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FINANCIAL RISK MANAGEMENT (Details 6) - PEN (S/)
S/ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss S/ 171,212,821 S/ 164,444,879
Financial instruments with exposure to credit risk [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 171,212,821 164,444,879
Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 141,217,038  
Central Reserve Bank of Peru [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 26,138,283 31,658,834
Central Reserve Bank of Peru [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 16,307,372  
Financial services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 17,502,389 18,069,697
Financial services [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 13,237,970  
Manufacturing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 18,314,303 15,959,178
Manufacturing [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 16,840,385  
Mortgage loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 16,997,464 14,638,363
Mortgage loans [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 16,997,464  
Consumer loans [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 13,384,611 10,816,588
Consumer loans [member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 13,384,611  
Micro business loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 13,150,811 12,897,206
Micro business loans [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 13,150,811  
Commerce [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 13,121,726 12,046,914
Commerce [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 12,752,836  
Government and public administration [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 12,147,380 11,162,048
Government and public administration [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 4,768,891  
Electricity, gas and water [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 6,397,292 6,255,652
Electricity, gas and water [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 4,312,044  
Community services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 4,466,923 4,442,989
Community services [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 4,459,532  
Communications, storage and transportation [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 5,718,776 5,216,969
Communications, storage and transportation [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 4,377,933  
Mining [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 2,852,646 3,398,126
Mining [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 2,661,615  
Construction [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 2,237,871 2,269,782
Construction [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,848,063  
Agriculture [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 2,605,754 2,281,101
Agriculture [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 2,546,889  
Insurance [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,881,794 1,536,006
Insurance [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,862,688  
Education, health and other services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,722,982 1,715,453
Education, health and other services [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,296,293  
Real Estate and Leasing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 8,101,396 5,393,905
Real Estate and Leasing [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 6,423,262  
Fishing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 449,019 395,976
Fishing [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 445,603  
Others [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 4,021,401 4,290,092
Others [Member] | Financial assets at amortized cost    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 3,542,776  
Held for trading and hedging and others [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 4,278,762 [1] 4,726,563
Held for trading and hedging and others [member] | Central Reserve Bank of Peru [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 [1] 2,102,331
Held for trading and hedging and others [member] | Financial services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,640,578 [1] 1,057,679
Held for trading and hedging and others [member] | Manufacturing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 97,425 [1] 23,277
Held for trading and hedging and others [member] | Mortgage loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 [1] 0
Held for trading and hedging and others [member] | Consumer loans [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 [1] 0
Held for trading and hedging and others [member] | Micro business loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 [1] 0
Held for trading and hedging and others [member] | Commerce [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 27,021 [1] 52,453
Held for trading and hedging and others [member] | Government and public administration [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,790,176 [1] 1,287,212
Held for trading and hedging and others [member] | Electricity, gas and water [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 101,939 [1] 79,825
Held for trading and hedging and others [member] | Community services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 [1] 0
Held for trading and hedging and others [member] | Communications, storage and transportation [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 24,678 [1] 8,285
Held for trading and hedging and others [member] | Mining [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 31,094 [1] 7,728
Held for trading and hedging and others [member] | Construction [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 15,068 [1] 51,812
Held for trading and hedging and others [member] | Agriculture [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 13,440 [1] 3,342
Held for trading and hedging and others [member] | Insurance [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 19,106 [1] 6,664
Held for trading and hedging and others [member] | Education, health and other services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 5,419 [1] 5,279
Held for trading and hedging and others [member] | Real Estate and Leasing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 62,597 [1] 10,391
Held for trading and hedging and others [member] | Fishing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 3,416 [1] 1,689
Held for trading and hedging and others [member] | Others [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 446,805 [1] 28,596
Designated at fair value through profit for loss at inception [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 521,186 537,685
Designated at fair value through profit for loss at inception [member] | Central Reserve Bank of Peru [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 0
Designated at fair value through profit for loss at inception [member] | Financial services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 161,498 320,619
Designated at fair value through profit for loss at inception [member] | Manufacturing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 38,586 29,508
Designated at fair value through profit for loss at inception [member] | Mortgage loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 0
Designated at fair value through profit for loss at inception [member] | Consumer loans [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 0
Designated at fair value through profit for loss at inception [member] | Micro business loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 0
Designated at fair value through profit for loss at inception [member] | Commerce [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 11,377 45,130
Designated at fair value through profit for loss at inception [member] | Government and public administration [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 41,060 40,480
Designated at fair value through profit for loss at inception [member] | Electricity, gas and water [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 42,705 52,521
Designated at fair value through profit for loss at inception [member] | Community services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 0
Designated at fair value through profit for loss at inception [member] | Communications, storage and transportation [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 36,794 0
Designated at fair value through profit for loss at inception [member] | Mining [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 5,749 29,249
Designated at fair value through profit for loss at inception [member] | Construction [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,913 17,820
Designated at fair value through profit for loss at inception [member] | Agriculture [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 0
Designated at fair value through profit for loss at inception [member] | Insurance [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 0
Designated at fair value through profit for loss at inception [member] | Education, health and other services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 21,518 2,358
Designated at fair value through profit for loss at inception [member] | Real Estate and Leasing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 159,986 0
Designated at fair value through profit for loss at inception [member] | Fishing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 0
Designated at fair value through profit for loss at inception [member] | Others [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0 0
