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Financial Risk Management - Schedule of Assets and Liabilities Measured at Fair Value (Detail) - PEN (S/)
S/ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Financial liabilities    
Derivatives used for hedging S/ 1,831,079 S/ 1,814,637
Level 2 of fair value hierarchy [member] | Derivatives used for hedging [member]    
Financial liabilities    
Derivatives used for hedging   S/ 52