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LOANS, NET - Gross balance of loan portfolio (Details) - PEN (S/)
S/ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period S/ 109,960,624    
Write-offs     S/ (1,426,201)
Balances at the end of the period 114,807,958 S/ 109,960,624  
Stage 1 [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 961,784    
Transfer to Stage 2 (54,290)    
Transfer to Stage 3 (140,366)    
Transfer from Stage 2 197,124    
Transfer from Stage 3 42,132    
Transfers between classes of loans 0    
Change in PDs, LGDs, EADs 206,702    
New loans, liquidation and write-offs, net (125,447)    
Sale of loan portfolio 0    
Exchange differences and others (15,259)    
Acquisition of business 28,387    
Balances at the end of the period 1,100,767 961,784  
Stage 1 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 113,208,189 105,552,681  
Transfer to Stage 2 (2,698,325) (3,900,592)  
Transfer to Stage 3 (1,451,648) (876,697)  
Transfer from Stage 2 2,846,034 1,825,529  
Transfer from Stage 3 57,325 65,218  
Transfers between classes of loans 0 0  
New loans, liquidation and write-offs, net 7,522,298 9,671,447  
Sale of loan portfolio 0 0  
Exchange differences and others (386,694) 870,603  
Acquisition of business 649,278    
Balances at the end of the period 119,746,457 113,208,189 105,552,681
Stage 2 [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 938,531    
Transfer to Stage 1 (197,124)    
Transfer to Stage 3 (112,694)    
Transfer from Stage 1 54,290    
Transfer from Stage 3 36,108    
Change in PDs, LGDs, EADs 501,077    
New loans, liquidation and write-offs, net (276,853)    
Exchange differences and others (567)    
Acquisition of business 12,442    
Balances at the end of the period 955,210 938,531  
Stage 2 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 12,177,920 7,870,109  
Transfer to Stage 1 (2,846,034) (1,825,529)  
Transfer to Stage 3 (899,533) (834,918)  
Transfer from Stage 1 2,698,325 3,900,592  
Transfer from Stage 3 42,861 56,100  
Transfers between classes of loans   0  
New loans, liquidation and write-offs, net (1,473,674) 2,917,428  
Sale of loan portfolio 0 0  
Exchange differences and others (21,777) 94,138  
Acquisition of business 33,754    
Balances at the end of the period 9,711,842 12,177,920 7,870,109
Stage 3 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 6,316,754 6,243,717  
Transfer to Stage 1 (57,325) (65,218)  
Transfer to Stage 2 (42,861) (56,100)  
Transfer from Stage 1 1,451,648 876,697  
Transfer from Stage 2 899,533 834,918  
Transfers between classes of loans 0 0  
New loans, liquidation and write-offs, net (1,512,779) (1,373,426)  
Sale of loan portfolio (151,781) (197,623)  
Exchange differences and others (24,200) 53,789  
Acquisition of business 86,927    
Balances at the end of the period 6,965,916 6,316,754 6,243,717
Stage 3 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 3,414,216    
Transfer to Stage 1 (42,132)    
Transfer to Stage 2 (36,108)    
Transfer from Stage 1 140,366    
Transfer from Stage 2 112,694    
Change in PDs, LGDs, EADs 1,060,640    
New loans, liquidation and write-offs, net (1,088,947)    
Sale of loan portfolio (111,312)    
Exchange differences and others (74,909)    
Acquisition of business 77,274    
Balances at the end of the period 3,451,782 3,414,216  
Consolidated 3 Stages [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 5,314,531    
New loans and liquidation, net 331,672    
Change in PDs, LGDs, EADs 1,768,419    
Write-offs (1,822,919)    
Sale of loan portfolio (111,312)    
Exchange differences and others (90,735)    
Acquisition of business 118,103    
Balances at the end of the period 5,507,759 5,314,531  
Consolidated 3 Stages [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 131,702,863 119,666,507  
Transfers between classes of loans   0  
New loans and liquidation, net 6,359,302 12,756,614  
Write-offs (1,823,457) (1,541,165)  
Sale of loan portfolio (151,781) (197,623)  
Exchange differences and others (432,671) 1,018,530  
Acquisition of business 769,959    
Balances at the end of the period 136,424,215 131,702,863 119,666,507
Commercial loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 63,609,988    
Write-offs     (217,160)
Balances at the end of the period 63,097,073 63,609,988  
