OPERATING SEGMENTS (Details) - PEN (S/)
S/ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of operating segments [line items]      
External [1] S/ 19,699,000 S/ 18,025,000 S/ 17,599,000
From other segments [1],[2] 607,000 579,000 645,000
Net interest, similar income and expenses 9,090,797 8,489,105 8,071,487
Other income, net [3] 5,397,000 4,882,000 5,181,000
Provision for credit losses on loan portfolio (2,100,000) (1,815,000) (2,057,000)
Depreciation and amortization (632,000) (429,000) (420,000)
Income tax (1,623,000) (1,521,000) (1,393,000)
Net profit 4,352,331 4,071,305 4,181,648
Additions of fixed asset, intangibles and goodwill 803,000 601,000 416,000
Total assets 187,876,691 177,263,201 170,472,000
Total liabilities 161,130,381 152,997,125 148,219,000
Universal Banking Banco de Crdito del Peru [Member]      
Disclosure of operating segments [line items]      
External [1] 11,750,000 10,757,000 10,095,000
From other segments [1],[2] 345,000 381,000 371,000
Net interest, similar income and expenses 6,244,000 5,616,000 5,300,000
Other income, net [3] 3,632,000 3,275,000 2,927,000
Provision for credit losses on loan portfolio (1,558,000) (1,265,000) (1,515,000)
Depreciation and amortization (421,000) (277,000) (261,000)
Income tax (1,160,000) (1,137,000) (996,000)
Net profit 3,239,000 2,927,000 2,638,000
Additions of fixed asset, intangibles and goodwill 349,000 397,000 286,000
Total assets 139,832,000 132,880,000 128,259,000
Total liabilities 123,057,000 117,803,000 114,543,000
Universal Banking Banco de Credito de Bolivia [Member]      
Disclosure of operating segments [line items]      
External [1] 736,000 686,000 616,000
From other segments [1],[2] 4,000 4,000 2,000
Net interest, similar income and expenses 329,000 309,000 315,000
Other income, net [3] 117,000 124,000 119,000
Provision for credit losses on loan portfolio (61,000) (55,000) (79,000)
Depreciation and amortization (19,000) (12,000) (11,000)
Income tax (43,000) (45,000) (40,000)
Net profit 79,000 78,000 75,000
Additions of fixed asset, intangibles and goodwill 16,000 45,000 10,000
Total assets 10,481,000 9,957,000 9,118,000
Total liabilities 9,744,000 9,266,000 8,482,000
Insurance And Pension Funds Pacifico Seguros And Subsidiaries [Member]      
Disclosure of operating segments [line items]      
External [1] 3,249,000 2,730,000 2,662,000
From other segments [1],[2] 23,000 21,000 120,000
Net interest, similar income and expenses 493,000 446,000 423,000
Other income, net [3] 348,000 669,000 972,000
Provision for credit losses on loan portfolio 0 0 0
Depreciation and amortization (58,000) (51,000) (49,000)
Income tax (6,000) (4,000) (28,000)
Net profit 381,000 353,000 326,000
Additions of fixed asset, intangibles and goodwill 45,000 85,000 56,000
Total assets 13,785,000 12,224,000 11,409,000
Total liabilities 10,964,000 9,591,000 8,560,000
Insurance And Pension Funds Prima AFP [Member]      
Disclosure of operating segments [line items]      
External [1] 457,000 371,000 388,000
From other segments [1],[2] 3,000 2,000 3,000
Net interest, similar income and expenses (1,000) 0 1,000
Other income, net [3] 457,000 371,000 387,000
Provision for credit losses on loan portfolio 0 0 0
Depreciation and amortization (20,000) (18,000) (23,000)
Income tax (85,000) (58,000) (66,000)
Net profit 197,000 140,000 140,000
Additions of fixed asset, intangibles and goodwill 8,000 9,000 10,000
Total assets 909,000 875,000 883,000
Total liabilities 211,000 241,000 264,000
Microfinance Mibanco [Member]      
Disclosure of operating segments [line items]      
External [1] 2,408,000 2,468,000 2,337,000
From other segments [1],[2] 126,000 88,000 77,000
Net interest, similar income and expenses 1,901,000 1,956,000 1,829,000
