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Variable interest entities - Additional Information (Detail) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Total assets $ 16,958,845 $ 16,928,252
Total liabilities and noncontrolling interests 14,329,226 $ 14,703,452
Variable Interest Entity    
Total assets 297,355  
Total liabilities and noncontrolling interests $ 165,916