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Loans Receivable, Net - Schedule of Breakdown of funds payable to investors of consolidated trusts (Detail) - CNY (¥)
¥ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Institutional funding partners [Member]    
Schedule of Breakdown of funds payable to investors of consolidated trusts [Line Items]    
Investment principal amount ¥ 3,529,785 ¥ 1,493,916
Accrued interest 130,698 11,993
Total 3,660,483 1,505,909
The Group [Member]    
Schedule of Breakdown of funds payable to investors of consolidated trusts [Line Items]    
Investment principal amount 1,316,130 1,093,610
Accrued interest 911,080 208,987
Total ¥ 2,227,210 ¥ 1,302,597