Broadcast Licenses, Goodwill and Other Intangible Assets (Schedule of certain key estimates and assumptions used in impairment test) (Details)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Discount Rate
Impairment measurement input	9.5
Discount Rate | Minimum
Impairment measurement input		12.3	12.6
Discount Rate | Maximum
Impairment measurement input		12.6	13.0
Operating Profit Margin | Minimum
Impairment measurement input	17.8	17.8	17.8
Operating Profit Margin | Maximum
Impairment measurement input	36.4	36.4	36.4
Long-term Revenue Growth Rate | Minimum
Impairment measurement input	1.0	0.2	0.2
Long-term Revenue Growth Rate | Maximum
Impairment measurement input	2.0	2.6	2.9