Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Share-based Compensation [Abstract]

Summary Of Stock-Based Compensation Expense

Stock-based compensation expense was as follows:

	2012		2011		2010
Stock options	$	5	$	5	$	5
Restricted stock	12		12		14

Summary Of Stock Option Activity

A summary of stock option activity follows:

			2012
	Shares			Weighted average exercise price
Options outstanding at January 1	3,786,419			$	19.12
Granted	—			—
Exercised	(1,140,255	)		13.59
Forfeited	(82,900	)		25.15
Expired	(7,150	)		21.89
Options outstanding at December 31	2,556,114			21.38
Options fully vested or expected to vest at December 31	2,543,874			$	21.31

Summary Of Outstanding And Exercisable Options

The following table summarizes outstanding and exercisable options at December 31, 2012:

Options Outstanding					Options Exercisable
Range of exercise prices	Number outstanding	Weighted average remaining contractual life in years	Weighted average exercise price		Number exercisable	Weighted average exercise price
$8.60 to $8.75	453,568	1.3	$	8.61	453,568	$	8.61
$13.20 to $23.19	26,500	3.5	18.18		22,500	17.29
$23.45	1,936,046	4.0	23.45		1,441,846	23.45
$23.88 to $40.01	140,000	7.3	34.73		34,000	25.17
	2,556,114	3.7	21.38		1,951,914	19.96

Summary Of Weighted Average Fair Value Assumptions Of Stock Options

The fair values of stock option grants during 2011 and 2010 were estimated using the following weighted average assumptions:

	2011		2010
Risk-free interest rate	2.4	%	2.6	%
Expected life of option (years)	6.8		6.0
Expected stock price volatility	31.7	%	33.2	%
Expected dividend yield	—	%	—	%

Summary Of Restricted Stock Transactions

A summary of restricted stock activity follows:

	Number of shares
Non-vested shares outstanding at January 1, 2012	997,497
Awarded:
Time-vesting	126,582
Performance-based	216,188
Performance-based – achieved 149% level (grant-date fair value of $33.98)	125,552
Released:
Time-vesting shares awarded in 2009 through 2011	(185,848	)
Performance-based shares awarded in 2009	(256,229	)
Performance-based awards – achieved 149% level	(125,552	)
Non-vested shares outstanding at December 31, 2012	898,190

Summary Of Grant Date Fair Value Of Restricted Stock

The average grant-date fair value of restricted stock awarded in 2012, 2011 and 2010 follows:

	2012		2011		2010
Time-vested restricted stock	$	33.75	$	33.70	$	26.80
Performance-based shares	$	39.52	$	41.69	$	36.25

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions

The fair values of the performance-based shares awarded were calculated using a Monte Carlo valuation model and the following weighted average assumptions:

	2012		2011		2010
Risk-free interest rate	0.4	%	1.0	%	1.4	%
Expected term (years)	3		3		3
Expected stock price volatility	27.8	%	37.9	%	38.8	%