Annual report pursuant to Section 13 and 15(d)

Television Distribution Rights, Net (Details)

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Television Distribution Rights, Net (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]      
Television distribution rights, net $ 78 $ 183  
Percentage of Net Sales 5.00%    
Television distribution rights      
Finite-Lived Intangible Assets [Line Items]      
Television distribution rights $ 730 2,279  
Less accumulated amortization (652) (2,096)  
Television distribution rights, net $ 78 183  
Acquired finite-lived intangible assets, weighted average useful life 2 years 11 months    
Amortization $ 157 193 $ 189
Commission Expense $ 298 $ 298 $ 293