Segment Information - Narrative (Details) - Local Media	Jun. 30, 2020 affiliate low_power_station station
Segment Reporting Information [Line Items]
Number Of Local Broadcast Stations | station	60
Number of low power stations operated | low_power_station	9
ABC affiliates
Segment Reporting Information [Line Items]
Number of affiliates	18
NBC affiliates
Segment Reporting Information [Line Items]
Number of affiliates	11
CBS affiliates
Segment Reporting Information [Line Items]
Number of affiliates	9
FOX affiliates
Segment Reporting Information [Line Items]
Number of affiliates	4
CW affiliates
Segment Reporting Information [Line Items]
Number of affiliates	13
Number Of Full Power Stations | station	5
Number Of Multicast | station	8
My TV Affiliates
Segment Reporting Information [Line Items]
Number of affiliates	2
Independent station
Segment Reporting Information [Line Items]
Number of affiliates	2