Consolidated Statements of Changes in Equity (Unaudited) (USD $) In Millions, except Share data, unless otherwise specified	Total	Preferred Stock	Series B Preferred Stock	Common Stock	Common Stock Warrant	Capital Surplus	Retained Earnings	Retained Earnings Series A Preferred Stock	Retained Earnings Series B Preferred Stock	Treasury Stock, at Cost	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Beginning Balance at Dec. 31, 2010		$ 2,737		$ 946	$ 87	$ 3,711	$ 5,557			$ (1,904)	$ (17)	$ 257
Beginning Balance, Preferred Shares at Dec. 31, 2010		2,930,000
Beginning Balance, Common Shares at Dec. 31, 2010				880,608,000
Net income (loss)	514						503					11
Other comprehensive income (loss):
Net unrealized gains (losses) on securities available for sale, net of income taxes of $61 and ($31) for six months ended June 30, 2011 and 2012 respectively	103										103
Net unrealized gains (losses) on derivative financial instruments, net of income taxes of $4 and $5 for six months ended June 30, 2011 and 2012 respectively	7										7
Net distribution to noncontrolling interests												(250)
Foreign currency translation adjustments	13										13
Net pension and postretirement benefit costs, net of income taxes	3										3
Deferred compensation						(2)
Cash dividends declared on common shares ($.04 per share) ($.08 per share) for six months ended June 30, 2011 and 2012 respectively							(38)
Cash dividends declared on Preferred Stock								(12)	(31)
Preferred Stock- TARP redemption, shares		(25,000)
Preferred Stock- TARP redemption, value		(2,451)					(49)
Repurchase of common stock warrant					(87)	17
Amortization of discount on Series B Preferred Stock			4						(4)
Common shares issuance, Value				71		533
Common shares issuance, shares				70,621,000
Common shares reissued (returned) for stock options and other employee benefit plans						(68)				89
Common shares reissued for stock options and other employee benefit plans, Shares				2,593,000
Other		1
Ending Balance at Jun. 30, 2011	9,737	291		1,017	0	4,191	5,926			(1,815)	109	18
Ending Balance, Preferred Shares at Jun. 30, 2011		2,905,000
Beginning Balance at Dec. 31, 2011	9,922	291		1,017	0	4,194	6,246			(1,815)	(28)	17
Beginning Balance, Preferred Shares at Dec. 31, 2011		2,905,000
Beginning Balance, Common Shares at Dec. 31, 2011				953,008,000
Net income (loss)	441						436					5
Other comprehensive income (loss):
Net unrealized gains (losses) on securities available for sale, net of income taxes of $61 and ($31) for six months ended June 30, 2011 and 2012 respectively	(53)										(53)
Net unrealized gains (losses) on derivative financial instruments, net of income taxes of $4 and $5 for six months ended June 30, 2011 and 2012 respectively	8										8
Net distribution to noncontrolling interests	(1)
Foreign currency translation adjustments	(4)										(4)
Net pension and postretirement benefit costs, net of income taxes	5										5
Deferred compensation						8
Cash dividends declared on common shares ($.04 per share) ($.08 per share) for six months ended June 30, 2011 and 2012 respectively							(76)
Cash dividends declared on Preferred Stock								(11)
Common shares repurchased				(10,468,000,000)						(82,000,000)
Common shares reissued (returned) for stock options and other employee benefit plans						(82)				101
Common shares reissued for stock options and other employee benefit plans, Shares				2,933,000
Ending Balance at Jun. 30, 2012	$ 10,176	$ 291		$ 1,017	$ 0	$ 4,120	$ 6,595			$ (1,796)	$ (72)	$ 21
Ending Balance, Preferred Shares at Jun. 30, 2012		2,905,000