Broadcast Licenses, Goodwill and Other Intangible Assets (Details)	9 Months Ended
	Sep. 30, 2021
Customer relationships [Member]
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum [Member] | Favorable lease agreements [Member]
Finite-Lived Intangible Asset, Useful Life	26 years
Maximum [Member] | Other Intangible [Member]
Finite-Lived Intangible Asset, Useful Life	15 years
Minimum [Member] | Favorable lease agreements [Member]
Finite-Lived Intangible Asset, Useful Life	5 years
Minimum [Member] | Other Intangible [Member]
Finite-Lived Intangible Asset, Useful Life	1 year