Shareholders Equity (Details 1) (USD $)	3 Months Ended										6 Months Ended
	Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012		Mar. 31, 2012		Jun. 30, 2013		Jun. 30, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 11,521,000,000								$ 11,521,000,000
Noncontrolling interests, Beginning Balance			143,000,000								143,000,000
Total Equity, Beginning Balance			11,664,000,000			12,146,000,000			12,025,000,000		11,664,000,000		12,025,000,000
Comprehensive income (loss), net, attributable to parent	244,000,000						85,000,000				272,000,000		416,000,000
Comprehensive income, net, attributable to noncontrolling interest	6,000,000						6,000,000				10,000,000		14,000,000
Comprehensive income, net, including portion attributable to noncontrolling interest	250,000,000						91,000,000				282,000,000		430,000,000
Cash dividends declared -common stock											(146,000,000)	[1]	(116,000,000)	[1]
Cash dividends declared preferred stock											(12,000,000)	[2]	(12,000,000)	[2]
Contribution of common stock to U.S. pension plan													130,000,000
Stock options and incentive plans, net											100,000,000		73,000,000
Payments to acquire treasury stock, including fees											(10,000,000)		(357,000,000)
Cancellation of treasury stock											0		0
Distributions to noncontrolling interests											(4,000,000)		(27,000,000)
Ending Balance	11,725,000,000				11,521,000,000						11,725,000,000
Noncontrolling interests, Ending Balance	149,000,000				143,000,000						149,000,000
Total Equity, Ending Balance	11,874,000,000				11,664,000,000		12,146,000,000				11,874,000,000		12,146,000,000
Common Stock, Dividends, Per Share, Declared	$ 0.0575		$ 0.0575		$ 0.0425	$ 0.0425	$ 0.0425		$ 0.0425		$ 0.115		$ 0.0850
Preferred Stock, Dividends Per Share, Declared	$ 20.00		$ 20		$ 20	$ 20	$ 20		$ 20
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			11,521,000,000						11,876,000,000		11,521,000,000		11,876,000,000
Comprehensive income (loss), net, attributable to parent											272,000,000		416,000,000
Cash dividends declared -common stock											(146,000,000)	[1]	(116,000,000)	[1]
Cash dividends declared preferred stock											(12,000,000)	[2]	(12,000,000)	[2]
Contribution of common stock to U.S. pension plan													130,000,000
Stock options and incentive plans, net											100,000,000		73,000,000
Payments to acquire treasury stock, including fees											(10,000,000)		(357,000,000)
Cancellation of treasury stock											0		0
Distributions to noncontrolling interests											0		0
Ending Balance	11,725,000,000						12,010,000,000				11,725,000,000		12,010,000,000
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			1,239,000,000						1,353,000,000		1,239,000,000		1,353,000,000
Comprehensive income (loss), net, attributable to parent											0		0
Cash dividends declared -common stock											0	[1]	0
Cash dividends declared preferred stock											0	[2]	0
Contribution of common stock to U.S. pension plan													15,000,000
Stock options and incentive plans, net											10,000,000		2,000,000
Payments to acquire treasury stock, including fees											0		0
Cancellation of treasury stock											(16,000,000)		(22,000,000)
Distributions to noncontrolling interests											0		0
Ending Balance	1,233,000,000						1,348,000,000				1,233,000,000		1,348,000,000
Additional Paid-in Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			5,622,000,000						6,317,000,000		5,622,000,000		6,317,000,000
Comprehensive income (loss), net, attributable to parent											0		0
Cash dividends declared -common stock											0	[1]	0
Cash dividends declared preferred stock											0	[2]	0
Contribution of common stock to U.S. pension plan													115,000,000
Stock options and incentive plans, net											90,000,000		71,000,000
Payments to acquire treasury stock, including fees											0		0
Cancellation of treasury stock											(98,000,000)		(156,000,000)
Distributions to noncontrolling interests											0		0
Ending Balance	5,614,000,000						6,347,000,000				5,614,000,000		6,347,000,000
Treasury Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			(104,000,000)						(124,000,000)		(104,000,000)		(124,000,000)
Comprehensive income (loss), net, attributable to parent											0		0
Cash dividends declared -common stock											0	[1]	0
Cash dividends declared preferred stock											0	[2]	0
Contribution of common stock to U.S. pension plan													0
Stock options and incentive plans, net											0		0
Payments to acquire treasury stock, including fees											(10,000,000)	[3]	(357,000,000)
Cancellation of treasury stock											114,000,000		178,000,000
Distributions to noncontrolling interests											0		0
Ending Balance	0						(303,000,000)				0		(303,000,000)
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			7,991,000,000						7,046,000,000		7,991,000,000		7,046,000,000
Comprehensive income (loss), net, attributable to parent											567,000,000		578,000,000
Cash dividends declared -common stock											(146,000,000)	[1]	(116,000,000)	[1]
Cash dividends declared preferred stock											(12,000,000)	[2]	(12,000,000)	[2]
Contribution of common stock to U.S. pension plan													0
Stock options and incentive plans, net											0		0
Payments to acquire treasury stock, including fees											0		0
Cancellation of treasury stock											0		0
Distributions to noncontrolling interests											0		0
Ending Balance	8,400,000,000						7,496,000,000				8,400,000,000		7,496,000,000
AOCL [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			(3,227,000,000)	[4]					(2,716,000,000)	[4]	(3,227,000,000)	[4]	(2,716,000,000)	[4]
Comprehensive income (loss), net, attributable to parent											(295,000,000)	[4]	(162,000,000)	[4]
Cash dividends declared -common stock											0	[1],[4]	0
Cash dividends declared preferred stock											0	[2],[4]	0
Contribution of common stock to U.S. pension plan													0
Stock options and incentive plans, net											0		0
Payments to acquire treasury stock, including fees											0	[4]	0	[4]
Cancellation of treasury stock											0	[4]	0	[4]
Distributions to noncontrolling interests											0	[4]	0
Ending Balance	(3,522,000,000)	[4]					(2,878,000,000)	[4]			(3,522,000,000)	[4]	(2,878,000,000)	[4]
Non-controlling Interests [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interests, Beginning Balance			143,000,000						149,000,000		143,000,000		149,000,000
Comprehensive income, net, attributable to noncontrolling interest											10,000,000		14,000,000
Cash dividends declared -common stock											0	[1]	0
Cash dividends declared preferred stock											0	[2]	0
Contribution of common stock to U.S. pension plan													0
Stock options and incentive plans, net											0		0
Payments to acquire treasury stock, including fees											0		0
Cancellation of treasury stock											0		0
Distributions to noncontrolling interests											(4,000,000)		(27,000,000)
Noncontrolling interests, Ending Balance	$ 149,000,000						$ 136,000,000				$ 149,000,000		$ 136,000,000

[1] (2)Cash dividends declared on common stock of $0.0575 per share in all quarters of 2013 and $0.0425 per share in all quarters of 2012.

[2] (3)Cash dividends declared on preferred stock of $20.00 per share in all quarters of 2013 and 2012.

[3] (1)Includes associated fees.

[4] (1)Refer to Note 16 - Other Comprehensive Income for components of AOCL.