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Net Interest Income - Summary of Net Interest Income (Detail) - CNY (¥)
¥ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of net interest income [line items]      
Interest income ¥ 820,843 ¥ 364,385 ¥ 463,396
Total net interest income 14,174,231 7,750,460 3,909,196
Loans originated by consolidated trust plans [member]      
Disclosure of net interest income [line items]      
Interest income 21,229,806 10,640,860 2,030,485
Interest expense (8,400,992) (4,283,151) (964,790)
Total net interest income 12,828,814 6,357,709 1,065,695
Loans originated by microloan lending companies and consumer finance company [member]      
Disclosure of net interest income [line items]      
Interest income 1,535,023 1,395,961 2,895,600
Interest expense (189,606) (3,210) (52,099)
Total net interest income ¥ 1,345,417 ¥ 1,392,751 ¥ 2,843,501