XML 214 R224.htm IDEA: XBRL DOCUMENT v3.20.1
Risk and Capital Management - Summary of Risk-Weighted Assets of Market Risk (RWAMINT) (Detail) - BRL (R$)
R$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure of risk management strategy related to hedge accounting [line items]    
Market risk weighted assets R$ 25,002 R$ 22,871
Fixed rate denominated in reais 24,724 30,286
Operations subject to commodity price variation 1,087 389
Operations subject to stock price variation 1,162 362
Operations subject to risk exposures in gold, foreign currency and foreign exchange variation 1,355 6,801
Internal credit grades [member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Market risk weighted assets (3,327) (7,568)
Fixed rate denominated in Real [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Fixed rate denominated in reais 5,273 2,026
Foreign currency coupon [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Fixed rate denominated in reais 13,118 19,633
Price index coupon [member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Fixed rate denominated in reais 6,333 8,627
RWAMPAD [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Market risk weighted assets 28,328 37,838
Minimum Market Risk Weighted Assets-Standard Aproach 22,663 30,270
RWAMINT [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Market risk weighted assets R$ 25,002 R$ 30,270