Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2011

Share-Based Compensation

Schedule Of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range And Intrinsic Value

	Outstanding Options (1)				Exercisable Options (1)
Range of Exercise Prices	Number		Weighted Average Price		Number		Weighted Average Price
$30.06-$41.16		473,684	$	32.08		179,979	$	35.38
$42.90-$45.53		466,060		44.32		428,797		44.36
$48.02-$73.32		406,219		51.77		253,068		54.03
Total options		1,345,963	$	42.26		861,844	$	45.32

(1) The aggregate intrinsic values of outstanding options and exercisable options at September 30, 2011 were $18.3 million and $9.3 million, respectively. The aggregate intrinsic values were calculated as the excess, if any, between our closing share price of $55.26 per share on September 30, 2011 and the strike price of the underlying award.

Summary Of Share Incentive Plans

	Options Outstanding			Weighted Average Exercise  / Grant Price		Nonvested Share Awards Outstanding			Weighted Average Exercise / Grant Price
Total options and nonvested share awards outstanding at December 31, 2010		1,847,136		$	42.39		741,505		$	42.16
Granted		—			—		344,159			57.00
Exercised/vested		(501,173	)		42.64		(235,093	)		46.74
Forfeited		—			—		(16,024	)		43.89
Net activity		(501,173	)				93,042
Total options and nonvested share awards outstanding at September 30, 2011		1,345,963		$	42.26		834,547		$	46.96