Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

Share-Based Compensation

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

	For the three months ended March 31,
	2012		2011
Weighted-average volatility	30.58	%	30.91	%
Dividend yield	2.14	%	1.46	%
Expected term (in years)	6.11		6.04
Risk-free interest rate	1.44	%	2.98	%

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, 2012	4,990		$	52.61
Granted	603		46.66
Exercised	(59	)	34.24
Forfeited or expired	(460	)	50.83
Outstanding at March 31, 2012	5,074		$	52.28	$	265,246	5.96
Exercisable at March 31, 2012	3,443		$	54.54	$	187,779	4.62

(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, 2012	1,641		$	13.57
Granted	603		11.64
Vested	(599	)	12.22
Forfeited	(14	)	13.43
Unvested at March 31, 2012	1,631		$	13.35

Share-based compensation

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, 2012	875		$	50.12
Granted	76		46.66
Vested	(170	)	45.75
Forfeited	(5	)	48.24
Unvested at March 31, 2012	776		$	50.75

(1) Includes restricted stock units.

Cash-settled restricted stock units

Share-based compensation

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

	Number of
	Shares
Cash-Settled Restricted Stock Units	(in thousands)
Unvested at January 1, 2012	—
Granted	99
Forfeited	(1	)
Unvested at March 31, 2012	98