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Mezzanine Equity - Additional Information (Detail) - shares
Jun. 30, 2021
Dec. 31, 2020
Noncontrolling Interest [Member] | Subsidiaries [Member]    
Temporary Equity [Line Items]    
Temporary equity shares issued   142,196,089
Noncontrolling Interest [Member] | Subsidiaries [Member] | Consolidation, Eliminations [Member]    
Temporary Equity [Line Items]    
Temporary equity shares issued   80,340,268
TTP Member [Member]    
Temporary Equity [Line Items]    
Percentage of voting interests acquired 51.00% 51.00%