XML 255 R186.htm IDEA: XBRL DOCUMENT v3.20.1
Fair Value of Financial Instruments - Summary of Changes in Balance Sheet for Financial Instruments Classified by Level 3 Fair Value Hierarchy (Detail) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance R$ 83 R$ 77  
Fair value, Ending balance 76,660 49,323  
Fair value, Ending balance 322,929 286,646  
Total Gains or Losses (Unrealized)   1  
Fair value, Beginning balance 23,466    
Fair value, Ending balance 41,854 23,466  
Fair value, Beginning balance (27,519)    
Fair value, Ending balance (47,828) (27,519)  
Gains (losses) on financial assets measured at fair value through other comprehensive income, net of tax 628 (254) R$ (128)
Brazilian government securities [member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Ending balance 50,732 27,839  
Fair value, Ending balance 219,611 217,058  
Level 3 [Member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance 2,833    
Fair value, Beginning balance   3,947  
Total gains or losses (realized / unrealized), Recognized in the result 43    
Total gains or losses (realized / unrealized), Recognized in other comprehensive income (47)    
Total gains or losses (realized / unrealized), Recognized in other comprehensive income   0  
Purchases 76    
Purchases   90  
Settlements (68)    
Settlements   (353)  
Transfers in and / or out of Level 30 0  
Transfers in and / or out of Level   (474)  
Fair value, Ending balance 34    
Fair value, Ending balance   2,833  
Total gains or losses (realized / unrealized),Recognized in the result (1,300) (377)  
Purchases 1,755    
Settlements (907)    
Transfers in and / or out of Level (662)    
Fair value, Ending balance 1,719 2,833  
Total Gains or Losses (Unrealized) (307) (618)  
Fair value, Beginning balance 142 436  
Total gains or losses (realized / unrealized), Recognized in the result (78) (3)  
Purchases 274 205  
Settlements (156) (254)  
Transfers in and / or out of Level (79) (242)  
Fair value, Ending balance 103 142 436
Total Gains or Losses (Unrealized) (1) 61  
Fair value, Beginning balance (26) (103)  
Total gains or losses (realized / unrealized), Recognized in the result (17) 40  
Purchases (196) (148)  
Settlements 172 141  
Transfers in and / or out of Level (18) 44  
Fair value, Ending balance (85) (26) (103)
Total Gains or Losses (Unrealized) (2) 6  
Gains (losses) on financial assets measured at fair value through other comprehensive income, net of tax (2)    
Level 3 [Member] | Debentures [member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Gains (losses) on financial assets measured at fair value through other comprehensive income, net of tax 1    
Level 3 [Member] | Eurobonds and others [member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Gains (losses) on financial assets measured at fair value through other comprehensive income, net of tax (3)    
Level 3 [Member] | Swap [member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance 90 369  
Total gains or losses (realized / unrealized), Recognized in the result 21 (5)  
Purchases 2    
Settlements (2) (30)  
Transfers in and / or out of Level (79) (244)  
Fair value, Ending balance 32 90 369
Total Gains or Losses (Unrealized) 31 61  
Fair value, Beginning balance (3) (102)  
Total gains or losses (realized / unrealized), Recognized in the result (51) (37)  
Purchases (10)    
Settlements 36 92  
Transfers in and / or out of Level (18) 44  
Fair value, Ending balance (46) (3) (102)
Total Gains or Losses (Unrealized) (17) (3)  
Level 3 [Member] | Other derivative financial instruments [Member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance   1  
Settlements   (1)  
Fair value, Ending balance     1
Total gains or losses (realized / unrealized), Recognized in the result 34    
Purchases (186)    
Settlements 136    
Fair value, Ending balance (39)    
Total Gains or Losses (Unrealized) 15    
Level 3 [Member] | Options [Member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance 52 66  
Total gains or losses (realized / unrealized), Recognized in the result (99) 2  
Purchases 272 205  
Settlements (154) (223)  
Transfers in and / or out of Level   2  
Fair value, Ending balance 71 52 66
Total Gains or Losses (Unrealized) (32)    
Fair value, Beginning balance (23) (1)  
Total gains or losses (realized / unrealized), Recognized in the result   77  
Purchases   (148)  
Settlements   49  
Fair value, Ending balance   (23) R$ (1)
Total Gains or Losses (Unrealized)   9  
Level 3 [Member] | Brazilian government securities [member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance   1  
Fair value, Ending balance 0    
Fair value, Ending balance 0    
Total gains or losses (realized / unrealized),Recognized in the result   (1)  
Level 3 [Member] | Corporate securities [member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance 2,833    
Fair value, Beginning balance   3,946  
Total gains or losses (realized / unrealized), Recognized in the result 43    
Total gains or losses (realized / unrealized), Recognized in other comprehensive income (47) 0  
