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ACQUISITIONS AND DISPOSITIONS OF ASSETS (Details)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2021
USD ($)
Feb. 28, 2021
USD ($)
business
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
station
Jun. 30, 2020
USD ($)
Business Acquisition [Line Items]            
Number of businesses sold | business   2        
Gain on sale of assets     $ 8 $ 28 $ 22 $ 60
Number of stations assigned new channels | station         100  
Broadcast incentive auction, total legislation funds to reimburse stations         $ 3,000  
Broadcast incentive auction, gain recognized on sale     4 29 18 52
Broadcast incentive auction, total capital expenditure     4 $ 19 9 $ 41
WDKA and KBSI Assets | Disposal Group, Disposed of by Sale, Not Discontinued Operations            
Business Acquisition [Line Items]            
Aggregate purchase price received on disposition   $ 28        
Gain on sale of assets         12  
Triangle Sign and Service, LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations            
Business Acquisition [Line Items]            
Aggregate purchase price received on disposition $ 12   $ 12   $ 12  
Gain on sale of assets 6          
Gain on sale attributable to noncontrolling interest $ 3          
Zyp Media            
Business Acquisition [Line Items]            
Payment in cash   $ 7