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Repurchases Of Common Stock (Tables)

9 Months Ended

Sep. 30, 2012

Repurchases Of Common Stock [Abstract]


	For the Three Months Ended				For the Nine Months Ended
	September 30,				September 30,
	2012		2011		2012		2011

Shares repurchased		386		886		1,038		2,183
Total cost of shares repurchased	$	36,146	$	67,597	$	91,152	$	166,016
Average cost per share	$	93.76	$	76.27	$	87.82	$	76.04

- Definition

Tabular disclosure of an entity's treasury stock, including the average cost per share, carrying basis for each class of treasury stock, description of share repurchase program authorized by an entity's board of directors, the number of shares repurchased, the cost of the shares repurchased, the remaining maximum dollar value of shares available for repurchase under the program, the treatment of the purchase price in excess of the current market value, number of shares held for each class of treasury stock, and other information necessary to a fair presentation.

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