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Risks and Financial Instruments - Credit risk exposure (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about financial instruments [line items]    
Accounting balance R$ 5,459,359 R$ 5,767,961
Allowance for expected credit losses 468,850 496,040
Current [member]    
Disclosure of detailed information about financial instruments [line items]    
Accounting balance 4,412,278 4,756,388
Allowance for expected credit losses 24,131 22,752
Less than 30 days [member]    
Disclosure of detailed information about financial instruments [line items]    
Accounting balance 61,451 29,817
Allowance for expected credit losses 4,683 2,230
31 to 60 days [member]    
Disclosure of detailed information about financial instruments [line items]    
Accounting balance 57,753 22,633
Allowance for expected credit losses 2,841 2,516
61-90 days [member]    
Disclosure of detailed information about financial instruments [line items]    
Accounting balance 23,845 32,522
Allowance for expected credit losses 3,646 8,617
91-180 days [member]    
Disclosure of detailed information about financial instruments [line items]    
Accounting balance 47,430 58,529
Allowance for expected credit losses 15,609 20,159
More than 180 days [member]    
Disclosure of detailed information about financial instruments [line items]    
Accounting balance 856,602 868,072
Allowance for expected credit losses R$ 417,940 R$ 439,766
Weighted average [member] | Current [member]    
Disclosure of detailed information about financial instruments [line items]    
Expected credit loss rate 0.50% 0.50%
Weighted average [member] | Less than 30 days [member]    
Disclosure of detailed information about financial instruments [line items]    
Expected credit loss rate 17.60% 7.50%
Weighted average [member] | 31 to 60 days [member]    
Disclosure of detailed information about financial instruments [line items]    
Expected credit loss rate 4.90% 11.10%
Weighted average [member] | 61-90 days [member]    
Disclosure of detailed information about financial instruments [line items]    
Expected credit loss rate 15.30% 26.50%
Weighted average [member] | 91-180 days [member]    
Disclosure of detailed information about financial instruments [line items]    
Expected credit loss rate 32.90% 34.40%
Weighted average [member] | More than 180 days [member]    
Disclosure of detailed information about financial instruments [line items]    
Expected credit loss rate 48.80% 50.70%