v3.26.1
Financial Instruments And Risks- Summary of Liquidity Risk (Detail) - CNY (¥)
¥ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities ¥ 115,949,827 ¥ 111,479,681
Payable to platform investors [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 667,794 721,558
Borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 64,325,559 51,937,587
Customer deposit [Member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 9,519,651 3,963,791
Accounts and other payables and contract liabilities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 3,138,181 2,833,692
Payable to investors of consolidated structured entities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 29,432,249 43,789,210
Lease liabilities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 273,094 311,234
Convertible promissory notes payable [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 6,930,860 7,140,026
Financial assets sold under repurchase agreements [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 1,662,439 782,583
Financing guarantee contracts [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 67,470,208 68,017,023
Repayable on demand [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 3,868,100 2,753,164
Repayable on demand [member] | Payable to platform investors [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 667,794 721,558
Repayable on demand [member] | Borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 0 71,938
Repayable on demand [member] | Customer deposit [Member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 427,528 469,093
Repayable on demand [member] | Accounts and other payables and contract liabilities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 2,772,257 1,489,870
Repayable on demand [member] | Payable to investors of consolidated structured entities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities   0
Repayable on demand [member] | Lease liabilities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 521 705
Repayable on demand [member] | Financing guarantee contracts [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 67,470,208 68,017,023
Not later than three months [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 106,208,576 90,582,460
Not later than three months [member] | Borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 62,854,633 49,819,385
Not later than three months [member] | Customer deposit [Member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 9,092,123 3,494,698
Not later than three months [member] | Accounts and other payables and contract liabilities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 365,924 1,343,822
Not later than three months [member] | Payable to investors of consolidated structured entities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 25,148,132 34,900,519
Not later than three months [member] | Lease liabilities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 154,465 189,663
Not later than three months [member] | Convertible promissory notes payable [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 6,930,860 51,790
Not later than three months [member] | Financial assets sold under repurchase agreements [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 1,662,439 782,583
Later than one year and not later than two years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 5,578,419 17,572,240
Later than one year and not later than two years [member] | Borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 1,470,926 2,046,264
Later than one year and not later than two years [member] | Payable to investors of consolidated structured entities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 4,018,598 8,343,092
Later than one year and not later than two years [member] | Lease liabilities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 88,895 94,648
Later than one year and not later than two years [member] | Convertible promissory notes payable [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 0 7,088,236
Later than two years and not later than three years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 292,012 571,579
Later than two years and not later than three years [member] | Borrowings [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 0 0
Later than two years and not later than three years [member] | Customer deposit [Member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 0  
Later than two years and not later than three years [member] | Payable to investors of consolidated structured entities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 265,519 545,599
Later than two years and not later than three years [member] | Lease liabilities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 26,493 25,980
Later than two years and not later than three years [member] | Convertible promissory notes payable [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 0 0
Later than three years and not later than four years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 2,720 238
Later than three years and not later than four years [member] | Payable to investors of consolidated structured entities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities 0 0
Later than three years and not later than four years [member] | Lease liabilities [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Financial liabilities ¥ 2,720 ¥ 238