Other income, net [3] 62,000 156,000 98,000
Provision for credit losses on loan portfolio (472,000) (491,000) (457,000)
Depreciation and amortization (87,000) (49,000) (49,000)
Income tax (168,000) (193,000) (146,000)
Net profit 401,000 462,000 399,000
Additions of fixed asset, intangibles and goodwill 60,000 50,000 44,000
Total assets 13,576,000 13,220,000 12,363,000
Total liabilities 11,489,000 11,322,000 10,666,000
Bancompartir      
Disclosure of operating segments [line items]      
External [1] 18,000    
From other segments [1],[2] 0    
Net interest, similar income and expenses 13,000    
Other income, net [3] 2,000    
Provision for credit losses on loan portfolio (2,000)    
Depreciation and amortization (1,000)    
Income tax 1,000    
Net profit (2,000)    
Additions of fixed asset, intangibles and goodwill 1,000    
Total assets 1,046,000    
Total liabilities 888,000    
Microfinance Edyficas SAS [Member]      
Disclosure of operating segments [line items]      
External [1] 50,000 44,000 30,000
From other segments [1],[2] 0 0 0
Net interest, similar income and expenses 43,000 40,000 27,000
Other income, net [3] 2,000 1,000 1,000
Provision for credit losses on loan portfolio (6,000) (4,000) (5,000)
Depreciation and amortization (1,000) 0 (1,000)
Income tax (3,000) (4,000) 0
Net profit 5,000 5,000 (1,000)
Additions of fixed asset, intangibles and goodwill 1,000 0 1,000
Total assets 141,000 119,000 92,000
Total liabilities 80,000 62,000 37,000
Investment Banking and Wealth Management [Member]      
Disclosure of operating segments [line items]      
External [1] 968,000 886,000 906,000
From other segments [1],[2] 6,000 (14,000) (5,000)
Net interest, similar income and expenses 69,000 98,000 135,000
Other income, net [3] 885,000 634,000 658,000
Provision for credit losses on loan portfolio 0 0 0
Depreciation and amortization (22,000) (21,000) (25,000)
Income tax (16,000) (29,000) (33,000)
Net profit 230,000 146,000 252,000
Additions of fixed asset, intangibles and goodwill 236,000 8,000 7,000
Total assets 9,423,000 9,665,000 10,389,000
Total liabilities 7,950,000 8,190,000 8,730,000
Other segments [member]      
Disclosure of operating segments [line items]      
External [1] 63,000 83,000 565,000
From other segments [1],[2] 100,000 97,000 77,000
Net interest, similar income and expenses 443,000 33,000 42,000
Other income, net [3] 561,000 106,000 535,000
Provision for credit losses on loan portfolio (1,000) 0 (1,000)
Depreciation and amortization (3,000) (1,000) (1,000)
Income tax (143,000) (51,000) (84,000)
Net profit (179,000) (40,000) 353,000
Additions of fixed asset, intangibles and goodwill 87,000 7,000 2,000
Total assets 2,998,000 2,862,000 2,781,000
Total liabilities 992,000 950,000 1,668,000
Elimination Segments [Member]      
Disclosure of operating segments [line items]      
External [1] 0 0 0
From other segments [1],[2] 0 0 0
Net interest, similar income and expenses (443,000) (9,000) (1,000)
Other income, net [3] (669,000) (454,000) (516,000)
Provision for credit losses on loan portfolio 0 0 0
Depreciation and amortization 0 0 0
Income tax 0 0 0
Net profit 0 0 0
Additions of fixed asset, intangibles and goodwill 0 0 0
Total assets (4,314,000) (4,539,000) (4,822,000)
Total liabilities S/ (4,245,000) S/ (4,428,000) S/ (4,731,000)
[1] Corresponds to total interest and similar income, other income (includes income and expenses on commissions) and net earned premiums from insurance activities.
[2] Corresponds to income derived from transactions with other segments, which were eliminated in the consolidated statement of income.
[3] Corresponds to other income (include income and expenses for commissions) and insurance underwriting result.