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Retail Credit Facilitation Service Fees - Summary of Retail Credit Facilitation Service Fees (Detail) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of retail credit facilitation service fees [line items]      
Retail credit facilitation service fees ¥ 36,086,974 ¥ 39,456,904 ¥ 39,324,848
Loan facilitation service [member]      
Disclosure of retail credit facilitation service fees [line items]      
Retail credit facilitation service fees 5,675,612 7,141,725 9,716,401
Post origination service [member]      
Disclosure of retail credit facilitation service fees [line items]      
Retail credit facilitation service fees ¥ 30,411,362 ¥ 32,315,179 ¥ 29,608,447