Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011
Common stock dividends, per share	$ 0.15		$ 0.07
Preferred stock dividends, per share	$ 3,056		$ 3,044
U.S. Treasury preferred stock dividends, per share			$ 1,236
Treasury Stock, Value	$ 616	[1]
Stockholders' Equity Attributable to Noncontrolling Interest	114
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	607		1,820
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	603		661
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(706)		(455)
Treasury Stock and Other
Treasury Stock, Value	673		858
Deferred Compensation Equity	57		58
Stockholders' Equity Attributable to Noncontrolling Interest	$ 114		$ 121

[1] 4 Includes noncontrolling interest held114 107