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Property Plant And Equipment - Summary of Property Plant And Equipment (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year $ 40,791  
At the end of the financial year 42,636 $ 40,791
Gross carrying amount [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the end of the financial year 1,407  
Property Plants and Equipments [Member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year 40,791  
At the end of the financial year 42,636 40,791
Property Plants and Equipments [Member] | Gross carrying amount [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year 40,791 39,919
Acquisitions through business combinations [1] 2,303  
Additions 5,221 [2] 6,595
Disposals at written down value (1,185) [3] (10)
Depreciation and amortisation (4,523) (3,956)
Impairment losses [4]   (1,440)
Completions and transfers 29 [5] 304
Transfer to assets held for sale   (621)
At the end of the financial year 42,636 40,791
Property Plants and Equipments [Member] | Historical Cost [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year 70,439  
At the end of the financial year 76,966 70,439
Property Plants and Equipments [Member] | Accumulated depreciation, amortisation and impairment [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year (29,648)  
At the end of the financial year (34,330) (29,648)
Property Plants and Equipments [Member] | Land and buildings [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year 701  
At the end of the financial year 734 701
Property Plants and Equipments [Member] | Land and buildings [member] | Gross carrying amount [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year 701 840
Acquisitions through business combinations [1] 92  
Disposals at written down value (3) [3] (8)
Depreciation and amortisation (56) (67)
Impairment losses [4]   (64)
At the end of the financial year 734 701
Property Plants and Equipments [Member] | Land and buildings [member] | Historical Cost [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year 1,745  
At the end of the financial year 1,830 1,745
Property Plants and Equipments [Member] | Land and buildings [member] | Accumulated depreciation, amortisation and impairment [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year (1,044)  
At the end of the financial year (1,096) (1,044)
Property Plants and Equipments [Member] | Oil and gas properties [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [6] 24,168  
At the end of the financial year [6] 25,787 24,168
Property Plants and Equipments [Member] | Oil and gas properties [member] | Gross carrying amount [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [6] 24,168 23,377
Additions [6] (293) [2] 836
Disposals at written down value [6] (4) [3] (2)
Depreciation and amortisation [6] (4,419) (3,844)
Impairment losses [4],[6]   (1,048)
Completions and transfers [6] 6,335 [5] 4,855
Transfer to assets held for sale [6]   (6)
At the end of the financial year [6] 25,787 24,168
Property Plants and Equipments [Member] | Oil and gas properties [member] | Historical Cost [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [6] 51,755  
At the end of the financial year [6] 58,303 51,755
Property Plants and Equipments [Member] | Oil and gas properties [member] | Accumulated depreciation, amortisation and impairment [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [6] (27,587)  
At the end of the financial year [6] (32,516) (27,587)
Property Plants and Equipments [Member] | Projects in development [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [7] 15,724  
At the end of the financial year [7] 15,926 15,724
Property Plants and Equipments [Member] | Projects in development [member] | Gross carrying amount [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [7] 15,724 15,541
Acquisitions through business combinations [1],[7] 2,211  
Additions [7] 5,514 [2] 5,759
Disposals at written down value [3],[7] (1,178)  
Impairment losses [4],[7]   (328)
Completions and transfers [7] (6,345) [5] (4,633)
Transfer to assets held for sale [7]   (615)
At the end of the financial year [7] 15,926 15,724
Property Plants and Equipments [Member] | Projects in development [member] | Historical Cost [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [7] 16,443  
At the end of the financial year [7] 16,300 16,443
Property Plants and Equipments [Member] | Projects in development [member] | Accumulated depreciation, amortisation and impairment [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [7] (719)  
At the end of the financial year [7] (374) (719)
Property Plants and Equipments [Member] | Other plant and equipment [Member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [6] 198  
At the end of the financial year [6] 189 198
Property Plants and Equipments [Member] | Other plant and equipment [Member] | Gross carrying amount [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [6] 198 161
Depreciation and amortisation [6] (48) (45)
Completions and transfers [6] 39 [5] 82
At the end of the financial year [6] 189 198
Property Plants and Equipments [Member] | Other plant and equipment [Member] | Historical Cost [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [6] 496  
At the end of the financial year [6] 533 496
Property Plants and Equipments [Member] | Other plant and equipment [Member] | Accumulated depreciation, amortisation and impairment [member]    
Disclosure of detailed information about oil and gas properties [line items]    
At the beginning of the financial year [6] (298)  
At the end of the financial year [6] $ (344) $ (298)
[1] Refer to Note B.5 for details on business combination and Note B.7 for details on asset acquisitions. Projects in development include the fair value ascribed to future phases of certain projects acquired through business combinations.
[2] Includes $5,003 million of capital additions and $410 million of capitalised borrowing costs offset by $192 million following changes in restoration provision.
[3] Refer to Note B.8 for details on disposal of assets.
[4] Refer to Note B.4 for details on impairment.
[5] Upon first oil in June 2024, the carrying value of the Sangomar project has been transferred from projects in development to oil and gas properties.
[6] Transferred exploration and evaluation and plant and equipment, which were categories in 2023, have been reviewed and presented in new categories in 2024. Transferred exploration and evaluation and operational plant and equipment have been combined and presented as ‘oil and gas properties’. All remaining plant and equipment have been presented as ‘other plant and equipment’. The 2023 amounts have been reclassified to be presented on the same basis.
[7] $1,407 million of the carrying amount as at 31 December 2024 in projects in development relates to new energy assets.