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Related Party Transactions (Details) - Schedule of income and expenses from related party transactions - CLP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Schedule of income and expenses from related party transactions [Abstract]      
Interest and revenue income $ 15,790 $ 19,039 $ 21,736
Interest and revenue expense 258 2,619 7,196
Fees and commission income 41,166 72,931 70,286
Fees and commission expense 39,988 65,383 74,205
Net financial operating income      
Derivative instruments income [1] 12,219 124,967 85,500
Derivative instruments expense [1] 46,593 73,252 42,365
Other financial operations income 40 87  
Other financial operations expenses   119
Release or established of provision for credit risk 1,226 106 34
Operating expenses 119,259 120,559 105,734
Other income 469 542 446
Other expenses $ 4 $ 26 $ 45
[1] The outcome of derivative operations is presented net at each related counterparty level. Additionally, this line includes operations with local counterpart banks (unrelated) which have been novated by Comder Contraparte Central S.A. (Related entity) for centralized clearing purposes, which generated a net gain of Ch$4,997 million as of December 31, 2020 (net gain of Ch$123,461 million as of December 31, 2019 and net gain of Ch$71,297 million as of December 31, 2018).