v3.26.1
Property, plant, and equipment (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
IfrsStatementLineItems [Line Items]    
Balance at beginning of year $ 39,984 $ 48,396
Additions (i) 5,469 5,886
Interest capitalization 22 36
Disposals (594) (401)
Impairments (1,843) (2,210)
Assets retirement obligation 170 (12)
Depreciation, depletion and amortization (2,916) (2,813)
Acquisition of Alianca Energia   573
Deconsolidation of VODC   (657)
Translation adjustment 4,164 (8,814)
Balance at end of year 43,625 39,984
Transfer to asset held for sale (831)  
Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 80,800 70,776
Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (37,175) (30,792)
Land and buildings [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 8,655 10,119
Disposals (21) (28)
Depreciation, depletion and amortization (480) (438)
Acquisition of Alianca Energia   27
Translation adjustment 974 (1,991)
Transfers 1,393 966
Balance at end of year 10,497 8,655
Transfer to asset held for sale (24)  
Land and buildings [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 18,107 15,266
Land and buildings [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (7,610) (6,611)
Facilities [Member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 8,085 9,239
Disposals (37) (47)
Impairments (1,167) (335)
Depreciation, depletion and amortization (602) (547)
Acquisition of Alianca Energia   87
Deconsolidation of VODC   (9)
Translation adjustment 905 (1,945)
Transfers 1,604 1,642
Balance at end of year 8,482 8,085
Transfer to asset held for sale (306)  
Facilities [Member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 14,638 13,539
Facilities [Member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (6,156) (5,454)
Machinery [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 4,038 4,450
Disposals (4) (31)
Impairments (362) (57)
Depreciation, depletion and amortization (641) (691)
Acquisition of Alianca Energia   329
Deconsolidation of VODC   (98)
Translation adjustment 366 (736)
Transfers 1,503 872
Balance at end of year 4,542 4,038
Transfer to asset held for sale (358)  
Machinery [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 11,056 9,681
Machinery [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (6,514) (5,643)
Tangible exploration and evaluation assets [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 4,547 6,925
Disposals (7) (9)
Impairments (159) (1,627)
Assets retirement obligation 170 (12)
Depreciation, depletion and amortization (471) (474)
Acquisition of Alianca Energia   2
Deconsolidation of VODC   (9)
Translation adjustment 377 (964)
Transfers (189) 715
Balance at end of year 4,267 4,547
Transfer to asset held for sale (1)  
Tangible exploration and evaluation assets [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 15,112 12,715
Tangible exploration and evaluation assets [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (10,845) (8,168)
Railway Equipment [Member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 2,088 2,612
Disposals (13) (5)
Impairments   (3)
Depreciation, depletion and amortization (158) (153)
Translation adjustment 267 (565)
Transfers 205 202
Balance at end of year 2,389 2,088
Railway Equipment [Member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 4,247 3,643
Railway Equipment [Member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (1,858) (1,555)
Right-of-use assets [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 660 1,359
Additions (i)   83
Depreciation, depletion and amortization (141) (187)
Acquisition of Alianca Energia   4
Deconsolidation of VODC   (525)
Translation adjustment   (74)
Balance at end of year 607 660
Transfer to asset held for sale (37)  
Impairment 29  
Right-of-use assets [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 1,556 1,412
Right-of-use assets [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (949) (752)
Other property, plant and equipment [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 2,192 2,484
Disposals (5) (3)
Depreciation, depletion and amortization (423) (323)
Acquisition of Alianca Energia   51
Translation adjustment 201 (409)
Transfers 467 392
Balance at end of year 2,384 2,192
Transfer to asset held for sale (48)  
Other property, plant and equipment [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 5,627 4,801
Other property, plant and equipment [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (3,243) (2,609)
Construction in progress [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 9,719 11,208
Additions (i) 5,373 5,803
Interest capitalization 22 36
Disposals (507) (278)
Impairments (155) (188)
Acquisition of Alianca Energia   73
Deconsolidation of VODC   (16)
Translation adjustment 1,045 (2,130)
Transfers (4,983) (4,789)
Balance at end of year 10,457 9,719
Transfer to asset held for sale (57)  
Construction in progress [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost $ 10,457 $ 9,719