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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, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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 | $ 1,588,588 | $ 1,178,676 | $ 1,040,914
Liabilities | 1,264,340 | 883,096 | 763,830
Capital | 284,938 | 280,158 | 269,657
Net income | 39,310 | 15,422 | 7,427
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 | 92,541 | 88,492 | 79,936
Liabilities | 13,093 | 13,388 | 10,777
Capital | 71,121 | 69,129 | 70,554
Net income | 8,327 | 1,975 | (1,395)
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 | 321,411 | 98,496 | 94,802
Liabilities | 270,952 | 51,649 | 49,038
Capital | 46,863 | 45,396 | 45,053
Net income | 3,596 | 1,451 | 711
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 | 60,640 | 54,731 | 52,070
Liabilities | 2,725 | 1,683 | 1,142
Capital | 53,082 | 50,900 | 51,454
Net income | 4,833 | 2,148 | (526)
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 | 1,107 | 810 | 630
Liabilities | 398 | 463 | 175
Capital | 857 | 455 | 547
Net income | (148) | (108) | (92)
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 | 2,153 | 3,952 | 6,415
Liabilities | 1,440 | 681 | 599
Capital | 3,272 | 5,816 | 7,579
Net income | (2,559) | (2,545) | (1,763)
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 | 884,701 | 742,700 | 693,992
Liabilities | 784,146 | 662,945 | 633,177
Capital | 79,755 | 60,588 | 49,348
Net income | 20,800 | 19,167 | 11,467
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 | 8,037 | 6,636 | 7,789
Liabilities | 1,049 | 1,816 | 3,108
Capital | 4,820 | 4,681 | 4,808
Net income | 2,168 | 139 | (127)
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 | 213,661 | 103,927 | 84,496
Liabilities | 189,411 | 82,917 | 64,582
Capital | 21,011 | 19,914 | 19,565
Net income | 3,239 | 1,096 | 349
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 | 4,337 | 4,409 | 4,336
Liabilities | 1,126 | 253 | 47
Capital | 4,157 | 1,289 | 4,476
Net income | $ (946) | $ (133) | $ (187)

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