Loans and receivables [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   130,343,367
Loans and receivables [member] | Central Reserve Bank of Peru [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   21,630,506
Loans and receivables [member] | Financial services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   11,892,190
Loans and receivables [member] | Manufacturing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   14,363,997
Loans and receivables [member] | Mortgage loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   14,638,363
Loans and receivables [member] | Consumer loans [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   10,816,588
Loans and receivables [member] | Micro business loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   12,897,206
Loans and receivables [member] | Commerce [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   11,682,985
Loans and receivables [member] | Government and public administration [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   450,174
Loans and receivables [member] | Electricity, gas and water [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   4,148,658
Loans and receivables [member] | Community services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   4,408,494
Loans and receivables [member] | Communications, storage and transportation [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   3,991,424
Loans and receivables [member] | Mining [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   3,031,376
Loans and receivables [member] | Construction [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   1,790,431
Loans and receivables [member] | Agriculture [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   2,272,312
Loans and receivables [member] | Insurance [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   1,529,342
Loans and receivables [member] | Education, health and other services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   1,494,635
Loans and receivables [member] | Real Estate and Leasing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   5,306,353
Loans and receivables [member] | Fishing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   394,287
Loans and receivables [member] | Others [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   3,604,046
Investments available- for-sale [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   24,423,891
Investments available- for-sale [member] | Central Reserve Bank of Peru [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   7,925,997
Investments available- for-sale [member] | Financial services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   4,700,343
Investments available- for-sale [member] | Manufacturing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   1,529,261
Investments available- for-sale [member] | Mortgage loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments available- for-sale [member] | Consumer loans [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments available- for-sale [member] | Micro business loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments available- for-sale [member] | Commerce [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   248,396
Investments available- for-sale [member] | Government and public administration [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   5,220,054
Investments available- for-sale [member] | Electricity, gas and water [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   1,918,317
Investments available- for-sale [member] | Community services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   34,495
Investments available- for-sale [member] | Communications, storage and transportation [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   1,182,783
Investments available- for-sale [member] | Mining [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   329,773
Investments available- for-sale [member] | Construction [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   400,386
Investments available- for-sale [member] | Agriculture [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   5,447
Investments available- for-sale [member] | Insurance [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments available- for-sale [member] | Education, health and other services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   213,181
Investments available- for-sale [member] | Real Estate and Leasing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   77,161
Investments available- for-sale [member] | Fishing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments available- for-sale [member] | Others [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   638,297
Investments held-to-maturity [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   4,413,373
Investments held-to-maturity [member] | Central Reserve Bank of Peru [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Financial services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   98,866
Investments held-to-maturity [member] | Manufacturing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   13,135
Investments held-to-maturity [member] | Mortgage loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Consumer loans [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Micro business loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Commerce [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   17,950
Investments held-to-maturity [member] | Government and public administration [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   4,164,128
Investments held-to-maturity [member] | Electricity, gas and water [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   56,331
Investments held-to-maturity [member] | Community services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Communications, storage and transportation [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   34,477
Investments held-to-maturity [member] | Mining [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Construction [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   9,333
Investments held-to-maturity [member] | Agriculture [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Insurance [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Education, health and other services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Real Estate and Leasing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Fishing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   0
Investments held-to-maturity [member] | Others [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss   S/ 19,153
At fair value through other comprehensive income investments    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 25,195,835  
At fair value through other comprehensive income investments | Central Reserve Bank of Peru [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 9,830,911  
At fair value through other comprehensive income investments | Financial services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 2,462,343  
At fair value through other comprehensive income investments | Manufacturing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,337,907  
At fair value through other comprehensive income investments | Mortgage loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0  
At fair value through other comprehensive income investments | Consumer loans [member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0  
At fair value through other comprehensive income investments | Micro business loans [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0  
At fair value through other comprehensive income investments | Commerce [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 330,492  
At fair value through other comprehensive income investments | Government and public administration [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 5,547,253  
At fair value through other comprehensive income investments | Electricity, gas and water [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,940,604  
At fair value through other comprehensive income investments | Community services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 7,391  
At fair value through other comprehensive income investments | Communications, storage and transportation [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,279,371  
At fair value through other comprehensive income investments | Mining [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 154,188  
At fair value through other comprehensive income investments | Construction [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 372,827  
At fair value through other comprehensive income investments | Agriculture [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 45,425  
At fair value through other comprehensive income investments | Insurance [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0  
At fair value through other comprehensive income investments | Education, health and other services [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 399,752  
At fair value through other comprehensive income investments | Real Estate and Leasing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 1,455,551  
At fair value through other comprehensive income investments | Fishing [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss 0  
At fair value through other comprehensive income investments | Others [Member]    
Disclosure of financial risk management [line Items]    
Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss S/ 31,820  
[1] It includes non-trading investments that did not pass SPPI test.