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Intangible Assets (Details) - Schedule of changes in intangible assets $ in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2020 CLP ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CLP ($) | Dec. 31, 2018 CLP ($)
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Intangible assets and goodwill at beginning of period |  | $ 91,717 |  |  |
Amortization for the year |  | 15,865 |  | $ 12,875 | $ 10,496
Intangible assets and goodwill at end of period |  | 94,111 | $ 132,197 | 91,717 |
Net balance |  | 94,111 |  | 91,717 |
Goodwill [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Net balance | [1] | 16,714 |  | 16,714 |
Intangible assets arising from business combinations [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Net balance | [2] | 16,696 |  | 16,696 |
Software or computer programs [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Net balance |  | 60,701 |  | 58,307 |
Gross Balance [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Intangible assets and goodwill at beginning of period |  | 236,474 |  | 217,931 |
Acquisitions |  | 18,631 |  | 20,928 |
Disposals/write-downs |  | (387) |  | (1,759) |
Reclassification |  | (16) |  | (276) |
Impairment | [3] | (1,044) |  | (350) |
Intangible assets and goodwill at end of period |  | 253,658 |  | 236,474 | 217,931
Gross Balance [Member] | Goodwill [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Intangible assets and goodwill at beginning of period | [1] | 16,714 |  | 16,714 |
Acquisitions | [1] |  |  |  |
Disposals/write-downs | [1] |  |  |  |
Reclassification | [1] |  |  |  |
Impairment | [1],[3] |  |  |  |
Intangible assets and goodwill at end of period | [1] | 16,714 |  | 16,714 | 16,714
Gross Balance [Member] | Intangible assets arising from business combinations [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Intangible assets and goodwill at beginning of period | [2] | 56,249 |  | 56,249 |
Acquisitions | [2] |  |  |  |
Disposals/write-downs | [2] |  |  |  |
Reclassification | [2] |  |  |  |
Impairment | [2],[3] |  |  |  |
Intangible assets and goodwill at end of period | [2] | 56,249 |  | 56,249 | 56,249
Gross Balance [Member] | Software or computer programs [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Intangible assets and goodwill at beginning of period |  | 163,511 |  | 144,968 |
Acquisitions |  | 18,631 |  | 20,928 |
Disposals/write-downs |  | (387) |  | (1,759) |
Reclassification |  | (16) |  | (276) |
Impairment | [3] | (1,044) |  | (350) |
Intangible assets and goodwill at end of period |  | 180,695 |  | 163,511 | 144,968
Accumulated Amortization [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Intangible assets and goodwill at beginning of period |  | (144,757) |  | (132,460) |
Amortization for the year |  | (15,865) |  | (12,875) |
Disposals/write-downs |  | 660 |  | 316 |
Reclassification |  |  |  | 262 |
Impairment | [3] | 415 |  |  |
Intangible assets and goodwill at end of period |  | (159,547) |  | (144,757) | (132,460)
Accumulated Amortization [Member] | Goodwill [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Intangible assets and goodwill at beginning of period | [1] |  |  |  |
Amortization for the year | [1] |  |  |  |
Disposals/write-downs | [1] |  |  |  |
Reclassification | [1] |  |  |  |
Impairment | [1],[3] |  |  |  |
Intangible assets and goodwill at end of period | [1] |  |  |  |
Accumulated Amortization [Member] | Intangible assets arising from business combinations [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Intangible assets and goodwill at beginning of period | [2] | (39,553) |  | (39,553) |
Amortization for the year | [2] |  |  |  |
Disposals/write-downs | [2] |  |  |  |
Reclassification | [2] |  |  |  |
Impairment | [2],[3] |  |  |  |
Intangible assets and goodwill at end of period | [2] | (39,553) |  | (39,553) | (39,553)
Accumulated Amortization [Member] | Software or computer programs [Member] |  |  |  |  |
Intangible Assets (Details) - Schedule of changes in intangible assets [Line Items] |  |  |  |  |
Intangible assets and goodwill at beginning of period |  | (105,204) |  | (92,907) |
Amortization for the year |  | (15,865) |  | (12,875) |
Disposals/write-downs |  | 660 |  | 316 |
Reclassification |  |  |  | 262 |
Impairment | [3] | 415 |  |  |
Intangible assets and goodwill at end of period |  | $ (119,994) |  | $ (105,204) | $ (92,907)
[1] | Goodwill corresponds mainly to business combination with Citibank Chile whose amount is of MCh$12,576 that represents the value of synergies to be generated in the combination process and the acquisition of know-how.
[2] | Intangible assets arising from business combinations include assets with indefinite useful lives acquired in the business combination with Citibank Chile.
[3] | See Note No. 36 Depreciation, Amortization and Impairment.

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