Capital Stock (Tables)

12 Months Ended

Dec. 31, 2011

Capital Stock [Abstract]

Schedule Components Of Authorized Capital Stock

	Shares Issued		Shares Repurchased			Shares Outstanding
Balances, December 31, 2008		2,805,961,317		(744,589,733	)		2,061,371,584
Exercise of stock options and issuance of other stock awards				14,657,060			14,657,060
Balances, December 31, 2009		2,805,961,317		(729,932,673	)		2,076,028,644
Exercise of stock options and issuance of other stock awards				12,711,022			12,711,022
Balances, December 31, 2010		2,805,961,317		(717,221,651	)		2,088,739,666
Exercise of stock options and issuance of other stock awards				5,004,502			5,004,502
Repurchases of common stock				(49,324,883	)		(49,324,883	)
Balances, December 31, 2011		2,805,961,317		(761,542,032	)		2,044,419,285