Share-Based Compensation And Capital Stock (Tables)

12 Months Ended

Dec. 31, 2011

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Weighted Average Assumptions Of Black-Scholes Option-Pricing Model

The fair value of the options granted was estimated on the grant date using the Black-Scholes option-pricing model with the following weighted average assumptions:

	2011			2010			2009
Risk-free interest rate	2.10		%	2.19		%	1.82		%
Expected volatility	39.51		%	41.92		%	39.71		%
Expected life of stock option	4.4 years			4.4 years			4.4 years
Dividend yield	1.79		%	2.26		%	2.74		%
Requisite service period	4 years			4 years			4 years
Contractual life	7 years			7 years			7 years
Weighted average fair value of options granted (per option)	$	12.42		$	10.07		$	7.41

Schedule of Options Outstanding and Exercisable

The following table summarizes information about stock options outstanding at December 31, 2011:

	Options Outstanding				Options Exercisable
Range of Exercise Prices	Number Outstanding at December 31, 2011	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price		Number Exercisable at December 31, 2011	Weighted Average Exercise Price
$ 0.00 to $19.50	53,824	1.0 years	$	10.72	53,824	$	10.72
$19.51 to $29.25	377,128	4.1 years	$	27.00	187,149	$	27.00
$29.26 to $34.12	481,288	4.8 years	$	32.59	259,032	$	32.45
$34.13 to $39.00	327,764	3.2 years	$	35.55	265,363	$	35.68
$39.01 to $43.87	251,045	5.3 years	$	40.97	105,114	$	40.58
$43.88 to $48.75	82,677	4.1 years	$	48.73	82,677	$	48.73
	1,573,726	4.2 years	$	33.30	953,159	$	33.36

Summary Of Activity Related To Restricted Stock Grants

The following table is a summary of activity related to restricted stock grants to non-employee directors and key employees for the year ended December 31:

	2011		2010		2009
Restricted shares granted	247,298		279,157		262,128
Weighted average grant date fair value per share	$	38.84	$	33.07	$	27.28
Aggregate grant date fair value ($000)	$	9,604	$	9,233	$	7,150
Restricted shares forfeited	68,580		41,796		43,408
Vesting service period of shares granted	1-4 years		3-4 years		3-4 years
Grant date fair value of shares vested ($000)	$	6,662	$	6,222	$	5,572

Summary Of Activity Related To PVRSU Grants

The following table is a summary of activity related to PVRSU grants during the years ended December 31, 2011, 2010 and 2009:

	2011		2010		2009
Performance vested restricted stock units granted at target	25,036		33,517		9,588
Weighted average grant date fair value per share	$	41.25	$	32.60	$	26.88
Average aggregate grant date fair value ($000)	$	1,033	$	1,093	$	258
Stock units forfeited	43,179		13,110		6,046
Requisite service period	3 years		3 years		2 years

Summary Of Change In Stock-Based Award Activity

All PVRSU units forfeited during the year ended December 31, 2009 were related to employee terminations.

A summary of stock-based award activity as of December 31, 2011, 2010 and 2009 and the changes during the years are presented below:

	2011
	Stock Options					Restricted Stock				Performance Vested Restricted Stock Units
	Options		Weighted Average Exercise Price		Weighted Average Contractual Term	Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
Outstanding at January 1, 2011	1,732,674		$	31.43		592,131		$	31.81	127,912		$	33.43
Granted	166,306		$	41.25		247,298		$	38.84	25,036		$	41.25
Exercised/Vested	(175,386	)	$	21.92		(205,222	)	$	32.46	—		$	—
Forfeited/Expired	(149,868	)	$	33.76		(68,580	)	$	33.55	(43,179	)	$	32.53
Outstanding at December 31, 2011	1,573,726		$	33.30	4.2 years	565,627		$	34.43	109,769		$	35.57
Options exercisable at December 31, 2011	953,159		$	33.36	3.8 years

	2010
	Stock Options					Restricted Stock				Performance Vested Restricted Stock Units
	Options		Weighted Average Exercise Price		Weighted Average Contractual Term	Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
Outstanding at January 1, 2010	1,658,844		$	30.05		539,341		$	31.68	118,385		$	34.58
Granted	261,137		$	32.84		279,157		$	33.07	33,517		$	32.60
Exercised/Vested	(123,109	)	$	19.96		(184,571	)	$	33.71	(10,880	)	$	40.65
Forfeited/Expired	(64,198	)	$	23.53		(41,796	)	$	30.31	(13,110	)	$	35.70
Outstanding at December 31, 2010	1,732,674		$	31.43	4.4 years	592,131		$	31.81	127,912		$	33.43
Options exercisable at December 31, 2010	792,499		$	31.73	3.5 years

	2009
	Stock Options					Restricted Stock				Performance Vested Restricted Stock Units
	Options		Weighted Average Exercise Price		Weighted Average Contractual Term	Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
Outstanding at January 1, 2009	1,950,783		$	24.03		482,236		$	34.93	129,481		$	37.00
Granted	537,006		$	27.02		262,128		$	27.28	9,588		$	26.88
Exercised/Vested	(764,612	)	$	11.98		(161,615	)	$	34.48	(19,761	)	$	48.72
Performance-Based Leveraging*	—		$	—		—		$	—	5,123		$	48.72
Forfeited/Expired	(64,333	)	$	37.13		(43,408	)	$	30.79	(6,046	)	$	39.95
Outstanding at December 31, 2009	1,658,844		$	30.05	5.4 years	539,341		$	31.68	118,385		$	34.58
Options exercisable at December 31, 2009	576,577		$	27.67	4.4 years

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 * PVRSU grants outstanding at January 1, 2009 have been increased by 5,123 units due to the Company exceeding the targeted performance conditions contained in PVRSUs granted in prior periods during the year ended December 31, 2009.

Pre-Tax Stock-Based Compensation Expenses And Associated Income Tax Benefits

The components of the Company’s pretax stock-based compensation expense and associated income tax benefits are as follows for the years ended December 31:

(in millions)	2011		2010			2009
Stock options	$	2.8	$	2.4		$	2.8
Restricted stock	7.7		6.8			6.4
Performance vested restricted stock units	0.7		(0.3		)	(0.2		)
Total	$	11.2	$	8.9		$	9.0
Income tax benefits	$	4.1	$	3.3		$	3.4

Schedule of Unrecognized Compensation Cost, Nonvested Awards

The total unrecognized compensation costs related to stock-based awards that have not yet vested and the related weighted average amortization period over which the costs are to be recognized as of December 31, 2011 are as follows:

	Unrecognized Compensation Expense on Unvested Awards		Weighted Average Amortization Period
	(in millions)
Stock options	$	3.3	2.2 years
Restricted stock	12.3		2.4 years
Performance vested restricted stock units	0.9		1.7 years
Total	$	16.5