Quarterly report pursuant to Section 13 or 15(d)

Broadcast Licenses - Fair Value Measurement Inputs and Valuation Techniques for Broadcast Licenses (Detail)

v3.23.3
Broadcast Licenses - Fair Value Measurement Inputs and Valuation Techniques for Broadcast Licenses (Detail) - Broadcast Licenses [Member]
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Measurement Input, Risk-adjusted Discount Rate [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Intangible asset measurement input percentage 10 9.5 9.5
Measurement Input, Long-term Revenue Growth Rate [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Intangible asset measurement input percentage 0    
Minimum [Member] | Measurement Input, Operating Profit Margin [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Intangible asset measurement input percentage 3.9 3.9 3.9
Minimum [Member] | Measurement Input, Long-term Revenue Growth Rate [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Intangible asset measurement input percentage   0.4 0.4
Maximum [Member] | Measurement Input, Operating Profit Margin [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Intangible asset measurement input percentage 30.4 30.4 30.4
Maximum [Member] | Measurement Input, Long-term Revenue Growth Rate [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Intangible asset measurement input percentage   0.8 0.8