Note 9: Credit Quality of Long-term Receivables (Tables)
9 Months Ended
Sep. 30, 2011
Notes to Condensed Consolidated Financial Statements [Abstract] 
Allowance For Credit Losses On Financing Receivables [Table Text Block]
(Dollars in millions)  
Beginning balance of the reserve for credit losses and exposure    $ 42
Provision      1
Charge-offs      -
Recoveries      (9)
Other      (2)
Ending balance of the reserve for credit losses and exposure: individually evaluated for impairment   $ 32
Ending balance of long-term receivables: individually evaluated for impairment    $ 598
            
Financing Receivable Credit Quality Indicators [Table Text Block]
(Dollars in millions) September 30, 2011 December 31, 2010
Long-term trade accounts receivable $ 225 $ 198
Notes and leases receivable   373   416
Total long-term receivables $ 598 $ 614
            

    September 30, 2011 December 31, 2010
(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) $ 224 $ - $ 193 $ -
B - (moderate risk, collateralized/uncollateralized)   1   299   5   336
C - (high risk, collateralized/uncollateralized)   -   74   -   80
D - (in default, uncollateralized)   -   -   -   -
 Total $ 225 $ 373 $ 198 $ 416