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Note 8. Short And Long-Term Debt Loss on the Early Extinguishment of Debt and Write-Off of Deferred Financing Costs (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Debt Disclosure [Abstract]        
Loss on the early extinguishment of debt $ 48 $ 0 $ 48 $ 47
Write off of Deferred Debt Issuance Cost       $ 3