v3.25.4
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests - CLP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets $ 1,304,198 $ 1,207,129 $ 1,372,684
Liabilities 1,031,785 974,720 1,138,470
Capital 232,742 208,829 199,121
Net income 39,671 23,580 35,093
Santander Corredora de Seguros Limitada      
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets 34,421 32,876 31,758
Liabilities 11,775 12,878 13,895
Capital 19,994 17,861 9,576
Net income 2,652 2,137 8,287
Santander Corredores de Bolsa Limitada      
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets 179,219 92,155 99,325
Liabilities 114,418 31,758 43,087
Capital 61,230 56,243 52,054
Net income 3,571 4,154 4,184
Santander Asesorias Financieras Limitada      
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets 17,770 15,295 5,023
Liabilities 1,241 3,205 1,442
Capital 12,086 3,582 354
Net income 4,443 8,508 3,227
Santander S.A. Sociedad Securitizadora      
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets 1,327 722 879
Liabilities 325 326 345
Capital 1,170 534 709
Net income (168) (138) (175)
Klare Corredora de Seguros S.A.      
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets 0 0 1,891
Liabilities 0 0 3,610
Capital 0 1,955 713
Net income 0 (1,955) (2,432)
Santander Consumer Chile S.A.      
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets 1,056,093 1,049,387 923,790
Liabilities 900,277 922,136 806,607
Capital 127,251 117,183 100,555
Net income 28,565 10,068 16,628
Santander Gestión de Recaudación y Cobranzas Ltda.      
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets 12,451 11,429 11,273
Liabilities 2,901 2,443 2,755
Capital 8,986 8,518 6,988
Net income 564 468 1,530
Bansa Santander S.A.      
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets 0 0 292,937
Liabilities 0 0 264,601
Capital 0 (727) 24,249
Net income 0 727 4,087
Multiplica Spa      
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets 2,917 2,883 3,518
Liabilities 848 857 989
Capital 2,025 2,529 3,211
Net income 44 (503) (682)
PagoNXT Payments Chile SpA      
Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items]      
Assets 0 2,382 2,290
Liabilities 0 1,117 1,139
Capital 0 1,151 712
Net income $ 0 $ 114 $ 439