XML 69 R58.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 11. Income Taxes Details (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Sep. 30, 2017
Income Tax Disclosure [Abstract]      
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense $ 191    
Effective Income Tax Rate Reconciliation, Percent 0.00% 0.00%  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 10.00%   0.00%
Unrecognized Tax Benefits, Interest on Income Taxes Expense $ 3    
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent 0.00%    
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount $ 150    
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount 100    
Other Tax Expense (Benefit) 8    
Current Income Tax Expense (Benefit) $ 258    
Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Percent   0.00%  
Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Amount   $ 5