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INVESTMENTS (Details 4) - PEN (S/)
S/ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Disclosure of Investments [Line Items]    
Financial assets at fair value through profit or loss, classified as held for trading S/ 518,488 S/ 508,103
Inmuebles Panamericana [Member]    
Disclosure of Investments [Line Items]    
Financial assets at fair value through profit or loss, classified as held for trading 153,953 156,186
Abengoa Transmision del Norte [Member]    
Disclosure of Investments [Line Items]    
Financial assets at fair value through profit or loss, classified as held for trading 80,948 82,492
Concesionaria La Chira S.A. [Member]    
Disclosure of Investments [Line Items]    
Financial assets at fair value through profit or loss, classified as held for trading   30,182
Hunt Oil Company [Member]    
Disclosure of Investments [Line Items]    
Financial assets at fair value through profit or loss, classified as held for trading   23,244
Others [Member]    
Disclosure of Investments [Line Items]    
Financial assets at fair value through profit or loss, classified as held for trading 202,836 S/ 215,999
Industrias de Aceite SA [Member]    
Disclosure of Investments [Line Items]    
Financial assets at fair value through profit or loss, classified as held for trading 48,231  
Homecenters Peruanos SA [Member]    
Disclosure of Investments [Line Items]    
Financial assets at fair value through profit or loss, classified as held for trading S/ 32,520