v3.26.3
Information by operating segment (Details 1) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
IfrsStatementLineItems [Line Items]        
Stoppages for asset maintenance and pre-operating expenses $ (638) $ (660) $ (1,282) $ (1,295)
Pension and medical benefits - retirees (401) (324) (786) (639)
Variable compensation programs (375) (305) (721) (595)
Gains (losses) with legal, administrative and arbitration proceedings (347) (125) (480) (326)
Results on disposal/write-offs of assets 40 14 115 71
Results from co-participation agreements in bid areas 87 (20) 205 50
Results of non-core activities 136 126 265 224
Early termination and changes to cash flow estimates of leases 149 144 289 301
Others 54 (138) 25 (120)
Total (1,131) (2,218) (2,184) (3,108)
Exploration And Production [Member]        
IfrsStatementLineItems [Line Items]        
Stoppages for asset maintenance and pre-operating expenses (589) (600) (1,159) (1,113)
Pension and medical benefits - retirees
Variable compensation programs (152) (137) (310) (271)
Gains (losses) with legal, administrative and arbitration proceedings (254) 6 (100) (106)
Gains with commodity derivatives
Results on disposal/write-offs of assets 9 (18) 51 14
Results from co-participation agreements in bid areas 87 (20) 205 50
Results of non-core activities 125 120 249 222
Early termination and changes to cash flow estimates of leases 158 149 287 300
Reimbursements from E&P partnership operations 249 (81) 381 65
Others (4) (761) 4 (704)
Total (371) (1,342) (392) (1,543)
Refining Transportation And Marketing [Member]        
IfrsStatementLineItems [Line Items]        
Stoppages for asset maintenance and pre-operating expenses (34) (29) (93) (127)
Pension and medical benefits - retirees
Variable compensation programs (117) (74) (197) (138)
Gains (losses) with legal, administrative and arbitration proceedings (51) (38) (144) (67)
Gains with commodity derivatives (14) 3 (142) 4
Results on disposal/write-offs of assets 14 1 7
Results from co-participation agreements in bid areas
Results of non-core activities 4 3 4 (5)
Early termination and changes to cash flow estimates of leases (6) (3) 5 (4)
Reimbursements from E&P partnership operations
Others (20) (51) (51) (53)
Total (224) (188) (611) (390)
Gas And Low Carbon Energies [Member]        
IfrsStatementLineItems [Line Items]        
Stoppages for asset maintenance and pre-operating expenses (13) (27) (24) (47)
Pension and medical benefits - retirees
Variable compensation programs (15) (16) (32) (31)
Gains (losses) with legal, administrative and arbitration proceedings (1) (28) (3) (30)
Gains with commodity derivatives 4 6 4 7
Results on disposal/write-offs of assets 4 14 6 16
Results from co-participation agreements in bid areas
Results of non-core activities 1 1 1
Early termination and changes to cash flow estimates of leases (5) (5) 1
Reimbursements from E&P partnership operations
Others (29) (71) (71) (133)
Total (54) (122) (124) (216)
Corporate And Other Business [Member]        
IfrsStatementLineItems [Line Items]        
Stoppages for asset maintenance and pre-operating expenses (2) (4) (6) (8)
Pension and medical benefits - retirees (401) (324) (786) (639)
Variable compensation programs (91) (78) (182) (155)
Gains (losses) with legal, administrative and arbitration proceedings (41) (65) (233) (123)
Gains with commodity derivatives
Results on disposal/write-offs of assets 13 17 51 41
Results from co-participation agreements in bid areas
Results of non-core activities 6 3 11 6
Early termination and changes to cash flow estimates of leases 2 (2) 2 4
Reimbursements from E&P partnership operations
Others 32 (113) 86 (85)
Total (482) (566) (1,057) (959)
Operating Segment [Member]        
IfrsStatementLineItems [Line Items]        
Stoppages for asset maintenance and pre-operating expenses (638) (660) (1,282) (1,295)
Pension and medical benefits - retirees (401) (324) (786) (639)
Variable compensation programs (375) (305) (721) (595)
Gains (losses) with legal, administrative and arbitration proceedings (347) (125) (480) (326)
Gains with commodity derivatives (10) 9 (138) 11
Results on disposal/write-offs of assets 40 14 115 71
Results from co-participation agreements in bid areas 87 (20) 205 50
Results of non-core activities 136 126 265 224
Early termination and changes to cash flow estimates of leases 149 144 289 301
Reimbursements from E&P partnership operations 249 (81) 381 65
Others (21) (996) (32) (975)
Total $ (1,131) $ (2,218) $ (2,184) $ (3,108)