Shareholders' Equity and Dividend Availability (tables)

12 Months Ended

Dec. 31, 2011

Shareholders' Equity and Dividend Availability disclosure

Share repurchase activity and remaining repurchase capacity under the share repurchase authorization [Table Text Block]

Quarterly Period Ending (in millions, except per share amounts)	Number of shares purchased		Cost of shares repurchased		Average price paid per share		Remaining capacity under share repurchase authorization
March 31, 2011		18.9	$	1,100	$	58.23	$	5,409
June 30, 2011		3.9		237		60.27		5,172
September 30, 2011		7.3		375		51.77		4,797
December 31, 2011		20.9		1,188		56.74		3,609
Total		51.0	$	2,900	$	56.86	$	3,609

Changes in each component of Accumulated Other Changes in Equity from Nonowner Sources [Table Text Block]

(at and for the year ended December 31, in millions)	Net Unrealized Gains (Losses) on Investment Securities			Net Benefit Plan Assets and Obligations Recognized in Equity			Net Unrealized Foreign Currency Translation and Other			Accumulated Other Changes in Equity from Nonowner Sources
Balance, December 31, 2008	$	(146	)	$	(549	)	$	(205	)	$	(900	)
Cumulative effect of adoption of updated accounting guidance at April 1, 2009 net of tax benefit of $(38) (see note 1)		(71	)		—			—			(71	)
Net change in unrealized gains on investment securities, net of tax expense of $1,119		2,085			—			—			2,085
Less: Reclassification adjustment for net realized gains included in net income, net of tax benefit of $(6)		(12	)		—			—			(12	)
Net change in benefit plan assets and obligations recognized in equity, net of tax benefit of $(47)		—			(88	)		—			(88	)
Change in other, net of tax expense of $46		—			—			205			205
Current period change		2,002			(88	)		205			2,119
Balance, December 31, 2009		1,856			(637	)		—			1,219
Net change in unrealized gains on investment securities, net of tax expense of $110		204			—			—			204
Less: Reclassification adjustment for net realized gains included in net income, net of tax benefit of $(108)		(201	)		—			—			(201	)
Net change in benefit plan assets and obligations recognized in equity, net of tax expense of $12		—			27			—			27
Change in other, net of tax expense of $6		—			—			6			6
Current period change		3			27			6			36
Balance, December 31, 2010		1,859			(610	)		6			1,255
Net change in unrealized gains on investment securities, net of tax expense of $600		1,083			—			—			1,083
Less: Reclassification adjustment for net realized gains included in net income, net of tax benefit of $(38)		(71	)		—			—			(71	)
Net change in benefit plan assets and obligations recognized in equity, net of tax benefit of $(106)		—			(201	)		—			(201	)
Change in other, net of tax benefit of $(29)		—			—			(61	)		(61	)
Current period change		1,012			(201	)		(61	)		750
Balance, December 31, 2011	$	2,871		$	(811	)	$	(55	)	$	2,005