FINANCIAL RISK MANAGEMENT - Sensitivity Analysis regarding Change in Interest Rates (Details) - Interest Rate Risk [Member]
S/ in Thousands |
12 Months Ended |
|
Dec. 31, 2019
PEN (S/)
item
|
Dec. 31, 2018
PEN (S/)
item
|
| Soles at 50 basis points change [Member] |
|
|
| Disclosure of financial risks management [Line Items] |
|
|
| Sensitivity Analysis, Changes In Basis Points | item |
50
|
50
|
| Sensitivity Analysis, Net Profit |
S/ 7,696
|
S/ 10,463
|
| Sensitivity Analysis, Net Economic Value |
S/ 520,389
|
S/ 439,964
|
| Soles at 75 basis points change [Member] |
|
|
| Disclosure of financial risks management [Line Items] |
|
|
| Sensitivity Analysis, Changes In Basis Points | item |
75
|
75
|
| Sensitivity Analysis, Net Profit |
S/ 11,544
|
S/ 15,695
|
| Sensitivity Analysis, Net Economic Value |
S/ 780,584
|
S/ 659,946
|
| Soles at 100 basis points change [Member] |
|
|
| Disclosure of financial risks management [Line Items] |
|
|
| Sensitivity Analysis, Changes In Basis Points | item |
100
|
100
|
| Sensitivity Analysis, Net Profit |
S/ 15,392
|
S/ 20,926
|
| Sensitivity Analysis, Net Economic Value |
S/ 1,040,778
|
S/ 879,928
|
| Soles at 150 basis points change [Member] |
|
|
| Disclosure of financial risks management [Line Items] |
|
|
| Sensitivity Analysis, Changes In Basis Points | item |
150
|
150
|
| Sensitivity Analysis, Net Profit |
S/ 23,088
|
S/ 31,389
|
| Sensitivity Analysis, Net Economic Value |
S/ 1,561,167
|
S/ 1,319,893
|
| US Dollar at 50 basis points change [Member] |
|
|
| Disclosure of financial risks management [Line Items] |
|
|
| Sensitivity Analysis, Changes In Basis Points | item |
50
|
50
|
| Sensitivity Analysis, Net Profit |
S/ 52,276
|
S/ 48,325
|
| Sensitivity Analysis, Net Economic Value |
S/ 50,253
|
S/ 6,718
|
| US Dollar at 75 basis points change [Member] |
|
|
| Disclosure of financial risks management [Line Items] |
|
|
| Sensitivity Analysis, Changes In Basis Points | item |
75
|
75
|
| Sensitivity Analysis, Net Profit |
S/ 78,413
|
S/ 72,487
|
| Sensitivity Analysis, Net Economic Value |
S/ 75,379
|
S/ 10,078
|
| US Dollar at 100 basis points change [Member] |
|
|
| Disclosure of financial risks management [Line Items] |
|
|
| Sensitivity Analysis, Changes In Basis Points | item |
100
|
100
|
| Sensitivity Analysis, Net Profit |
S/ 104,551
|
S/ 96,650
|
| Sensitivity Analysis, Net Economic Value |
S/ 100,506
|
S/ 13,437
|
| US Dollar at 150 basis points change [Member] |
|
|
| Disclosure of financial risks management [Line Items] |
|
|
| Sensitivity Analysis, Changes In Basis Points | item |
150
|
150
|
| Sensitivity Analysis, Net Profit |
S/ 156,827
|
S/ 144,975
|
| Sensitivity Analysis, Net Economic Value |
S/ 150,759
|
S/ 20,155
|