Quarterly report pursuant to Section 13 or 15(d)

Goodwill - Fair Value Measurement Inputs and Valuation Techniques For Goodwill (Detail)

v3.23.2
Goodwill - Fair Value Measurement Inputs and Valuation Techniques For Goodwill (Detail) - Broadcast Networks Enterprise Valuations [Member]
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 10.5 10.5
Measurement Input, Long-term Revenue Growth Rate [Member] | Radio Clusters [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Intangible asset measurement input percentage 0.6 0.6
Minimum [Member] | Measurement Input Operating Profit Margin [Member] | Radio Clusters [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Intangible asset measurement input percentage 1.5 0.9
Maximum [Member] | Measurement Input Operating Profit Margin [Member] | Radio Clusters [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Intangible asset measurement input percentage 3 5.3