Commercial loans [Member] | Stage 1 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 74,210,068 70,538,767  
Transfer to Stage 2 (1,157,585) (2,216,860)  
Transfer to Stage 3 (569,032) (187,558)  
Transfer from Stage 2 1,511,304 807,179  
Transfer from Stage 3 13,724 18,884  
Transfers between classes of loans 370,433 379,440  
New loans, liquidation and write-offs, net 1,608,096 4,176,547  
Sale of loan portfolio 0 0  
Exchange differences and others (312,259) 693,669  
Acquisition of business 163,499    
Balances at the end of the period 75,838,248 74,210,068 70,538,767
Commercial loans [Member] | Stage 1 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 311,767    
Transfer to Stage 2 (11,258)    
Transfer to Stage 3 (9,281)    
Transfer from Stage 2 41,033    
Transfer from Stage 3 9,492    
Transfers between classes of loans 4,886    
Change in PDs, LGDs, EADs 10,982    
New loans, liquidation and write-offs, net 36,768    
Sale of loan portfolio 0    
Exchange differences and others (8,834)    
Acquisition of business 3,130    
Balances at the end of the period 388,685 311,767  
Commercial loans [Member] | Stage 2 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 7,530,106 3,549,605  
Transfer to Stage 1 (1,511,304) (807,179)  
Transfer to Stage 3 (381,261) (306,268)  
Transfer from Stage 1 1,157,585 2,216,860  
Transfer from Stage 3 8,894 16,587  
Transfers between classes of loans 54,299 45,734  
New loans, liquidation and write-offs, net (1,960,025) 2,764,890  
Sale of loan portfolio 0 0  
Exchange differences and others (20,022) 49,877  
Acquisition of business 4,767    
Balances at the end of the period 4,883,039 7,530,106 3,549,605
Commercial loans [Member] | Stage 2 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 151,999    
Transfer to Stage 1 (41,033)    
Transfer to Stage 3 (21,988)    
Transfer from Stage 1 11,258    
Transfer from Stage 3 6,102    
Transfers between classes of loans 994    
Change in PDs, LGDs, EADs 62,277    
New loans, liquidation and write-offs, net (4,601)    
Exchange differences and others (511)    
Acquisition of business 1,638    
Balances at the end of the period 166,135 151,999  
Commercial loans [Member] | Stage 3 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 3,398,900 3,253,560  
Transfer to Stage 1 (13,724) (18,884)  
Transfer to Stage 2 (8,894) (16,587)  
Transfer from Stage 1 569,032 187,558  
Transfer from Stage 2 381,261 306,268  
Transfers between classes of loans (33,193) (33,127)  
New loans, liquidation and write-offs, net (446,188) (258,918)  
Sale of loan portfolio (72,219) (57,956)  
Exchange differences and others (18,719) 36,986  
Acquisition of business 15,161    
Balances at the end of the period 3,771,417 3,398,900 3,253,560
Commercial loans [Member] | Stage 3 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 1,355,363    
Transfer to Stage 1 (9,492)    
Transfer to Stage 2 (6,102)    
Transfer from Stage 1 9,281    
Transfer from Stage 2 21,988    
Transfers between classes of loans (33,973)    
Change in PDs, LGDs, EADs 301,493    
New loans, liquidation and write-offs, net (275,028)    
Sale of loan portfolio (55,783)    
Exchange differences and others (6,348)    
Acquisition of business 13,828    
Balances at the end of the period 1,315,227 1,355,363  
Commercial loans [Member] | Consolidated 3 Stages [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 1,819,129    
Transfers between classes of loans (28,093)    
New loans and liquidation, net (61,341)    
Change in PDs, LGDs, EADs 374,752    
Write-offs (181,520)    
Sale of loan portfolio (55,783)    
Exchange differences and others (15,693)    
Acquisition of business 18,596    
Balances at the end of the period 1,870,047 1,819,129  
Commercial loans [Member] | Consolidated 3 Stages [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 85,139,074 77,341,932  
Transfers between classes of loans 391,539 392,047  
New loans and liquidation, net (622,356) 6,797,559  
Write-offs (175,761) (115,040)  
Sale of loan portfolio (72,219) (57,956)  
Exchange differences and others (351,000) 780,532  
Acquisition of business 183,427    
Balances at the end of the period 84,492,704 85,139,074 77,341,932
Residential mortgage loans [Member]      