Total gains or losses (realized / unrealized), Recognized in other comprehensive income   0  
Purchases 76    
Purchases   90  
Settlements (68)    
Settlements   (353)  
Transfers in and / or out of Level 30    
Transfers in and / or out of Level   (474)  
Fair value, Ending balance 34    
Fair value, Ending balance   2,833  
Total gains or losses (realized / unrealized),Recognized in the result (1,300) (376)  
Purchases 1,755    
Settlements (907)    
Transfers in and / or out of Level (662)    
Fair value, Ending balance 1,719 2,833  
Total Gains or Losses (Unrealized) (307) (618)  
Gains (losses) on financial assets measured at fair value through other comprehensive income, net of tax (2)    
Level 3 [Member] | Corporate securities [member] | Shares [Member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance 1,268    
Fair value, Beginning balance   2,019  
Total gains or losses (realized / unrealized), Recognized in other comprehensive income 0    
Settlements   (203)  
Transfers in and / or out of Level   (582)  
Fair value, Ending balance   1,268  
Total gains or losses (realized / unrealized),Recognized in the result (285) 34  
Total gains or losses (realized / unrealized), Recognized in other comprehensive income   0  
Transfers in and / or out of Level (983)    
Fair value, Ending balance 0 1,268  
Total Gains or Losses (Unrealized)   (442)  
Level 3 [Member] | Corporate securities [member] | Real estate receivables certificates [member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance 1,411    
Fair value, Beginning balance   1,795  
Total gains or losses (realized / unrealized), Recognized in other comprehensive income   0  
Purchases 26    
Purchases   57  
Settlements   (89)  
Transfers in and / or out of Level   7  
Fair value, Ending balance 26    
Fair value, Ending balance   1,411  
Total gains or losses (realized / unrealized),Recognized in the result (487) (359)  
Total gains or losses (realized / unrealized), Recognized in other comprehensive income 0    
Purchases 573    
Settlements (53)    
Fair value, Ending balance 1,444 1,411  
Total Gains or Losses (Unrealized) 29 19  
Level 3 [Member] | Corporate securities [member] | Debentures [member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance 85    
Fair value, Beginning balance   122  
Total gains or losses (realized / unrealized), Recognized in the result (2)    
Total gains or losses (realized / unrealized), Recognized in other comprehensive income 6    
Total gains or losses (realized / unrealized), Recognized in other comprehensive income 0    
Purchases 50    
Settlements (54)    
Settlements   (53)  
Transfers in and / or out of Level 0    
Transfers in and / or out of Level   57  
Fair value, Ending balance 0    
Fair value, Ending balance   85  
Total gains or losses (realized / unrealized),Recognized in the result (504) (41)  
Total gains or losses (realized / unrealized), Recognized in other comprehensive income   0  
Purchases 604    
Settlements (222)    
Transfers in and / or out of Level 262    
Fair value, Ending balance 225 85  
Total Gains or Losses (Unrealized) (336) (196)  
Level 3 [Member] | Corporate securities [member] | Eurobonds and others [member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance 31    
Total gains or losses (realized / unrealized), Recognized in the result 45    
Total gains or losses (realized / unrealized), Recognized in other comprehensive income (53)    
Total gains or losses (realized / unrealized), Recognized in other comprehensive income   0  
Purchases   20  
Settlements (14)    
Settlements   (2)  
Transfers in and / or out of Level 30    
Transfers in and / or out of Level   11  
Fair value, Ending balance 8    
Fair value, Ending balance   31  
Total gains or losses (realized / unrealized),Recognized in the result (4) 2  
Total gains or losses (realized / unrealized), Recognized in other comprehensive income 0    
Purchases 3    
Settlements (51)    
Transfers in and / or out of Level 28    
Fair value, Ending balance 7 31  
Level 3 [Member] | Corporate securities [member] | Other [Member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance 33    
Fair value, Beginning balance   10  
Purchases   13  
Settlements   (6)  
Transfers in and / or out of Level 28    
Fair value, Ending balance   33  
Total gains or losses (realized / unrealized),Recognized in the result (26) (12)  
Total gains or losses (realized / unrealized), Recognized in other comprehensive income   0  
Purchases 567    
Settlements (575)    
Transfers in and / or out of Level 31    
Fair value, Ending balance 30 33  
Level 3 [Member] | Corporate securities [member] | Financial credit bills [member]      
Disclosure Of Fair Value Gains And Losses Of Derivative Financial Instruments [Line Items]      
Fair value, Beginning balance 5    
Transfers in and / or out of Level   5  
Fair value, Ending balance   5  
Total gains or losses (realized / unrealized),Recognized in the result 6    
Total gains or losses (realized / unrealized), Recognized in other comprehensive income 0    
Purchases 8    
Settlements (6)    
Fair value, Ending balance R$ 13 R$ 5