Stock Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2011

Stock Compensation Plans [Abstract]

Schedule Of Fair Value Options Granted Date Using Weighted-Average Assumptions

	2011			2010			2009
Risk-free interest rate		1.92	%		2.12	%		1.73	%
Expected life of option		4.70 yrs.			4.66 yrs.			4.55 yrs.
Expected dividend yield		2.34	%		2.22	%		3.25	%
Expected volatility		26.82	%		26.42	%		32.66	%

Schedule Of Fair Value For Non-Vested Shares Granted Date Using Weighted-Average Assumptions

	2011			2010			2009
Risk-free interest rate		1.04	%		1.25	%		1.21	%
Expected dividend yield		2.34	%		2.24	%		3.18	%

Schedule Of Stock Option Activity

	Shares Subject to Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life In Years		Aggregate Intrinsic Value
								(Dollars in thousands)
Outstanding, beginning of the year		2,274,627		$	56.17
Granted		383,275			57.92
Exercised		(683,132	)		50.22
Forfeited or expired		(842,224	)		60.44
Outstanding, end of the year		1,132,546		$	57.17		6.8	$	5,613
Exercisable, end of the year		628,325		$	56.31		5.2	$	4,053

Schedule Of Non-Vested Restricted Stock Unit Activity

	Number of Non-Vested Shares			Weighted Average Grant Date Price		Weighted Average Remaining Contractual Life In Years		Aggregate Intrinsic Value
								(Dollars in thousands)
Outstanding, beginning of the year		386,543		$	55.03
Granted		175,291			58.14
Vested		(90,508	)		57.14
Forfeited		(136,867	)		53.79
Outstanding, end of the year		334,459		$	56.60		1.5	$	20,499