v3.25.2
Property, plant, and equipment (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
IfrsStatementLineItems [Line Items]    
Balance at beginning of year $ 39,984 $ 48,396
Additions (i) 2,223 2,745
Disposals and impairments (226) (102)
Assets retirement obligation 32 (147)
Depreciation, depletion and amortization (1,377) (1,416)
Transfer to held for sale (Energy Assets) (831)  
Translation adjustment 4,488 (4,894)
Balance at end of year 44,293 44,582
Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 78,093 76,351
Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (33,800) (31,769)
Land and buildings [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 8,655 10,119
Disposals and impairments (14) (5)
Depreciation, depletion and amortization (223) (225)
Transfer to held for sale (Energy Assets) (24)  
Translation adjustment 1,036 (1,139)
Transfers 474 314
Balance at end of year 9,904 9,064
Land and buildings [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 17,313 15,956
Land and buildings [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (7,409) (6,892)
Facilities [Member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 8,085 9,239
Disposals and impairments (13) (16)
Depreciation, depletion and amortization (295) (276)
Transfer to held for sale (Energy Assets) (306)  
Translation adjustment 976 (1,098)
Transfers 763 504
Balance at end of year 9,210 8,353
Facilities [Member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 15,167 13,724
Facilities [Member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (5,957) (5,371)
Machinery [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 4,038 4,450
Disposals and impairments (3) (7)
Depreciation, depletion and amortization (302) (351)
Transfer to held for sale (Energy Assets) (358)  
Translation adjustment 395 (397)
Transfers 763 284
Balance at end of year 4,533 3,979
Machinery [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 10,798 9,706
Machinery [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (6,265) (5,727)
Tangible exploration and evaluation assets [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 4,547 6,925
Disposals and impairments (7)  
Assets retirement obligation 32 (147)
Depreciation, depletion and amortization (218) (226)
Transfer to held for sale (Energy Assets) (1)  
Translation adjustment 400 (517)
Transfers (800) 158
Balance at end of year 3,953 6,193
Tangible exploration and evaluation assets [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 12,320 14,734
Tangible exploration and evaluation assets [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (8,367) (8,541)
Railway Equipment [Member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 2,088 2,612
Disposals and impairments (7) (3)
Depreciation, depletion and amortization (75) (81)
Translation adjustment 285 (332)
Transfers 116 50
Balance at end of year 2,407 2,246
Railway Equipment [Member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 4,239 3,917
Railway Equipment [Member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (1,832) (1,671)
Right-of-use assets [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 660 1,359
Additions (i) 34 (4)
Depreciation, depletion and amortization (76) (93)
Transfer to held for sale (Energy Assets) (37)  
Translation adjustment 32 (37)
Balance at end of year 613 1,225
Right-of-use assets [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 1,500 2,089
Right-of-use assets [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (887) (864)
Other property, plant and equipment [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 2,192 2,484
Disposals and impairments (1) (1)
Depreciation, depletion and amortization (188) (164)
Transfer to held for sale (Energy Assets) (48)  
Translation adjustment 220 (220)
Transfers 228 127
Balance at end of year 2,403 2,226
Other property, plant and equipment [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost 5,486 4,929
Other property, plant and equipment [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated depreciation (3,083) (2,703)
Construction in progress [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 9,719 11,208
Additions (i) 2,189 2,749
Disposals and impairments (181) (70)
Transfer to held for sale (Energy Assets) (57)  
Translation adjustment 1,144 (1,154)
Transfers (1,544) (1,437)
Balance at end of year 11,270 11,296
Construction in progress [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Property, plant and equipment, cost $ 11,270 $ 11,296