Segment Information (Narrative) (Details) - Television Segment - US	6 Months Ended
	Dec. 31, 2018 Fullpowertvstation Duopoly
Segment Reporting Information [Line Items]
Full power broadcast television stations	28
Duopolies | Duopoly	11
FOX Network
Segment Reporting Information [Line Items]
Full power broadcast television stations	17
MyNetworkTV
Segment Reporting Information [Line Items]
Full power broadcast television stations	9
CW Television Network and MyNetworkTV
Segment Reporting Information [Line Items]
Full power broadcast television stations	1
Independent Station
Segment Reporting Information [Line Items]
Full power broadcast television stations	1