Note 7: Employee Benefit Plans (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions to Defined Benefit Plans	$ 11,000,000	$ 41,000,000	$ 24,000,000	$ 70,000,000
Contributions to Defined Contribution Plans	56,000,000	56,000,000	118,000,000	113,000,000
Defined Benefit Plan, Service Cost	115,000,000	111,000,000	230,000,000	222,000,000
Defined Benefit Plan, Interest Cost	313,000,000	326,000,000	626,000,000	650,000,000
Defined Benefit Plan, Expected Return on Plan Assets	(456,000,000)	(458,000,000)	(912,000,000)	(914,000,000)
Defined Benefit Plan, Amortization of Transition Obligations, Assets and Prior Service Cost Credit	(3,000,000)	(3,000,000)	(6,000,000)	(6,000,000)
Defined Benefit Plan, Actuarial Net (Gains) Losses	180,000,000	116,000,000	361,000,000	231,000,000
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	7,000,000	13,000,000	35,000,000	13,000,000
Defined Benefit Plan, Net Periodic Benefit Cost	156,000,000	105,000,000	334,000,000	196,000,000
Discontinued Operations Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments	3,000,000		24,000,000
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	1,000,000	1,000,000	2,000,000	2,000,000
Defined Benefit Plan, Interest Cost	8,000,000	10,000,000	16,000,000	20,000,000
Defined Benefit Plan, Expected Return on Plan Assets	0	0	0	0
Defined Benefit Plan, Amortization of Transition Obligations, Assets and Prior Service Cost Credit	0	(1,000,000)	0	(2,000,000)
Defined Benefit Plan, Actuarial Net (Gains) Losses	(2,000,000)	(2,000,000)	(4,000,000)	(4,000,000)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	0	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost	7,000,000	8,000,000	14,000,000	16,000,000
United States Pension Plans Of US Entity Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions to Defined Benefit Plans			$ 0	$ 0