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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
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | $ 1,372,684 | $ 1,588,588 | $ 1,100,153
Liabilities | 1,138,470 | 1,264,340 | 815,795
Capital | 199,121 | 284,938 | 261,168
Net income | 35,093 | 39,310 | 23,190
Santander Corredora de Seguros Limitada [Member] |  |  |
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | 31,758 | 92,541 | 88,492
Liabilities | 13,895 | 13,093 | 13,388
Capital | 9,576 | 71,121 | 69,129
Net income | 8,287 | 8,327 | 1,975
Santander Corredores de Bolsa Limitada [Member] |  |  |
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | 99,325 | 321,411 | 98,496
Liabilities | 43,087 | 270,952 | 51,649
Capital | 52,054 | 46,863 | 45,396
Net income | 4,184 | 3,596 | 1,451
Santander Asesorias Financieras Limitada [Member] |  |  |
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | 5,023 | 60,640 | 54,731
Liabilities | 1,442 | 2,725 | 1,683
Capital | 354 | 53,082 | 50,900
Net income | 3,227 | 4,833 | 2,148
Santander S.A. Sociedad Securitizadora [Member] |  |  |
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | 879 | 1,107 | 810
Liabilities | 345 | 398 | 463
Capital | 709 | 857 | 455
Net income | (175) | (148) | (108)
Klare Corredora de Seguros S.A. [Member] |  |  |
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | 1,891 | 2,153 | 3,952
Liabilities | 3,610 | 1,440 | 681
Capital | 713 | 3,272 | 5,816
Net income | (2,432) | (2,559) | (2,545)
Santander Consumer Chile S.A. [Member] |  |  |
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | 923,790 | 884,701 | 742,700
Liabilities | 806,607 | 784,146 | 662,945
Capital | 100,555 | 79,755 | 60,588
Net income | 16,628 | 20,800 | 19,167
Santander Gestión de Recaudación y Cobranzas Ltda. [Member] |  |  |
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | 11,273 | 8,037 | 6,636
Liabilities | 2,755 | 1,049 | 1,816
Capital | 6,988 | 4,820 | 4,681
Net income | 1,530 | 2,168 | 139
Bansa Santander S.A. [Member] |  |  |
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | 292,937 | 213,661 | 103,927
Liabilities | 264,601 | 189,411 | 82,917
Capital | 24,249 | 21,011 | 19,914
Net income | 4,087 | 3,239 | 1,096
Multiplica Spa [Member] |  |  |
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | 3,518 | 4,337 | 4,409
Liabilities | 989 | 1,126 | 253
Capital | 3,211 | 4,157 | 4,289
Net income | (682) | (946) | (133)
PagoNXT Trade Chile SpA [Member] |  |  |
Non-Controlling Interest (Details) - Schedule of Financial Information of the Subsidiaries Included in the Consolidation of the Bank that Possess Non-Controlling Interests [Line Items] |  |  |
Assets | 2,290 |  |
Liabilities | 1,139 |  |
Capital | 712 |  |
Net income | $ 439 |  |

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