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Cash and cash equivalents (Details 4) - CLP ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of Cash and Cash Equivalents [Line Items]      
Other cahs payment to acquire interests in joint ventures $ 13,549,638 $ 59,505,559 $ 49,312,890
Cash flow used for control of subsidiaries or other business 0 49,222,782 7,800,000
Cash flow used in the purchase of non-controling interests 0 0 1,149,689
Payment for changes in ownership interests in subidiaries 8,652,268 5,819,495 0
Total $ 22,201,906 $ 114,547,836 $ 58,262,579