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Note 10: Credit Quality of Long-term Receivables (Tables)
6 Months Ended
Jun. 30, 2012
Notes to Condensed Consolidated Financial Statements [Abstract]  
Allowance for Credit Losses on Financing Receivables [Table Text Block]
(Dollars in millions) 2012 2011
Beginning balance of the reserve for credit losses and exposure as of January 1 $ 70 $ 42
Provision   1   1
Charge-offs   -   -
Recoveries   (1)   (8)
Other   (4)   -
Ending balance of the reserve for credit losses and exposure: individually evaluated for impairment as of June 30 $ 66 $ 35
Ending balance of long-term receivables: individually evaluated for impairment as of June 30 $ 739 $ 595
            
Financing Receivable Credit Quality Indicators [Table Text Block]
(Dollars in millions) June 30, 2012 December 31, 2011
Long-term trade accounts receivable $ 200 $ 204
Notes and leases receivable   539   365
Total long-term receivables $ 739 $ 569
            

    June 30, 2012 December 31, 2011
(Dollars in millions) Long-term trade accounts receivable Notes and leases receivable Long-term trade accounts receivable Notes and leases receivable
A - (low risk, collateralized/uncollateralized) $ 196 $ 24 $ 201 $ -
B - (moderate risk, collateralized/uncollateralized)   4   427   3   295
C - (high risk, collateralized/uncollateralized)   -   81   -   70
D - (in default, uncollateralized)   -   7   -   -
 Total $ 200 $ 539 $ 204 $ 365