Stock Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2011

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-Based Compensation Expense Included In Consolidated Statement Of Income

	December 31,
(DOLLARS IN THOUSANDS)	2011			2010			2009
Equity-based awards	$	20,547		$	18,382		$	17,449
Liability-based awards		3,044			3,619			2,203
Total stock-based compensation		23,591			22,001			19,652
Less tax benefit		(7,730	)		(8,028	)		(7,102	)
Total stock-based compensation, net of tax	$	15,861		$	13,973		$	12,550

Principal Assumptions For SSAR's Granted Fair Value

	2011		2010		2009
Weighted average fair value of SSAR's granted during the period	$	11.47	$	10.41	$	7.08
Assumptions:
Risk-free interest rate		1.7%		2.2%		2.5%
Expected volatility		23.2%		29.8%		30.9%
Expected dividend yield		2.1%		2.2%		3.2%
Expected life, in years		5		5		5
Termination rate		0.99%		1.09%		0.91%
Exercise multiple		1.43		1.38		1.46

SSAR's And Stock Option Activity

(SHARE AMOUNTS IN THOUSANDS)	Shares Subject to SSAR's/ Options			Weighted Average Exercise Price		SSAR's/ Options Exercisable
Balance at December 31, 2010		1,440		$	37.46		883
Granted		78		$	62.13
Exercised		(428	)	$	37.46
Balance at December 31, 2011		1,090		$	39.16		627

SSAR's And Stock Option Outstanding

Price Range	Number Outstanding (in thousands)		Weighted Average Remaining Contractual Life (in years)		Weighted Average Exercise Price		Aggregate Intrinsic  Value (in thousands)
$26 – $30		287		3.6	$	30.14
$31 – $35		224		1.1	$	33.05
$36 – $40		100		3.3	$	36.85
$41 – $50		330		4.6	$	43.79
$51 – $55		71		4.7	$	51.44
$56 – $65		78		6.4	$	62.13
		1,090			$	39.16	$	14,453

SSAR's And Stock Option Exercisable

Price Range	Number Exercisable (in thousands)		Weighted Average Remaining Contractual Life (in years)		Weighted Average Exercise Price		Aggregate Intrinsic Value (in thousands)
$26 – $30		131		1.1	$	29.73
$31 – $35		224		1.2	$	33.05
$36 – $40		65		2.6	$	37.27
$41 – $50		136		3.3	$	42.18
$51 – $55		71		4.7	$	51.44
		627			$	36.86	$	9,760

RSU's [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU, PRS And Cash RSU Activity

(SHARE AMOUNTS IN THOUSANDS)	Number of Shares			Weighted Average Grant Date Fair Value Per Share
Balance at December 31, 2010		867		$	37.43
Granted		219		$	59.80
Vested		(267	)	$	42.58
Forfeited		(37	)	$	42.39
Balance at December 31, 2011		782		$	44.91

PRS [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU, PRS And Cash RSU Activity

(SHARE AMOUNTS IN THOUSANDS)	Number of Shares			Weighted Average Grant Date Fair Value Per Share
Balance at December 31, 2010		525		$	19.32
Granted		174		$	31.07
Vested		(202	)	$	20.28
Balance at December 31, 2011		497		$	23.03

Cash RSU's [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU, PRS And Cash RSU Activity

(SHARE AMOUNTS IN THOUSANDS)	Cash RSUs			Weighted Average Fair Value Per Share
Balance at December 31, 2010		162		$	55.59
Granted		40		$	52.42
Vested		(45	)	$	62.74
Cancelled		(3	)	$	56.91
Balance at December 31, 2011		154		$	52.42