v3.26.1
Provisions - Summary of Changes in Group's Provisions (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Non current [member]      
Disclosure of provisions [line items]      
Provisions beginning balance $ 1,084 $ 2,660 $ 2,571
Increases charged to expenses 297 426 433
Decreases charged to income (44) (13) (38)
Increases from business combinations 14 0 0
Applications due to utilization (1) (3) (1)
Net exchange and translation differences (28) (14) (162)
Reclassifications and other movements (712) [1] (1,970) [2] (142)
Result from net monetary position [3] 0 (2) (1)
Provisions ending balance 610 1,084 2,660
Non current [member] | Provision for lawsuits and contingencies [member]      
Disclosure of provisions [line items]      
Provisions beginning balance 129 66 571
Increases charged to expenses 41 105 89
Decreases charged to income (7) (5) (26)
Increases from business combinations 2    
Applications due to utilization (1) (3) (1)
Net exchange and translation differences (28) (14) (110)
Reclassifications and other movements (25) [1] (18) [2] (456) [4]
Result from net monetary position [3] 0 (2) (1)
Provisions ending balance 111 129 66
Non current [member] | Provision for environmental liabilities [member]      
Disclosure of provisions [line items]      
Provisions beginning balance 99 48 96
Increases charged to expenses 142 187 80
Decreases charged to income (1) (1) 0
Net exchange and translation differences 0 0 (52)
Reclassifications and other movements (172) [1] (135) [2] (76)
Provisions ending balance 68 99 48
Non current [member] | Provision for Hydrocarbon Wells Abandonment Obligations [member]      
Disclosure of provisions [line items]      
Provisions beginning balance 856 2,546 1,904
Increases charged to expenses 114 134 264
Decreases charged to income (36) (7) (12)
Increases from business combinations 12    
Net exchange and translation differences 0 0 0
Reclassifications and other movements [5] (515) [1] (1,817) [2] 390
Provisions ending balance 431 856 2,546
Current [member]      
Disclosure of provisions [line items]      
Provisions beginning balance 116 181 199
Increases charged to expenses 0 0 3
Decreases charged to income 0 0 (6)
Increases from business combinations 0 0 0
Applications due to utilization (139) (119) (490)
Net exchange and translation differences (1) (7) (39)
Reclassifications and other movements 253 [1] 61 [2] 514
Provisions ending balance 229 116 181
Current [member] | Provision for lawsuits and contingencies [member]      
Disclosure of provisions [line items]      
Provisions beginning balance 21 21 22
Increases charged to expenses 0 0 3
Decreases charged to income 0 0 (6)
Applications due to utilization (25) (17) (318) [6]
Net exchange and translation differences (1) 0 (1)
Reclassifications and other movements 25 [1] 17 [2] 321
Provisions ending balance 20 21 21
Current [member] | Provision for environmental liabilities [member]      
Disclosure of provisions [line items]      
Provisions beginning balance 36 34 46
Applications due to utilization (92) (72) (50)
Net exchange and translation differences 0 (7) (38)
Reclassifications and other movements 174 [1] 81 [2] 76
Provisions ending balance 118 36 34
Current [member] | Provision for Hydrocarbon Wells Abandonment Obligations [member]      
Disclosure of provisions [line items]      
Provisions beginning balance 59 126 131
Applications due to utilization (22) (30) (122)
Net exchange and translation differences 0 0 0
Reclassifications and other movements [5] 54 [1] (37) [2] 117
Provisions ending balance $ 91 $ 59 $ 126
[1] Includes 242 and 4 corresponding to the provisions for hydrocarbon wells abandonment obligations and for environmental liabilities, respectively, related to the “Cerro Fortunoso”, “Valle del Río Grande” and “Manantiales Behr” exploitation concessions within the context of the Optimization plan of the conventional Upstream portfolio reclassified to the “Liabilities directly associated with assets held for sale” line item in the statement of financial position, see Notes 2.b.13) and 11.a).
[2] Includes 2,023 and 54 corresponding to the provisions for hydrocarbon wells abandonment obligations and for environmental liabilities, respectively, related to the Mature Fields Project reclassified to the “Liabilities directly associated with assets held for sale” line item in the statement of financial position, see Notes 2.b.13) and 11.a).
[3] Includes the adjustment for inflation of opening balances of provisions of subsidiaries with the peso as functional currency which was charged to “Other comprehensive income” in the statement of comprehensive income and the adjustment for inflation of the fiscal year, which was charged to net profit or loss in the statement of comprehensive income.
[4] Includes 134 reclassified as “Other liabilities” in the statement of financial position due to the settlement agreement entered with Transportadora de Gas del Norte S.A. for claims related to restrictions in the natural gas market for the period from 2007 to 2010 and 286 reclassified as current “Provision for lawsuits and contingencies” due to the settlement and release agreement (the “Trust Settlement Agreement”) which provides for the full release and discharge of the Group from all claims associated with issues relating to the entities of the Maxus Energy Corporation group (“Maxus”).
[5] Includes (219), 169 and 494 associated with the annual recalculation of costs of hydrocarbon wells abandonment, which are recognized under “Property, plant, and equipment” line item in the statement of financial position (see Note 8) for the years ended December 31, 2025, 2024 and 2023, respectively.
[6] Includes the payment of the amount for the Trust Settlement Agreement for issues related to Maxus.