Broadcast Licenses, Goodwill and Other Intangible Assets (Schedule of certain key estimates and assumptions used in impairment test) (Details)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Discount rates
Impairment measurement input	10.0	9.5
Discount rates | Minimum
Impairment measurement input			12.3
Discount rates | Maximum
Impairment measurement input			12.6
Operating profit margin ranges | Minimum
Impairment measurement input	17.8		17.8
Operating profit margin ranges | Maximum
Impairment measurement input	36.4	36.4	36.4
Market long-term revenue growth rates | Minimum
Impairment measurement input	1.0	1.0	0.2
Market long-term revenue growth rates | Maximum
Impairment measurement input	2.0	2.0	2.6