STOCK BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2011

STOCK BASED COMPENSATION

Schedule of stock option activity

					Weighted
			Weighted		Average	Aggregate
	Number of		Average		Remaining	Intrinsic
	Options		Exercise		Contractual	Value
	Outstanding		Price		Life	(in 000’s)
Outstanding options at January 1, 2011	1,524,982		$	41.32
Options granted	220,950		$	58.42
Options exercised	(253,816	)	$	31.26		$	6,265
Options canceled/forfeited	(21,630	)	$	44.83
Outstanding options at June 30, 2011	1,470,486		$	45.57	5.93	$	24,037
Exercisable options at June 30, 2011	782,016		$	42.02	5.04	$	15,565

					Weighted
			Weighted		Average	Aggregate
	Number of		Average		Remaining	Intrinsic
	Options		Exercise		Contractual	Value
	Outstanding		Price		Life	(in 000’s)
Outstanding options at January 1, 2010	1,583,803		$	44.73
Options granted	183,250		$	55.93
Options exercised	(155,439	)	$	31.50		$	3,784
Options canceled/forfeited	(23,130	)	$	50.51
Outstanding options at June 30, 2010	1,588,484		$	47.24	5.93	$	8,377
Exercisable options at June 30, 2010	910,793		$	43.59	4.87	$	8,128

Schedule of stock option assumptions for fair value estimate

	2011			2010
Weighted-average fair value of grants	$	12.85		$	13.37
Risk-free interest rates	2.35		%	2.76		%
Dividend yield	1.89		%	1.74		%
Expected volatility	25.67		%	25.91		%
Expected option life	5.50 years			5.57 years