Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2012

Compensation Plans

Summary of the option activity

A summary of the stock option activity in 2012 is presented in the following table (dollars and shares in thousands, except per share amounts):

	Shares Under Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding as of January 1, 2012		6,524		$	28.76		6.1	$	84,169
Granted		455			41.64
Exercised		(3,838	)		28.33
Forfeited		(14	)		26.40
Outstanding as of December 31, 2012		3,127			31.16		6.9		43,774
Exercisable as of December 31, 2012		539			32.09		6.0		7,041

Summary additional information concerning outstanding and exercisable stock options

The following table summarizes additional information concerning outstanding and exercisable stock options at December 31, 2012 (shares in thousands):

					Weighted Average Remaining Contractual Term (Years)		Currently Exercisable
Range of Exercise Price	Shares Under Options		Weighted Average Exercise Price				Shares Under Options		Weighted Average Exercise Price
$23.34 - $25.52		910	$	23.34		6.1		54	$	23.34
27.11 -  28.35		739		28.28		6.8		210		28.12
31.95 -  41.64		1,478		37.41		7.4		275		36.84
		3,127		31.16		6.9		539		32.09

Summary of additional information concerning unvested stock options

The following table summarizes additional information concerning unvested stock options at December 31, 2012 (shares in thousands):

	Shares Under Options			Weighted Average Grant Date Fair Value
Unvested at January 1, 2012		3,285		$	3.77
Granted		455			6.34
Vested		(1,138	)		3.59
Forfeited		(14	)		3.67
Unvested at December 31, 2012		2,588			4.30

Assumptions used for estimating fair value of stock options using Black-Scholes option valuation model

The following table summarizes the Company's stock option valuation assumptions used with respect to stock options awarded in 2012, 2011 and 2010:

	2012			2011			2010
Risk-free rate		1.09	%		2.58	%		2.77	%
Expected life (in years)		5.9			6.5			6.3
Expected volatility		32.7	%		31.8	%		35.0	%
Expected dividend yield		5.9	%		6.1	%		6.2	%

Summary of additional information concerning restricted stock and restricted stock units

The following table summarizes additional information concerning restricted stock and restricted stock units at December 31, 2012 (units and shares in thousands):

	Restricted Stock Units			Weighted Average Grant Date Fair Value		Restricted Shares			Weighted Average Grant Date Fair Value
Unvested at January 1, 2012		1,478		$	32.59		339		$	27.75
Granted		456			41.67		—			N/A
Vested		(707	)		33.03		(186	)		27.55
Forfeited		(7	)		38.29		(8	)		26.72
Unvested at December 31, 2012		1,220			35.16		145			27.24