Consolidated Statements of Shareholders' Equity (Parenthetical) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
Treasury Stock, Value	[1]	$ (1,451)
Common stock dividends, per share		$ 0.68	$ 0.50
Treasury Stock and Other
Treasury Stock, Value		$ (1,550)	$ (1,015)
Deferred Compensation Equity		(7)	(27)
Stockholders' Equity Attributable to Noncontrolling Interest		$ 106	$ 103
Series A Preferred Stock [Member]
Preferred Stock, Dividends, Per Share, Cash Paid		$ 3,044	$ 3,044
Series B Preferred Stock [Member]
Preferred Stock, Dividends, Per Share, Cash Paid		3,044	3,044
Series E Preferred Stock [Member]
Preferred Stock, Dividends, Per Share, Cash Paid		4,406	4,406
Series F Preferred Stock [Member]
Preferred Stock, Dividends, Per Share, Cash Paid		$ 4,813	$ 0

[1] Includes noncontrolling interest of $106 million and $108 million at September 30, 2015 and December 31, 2014, respectively.