Summary of Significant Accounting Policies (Intangible Assets and Goodwill) (Details)	12 Months Ended
	Jun. 30, 2019 reporting_unit
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
Number of reporting units	2
FCC licenses
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
Maximum term of FCC broadcast licenses (in years)	8 years
Minimum | Network
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
Amortizable intangible assets estimated useful lives (in years)	25 years
Minimum | Finite-lived intangible assets, excluding network affiliation agreements
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
Amortizable intangible assets estimated useful lives (in years)	1 year
Maximum | Network
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
Amortizable intangible assets estimated useful lives (in years)	40 years
Maximum | Finite-lived intangible assets, excluding network affiliation agreements
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
Amortizable intangible assets estimated useful lives (in years)	10 years