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Net Foreign Exchange Gain (Loss) (Tables)
 12 Months Ended
Dec. 31, 2021
Disclosure of effect of changes in foreign exchange rates [text block] [Abstract]  
Schedule of net foreign exchange income
   For the years ended December 31, 
   2021   2020   2019 
   MCh$   MCh$   MCh$ 
Net foreign exchange gain (loss)            
Net (losses)/gains from currency exchange differences   (481,340)   90,133    (89,893)
Hedging derivatives   587,976    (27,624)   362,374 
Gain/(loss) from assets indexed to foreign currency   18,795    (3,512)   7,376 
Total   125,431    58,997    279,857