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Capital Stock (Tables)

12 Months Ended

Dec. 31, 2011

Stock Repurchases Pursuant To Board Of Director Authorizations


	Shares Repurchased						Authorization Remaining at December 31, 2011
Board of Directors' Authorization	2011		2010		2009		Authorization Remaining at December 31, 2011
1997 Authorization		6.2		0.1		0.1		1.9
2007 Authorization		—		—		—		16.7

Total		6.2		0.1		0.1		18.6

- 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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