v3.6.0.2
Income Taxes (Textuals) (Details)
 12 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Intraperiod income tax [Line Items]        
Number of States for NOL Carryforwards 21      
Federal statutory tax expense (benefit) rate 35.00% 35.00% 35.00%  
Income Tax Disclosure (Textuals) [Abstract]        
Unrecognized Tax Benefits $ 59,000,000 $ 58,000,000 $ 56,000,000 $ 68,000,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 19,000,000      
Unrecognized Tax Benefits Resulting in Net Operating Loss Carryforward 40,000,000      
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 12,000,000 12,000,000    
Valuation allowance 1,581,000,000 1,637,000,000    
Valuation Allowance, Deferred Tax Asset, Change in Amount 56,000,000 199,000,000 410,000,000  
Reorganization Valuation Allowance Release Against Net Operating Losses 69,000,000      
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense 0 $ 1,000,000 $ (2,000,000)  
Expiration date 2024 through 2033 [Member]        
Intraperiod income tax [Line Items]        
Deferred Tax Assets, Operating Loss Carryforwards, Domestic 6,700,000,000      
Expiration date 2017 through 2036 [Member]        
Income Tax Disclosure (Textuals) [Abstract]        
Deferred Tax Assets, Operating Loss Carryforwards, State and Local 3,700,000,000      
Expiration date 2025 through 2033 [Member]        
Income Tax Disclosure (Textuals) [Abstract]        
Deferred Tax Assets, Operating Loss Carryforwards, Foreign 647,000,000      
Minimum [Member]        
Income Tax Disclosure (Textuals) [Abstract]        
Decrease in Unrecognized Tax Benefits is Reasonably Possible 0      
Maximum [Member]        
Income Tax Disclosure (Textuals) [Abstract]        
Decrease in Unrecognized Tax Benefits is Reasonably Possible $ 17,000,000