Variable interest entities - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Total assets	$ 17,430,935	$ 16,893,578
Total liabilities and noncontrolling interests	14,794,948	$ 14,150,228
Variable Interest Entity
Total assets	293,733
Total liabilities and noncontrolling interests	$ 139,024