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Foreign Exchange Transactions, Net (Tables)
 12 Months Ended
Dec. 31, 2021
Disclosure of effect of changes in foreign exchange rates [text block] [Abstract]  
Schedule of foreign exchange transactions, net
   2019   2020   2021 
   MCh$   MCh$   MCh$ 
Gain (loss) from accounting hedges   113,374    (17,156)   199,208 
Exchange difference, net   6,284    (2,651)   15,107 
Indexed foreign currency   (88,772)   176,469    (230,277)
Total   30,886    156,662    (15,962)