Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2011

Share-Based Compensation Plans [Abstract]


	Years Ended December 31,
	2011	2010	2009
Weighted-average volatility	26.46%	26.82%	27.32%
Weighted-average dividend yield	2.00%	2.00%	2.00%
Weighted-average expected term	6.73 years	6.74 years	6.63 years
Weighted-average risk-free rate	2.80%	3.04%	2.13%

Company's Shareholder Approved And Non-Approved Plans


					Weighted-
			Weighted-		Average
			Average		Remaining		Aggregate
(Aggregate Intrinsic Value in thousands)			Exercise		Contractual		Intrinsic
Options	Shares		Price/Share		Term		Value
Outstanding at January 1, 2011		2,657,796	$	81.16
Granted		345,600		86.68
Exercised		477,320		66.12
Forfeited/Cancelled/Expired		209,800		88.91
Outstanding at December 31, 2011		2,316,276		84.39		6.0	$	12,121

Exercisable at December 31, 2011		1,229,481		84.94		4.4	$	7,920


					Weighted-
			Weighted-		Average
			Average		Remaining		Aggregate
(Aggregate Intrinsic Value in thousands)			Exercise		Contractual		Intrinsic
Options	Shares		Price/Share		Term		Value
Outstanding at January 1, 2010		2,418,756	$	79.86
Granted		384,890		84.63
Exercised		78,730		52.35
Forfeited/Cancelled/Expired		67,120		87.75
Outstanding at December 31, 2010		2,657,796		81.16		5.8	$	22,309

Exercisable at December 31, 2010		1,479,176		79.33		3.9	$	15,773


					Weighted-
			Weighted-		Average
			Average		Remaining		Aggregate
(Aggregate Intrinsic Value in thousands)			Exercise		Contractual		Intrinsic
Options	Shares		Price/Share		Term		Value
Outstanding at January 1, 2009		1,967,626	$	80.29
Granted		654,900		72.01
Exercised		138,170		43.55
Forfeited/Cancelled/Expired		65,600		91.06
Outstanding at December 31, 2009		2,418,756		79.86		6.2	$	26,186

Exercisable at December 31, 2009		1,251,276		75.78		4.2	$	17,304

Compensation plans not approved by shareholders:


					Weighted-
			Weighted-		Average
			Average		Remaining		Aggregate
(Aggregate Intrinsic Value in thousands)			Exercise		Contractual		Intrinsic
Options	Shares		Price/Share		Term		Value
Outstanding at January 1, 2011		20,000	$	48.01
Granted		-		-
Exercised		20,000		48.01
Forfeited/Cancelled/Expired		-		-
Outstanding at December 31, 2011		-		-		0.0	$	-

Exercisable at December 31, 2011		-		-		0.0	$	-


					Weighted-
			Weighted-		Average
			Average		Remaining		Aggregate
(Aggregate Intrinsic Value in thousands)			Exercise		Contractual		Intrinsic
Options	Shares		Price/Share		Term		Value
Outstanding at January 1, 2010		37,500	$	43.48
Granted		-		-
Exercised		17,500		38.30
Forfeited/Cancelled/Expired		-		-
Outstanding at December 31, 2010		20,000		48.01		0.7	$	742

Exercisable at December 31, 2010		20,000		48.01		0.7	$	742


					Weighted-
			Weighted-		Average
			Average		Remaining		Aggregate
(Aggregate Intrinsic Value in thousands)			Exercise		Contractual		Intrinsic
Options	Shares		Price/Share		Term		Value
Outstanding at January 1, 2009		83,000	$	37.09
Granted		-		-
Exercised		45,500		31.83
Forfeited/Cancelled/Expired		-		-
Outstanding at December 31, 2009		37,500		43.48		1.4	$	1,592

Exercisable at December 31, 2009		37,500		43.48		1.4	$	1,592

Share Options Outstanding


		At December 31, 2011
		Options Outstanding						Options Exercisable
				Weighted-
				Average		Weighted-				Weighted-
		Number		Remaining		Average		Number		Average
Range of		Outstanding		Contractual		Exercise		Exercisable		Exercise
Exercise Prices		at 12/31/11		Life		Price		at 12/31/11		Price
$	53.1375- $63.7650		93,450		0.7	$	55.60		93,450	$	55.60
$	63.7651- $74.3925		765,036		5.4		72.54		445,896		73.14
$	74.3926- $85.0200		334,990		8.1		84.63		69,095		84.63
$	85.0201- $95.6475		547,850		7.0		89.98		214,550		95.13
$	95.6476- $106.2750		574,950		5.6		99.36		406,490		99.30
			2,316,276		6.0		84.39		1,229,481		84.94

Status Of The Company's Non-Vested Shares And Changes


	Years Ended December 31,
	2011				2010				2009
			Weighted-				Weighted-				Weighted-
			Average				Average				Average
			Grant Date				Grant Date				Grant Date
Restricted (non-vested) Shares	Shares		Fair Value		Shares		Fair Value		Shares		Fair Value
Outstanding at January 1,		250,125	$	84.09		200,446	$	82.45		139,662	$	96.39
Granted		226,700		86.15		150,055		84.66		131,700		73.25
Vested		69,872		85.61		58,376		86.62		39,216		95.83
Forfeited		34,500		83.39		42,000		74.79		31,700		89.06
Outstanding at December 31,		372,453		85.12		250,125		84.09		200,446		82.45

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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