TAX SITUATION - Income Tax Expense (Details) - PEN (S/)
S/ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Current -      
Current tax expense (income) S/ 1,675,617 S/ 1,429,808 S/ 1,396,842
Deferred tax expense (income) (52,540) 91,101 (3,556)
Total 1,623,077 1,520,909 1,393,286
In Peru      
Current -      
Current tax expense (income) 1,469,497 1,315,896 1,262,302
Deferred tax expense (income) (30,967) 87,952 (18,264)
In other countries      
Current -      
Current tax expense (income) 206,120 113,912 134,540
Deferred tax expense (income) S/ (21,573) S/ 3,149 S/ 14,708