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Expense by Nature - Summary of Expenses by Nature (Detail) - CNY (¥)
¥ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Expenses by nature [abstract]      
Employee benefit expenses ¥ 7,700,664 ¥ 11,316,549 ¥ 14,673,394
Loan origination and servicing expenses 2,324,484 3,218,379 4,480,827
Outsourcing service expenses 932,223 1,099,267 1,446,358
Depreciation of right-of-use assets 283,645 427,358 591,201
Taxes and surcharges 208,258 325,539 573,261
Depreciation of property and equipment 104,439 185,222 181,601
Audit fees 68,301 47,521 43,861
Amortization of intangible assets 39,766 11,022 15,325
Others 1,979,948 3,206,198 5,463,419
Total sales and marketing expenses, general and administrative expenses, operation and servicing expenses, technology and analytics expenses ¥ 13,641,728 ¥ 19,837,055 ¥ 27,469,247