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Commitments and Contingencies (Details)
$ in Millions
1 Months Ended 12 Months Ended
Feb. 08, 2017
USD ($)
Feb. 29, 2012
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 28, 2014
USD ($)
Mar. 01, 2017
radio_station
station
Loss Contingencies [Line Items]            
Contractual commitments, broadcast rights     $ 1,200 $ 999    
Net lease expense from continuing operations     24 $ 23 $ 21  
Commitments related to purchase of technology services, news and market data services, and talent contracts     $ 358      
FCC Regulation, television and radio broadcast station license terms, years     8 years      
FCC Regulation, television ownership cap, percent     39.00%      
The UHF Discount, percent     50.00%      
FCC Regulation, television ownership cap, national reach, percent     39.00%      
FCC Regulation, maximum reimbursement amount for required product modifications   $ 1,750        
Subsequent Event            
Loss Contingencies [Line Items]            
FCC Regulation, number of television stations authorized | station           39
FCC Regulation, number of radio stations authorized | radio_station           1
Expected Proceeds from Reverse Auction $ 190          
Gracenote Companies            
Loss Contingencies [Line Items]            
Commitments related to purchase of technology services, news and market data services, and talent contracts     $ 5