XML 80 R35.htm IDEA: XBRL DOCUMENT

Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The weighted-average assumptions used were as follows:



	2012			2011			2010
Expected dividend yield	0		%	0		%	0		%
Expected volatility	46.59		%	45.40		%	43.43		%
Risk-free interest rate	0.46		%	1.29		%	2.83		%
Expected term (years)	6.0			6.0			6.5
Weighted-average grant date fair value of stock options granted	$	29.45		$	23.39		$	15.96

Schedule of Share-based Compensation, Stock Option Activity

The following table summarizes the stock option activity under the Plans:



	Number of Shares		Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value
					In years	In millions
Options outstanding at December 31, 2011	501,636		$	29.81
Granted	69,552		66.99
Exercised	(201,704	)	17.12
Forfeited or expired	(1,413	)	59.87
Options outstanding at December 31, 2012	368,071		$	43.67	6.97	$	14.7
Vested and expected to vest at December 31, 2012	363,782		$	43.55	6.96	$	14.5
Exercisable at December 31, 2012	222,486		$	34.43	6.09	$	10.9

Schedule of Stock Option Exercise Activity

Additional information regarding stock option exercises appears in the table below (in millions):



	2012		2011		2010
Aggregate grant-date fair value of stock options vested	$	1.3	$	1.1	$	2.0
Intrinsic value of stock options exercised	12.1		9.5		21.7
Cash received from option exercises	1.9		2.1		2.1
Tax benefit realized from options exercised during the annual period	4.6		0.2		1.2

Schedule of Share-based Compensation, Nonvested Stock Activity

A summary of nonvested stock activity is as follows:



	Number of Shares		Weighted- Average Grant Date Fair Value		Aggregate Intrinsic Value
					In millions
Nonvested stock at December 31, 2011	318,412		$	41.08
Granted	87,146		70.98
Vested	(104,904	)	42.53
Forfeited	(21,687	)	47.54
Nonvested stock at December 31, 2012	278,967		$	49.37	$	23.3

Schedule of Share-based Compensation, Performance Based Award Activity

A summary of performance based nonvested stock activity at target is as follows:



	Target Number of Shares *		Weighted-Average Grant Date Fair Value
Nonvested stock, at December 31, 2011	25,160		$	52.66
Granted	86,302		62.81
Vested	(417	)	52.62
Forfeited	(2,466	)	61.26
Nonvested stock, at December 31, 2012	108,579		$	60.54

_____________________

* For the 2012 Awards, participants in the aggregate can earn up to a maximum of 119,342 shares. For the 2011 Awards, the performance shares earned in 2012 and 2011 were 48,898 and 47,995 which was approximately 200% and 193% of the annual target award granted for the 2012 and 2011 performance periods, respectively. For the 2013 performance period, participants in the aggregate can earn up to a maximum of 48,884 shares.

Schedule of Employee Stock Purchase Plan Activity

The following table summarizes activity related to the various ESPP offerings:



	Exercise Date				Received from Employees(i)
	Date Issued	Purchase Price		Shares Issued	Received from Employees(i)
					In millions
July 2012 offering	January 14, 2013	$	61.73	23,099	$	1.4
January 2012 offering	July 13, 2012	61.84		21,559	1.3
July 2011 offering	January 13, 2012	54.55		22,760	1.2
January 2011 offering	July 14, 2011	43.76		27,170	1.2
July 2010 offering	January 14, 2011	32.49		32,220	1.0
January 2010 offering	July 14, 2010	29.63		30,670	0.9

_____________________


(i)	Represents amounts received from employees through payroll deductions for share purchases under applicable offering.

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

The weighted-average assumptions used for each of the respective periods were as follows:



	Year Ended December 31,
	2012			2011			2010
Expected dividend yield	0.59		%	0		%	0		%
Expected volatility	28.97		%	22.72		%	31.00		%
Risk-free interest rate	0.14		%	0.18		%	0.21		%
Expected term (years)	0.5			0.5			0.5
Weighted-average grant date fair value	$	12.40		$	8.87		$	6.46