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Common Shareholders' Equity (Details) - Equity Holders [Member] - CLP ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statement [Line Items] |  |  |
Equity holders of the controlling company | $ 130,141,692 | $ 306,890,792 | $ 129,607,353
Weighted average number of shares | 369,502,872 | 369,502,872 | 369,502,872
Basic income per share | $ 352.21 | $ 830.55 | $ 350.76
Diluted income per share | $ 352.21 | $ 830.55 | $ 350.76

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- Definition The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2019-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2019-en-r&anchor=para_70_b&doctype=Standard -URIDate 2019-03-27 + Details
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