Disclosure of Loans, Net [Line Items]      
Write-offs     (10,662)
Residential mortgage loans [Member] | Stage 1 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 16,049,110 14,119,221  
Transfer to Stage 2 (411,622) (416,937)  
Transfer to Stage 3 (135,231) (159,561)  
Transfer from Stage 2 315,586 151,660  
Transfer from Stage 3 12,980 11,333  
Transfers between classes of loans 2,633 14,782  
New loans, liquidation and write-offs, net 2,108,051 2,216,316  
Sale of loan portfolio 0 0  
Exchange differences and others (64,077) 112,296  
Acquisition of business 25,598    
Balances at the end of the period 17,903,028 16,049,110 14,119,221
Residential mortgage loans [Member] | Stage 1 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 31,479    
Transfer to Stage 2 (2,069)    
Transfer to Stage 3 (726)    
Transfer from Stage 2 7,857    
Transfer from Stage 3 6,178    
Transfers between classes of loans 134    
Change in PDs, LGDs, EADs (11,675)    
New loans, liquidation and write-offs, net 6,850    
Sale of loan portfolio 0    
Exchange differences and others (490)    
Acquisition of business 547    
Balances at the end of the period 38,085 31,479  
Residential mortgage loans [Member] | Stage 2 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 762,549 569,685  
Transfer to Stage 1 (315,586) (151,660)  
Transfer to Stage 3 (142,954) (123,255)  
Transfer from Stage 1 411,622 416,937  
Transfer from Stage 3 4,840 6,586  
Transfers between classes of loans 155 240  
New loans, liquidation and write-offs, net 59,553 942  
Sale of loan portfolio 0 0  
Exchange differences and others (1,813) 43,074  
Acquisition of business 336    
Balances at the end of the period 778,702 762,549 569,685
Residential mortgage loans [Member] | Stage 2 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 22,404    
Transfer to Stage 1 (7,857)    
Transfer to Stage 3 (4,562)    
Transfer from Stage 1 2,069    
Transfer from Stage 3 2,434    
Transfers between classes of loans 42    
Change in PDs, LGDs, EADs 8,409    
New loans, liquidation and write-offs, net 2,780    
Exchange differences and others (100)    
Acquisition of business 65    
Balances at the end of the period 25,684 22,404  
Residential mortgage loans [Member] | Stage 3 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 959,033 862,645  
Transfer to Stage 1 (12,980) (11,333)  
Transfer to Stage 2 (4,840) (6,586)  
Transfer from Stage 1 135,231 159,561  
Transfer from Stage 2 142,954 123,255  
Transfers between classes of loans 0 353  
New loans, liquidation and write-offs, net (179,012) (128,110)  
Sale of loan portfolio (41,080) (49,908)  
Exchange differences and others (4,634) 9,156  
Acquisition of business 319    
Balances at the end of the period 994,991 959,033 862,645
Residential mortgage loans [Member] | Stage 3 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 470,286    
Transfer to Stage 1 (6,178)    
Transfer to Stage 2 (2,434)    
Transfer from Stage 1 726    
Transfer from Stage 2 4,562    
Change in PDs, LGDs, EADs 146,860    
New loans, liquidation and write-offs, net (101,740)    
Sale of loan portfolio (24,319)    
Exchange differences and others (15,245)    
Acquisition of business 193    
Balances at the end of the period 472,711 470,286  
Residential mortgage loans [Member] | Consolidated 3 Stages [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 524,169    
Transfers between classes of loans 176    
New loans and liquidation, net (49,190)    
Change in PDs, LGDs, EADs 143,594    
Write-offs (42,920)    
Sale of loan portfolio (24,319)    
Exchange differences and others (15,835)    
Acquisition of business 805    
Balances at the end of the period 536,480 524,169  
Residential mortgage loans [Member] | Consolidated 3 Stages [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 17,770,692 15,551,551  
Transfers between classes of loans 2,788 15,375  
New loans and liquidation, net 2,028,601 2,100,819  
Write-offs (40,009) (11,671)  
Sale of loan portfolio (41,080) (49,908)  
Exchange differences and others (70,524) 164,526  
Acquisition of business 26,253    
Balances at the end of the period 19,676,721 17,770,692 15,551,551
Micro-business loans [Member]      
Disclosure of Loans, Net [Line Items]      
Write-offs     (437,594)
