Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2011

Stock-Based Compensation

Summary Of Stock Option Activity

	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value
Outstanding at December 31, 2010		6,912,014		$	24.51
Options granted in 2011		0			—
Exercised in 2011		(596,682	)	$	21.84
Cancelled/forfeited/expired in 2011		(3,100	)	$	26.89
Outstanding at September 30, 2011		6,312,232		$	24.76		2.88	$	4,408,183
Exercisable at September 30, 2011		5,416,232		$	25.49		2.33	$	2,508,663
Vested or expected to vest in the future as of September 30, 2011		6,311,157		$	24.76		2.88	$	4,405,904

Summary Of Restricted Stock Activity

	Shares			Weighted- Average  Grant Date Fair Value  Per Share
Unvested at December 31, 2010		2,684,250		$	21.79
Granted		20,000		$	28.88
Vested		(179,225	)	$	26.33
Forfeited		(14,738	)	$	24.56
Unvested at September 30, 2011		2,510,287		$	21.50