v3.26.1
Financial and capital risk management (Tables)
12 Months Ended
Dec. 31, 2025
Notes and other explanatory information [abstract]  
Schedule of derivatives effects on statement of financial position
       
  December 31, 2025 December 31, 2024
  Assets Liabilities Assets Liabilities
Foreign exchange and interest rate risk 588 133 52 601
Commodities price risk 29 13 16 23
Embedded derivatives 1
Total 617 146 68 625
Schedule of net exposure
   
  December 31, 2025 December 31, 2024
Foreign exchange and interest rate risk (i) 455 (549)
Commodities price risk 16 (7)
Embedded derivatives (1)
Total 471 (557)

(i) Includes a positive (negative) balance of US$181 and US$(334) as of 31 December 2025 and 2024, respectively, related to transactions to mitigate foreign exchange and interest rate fluctuations on loans, borrowings and provisions related to Brumadinho and Samarco.

Schedule of effects of derivatives on income
     
  Gain (loss) recognized in the income statement
Year ended December 31, 2025 2024 2023
Foreign exchange and interest rate risk 1,605 (1,187) 900
Commodities price risk 10 (23)
Embedded derivatives 1 1 3
Total 1,616 (1,209) 903
Schedule of effects of derivatives on cash flows
     
  Financial settlement inflows (outflows)
Year ended December 31, 2025 2024 2023
Foreign exchange and interest rate risk 592 5 476
Commodities price risk (13) 6 6
Derivatives designated as cash flow hedge accounting 85
Total 579 11 567
Schedule of foreign exchange and interest rates volatility
             
  Notional Fair value Fair value by year
Flow December 31, 2025 December 31, 2024 December 31, 2025 December 31, 2024 2026 2027 2028+
Foreign Exchange and Interest Rate Derivatives US$ 9,201 US$ 11,490 455 (549) 305 64 86
Schedule of sensitivity analysis financial instruments
     
Instrument's main risk events Fair value Scenario I  (∆ of 25%) Scenario II (∆ of 50%)
R$ depreciation 455 (934) (2,324)
US$ interest rate inside Brazil decrease 455 286 90
Brazilian interest rate increase 455 101 (191)
TJLP interest rate decrease 455 453 451
IPCA index decrease 455 268 97
SOFR interest rate decrease 455 429 403
Schedule of protection program for product price
             
  Notional Fair value Fair value by year
Flow December 31, 2025 December 31, 2024 December 31, 2025 December 31, 2024 2026 2027 2028+
Brent crude oil (bbl)              
Options 22,224,999 24,050,625 (5) 11 (5)
               
Forward Freight Agreement (days)              
Freight forwards 2,070 3,240 15 (11) 15
               
Fixed price Nickel sales protection (ton)              
Nickel forwards 3,557 4,978 5 (7) 5
               
Fixed price Cobalt sales protection (tons)              
Cobalt forwards 26 1 1
Schedule of derivative financial instruments
       
Instrument Instrument's main risk events Fair value Scenario I  (∆ of 25%) Scenario II (∆ of 50%)
Brent crude oil (bbl) Decrease in fuel oil price (5) (125) (423)
Forward Freight Agreement (days) Decrease in freight price 15 2 (11)
Hedge for fixed-price nickel sales (tons) Decrease in nickel price 5 5 5
Hedge for fixed-price cobalt sales (tons) Decrease in cobalt price 1
Schedule of embedded derivatives
             
  Notional Fair value Fair value by year
Flow December 31, 2025 December 31, 2024 December 31, 2025 December 31, 2024 2026 2026 2027+
Embedded derivative (pellet price) in natural gas purchase (volume/month)              
Call options 746,667 746,667 (1)
Schedule of sensitivity analysis of other derivatives financial instruments
       
Instrument Instrument's main risk events Fair value Scenario I  (∆ of 25%) Scenario II (∆ of 50%)
Embedded derivative (pellet price) in natural gas purchase agreement (volume/month)        
Embedded derivatives - Gas purchase Pellet price increase
Schedule of effects of derivatives on other comprehensive income
     
  Gain (loss) recognized in the other comprehensive income
Year ended December 31, 2025 2024 2023
Net investments hedge 273 (500) 139
Cash flow hedge (19)
Schedule of carrying amount of the financial assets that represent the exposure to credit risk
     
  Notes December 31, 2025 December 31, 2024
Cash and cash equivalents 19(a) 7,372 4,953
Short-term investments 19(a) 194 53
Restricted cash 23 9 13
Judicial deposits   651 537
Derivative financial instruments   617 68
Investments in equity securities 23 63 54
Total   8,906 5,678
Schedule of ratings published by Moody's regarding the main financial institutions
       
  December 31, 2025 December 31, 2024
  Cash and cash equivalents and investment Derivatives Cash and cash equivalents and investment Derivatives
Aa2 721 1 391 1
A1 2,918 169 1,874 28
A2 1 520 13
A3 1,339 61 709 2
Baa1 1
Baa2 2 4
Baa3 55
Ba1 (i) 1,658 198 719 18
Ba2 (i) 872 188 788 6
  7,566 617 5,006 68

 

(i) A substantial part of the balances is held with financial institutions in Brazil which are deemed investment grade in local currency.