Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Common stock dividends, per share	$ 0.15		$ 0.10
Treasury Stock, Value	$ (558)	[1]
Stockholders' Equity Attributable to Noncontrolling Interest	115
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	65		2,055
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	369		399
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(717)		(711)
Treasury Stock and Other
Treasury Stock, Value	(605)		(707)
Deferred Compensation Equity	(68)		(65)
Stockholders' Equity Attributable to Noncontrolling Interest	$ 115		$ 111
Series A Preferred Stock [Member]
Preferred Stock, Dividends, Per Share, Cash Paid	$ 2,022		$ 2,033
Series B Preferred Stock [Member]
Preferred Stock, Dividends, Per Share, Cash Paid	$ 2,022		$ 2,033
Series E Preferred Stock [Member]
Preferred Stock, Dividends, Per Share, Cash Paid	$ 2,856		$ 0

[1] 4 Includes noncontrolling interest held115 114