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Investments Accounted for Using the Equity Method - Summary of Financial Information from Financial Statements of Joint Ventures (Detail)
$ in Thousands
 12 Months Ended
Dec. 30, 2021
CLP ($)
Dec. 30, 2021
USD ($)
Dec. 31, 2021
CLP ($)
Dec. 31, 2020
CLP ($)
Dec. 31, 2019
CLP ($)
Dec. 31, 2018
CLP ($)
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items]            
Current Assets     $ 1,268,252,493 $ 1,026,401,196    
Non-current Assets     8,232,071,103 6,878,070,388    
Current Liabilities     2,132,326,217 1,045,480,165    
Non-current Liabilities     4,021,504,481 3,264,716,920    
Cash and cash equivalents     309,975,140 332,036,013 $ 235,684,500 $ 245,171,924
Revenues     2,829,682,404 2,548,384,317 2,624,576,323  
Depreciation and amortization expense     (210,927,656) (229,957,019) (236,627,387)  
Income tax expense     (15,138,658) 81,305,107 (61,227,904)  
Profit (loss)     100,710,134 (52,386,835) 316,093,218  
Comprehensive Income     10,240,748 $ 66,969,126 $ 281,237,424  
Sale of equity interest     $ 11,786,767      
Transmisora Electrica de Quillota Ltda. [Member]            
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items]            
Ownership interest     50.00% 50.00%    
Current Assets       $ 7,157,805    
Non-current Assets       10,068,936    
Current Liabilities       806,841    
Non-current Liabilities       1,517,515    
Cash and cash equivalents       4,261,166    
Revenues     $ 896,616 4,643,283    
Other fixed operating expenses     (239,154) (268,806)    
Depreciation and amortization expense     (824,314) (782,799)    
Other Income     25,735 4,187    
Interest income     61,769 29,103    
Income tax expense     (505,710) (921,039)    
Profit (loss)     (585,058) 2,703,929    
Comprehensive Income     $ (585,058) $ 2,703,929    
Percentage of ownership interest transferred 50.00% 50.00%        
Sale of equity interest $ 11,786,767 $ 13,862,707        
Profit on sale of equity interest $ 9,968,845          
HIF H2 S.p.A [Member]            
Disclosure Of Significant Investments In Associates And Joint Ventures [Line Items]            
Ownership interest     50.00%      
Current Assets     $ 4,008,576      
Non-current Liabilities     4,006,021      
Cash and cash equivalents     $ 2,555