Note 7: Employee Benefit Plans (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Discontinued Operations Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments	$ (5,000,000)	$ 21,000,000
Business Acquisition Pension And Post Retirement Obligations Assumed	1,500,000,000
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions to Defined Benefit Plans	29,000,000	13,000,000
Contributions to Defined Contribution Plans	103,000,000	62,000,000
Defined Benefit Plan, Service Cost	144,000,000	115,000,000
Defined Benefit Plan, Interest Cost	343,000,000	313,000,000
Defined Benefit Plan, Expected Return on Plan Assets	(527,000,000)	(456,000,000)
Defined Benefit Plan, Amortization of Transition Obligations, Assets and Prior Service Cost Credit	(9,000,000)	(3,000,000)
Defined Benefit Plan, Actuarial Net (Gains) Losses	240,000,000	181,000,000
Defined Benefit Plan, Recognized Net (Gain) Loss Due to Settlements and Curtailments	(3,000,000)	28,000,000
Defined Benefit Plan, Net Periodic Benefit Cost	188,000,000	178,000,000
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	1,000,000	1,000,000
Defined Benefit Plan, Interest Cost	10,000,000	8,000,000
Defined Benefit Plan, Expected Return on Plan Assets	0	0
Defined Benefit Plan, Amortization of Transition Obligations, Assets and Prior Service Cost Credit	(3,000,000)	0
Defined Benefit Plan, Actuarial Net (Gains) Losses	(1,000,000)	(2,000,000)
Defined Benefit Plan, Recognized Net (Gain) Loss Due to Settlements and Curtailments	0	0
Defined Benefit Plan, Net Periodic Benefit Cost	7,000,000	7,000,000
United States Pension Plans Of US Entity Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions to Defined Benefit Plans	$ 0	$ 0