v3.26.1
Financial risk management - Financial risk factors - Gross carrying amount and loss allowance (Details) - CNY (¥)
¥ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Credit risk      
Carrying amount at beginning ¥ 83,047,834 ¥ 83,613,004  
Carrying amount at end 92,996,175 83,047,834 ¥ 83,613,004
Gross carrying amount | Loans receivable      
Credit risk      
Carrying amount at beginning 12,591,317 9,829,675 5,798,839
Net (increases) decreases 4,657,985 5,074,421 4,885,856
Write - offs (3,195,994) (1,565,290) (945,311)
Currency translation differences 691,523 (747,489) 90,291
Carrying amount at end 14,744,831 12,591,317 9,829,675
Gross carrying amount | Not credit impaired | 12-month basis | Loans receivable      
Credit risk      
Carrying amount at beginning 11,446,716 9,287,244 5,551,986
Transfer from Stage 1 to Stage 2 (635,900) (467,517) (322,405)
Transfer from Stage 1 to Stage 3 (3,487,616) (2,101,393) (930,149)
Transfer from Stage 2 to Stage 1 2,366 2,655 25
Transfer from Stage 3 to Stage 1 4,407    
Net (increases) decreases 4,991,642 5,354,258 4,902,917
Currency translation differences 496,297 (628,531) 84,870
Carrying amount at end 12,817,912 11,446,716 9,287,244
Gross carrying amount | Not credit impaired | Lifetime basis | Loans receivable      
Credit risk      
Carrying amount at beginning 361,069 337,933 138,373
Transfer from Stage 1 to Stage 2 635,900 467,517 322,405
Transfer from Stage 2 to Stage 1 (2,366) (2,655) (25)
Transfer from Stage 2 to Stage 3 (209,201) (348,198) (121,231)
Transfer from Stage 3 to Stage 2 146    
Net (increases) decreases (201,313) (61,297) (6,344)
Currency translation differences 27,753 (32,231) 4,755
Carrying amount at end 611,988 361,069 337,933
Gross carrying amount | Credit impaired | Lifetime basis | Loans receivable      
Credit risk      
Carrying amount at beginning 783,532 204,498 108,480
Transfer from Stage 1 to Stage 3 3,487,616 2,101,393 930,149
Transfer from Stage 2 to Stage 3 209,201 348,198 121,231
Transfer from Stage 3 to Stage 2 (146)    
Transfer from Stage 3 to Stage 1 (4,407)    
Net (increases) decreases (132,344) (218,540) (10,717)
Write - offs (3,195,994) (1,565,290) (945,311)
Currency translation differences 167,473 (86,727) 666
Carrying amount at end 1,314,931 783,532 204,498
Allowance for credit losses | Loans receivable      
Credit risk      
Carrying amount at beginning (2,044,491) (1,149,945) (460,212)
Net (increases) decreases (3,955,795) (2,670,525) (1,538,470)
Write - offs 3,195,994 1,565,290 945,311
Changes in ECL measurement (232,839) (32,863) (71,201)
Currency translation differences (233,446) 243,552 (25,373)
Carrying amount at end (3,270,577) (2,044,491) (1,149,945)
Allowance for credit losses | Not credit impaired | 12-month basis      
Credit risk      
Transfer from Stage 2 to Stage 1     (16)
Allowance for credit losses | Not credit impaired | 12-month basis | Loans receivable      
Credit risk      
Carrying amount at beginning (1,064,705) (700,838) (252,350)
Transfer from Stage 1 to Stage 2 91,873 52,760 15,201
Transfer from Stage 1 to Stage 3 539,983 306,068 50,648
Transfer from Stage 2 to Stage 1 (1,725) (1,827)  
Transfer from Stage 3 to Stage 1 (3,903)    
Net (increases) decreases (803,837) (781,584) (427,451)
Changes in ECL measurement (335,957) (51,290) (66,153)
Currency translation differences (75,856) 112,006 (20,717)
Carrying amount at end (1,654,127) (1,064,705) (700,838)
Allowance for credit losses | Not credit impaired | Lifetime basis      
Credit risk      
Transfer from Stage 2 to Stage 1     16
Allowance for credit losses | Not credit impaired | Lifetime basis | Loans receivable      
Credit risk      
Carrying amount at beginning (256,954) (260,248) (112,318)
Transfer from Stage 1 to Stage 2 (91,873) (52,760) (15,201)
Transfer from Stage 2 to Stage 1 1,725 1,827  
Transfer from Stage 2 to Stage 3 126,614 262,730 93,045
Transfer from Stage 3 to Stage 2 (130)    
Net (increases) decreases (216,376) (242,481) (217,500)
Changes in ECL measurement 19,338 10,029 (5,575)
Currency translation differences (15,653) 23,949 (2,715)
Carrying amount at end (433,309) (256,954) (260,248)
Allowance for credit losses | Credit impaired | Lifetime basis | Loans receivable      
Credit risk      
Carrying amount at beginning (722,832) (188,859) (95,544)
Transfer from Stage 1 to Stage 3 (539,983) (306,068) (50,648)
Transfer from Stage 2 to Stage 3 (126,614) (262,730) (93,045)
Transfer from Stage 3 to Stage 2 130    
Transfer from Stage 3 to Stage 1 3,903    
Net (increases) decreases (2,935,582) (1,646,460) (893,519)
Write - offs 3,195,994 1,565,290 945,311
Changes in ECL measurement 83,780 8,398 527
Currency translation differences (141,937) 107,597 (1,941)
Carrying amount at end ¥ (1,183,141) ¥ (722,832) ¥ (188,859)