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Fair Value and Fair Value Hierarchy of Financial Instruments - Summary of Significant Unobservable Inputs to Valuation of Financial Instruments (Detail)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Measurement Input, Price Volatility [Member] | Multiple EVA [Member] | Unlisted Equity Investment E [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Valuation technique Multiple/ EVA Multiple/ EVA  
Significant unobservable input Equity volatility Equity volatility  
Range or estimate 69.60 69.60  
Measurement Input, Price Volatility [Member] | Multiple EVA [Member] | Unlisted Equity Investment H [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Valuation technique     Multiple/ EVA
Significant unobservable input     Equity volatility
Range or estimate     75.29
Measurement Input, Price Volatility [Member] | Multiple EVA [Member] | Unlisted Equity Investment I [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Valuation technique     Multiple/ EVA
Significant unobservable input     Equity volatility
Range or estimate     48.52
Measurement Input, Price Volatility [Member] | Monte Carlo Stimulation Method [Member] | Derivative Financial Instruments, Assets [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Valuation technique   MCS MCS
Significant unobservable input   Volatility of Underlying Assets Volatility of Underlying Assets
Range or estimate   49.78 35.95
Measurement Input, Price Volatility [Member] | Binomial Option Pricing Model [Member] | Derivative Financial Instruments, Liabilities [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Valuation technique     Binomial option pricing model
Significant unobservable input     Volatility
Range or estimate     46.21
Measurement Input, Discount Rate [Member] | Unlisted Equity Investment J [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Significant unobservable input     Discount of lack of marketability
Range or estimate     45
Measurement Input, Discount Rate [Member] | Derivative Financial Instruments, Liabilities [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Significant unobservable input     Discount rate
Range or estimate     12.52
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Movie Income Right Investments [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Valuation technique Income approach Income approach  
Significant unobservable input Discount rate Discount rate  
Net Asset Value Method [Member] | Measurement Input Net Asset Value Method [Member] | Unlisted Equity Investment D [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Valuation technique   Net asset value method Net asset value method
Significant unobservable input   Net asset value Net asset value
Median Forward PE multiple of peers [Member] | Unlisted Equity Investment H [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Significant unobservable input     Median Forward P/E multiple of peers
Range or estimate     2.10
Median Forward PE multiple of peers [Member] | Unlisted Equity Investment I [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Significant unobservable input     Median Forward P/E multiple of peers
Range or estimate     18.97
Average PE multiple of peers [Member] | Multiple EVA [Member] | Unlisted Equity Investment J [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Valuation technique     Multiple/ EVA
Significant unobservable input     Average P/E multiple of peers
Range or estimate     61.29
Minimum [Member] | Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Movie Income Right Investments [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Range or estimate 10.40 10.40  
Maximum [Member] | Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Movie Income Right Investments [Member]      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Range or estimate 12.59 12.59