Weighted-Average Remaining Contractual Term (Years):
Outstanding at December 31, 2017		6.1				5.0
Exercisable at December 31, 2017		4.8				5.0
Aggregate Intrinsic Value:
Outstanding at December 31, 2017	$	198,358			$	6,199
Exercisable at December 31, 2017	$	157,436			$	6,199
Intrinsic Value of Options Exercised During the Years Ended:
December 31, 2017	$	51,140			$	1,995
December 31, 2016	$	44,972			$	548
December 31, 2015	$	43,041			$	1,478

Summary of restricted stock unit activity

				Director Restricted
	Stock Awards Plans			Stock Unit Plan
		Weighted Average			Weighted Average
	RSUs	Grant-Date Fair Value		RSUs	Grant-Date Fair Value
Nonvested at January 1,  2017	72,127	$	69.31	15,745	$	75.56
Granted	89,110		74.43	14,793		80.45
Vested	(51,963)		68.52	(15,745)		75.56
Nonvested at December 31, 2017	109,274	$	73.86	14,793	$	80.45

Stock Awards Plans

Weighted-average assumptions used to estimate fair value of stock options granted

Stock Awards Plans:
Years Ended December 31,	2017		2016		2015
Dividend Yield	1.7	%	1.8	%	1.7	%
Expected Stock Price Volatility	15.8	%	16.9	%	21.9	%
Risk-free Interest Rate	2.2	%	1.6	%	1.6	%
Expected Life of Option (years)	6.7		6.7		6.9