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v3.20.2

Broadcast License, Goodwill and Other Intangible Assets (Schedule of certain key estimates and assumptions used in impairment test) (Details) - USD ($) | Sep. 30, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Measurement Input, Discount Rate [Member] | Minimum [Member] |  |  |
Impairment measurement input | 12.6 | 12.2 | 12.0
Measurement Input, Discount Rate [Member] | Maximum [Member] |  |  |
Impairment measurement input | 13.0 | 12.2 | 12.0
Measurement Input Operating Profit Margin [Member] |  |  |
Impairment measurement input | 36.4 |  |
Measurement Input Operating Profit Margin [Member] | Minimum [Member] |  |  |
Impairment measurement input | 17.8 | 19.0 | 19.0
Measurement Input Operating Profit Margin [Member] | Maximum [Member] |  |  |
Impairment measurement input |  | 36.4 | 36.4
Measurement Input, Long-term Revenue Growth Rate [Member] | Minimum [Member] |  |  |
Impairment measurement input | 0.2 | 0.0 | 0.5
Measurement Input, Long-term Revenue Growth Rate [Member] | Maximum [Member] |  |  |
Impairment measurement input | 2.9 | 2.9 | 2.9

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- Definition Impairment measurement input. + References No definition available. + Details
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- Details
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