Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Schedule Of Stock Option Plans Activity

	2011			2010			2009
Options outstanding at beginning of year		1,371			1,481			1,506
Options granted		76			40			76
Options exercised		(82	)		(74	)		(35	)
Options forfeited and expired		(60	)		(76	)		(66	)
Options outstanding at end of year.		1,305			1,371			1,481
Options exercisable at end of year		1,106			1,160			1,165
Option prices per share:
Options granted during the year	$	57.34			46.80			28.37
Options exercised during the year	$	28.37-63.14			16.66-57.88			16.66-48.50
Options forfeited and expired during the year	$	28.37-93.65			22.63-93.65			19.94-93.65
Options outstanding at end of year	$	28.37-93.65			28.37-93.65			16.66-93.65
Options exercisable at end of year	$	28.37-93.65			28.37-93.65			16.66-93.65

Assumptions Used In Fair Value Valuation Of Option Awards

	2011			2010			2009
Dividend yield		—			—			—
Risk-free interest rate		2.0	%		2.3	%		1.7	%
Volatility		48.1	%		45.2	%		35.3	%
Expected life (years)		5			5			5

Summary Of The Stock Options Under The 2007 Plan

	Shares			Weighted average exercise price		Weighted average remaining contractual term (years)		Aggregate intrinsic value
Options outstanding, December 31, 2010		1,371		$	71.48
Granted		76			57.34
Exercised		(82	)		46.15
Forfeited and expired		(60	)		75.16
Options outstanding, December 31, 2011		1,305			72.08		3.6	$	3,610
Vested and expected to vest as of December 31, 2011		1,297		$	72.16		3.5	$	3,565
Exercisable as of December 31, 2011		1,106		$	74.89		2.8	$	1,968

Summary Of Stock Options By Exercise Price Range

	Outstanding						Exercisable
Exercise price range	Number of shares		Average life		Average price		Number of shares		Average price
Under $57.34		267		5.9	$	46.40		127	$	44.49
$57.88-$73.45		342		1.2		68.32		342		68.32
$73.54-$81.90		226		5.1		76.59		173		77.23
$82.50-$88.00		193		3.3		84.60		193		84.60
$88.33-$88.33		235		3.0		88.33		234		88.33
$89.46-$93.65		42		4.7		93.02		37		92.93
Total		1,305		3.6	$	72.08		1,106	$	74.89

Summary Of RSUs Under The 2007 Plan

	Shares			Weighted average price		Weighted average remaining contractual term (years)		Aggregate intrinsic value
Restricted Stock Units outstanding, December 31, 2010		404		$	47.42
Granted		196			57.34
Released		(91	)		49.32
Forfeited		(14	)		56.30
Restricted Stock Units outstanding, December 31, 2011		495			50.76		2.8	$	29,593
Vested and expected to vest as of December 31, 2011		438		$	50.76		2.4	$	26,203

Additional Information For RSUs Under The 2007 Plan

	2011			2010			2009
Restricted Stock Units outstanding, January 1		404			359			187
Granted		196			149			204
Released		(91	)		(95	)		(22	)
Forfeited		(14	)		(9	)		(10	)
Restricted Stock Units outstanding, December 31		495			404			359
Vested and expected to vest as of December 31		438			343			317