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Property and Equipment - Accumulated Depreciation (Details) $ in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($) | Dec. 31, 2017 CLP ($) | Dec. 31, 2016 CLP ($) | Dec. 31, 2015 CLP ($)
Reconciliation of changes in Property and equipment |  |  |  |
Property, plant and equipment at beginning of period |  | $ 219,082 |  |
Property, plant and equipment at end of period | $ 351,395 | 216,259 | $ 219,082 |
Additional information |  |  |  |
Depreciation on Investment Properties |  | 368 | 368 | $ 379
Accumulated depreciation |  |  |  |
Reconciliation of changes in Property and equipment |  |  |  |
Property, plant and equipment at beginning of period |  | (313,831) | (292,329) |
Depreciation charges in the period |  | (25,808) | (24,326) |
Sales and disposals in the period |  | 7,549 | 2,824 |
Property, plant and equipment at end of period |  | (332,090) | (313,831) | (292,329)
Accumulated depreciation | Land and Buildings |  |  |  |
Reconciliation of changes in Property and equipment |  |  |  |
Property, plant and equipment at beginning of period |  | (134,900) | (126,568) |
Depreciation charges in the period |  | (9,040) | (8,470) |
Sales and disposals in the period |  | 1,172 | 138 |
Property, plant and equipment at end of period |  | (142,768) | (134,900) | (126,568)
Accumulated depreciation | Equipment |  |  |  |
Reconciliation of changes in Property and equipment |  |  |  |
Property, plant and equipment at beginning of period |  | (139,277) | (127,644) |
Transfers |  |  | (18) |
Depreciation charges in the period |  | (13,723) | (13,268) |
Sales and disposals in the period |  | 4,851 | 1,653 |
Reclassifications |  | 143 |  |
Property, plant and equipment at end of period |  | (148,006) | (139,277) | (127,644)
Accumulated depreciation | Other |  |  |  |
Reconciliation of changes in Property and equipment |  |  |  |
Property, plant and equipment at beginning of period |  | (39,654) | (38,117) |
Transfers |  |  | 18 |
Depreciation charges in the period |  | (3,045) | (2,588) |
Sales and disposals in the period |  | 1,526 | 1,033 |
Reclassifications |  | (143) |  |
Property, plant and equipment at end of period |  | $ (41,316) | $ (39,654) | $ (38,117)

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- Definition The amount of depreciation recognised on investment property. [Refer: Depreciation and amortisation expense; Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph d -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_79_d_iv&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 76 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_76&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_vii&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 75 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_75_a&doctype=Standard -URIDate 2017-03-09 + Details
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