v3.3.1.900
Income Taxes (Textuals) (Details)
 12 Months Ended
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
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 $ 58,000,000 $ 56,000,000 $ 68,000,000 $ 92,000,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 17,000,000      
Unrecognized Tax Benefits Resulting in Net Operating Loss Carryforward 41,000,000      
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 12,000,000 11,000,000    
Valuation allowance 1,637,000,000 [1] 1,836,000,000    
Valuation Allowance, Deferred Tax Asset, Change in Amount 199,000,000 410,000,000 24,000,000  
Reorganization Valuation Allowance Release Against Net Operating Losses 69,000,000      
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense 1,000,000 (2,000,000) $ (11,000,000)  
Federal [Domain]        
Income Tax Disclosure (Textuals) [Abstract]        
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost 46,000,000 37,000,000    
State and Local Jurisdiction [Member]        
Income Tax Disclosure (Textuals) [Abstract]        
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost 25,000,000 $ 21,000,000    
Expiration date 2024 through 2033 [Member]        
Intraperiod income tax [Line Items]        
Deferred Tax Assets, Operating Loss Carryforwards, Domestic 6,900,000,000      
Expiration date 2016 through 2035 [Member]        
Income Tax Disclosure (Textuals) [Abstract]        
Deferred Tax Assets, Operating Loss Carryforwards, State and Local 4,100,000,000      
Expiration date 2026 through 2035 [Member]        
Income Tax Disclosure (Textuals) [Abstract]        
Deferred Tax Assets, Operating Loss Carryforwards, Foreign 655,000,000      
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 $ 1,000,000      
[1] We prospectively early adopted Accounting Standards Update 2015-17 during the fourth quarter of 2015 which requires the presentation of deferred tax assets and liabilities as non-current in our Consolidated Balance Sheet. See Note 2 for further information regarding the adoption of Accounting Standards Update 2015-17.