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Common Shareholders' Equity (Details 2) - CLP ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of Common Shareholders' Equity [Line Items]      
Cash flow hedges $ (55,220,514) $ 17,077,670 $ 37,990,079
Gains (losses) from defined benefit plans (1,859,692) (4,127,305) (1,263,781)
Charge to equity (610,345) 1,014,283 323,337
Other comprehensive income (53,621,696) 14,310,634 37,112,643
Equity Holders [Member]      
Disclosure of Common Shareholders' Equity [Line Items]      
Conversion of joint ventures and foreign subsidiaries (125,344,149) (70,932,096) (55,755,054)
Cash flow hedges 4,068,855 345,986 63,008
Gains (losses) from defined benefit plans (1,859,692) (4,127,305) (1,263,781)
Inflation adjustment of subsidiaries in Argentina 70,123,635 88,009,766 93,745,133
Charge to equity (610,345) 1,014,283 323,337
Other comprehensive income (53,621,696) 14,310,634 37,112,643
Equity holders of the parent (50,373,462) 13,484,816 34,657,314
Non-controlling interests (3,248,234) 825,818 2,455,329
Reserve of exchange differences on translation [member] | Equity Holders [Member]      
Disclosure of Common Shareholders' Equity [Line Items]      
Conversion of joint ventures and foreign subsidiaries (125,344,149) (70,932,096) (55,755,054)
Cash flow hedges 0 0 0
Gains (losses) from defined benefit plans 0 0 0
Inflation adjustment of subsidiaries in Argentina 70,123,635 88,009,766 93,745,133
Charge to equity 0 0 0
Other comprehensive income (55,220,514) 17,077,670 37,990,079
Equity holders of the parent (52,043,623) 16,122,893 35,487,433
Non-controlling interests (3,176,891) 954,777 2,502,646
Reserve of cash flow hedges [member] | Equity Holders [Member]      
Disclosure of Common Shareholders' Equity [Line Items]      
Conversion of joint ventures and foreign subsidiaries 0 0 0
Cash flow hedges 4,068,855 345,986 63,008
Gains (losses) from defined benefit plans 0 0 0
Inflation adjustment of subsidiaries in Argentina 0 0 0
Charge to equity (1,098,591) (93,416) (16,196)
Other comprehensive income 2,970,264 252,570 46,812
Equity holders of the parent 2,968,182 249,503 51,944
Non-controlling interests 2,082 3,067 (5,132)
Reserve of Actuarial gains and losses on defined benefit plans | Equity Holders [Member]      
Disclosure of Common Shareholders' Equity [Line Items]      
Conversion of joint ventures and foreign subsidiaries 0 0 0
Cash flow hedges 0 0 0
Gains (losses) from defined benefit plans (1,859,692) (4,127,305) (1,263,781)
Inflation adjustment of subsidiaries in Argentina 0 0 0
Charge to equity 488,246 1,107,699 339,533
Other comprehensive income (1,371,446) (3,019,606) (924,248)
Equity holders of the parent (1,298,021) (2,887,580) (882,063)
Non-controlling interests $ (73,425) $ (132,026) $ (42,185)