Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2011

Share-Based Compensation

Summary of assumptions to estimate the fair value of stock option awards

	For the three months ended				For the six months ended
	June 30,				June 30,
	2011		2010		2011		2010
Weighted-average volatility	30.85	%	31.38	%	30.91	%	31.41	%
Dividend yield	2.48	%	0.69	%	1.47	%	0.73	%
Expected term (in years)	5.81		5.80		6.04		6.08
Risk-free interest rate	2.24	%	2.83	%	2.97	%	2.99	%

Summary of option activity and related information under the Plan

			Weighted				Weighted
			Average		Aggregate		Average
	Number of		Exercise		Intrinsic		Remaining
	Shares		Price		Value		Contractual
Options	(in thousands)		(per share)		(in thousands) (1)		Term
Outstanding at January 1, 2011	4,650		$	51.38
Granted	486		60.76
Exercised	(120	)	37.66
Forfeited or expired	(24	)	55.80
Outstanding at June 30, 2011	4,992		$	52.60	$	34,978	5.61
Exercisable at June 30, 2011	3,357		$	55.65	$	18,494	4.23

(1) Includes in-the-money options only.

Summary of changes in unvested options and related information under the Plan

			Weighted Average
	Number of		Grant Date
	Shares		Fair Value
Unvested Options	(in thousands)		(per share)
Unvested at January 1, 2011	1,753		$	11.62
Granted	486		18.38
Vested	(592	)	11.74
Forfeited	(12	)	11.84
Unvested at June 30, 2011	1,635		$	13.58

Summary of changes in restricted stock and related information under the Plan

			Weighted Average
	Number of		Grant Date
	Shares		Fair Value
Restricted Stock (1)	(in thousands)		(per share)
Unvested at January 1, 2011	717		$	45.04
Granted	331		60.83
Vested	(151	)	49.04
Forfeited	(7	)	47.34
Unvested at June 30, 2011	890		$	50.21

(1) Includes restricted stock units.