Segment Information (Narrative) (Details) - Television Segment - US	3 Months Ended
	Sep. 30, 2020 Fullpowertvstation Duopoly
Segment Reporting Information [Line Items]
Full power broadcast television stations	29
Duopolies | Duopoly	11
FOX Network
Segment Reporting Information [Line Items]
Full power broadcast television stations	18
MyNetworkTV
Segment Reporting Information [Line Items]
Full power broadcast television stations	10
Independent Station
Segment Reporting Information [Line Items]
Full power broadcast television stations	1