Micro-business loans [Member] | Stage 1 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 12,236,140 11,561,250  
Transfer to Stage 2 (504,971) (612,647)  
Transfer to Stage 3 (440,088) (325,773)  
Transfer from Stage 2 491,781 412,930  
Transfer from Stage 3 12,896 13,543  
Transfers between classes of loans (355,466) (360,158)  
New loans, liquidation and write-offs, net 1,973,561 1,512,206  
Sale of loan portfolio 0 0  
Exchange differences and others (462) 34,789  
Acquisition of business 368,932    
Balances at the end of the period 13,782,323 12,236,140 11,561,250
Micro-business loans [Member] | Stage 1 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 342,519    
Transfer to Stage 2 (22,272)    
Transfer to Stage 3 (49,368)    
Transfer from Stage 2 57,319    
Transfer from Stage 3 9,631    
Transfers between classes of loans (6,511)    
Change in PDs, LGDs, EADs 149,468    
New loans, liquidation and write-offs, net (71,852)    
Sale of loan portfolio 0    
Exchange differences and others (5,759)    
Acquisition of business 22,467    
Balances at the end of the period 425,642 342,519  
Micro-business loans [Member] | Stage 2 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 1,965,061 1,986,325  
Transfer to Stage 1 (491,781) (412,930)  
Transfer to Stage 3 (208,610) (205,492)  
Transfer from Stage 1 504,971 612,647  
Transfer from Stage 3 6,320 8,582  
Transfers between classes of loans (53,193) (45,172)  
New loans, liquidation and write-offs, net 95,835 20,395  
Sale of loan portfolio 0 0  
Exchange differences and others (311) 706  
Acquisition of business 21,305    
Balances at the end of the period 1,839,597 1,965,061 1,986,325
Micro-business loans [Member] | Stage 2 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 263,593    
Transfer to Stage 1 (57,319)    
Transfer to Stage 3 (43,113)    
Transfer from Stage 1 22,272    
Transfer from Stage 3 5,576    
Transfers between classes of loans (956)    
Change in PDs, LGDs, EADs 172,546    
New loans, liquidation and write-offs, net (121,662)    
Exchange differences and others 63    
Acquisition of business 8,960    
Balances at the end of the period 249,960 263,593  
Micro-business loans [Member] | Stage 3 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 1,257,956 1,295,025  
Transfer to Stage 1 (12,896) (13,543)  
Transfer to Stage 2 (6,320) (8,582)  
Transfer from Stage 1 440,088 325,773  
Transfer from Stage 2 208,610 205,492  
Transfers between classes of loans 32,745 32,923  
New loans, liquidation and write-offs, net (591,241) (509,009)  
Sale of loan portfolio (33,262) (75,916)  
Exchange differences and others (366) 5,793  
Acquisition of business 55,544    
Balances at the end of the period 1,350,858 1,257,956 1,295,025
Micro-business loans [Member] | Stage 3 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 979,292    
Transfer to Stage 1 (9,631)    
Transfer to Stage 2 (5,576)    
Transfer from Stage 1 49,368    
Transfer from Stage 2 43,113    
Transfers between classes of loans 32,878    
Change in PDs, LGDs, EADs 327,884    
New loans, liquidation and write-offs, net (457,093)    
Sale of loan portfolio (27,267)    
Exchange differences and others (22,688)    
Acquisition of business 50,605    
Balances at the end of the period 960,885 979,292  
Micro-business loans [Member] | Consolidated 3 Stages [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 1,585,404    
Transfers between classes of loans 25,411    
New loans and liquidation, net 166,279    
Change in PDs, LGDs, EADs 649,898    
Write-offs (816,886)    
Sale of loan portfolio (27,267)    
Exchange differences and others (28,384)    
Acquisition of business 82,032    
Balances at the end of the period 1,636,487 1,585,404  
Micro-business loans [Member] | Consolidated 3 Stages [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 15,459,157 14,842,600  
Transfers between classes of loans (375,914) (372,407)  
New loans and liquidation, net 2,295,045 1,690,098  
Write-offs (816,890) (666,506)  
Sale of loan portfolio (33,262) (75,916)  
Exchange differences and others (1,139) 41,288  
Acquisition of business 445,781    
Balances at the end of the period 16,972,778 15,459,157 14,842,600
Consumer loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 13,326,489    
Write-offs     (760,785)
