XML 139 R91.htm IDEA: XBRL DOCUMENT v3.8.0.1
Income Taxes (Details - Deferred Taxes and Valuation Allowance) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Deferred Taxes and Valuation Allowance Text [Line Items]        
Deferred tax asset related to net operating losses $ 349 $ 676    
Undistributed earnings of foreign subsidiaries 0      
Valuation allowance (23) (35) $ (82) $ (91)
Valuation allowance, deferred tax asset, increase (decrease), amount (12) (47)    
Income tax expense (benefit) due to change in tax status 25      
Deferred tax assets:        
Deferred tax asset related to net operating losses 349 676    
Reserves and allowances, net 155 335    
Mark to market 35 160    
Deferred compensation 34 43    
Tax credits 68 55    
Basis differences in investments 8 14    
Other 10 26    
Total deferred tax assets 659 1,309    
Valuation allowance (23) (35) $ (82) $ (91)
Total deferred tax assets, net of valuation allowance 636 1,274    
Deferred tax liabilities:        
Depreciation and amortization (385) (518)    
Total deferred tax liabilities (385) (518)    
Net deferred tax asset 251 $ 756    
Federal Jurisdiction [Member]        
Deferred Taxes and Valuation Allowance Text [Line Items]        
Operating Loss Carryforwards 1,000      
Deferred tax asset related to net operating losses 211      
Valuation allowance recorded against net operating losses 0      
Deferred tax assets:        
Deferred tax asset related to net operating losses 211      
State and Local Jurisdiction        
Deferred Taxes and Valuation Allowance Text [Line Items]        
Operating Loss Carryforwards 2,800      
Deferred tax asset related to net operating losses 135      
Valuation allowance recorded against net operating losses 20      
Deferred tax assets:        
Deferred tax asset related to net operating losses $ 135      
Earliest Tax Year | State and Local Jurisdiction        
Deferred Taxes and Valuation Allowance Text [Line Items]        
Operating loss carryforwards, expiration date Jan. 01, 2018      
Latest Tax Year | State and Local Jurisdiction        
Deferred Taxes and Valuation Allowance Text [Line Items]        
Operating loss carryforwards, expiration date Dec. 31, 2036