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Risks and Financial Instruments - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
BRL (R$)
Customer
R$ / shares
Dec. 31, 2020
BRL (R$)
R$ / shares
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
BRL (R$)
Dec. 31, 2018
BRL (R$)
Disclosure of detailed information about financial instruments [line items]            
Net liability position R$ 1,524,991,000 R$ 1,553,435,000        
Maximum percentage of identified risk to cover by derivative financial instruments 100.00%          
Gross indebtedness R$ 16,377,643,000 17,376,216,000     R$ 14,392,722,000 R$ 15,116,139,000
Investment plan 1,883,839,000          
Cash, cash equivalents, and short-term financial investments 4,084,196,000          
Notional amount of foreign exchange hedging instruments for highly probable future transactions designated as cash flow hedge, related to notes in the foreign market | $     $ 386,787 $ 468,215    
Unrealized gain (loss) of other comprehensive income, net of deferred income and social contribution taxes 7,880,000 (315,403,000)        
Balance of foreign exchange hedging instruments designated as net investments hedge in foreign entities | $     $ 95,000 $ 95,000    
Gain (loss) recognized in other comprehensive income, net of deferred income and social contribution taxes R$ 24,064,000 R$ (73,108,000)        
Maturity of foreign exchange hedging instruments | R$ / shares R$ 10.25 R$ 8.23        
Customer concentrations risk | Customer one | Bottom of range [member]            
Disclosure of detailed information about financial instruments [line items]            
Number of customers | Customer 0          
Percentage of entity's consolidated revenue 10.00%          
Brazilian real per US dollar [member]            
Disclosure of detailed information about financial instruments [line items]            
Average foreign exchange rate 5.6514          
Later than one year [member]            
Disclosure of detailed information about financial instruments [line items]            
Gross indebtedness R$ 3,605,377,000