v3.26.1
Expenses by Nature - Detailed Information about Expenses by Nature (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of expenses [line items]      
Salaries and social security taxes $ 1,477 $ 1,550 $ 1,215
Fees and compensation for services 383 374 323
Other personnel expenses 314 351 272
Taxes, charges and contributions 1,128 1,210 919
Royalties, easements and fees 1,017 1,137 1,013
Insurance 77 102 87
Rental of real estate and equipment 230 [1] 239 [2] 196 [3]
Survey expenses 25 36 16
Depreciation of property, plant and equipment [4] 2,857 2,446 3,016
Amortization of intangible assets 61 43 37
Depreciation of right-of-use assets 286 270 220
Industrial inputs, consumable materials and supplies 490 545 538
Operation services and other service contracts 256 [1] 733 [2] 610 [3]
Preservation, repair and maintenance 1,494 [1] 1,806 [2] 1,467 [3]
Unproductive exploratory drillings 32 133 21
Transportation, products and charges 966 [1] 1,025 [2] 1,012 [3]
Provision for doubtful trade receivables 75 91 18
Publicity and advertising expenses 102 100 92
Fuel, gas, energy and miscellaneous 270 [1] 268 [2] 201 [3]
Total 11,540 12,459 11,273
Production costs [Member]      
Disclosure of expenses [line items]      
Salaries and social security taxes 1,009 [5] 1,066 [6] 790 [7]
Fees and compensation for services 88 [5] 71 [6] 50 [7]
Other personnel expenses 265 [5] 302 [6] 232 [7]
Taxes, charges and contributions 136 [5] 180 [6] 130 [7]
Royalties, easements and fees 1,011 [5] 1,133 [6] 1,009 [7]
Insurance 70 [5] 93 [6] 81 [7]
Rental of real estate and equipment 214 [5] 222 [6] 179 [7]
Depreciation of property, plant and equipment 2,708 [5] 2,303 [6] 2,886 [7]
Amortization of intangible assets 40 [5] 28 [6] 30 [7]
Depreciation of right-of-use assets 274 [5] 258 [6] 209 [7]
Industrial inputs, consumable materials and supplies 469 [5] 528 [6] 521 [7]
Operation services and other service contracts 168 [5] 649 [6] 535 [7]
Preservation, repair and maintenance 1,393 [5] 1,706 [6] 1,395 [7]
Transportation, products and charges 503 [5] 551 [6] 521 [7]
Fuel, gas, energy and miscellaneous 158 [5] 162 [6] 135 [7]
Total 8,506 [5] 9,252 [6] 8,703 [7]
Administrative expenses [Member]      
Disclosure of expenses [line items]      
Salaries and social security taxes 301 [8] 321 [9] 276
Fees and compensation for services 253 [8] 257 [9] 236
Other personnel expenses 33 [8] 30 [9] 26
Taxes, charges and contributions 11 [8] 24 [9] 24
Insurance 3 [8] 5 [9] 3
Rental of real estate and equipment 1 [8] 1 [9] 1
Depreciation of property, plant and equipment 46 [8] 46 [9] 43
Amortization of intangible assets 21 [8] 14 [9] 7
Industrial inputs, consumable materials and supplies 6 [8] 4 [9] 5
Operation services and other service contracts 14 [8] 13 [9] 10
Preservation, repair and maintenance 34 [8] 38 [9] 29
Provision for doubtful trade receivables 21 [8] 25 [9]  
Publicity and advertising expenses 62 [8] 45 [9] 36
Fuel, gas, energy and miscellaneous 24 [8] 13 [9] 9
Total 830 [8] 836 [9] 705
Selling expenses [Member]      
Disclosure of expenses [line items]      
Salaries and social security taxes 158 149 136
Fees and compensation for services 42 46 37
Other personnel expenses 13 15 13
Taxes, charges and contributions 981 [10] 1,006 [11] 765 [12]
Royalties, easements and fees 2 2 2
Insurance 4 4 3
Rental of real estate and equipment 15 16 16
Depreciation of property, plant and equipment 103 97 87
Amortization of intangible assets 0 1 0
Depreciation of right-of-use assets 12 12 11
Industrial inputs, consumable materials and supplies 12 10 12
Operation services and other service contracts 61 54 59
Preservation, repair and maintenance 45 42 43
Transportation, products and charges 463 474 491
Provision for doubtful trade receivables 54 66 18
Publicity and advertising expenses 40 55 56
Fuel, gas, energy and miscellaneous 83 83 55
Total 2,088 2,132 1,804
Exploration expenses [Member]      
Disclosure of expenses [line items]      
Salaries and social security taxes 9 14 13
Other personnel expenses 3 4 1
Royalties, easements and fees 4 2 2
Survey expenses 25 36 16
Industrial inputs, consumable materials and supplies 3 3  
Operation services and other service contracts 13 17 6
Preservation, repair and maintenance 22 20  
Unproductive exploratory drillings 32 133 21
Fuel, gas, energy and miscellaneous 5 10 2
Total $ 116 $ 239 $ 61
[1] Includes 22 and 66 corresponding to short-term leases and to the lease charge relating to the underlying asset use or performance, respectively.
[2] Includes 43 and 92 corresponding to short-term leases and to the lease charge relating to the underlying asset use or performance, respectively.
[3] Includes 75 and 104 corresponding to short-term leases and to the lease charge relating to the underlying asset use or performance, respectively.
[4] Includes depreciation of charges for impairment of property, plant and equipment.
[5] Includes 28 corresponding to research and development activities.
[6] Includes 40 corresponding to research and development activities.
[7] Includes 23 corresponding to research and development activities.
[8] Includes 25 charged to the “Cash-settled share-based payments provision” account of the “Salaries and social security” line item in the statement of financial position, relating to the Value Generation Plan.
[9] Includes 33 charged to the “Cash-settled share-based payments provision” account of the “Salaries and social security” line item in the statement of financial position, relating to the Value Generation Plan.
[10] Includes 245 corresponding to export withholdings and 549 corresponding to turnover tax.
[11] Includes 237 corresponding to export withholdings and 594 corresponding to turnover tax.
[12] Includes 89 corresponding to export withholdings and 541 corresponding to turnover tax.