Variable interest entities - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Total assets	$ 16,727,787	$ 16,928,252
Total liabilities and noncontrolling interests	14,309,085	$ 14,703,452
Variable Interest Entity
Total assets	308,455
Total liabilities and noncontrolling interests	$ 178,382