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Intangible Assets (Details 1) - CLP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about intangible assets [line items]    
Gross, beginning balance $ 218,415 $ 197,057
Acquisitions 32,860 29,562
Disposals and impairment (1,227) (8,204)
Other (46)
Gross, ending balance 250,002 218,415
Licenses [Member]    
Disclosure of detailed information about intangible assets [line items]    
Gross, beginning balance 37,224 37,224
Acquisitions
Disposals and impairment (1,227)
Other
Gross, ending balance 35,997 37,224
Software development [Member]    
Disclosure of detailed information about intangible assets [line items]    
Gross, beginning balance 181,191 159,833
Acquisitions 32,860 29,562
Disposals and impairment (8,204)
Other (46)
Gross, ending balance $ 214,005 $ 181,191