Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Common stock dividends, per share	$ 0.05		$ 0.01
Preferred stock dividends, per share	$ 1,011		$ 1,000
U.S. Treasury preferred stock dividends, per share			$ 1,236
Treasury Stock, Value	$ 699	[1]
Redeemable Noncontrolling Interest, Equity, Carrying Amount	111
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	1,913		1,457
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	468		407
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(707)		(439)
Treasury Stock and Other
Treasury Stock, Value	737		881
Deferred Compensation Equity	73		73
Redeemable Noncontrolling Interest, Equity, Carrying Amount	$ 111		$ 131

[1] Includes $111 and $107 as of March 31, 2012 and December 31, 2011, respectively, related to noncontrolling interest held.