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Trade and other receivables (Details 4) - CLP ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Notes and other explanatory information [abstract]      
Balance at the beginning of year $ (5,689,741) $ (5,820,206) $ (6,323,298)
Estimate of expected credit losses up 12 months (4,135,572) (1,091,053) (1,846,559)
Estimate of expected credit losses longer than 12 months (74,250) (31,800) (33,501)
Impairment provision of accounts receivable (4,209,822) (1,122,853) (1,880,060)
Uncollectible accounts 1,025,786 478,548 1,995,725
Add back of unused provisions 102,200 204,012 476,246
Effect of translation into presentation currency 1,020,272 570,758 (88,819)
Total $ (7,751,305) $ (5,689,741) $ (5,820,206)