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Financial instruments - Derivative financial instruments, net (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
BRL (R$)
segment
Dec. 31, 2022
BRL (R$)
Dec. 31, 2021
BRL (R$)
Dec. 31, 2022
USD ($)
segment
Dec. 31, 2022
BRL (R$)
segment
Disclosure of detailed information about financial instruments [line items]          
Financial instruments designated as hedging instruments, at fair value R$ (311,445,000)       R$ (190,902,000)
Non-deliverable forward used as economic hedge instrument (4,097,000)       (6,395,000)
Call options to acquire additional interest in subsidiaries 3,553,000       23,983,000
Derivative financial instruments, net (311,989,000)       (173,314,000)
Financial instruments designated as hedging instruments, at fair value 311,445,000       R$ 190,902,000
Unrealized loss on cash flow hedge 197,188,000 R$ 261,366,000 R$ (261,366,000)    
Financial expenses, net 3,999,465,000 3,514,739,000 1,269,058,000    
Changes in the fair value of cash flow hedge R$ 64,146,000 (207,222,000) R$ (54,144,000)    
Dollar Non-deliverable Forward [Member] | Currency risk          
Disclosure of detailed information about financial instruments [line items]          
Minimum Rate Of Hedging Instrument 4.8220       5.1900
Maximum Rate Of Hedging Instrument 4.9400       5.3200
Nominal amount of hedging instrument | segment 6,460,000     65,500,000 65,500,000
Gain (loss) on hedge ineffectiveness recognised in profit or loss R$ 19,116,000 25,827,000      
Euro Non-deliverable Forward [Member] | Currency risk          
Disclosure of detailed information about financial instruments [line items]          
Minimum Rate Of Hedging Instrument 5.3208        
Maximum Rate Of Hedging Instrument 5.3715        
Nominal amount of hedging instrument | segment 570,000        
Gain (loss) on hedge ineffectiveness recognised in profit or loss R$ (447,000)        
Interest rate swap contract [member] | Interest rate risk          
Disclosure of detailed information about financial instruments [line items]          
Nominal amount of hedging instrument | segment 6,079,500,000     5,225,105,000 5,225,105,000
Gain (loss) on hedge ineffectiveness recognised in profit or loss R$ (7,328,000) R$ (9,262,000)      
Percentage of Minimum Rate Of Hedging Instrument 10.20%     9.10% 9.10%
Percentage of Maximum Rate Of Hedging Instrument 14.30%     14.30% 14.30%
Hedge Instrument Maturity May/25 April/24      
Bond Hedges          
Disclosure of detailed information about financial instruments [line items]          
Financial instruments designated as hedging instruments, at fair value R$ (324,753,000)       R$ (190,902,000)
Effective portion – Gain / (Loss) (503,987,000)        
Payments of cross currency swaps 305,990,000 R$ 274,407,000      
Financial expenses, net 459,289,000        
Changes in the fair value of cash flow hedge 64,146,000        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$248,500, CDI +2.94% | Hedged items, traded on June 23, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 50,000 R$ 248,500,000
Borrowings, adjustment to interest rate basis       2.94% 2.94%
Financial instruments designated as hedging instruments, at fair value         R$ (15,274,000)
Effective portion – Gain / (Loss) (86,656,000)        
Changes in the fair value of cash flow hedge 6,784,000        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$248,500, CDI +2.94% | Hedged items, traded on June 24, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Financial instruments designated as hedging instruments, at fair value (26,967,000)        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$247,000, CDI +2.90% | Hedged items, traded on June 24, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 50,000 R$ 247,000,000
Borrowings, adjustment to interest rate basis       2.90% 2.90%
Financial instruments designated as hedging instruments, at fair value (26,359,000)       R$ (14,836,000)
Effective portion – Gain / (Loss) (72,213,000)        
Changes in the fair value of cash flow hedge 6,958,000        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$248,500, CDI +2.90% | Hedged items, traded on June 24, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 50,000 R$ 248,500,000
Borrowings, adjustment to interest rate basis       2.90% 2.90%
Financial instruments designated as hedging instruments, at fair value (27,625,000)       R$ (15,961,000)
Effective portion – Gain / (Loss) (74,618,000)        
Changes in the fair value of cash flow hedge 7,215,000        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$375,263, CDI +2.99% | Hedged items, traded on June 30, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 75,000 R$ 375,263,000
