Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation

Information on stock options issued under the plans

	Number of Option Shares			Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value
								(in thousands)
Outstanding at December 31, 2008		8,804,578		$	28.27		6.30	$	17,677
Granted		1,849,375			22.32
Exercised		(491,078	)		11.06
Canceled		(196,750	)		32.27
Outstanding at December 31, 2009		9,966,125		$	27.83		5.67	$	33,038
Granted		1,868,500			27.19
Exercised		(823,056	)		13.96
Canceled		(177,125	)		28.84
Outstanding at December 31, 2010		10,834,444		$	28.75		5.16	$	76,807
Granted		1,631,000			35.47
Exercised		(695,915	)		24.02
Canceled		(161,500	)		26.96
Outstanding at December 31, 2011		11,608,029		$	30.00		4.53	$	100,337

Schedule of stock options exercisable under the plans

Exercisable at December 31,	Number of Option Shares		Weighted-Average Exercise Price
2011		7,490,154	$	30.26
2010		6,586,882		29.85
2009		5,872,151		27.41

Information about stock options outstanding, by exercise price range

	Exercise Price Range						Total
	$7.95 to $29.22		$29.34 to $35.15		$35.75 to $61.82		$7.95 to $61.82
Outstanding options
Number outstanding		5,559,390		4,484,390		1,564,249		11,608,029
Weighted-average remaining contractual life (years)		3.75		5.30		5.13		4.53
Weighted-average exercise price	$	24.66	$	32.63	$	41.48	$	30.00
Exercisable options
Number outstanding		3,457,765		2,628,140		1,404,249		7,490,154
Weighted-average exercise price	$	24.48	$	31.68	$	41.82	$	30.26

Information on restricted stock awards issued under the plans

	Number of Award Shares
Outstanding at December 31, 2008		380,000
Awarded		332,690
Released		(160,000	)
Canceled		—
Outstanding at December 31, 2009		552,690
Awarded		165,110
Released		(203,734	)
Canceled		(20,000	)
Outstanding at December 31, 2010		494,066
Awarded		97,005
Released		(234,772	)
Canceled		(1,010	)
Outstanding at December 31, 2011		355,289