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Investment Income - Summary of Investment Income (Detail) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Interest income      
Financial assets at amortized cost ¥ 341,617 ¥ 479,043 ¥ 304,627
Financial assets purchased under reverse repurchase agreements 76,737 83,763 29,328
Interest income 418,354 562,806 333,955
Realized gains      
Financial assets at fair value through profit or loss 1,099,568 991,437 1,163,988
Financial assets at amortized cost   80,866  
Realized gains 1,099,568 1,072,303 1,163,988
Net change in unrealized gains/(losses)      
Financial assets at fair value through profit or loss (212,297) (483,356) (558,044)
Investment income ¥ 1,305,625 ¥ 1,151,753 ¥ 939,899