Borrowings, adjustment to interest rate basis       2.99% 2.99%
Financial instruments designated as hedging instruments, at fair value (43,894,000)       R$ (26,179,000)
Effective portion – Gain / (Loss) (50,137,000)        
Changes in the fair value of cash flow hedge 9,994,000        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$250,700, CDI +2.99% | Hedged items, traded on June 30, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 50,000 R$ 250,700,000
Borrowings, adjustment to interest rate basis       2.99% 2.99%
Financial instruments designated as hedging instruments, at fair value (29,705,000)       R$ (17,846,000)
Effective portion – Gain / (Loss) (42,826,000)        
Changes in the fair value of cash flow hedge 8,998,000        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$250,110, CDI +2.98% | Hedged items, traded on June 30, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 50,000 R$ 250,110,000
Borrowings, adjustment to interest rate basis       2.98% 2.98%
Financial instruments designated as hedging instruments, at fair value (29,207,000)       R$ (17,403,000)
Effective portion – Gain / (Loss) (50,705,000)        
Changes in the fair value of cash flow hedge 16,871,000        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$127,353, CDI +2.99% | Hedged items, traded on July 15, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 25,000 R$ 127,353,000
Borrowings, adjustment to interest rate basis       2.99% 2.99%
Financial instruments designated as hedging instruments, at fair value (16,495,000)       R$ (10,374,000)
Effective portion – Gain / (Loss) (21,254,000)        
Changes in the fair value of cash flow hedge (7,334,000)        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$127,353, CDI +2.99%, Two | Hedged items, traded on July 15, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 25,000 R$ 127,353,000
Borrowings, adjustment to interest rate basis       2.99% 2.99%
Financial instruments designated as hedging instruments, at fair value (16,573,000)       R$ (10,455,000)
Effective portion – Gain / (Loss) (16,887,000)        
Changes in the fair value of cash flow hedge 3,114,000        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$259,890, CDI +2.96% | Hedged items, traded on July 16, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 50,000 R$ 259,890,000
Borrowings, adjustment to interest rate basis       2.96% 2.96%
Financial instruments designated as hedging instruments, at fair value (37,516,000)       R$ (24,793,000)
Effective portion – Gain / (Loss) (21,703,000)        
Changes in the fair value of cash flow hedge 14,526,000        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$131,025, CDI +3.00% | Hedged items, traded on August 6, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 25,000 R$ 131,025,000
Borrowings, adjustment to interest rate basis       3.00% 3.00%
Financial instruments designated as hedging instruments, at fair value (18,487,000)       R$ (12,101,000)
Effective portion – Gain / (Loss) (20,321,000)        
Changes in the fair value of cash flow hedge (8,295,000)        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$130,033, CDI +2.85% | Hedged items, traded on August 10, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 25,000 R$ 130,033,000
Borrowings, adjustment to interest rate basis       2.85% 2.85%
Financial instruments designated as hedging instruments, at fair value (19,391,000)       R$ (12,917,000)
Effective portion – Gain / (Loss) (17,178,000)        
Changes in the fair value of cash flow hedge 2,751,000        
Hedged items, due June 16, 2028 [Member] | Bond Hedges | Notional R$130,878, CDI +2.81% | Hedged items, traded on August 11, 2021 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 25,000 R$ 130,878,000
Borrowings, adjustment to interest rate basis       2.81% 2.81%
Financial instruments designated as hedging instruments, at fair value (19,226,000)       R$ (12,763,000)
Effective portion – Gain / (Loss) (16,181,000)        
Changes in the fair value of cash flow hedge R$ 2,564,000        
Hedged items, due November 22, 2023 [Member] | Bond Hedges | Notional R$248500 CDI +1.80% [Member] | Hedged items, traded on May 22, 2023 [Member]          
Disclosure of detailed information about financial instruments [line items]          
Notional       $ 50,000 248,500,000
Borrowings, adjustment to interest rate basis 1.80%        
Financial instruments designated as hedging instruments, at fair value R$ (13,308,000)       R$ 0
Effective portion – Gain / (Loss) (13,308,000)        
Changes in the fair value of cash flow hedge R$ 0