v3.26.1
Impairment and result on disposal of non-current assets (Details Narrative) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Sep. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Alianca Geracaode Energia S. A [Member]              
IfrsStatementLineItems [Line Items]              
Acquisition interest rate       70.00%      
Acquisition cost $ 117 $ 117          
Transaction amount $ 89 $ 89 $ 871        
Anglo American [Member]              
IfrsStatementLineItems [Line Items]              
Acquisition interest rate 15.00% 15.00%          
Acquisition cost $ 750 $ 750          
Reversal of impairment and gains (losses) on disposal of non-current assets, net 626 626          
VODC [Member]              
IfrsStatementLineItems [Line Items]              
Acquisition interest rate           50.00%  
Reversal of impairment and gains (losses) on disposal of non-current assets, net           $ 1,222  
Cash contribution           $ 600  
Other operating expenses, net 1,222 1,222          
Sale of equity interest amount 555 555          
Remeasurement fair value of remaining interest amount 555 555          
Cumulative translation adjustments amount 112 112          
PTVI [Member]              
IfrsStatementLineItems [Line Items]              
Acquisition interest rate             10.50%
Reversal of impairment and gains (losses) on disposal of non-current assets, net         $ 1,059   $ 1,059
Remeasurement fair value of remaining interest amount 657 657         657
Cumulative translation adjustments amount 1,063 1,063         1,063
NetLoss $ 661 661         $ 661
Newfoundland And Labrador Canada [Member]              
IfrsStatementLineItems [Line Items]              
Impairment loss   1,745          
Newfoundland And Labrador Canada [Member] | Nickel Operations [Member]              
IfrsStatementLineItems [Line Items]              
Impairment loss   2,405          
Reversal impairment loss   540          
Thompson Canada [Member] | Nickel Operations [Member]              
IfrsStatementLineItems [Line Items]              
Impairment loss   4,196          
Reversal impairment loss   1,405          
CGU Canada [Member] | Nickel Operations [Member]              
IfrsStatementLineItems [Line Items]              
Impairment loss   $ 1,735          
Bottom of range [member]              
IfrsStatementLineItems [Line Items]              
Projected nickel prices, percenatge 11.00%            
Top of range [member]              
IfrsStatementLineItems [Line Items]              
Projected nickel prices, percenatge 21.00%