Balances at the end of the period 15,281,239 13,326,489  
Consumer loans [Member] | Stage 1 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 10,712,871 9,333,443  
Transfer to Stage 2 (624,147) (654,148)  
Transfer to Stage 3 (307,297) (203,805)  
Transfer from Stage 2 527,363 453,760  
Transfer from Stage 3 17,725 21,458  
Transfers between classes of loans (17,600) (34,064)  
New loans, liquidation and write-offs, net 1,832,590 1,766,378  
Sale of loan portfolio 0 0  
Exchange differences and others (9,896) 29,849  
Acquisition of business 91,249    
Balances at the end of the period 12,222,858 10,712,871 9,333,443
Consumer loans [Member] | Stage 1 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 276,019    
Transfer to Stage 2 (18,691)    
Transfer to Stage 3 (80,991)    
Transfer from Stage 2 90,915    
Transfer from Stage 3 16,831    
Transfers between classes of loans 1,491    
Change in PDs, LGDs, EADs 57,927    
New loans, liquidation and write-offs, net (97,213)    
Sale of loan portfolio 0    
Exchange differences and others (176)    
Acquisition of business 2,243    
Balances at the end of the period 248,355 276,019  
Consumer loans [Member] | Stage 2 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 1,920,204 1,764,494  
Transfer to Stage 1 (527,363) (453,760)  
Transfer to Stage 3 (166,708) (199,903)  
Transfer from Stage 1 624,147 654,148  
Transfer from Stage 3 22,807 24,345  
Transfers between classes of loans (1,261) (802)  
New loans, liquidation and write-offs, net 330,963 131,201  
Sale of loan portfolio 0 0  
Exchange differences and others 369 481  
Acquisition of business 7,346    
Balances at the end of the period 2,210,504 1,920,204 1,764,494
Consumer loans [Member] | Stage 2 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 500,535    
Transfer to Stage 1 (90,915)    
Transfer to Stage 3 (43,031)    
Transfer from Stage 1 18,691    
Transfer from Stage 3 21,996    
Transfers between classes of loans (80)    
Change in PDs, LGDs, EADs 257,845    
New loans, liquidation and write-offs, net (153,370)    
Exchange differences and others (19)    
Acquisition of business 1,779    
Balances at the end of the period 513,431 500,535  
Consumer loans [Member] | Stage 3 [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 700,865 832,487  
Transfer to Stage 1 (17,725) (21,458)  
Transfer to Stage 2 (22,807) (24,345)  
Transfer from Stage 1 307,297 203,805  
Transfer from Stage 2 166,708 199,903  
Transfers between classes of loans 448 (149)  
New loans, liquidation and write-offs, net (296,338) (477,389)  
Sale of loan portfolio (5,220) (13,843)  
Exchange differences and others (481) 1,854  
Acquisition of business 15,903    
Balances at the end of the period 848,650 700,865 832,487
Consumer loans [Member] | Stage 3 [Member] | Portfolio of Direct and Indirect Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 609,275    
Transfer to Stage 1 (16,831)    
Transfer to Stage 2 (21,996)    
Transfer from Stage 1 80,991    
Transfer from Stage 2 43,031    
Transfers between classes of loans 1,095    
Change in PDs, LGDs, EADs 284,403    
New loans, liquidation and write-offs, net (255,086)    
Sale of loan portfolio (3,943)    
Exchange differences and others (30,628)    
Acquisition of business 12,648    
Balances at the end of the period 702,959 609,275  
Consumer loans [Member] | Consolidated 3 Stages [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 1,385,829    
Transfers between classes of loans 2,506    
New loans and liquidation, net 275,924    
Change in PDs, LGDs, EADs 600,175    
Write-offs (781,593)    
Sale of loan portfolio (3,943)    
Exchange differences and others (30,823)    
Acquisition of business 16,670    
Balances at the end of the period 1,464,745 1,385,829  
Consumer loans [Member] | Consolidated 3 Stages [Member] | Portfolio of Direct Loans [Member]      
Disclosure of Loans, Net [Line Items]      
Balances at the beginning of the period 13,333,940 11,930,424  
Transfers between classes of loans (18,413) (35,015)  
New loans and liquidation, net 2,658,012 2,168,138  
Write-offs (790,797) (747,948)  
Sale of loan portfolio (5,220) (13,843)  
Exchange differences and others (10,008) 32,184  
Acquisition of business 114,498    
Balances at the end of the period S/ 15,282,012 S/ 13,333,940 S/ 11,930,424