v3.3.1.900
Income Taxes Deferred Tax Assets, Balance Sheet Location (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Deferred Tax Asset, Balance Sheet Location [Line Items]    
Deferred Tax Assets, Net   $ 233
Deferred Tax Liabilities, Net $ (14)  
Current Assets    
Deferred Tax Asset, Balance Sheet Location [Line Items]    
Deferred Tax Assets, Net 0 171
Current Liabilities    
Deferred Tax Asset, Balance Sheet Location [Line Items]    
Deferred Tax Assets, Net 0  
Deferred Tax Liabilities, Net   (8)
Noncurrent Assets    
Deferred Tax Asset, Balance Sheet Location [Line Items]    
Deferred Tax Assets, Net 238 232
Noncurrent Liabilities    
Deferred Tax Asset, Balance Sheet Location [Line Items]    
Deferred Tax Liabilities, Net $ (252) $ (162)