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Property and Equipment and Leased Assets and Lease Liabilities (Details) - Schedule of changes in property and equipment - CLP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Property and Equipment and Leased Assets and Lease Liabilities (Details) - Schedule of changes in property and equipment [Line Items] |  |  |
Beginning Balance, Cost |  | $ 564,743 | $ 557,305
Beginning Balance, Accumulated Depreciation |  | (344,481) | (341,433)
Ending Balance, Accumulated Depreciation |  | (365,545) | (344,481)
Impairment loss | [1],[2] | 12 |
Reclassification, Cost |  |  | (25,691)
Additions, Cost |  | 28,471 | 43,512
Write-down and sales of the year, Cost |  | (9,614) | (9,314)
Impairment loss, Cost | [1],[2] | (127) | (1,069)
Ending Balance, Cost |  | 583,473 | 564,743
Reclassification, Accumulated Depreciation |  |  | 21,315
Depreciation charges of the year, Accumulated Depreciation | [1],[3] | (29,488) | (28,835)
Write-down and sales of the year, Accumulated Depreciation |  | 8,412 | 4,472
Land and Buildings [member] |  |  |
Property and Equipment and Leased Assets and Lease Liabilities (Details) - Schedule of changes in property and equipment [Line Items] |  |  |
Beginning Balance, Cost |  | 301,619 | 320,585
Beginning Balance, Accumulated Depreciation |  | (136,394) | (150,099)
Ending Balance, Accumulated Depreciation |  | (142,543) | (136,394)
Reclassification, Cost |  |  | (25,654)
Additions, Cost |  | 6,303 | 12,555
Write-down and sales of the year, Cost |  | (2,903) | (5,437)
Impairment loss, Cost | [1],[2] | (68) | (430)
Ending Balance, Cost |  | 304,951 | 301,619
Reclassification, Accumulated Depreciation |  |  | 21,278
Depreciation charges of the year, Accumulated Depreciation | [1],[3] | (8,844) | (8,613)
Write-down and sales of the year, Accumulated Depreciation |  | 2,695 | 1,040
Equipment [member] |  |  |
Property and Equipment and Leased Assets and Lease Liabilities (Details) - Schedule of changes in property and equipment [Line Items] |  |  |
Beginning Balance, Cost |  | 207,605 | 183,220
Beginning Balance, Accumulated Depreciation |  | (162,560) | (148,455)
Transfers, Accumulated Depreciation |  |  | (15)
Ending Balance, Accumulated Depreciation |  | (175,141) | (162,560)
Reclassification, Cost |  |  | (37)
Additions, Cost |  | 20,658 | 28,118
Write-down and sales of the year, Cost |  | (5,606) | (3,115)
Impairment loss, Cost | [1],[2] | (33) | (581)
Ending Balance, Cost |  | 222,624 | 207,605
Reclassification, Accumulated Depreciation |  |  | 37
Depreciation charges of the year, Accumulated Depreciation | [1],[3] | (17,273) | (16,819)
Write-down and sales of the year, Accumulated Depreciation |  | 4,692 | 2,692
Other [member] |  |  |
Property and Equipment and Leased Assets and Lease Liabilities (Details) - Schedule of changes in property and equipment [Line Items] |  |  |
Beginning Balance, Cost |  | 55,519 | 53,500
Beginning Balance, Accumulated Depreciation |  | (45,527) | (42,879)
Transfers, Accumulated Depreciation |  |  | 15
Ending Balance, Accumulated Depreciation |  | (47,861) | (45,527)
Impairment loss | [1],[2] | 12 |
Additions, Cost |  | 1,510 | 2,839
Write-down and sales of the year, Cost |  | (1,105) | (762)
Impairment loss, Cost | [1],[2] | (26) | (58)
Ending Balance, Cost |  | 55,898 | 55,519
Depreciation charges of the year, Accumulated Depreciation | [1],[3] | (3,371) | (3,403)
Write-down and sales of the year, Accumulated Depreciation |  | $ 1,025 | $ 740
[1] | See Note No. 36 about Depreciation, Amortization and Impairment.
[2] | This amount does not include charge-offs of Property and Equipment of Ch$916 million (Ch$949 million as of December 2019).
[3] | It does not include depreciation for the year for Investment Properties, which it registered under the item “Investment Properties” for an amount of Ch$357 million (Ch$359 million in 2019).

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