v3.25.2
Taxation - Summary of Deferred Tax (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax asset, Beginning balance $ 23,589 $ 29,362
(Charge)/credit to income (2,060) (4,818)
Currency translation differences 190 (941)
Other comprehensive income 122 (530)
Other movements (2,218) 516
Deferred tax asset, Ending balance 19,623 23,589
Deferred tax liability, Beginning Balance (31,960) (29,483)
Credit/(charge) to income 1,713 (1,687)
Currency translation differences 54 837
Other comprehensive income (96) (848)
Other movements 1,773 (779)
Deferred tax liability, Ending Balance (28,516) (31,960)
Deferred tax liability (asset) (8,893) (8,371)
Deferred tax asset 6,454 7,815
Deferred tax liability (15,347) (16,186)
Decommissioning and other provisions    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax asset, Beginning balance 6,049 6,562
(Charge)/credit to income 61 (217)
Currency translation differences 89 (303)
Other comprehensive income 0 0
Other movements 1,378 7
Deferred tax asset, Ending balance 7,577 6,049
Property, plant and equipment    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax asset, Beginning balance 4,290 4,993
(Charge)/credit to income (680) (1,261)
Currency translation differences 18 (63)
Other comprehensive income 0 0
Other movements (2,044) 621
Deferred tax asset, Ending balance 1,584 4,290
Deferred tax liability, Beginning Balance (24,818) (23,144)
Credit/(charge) to income 2,109 (1,503)
Currency translation differences (173) 380
Other comprehensive income (3) 4
Other movements 889 (555)
Deferred tax liability, Ending Balance (21,996) (24,818)
Tax losses and credits carried forward    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax asset, Beginning balance 6,446 10,518
(Charge)/credit to income (2,025) (3,434)
Currency translation differences 66 (426)
Other comprehensive income (5) 18
Other movements (202) (230)
Deferred tax asset, Ending balance 4,280 6,446
Retirement benefits    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax asset, Beginning balance 1,977 2,744
(Charge)/credit to income 27 (66)
Currency translation differences 28 (40)
Other comprehensive income 104 (618)
Other movements (386) (43)
Deferred tax asset, Ending balance 1,750 1,977
Deferred tax liability, Beginning Balance (3,189) (2,736)
Credit/(charge) to income (228) 93
Currency translation differences 227 287
Other comprehensive income (90) (870)
Other movements 400 37
Deferred tax liability, Ending Balance (2,880) (3,189)
Other    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax asset, Beginning balance 4,827 4,545
(Charge)/credit to income 557 160
Currency translation differences (11) (109)
Other comprehensive income 23 70
Other movements (964) 161
Deferred tax asset, Ending balance 4,432 4,827
Deferred tax liability, Beginning Balance (3,953) (3,603)
Credit/(charge) to income (168) (277)
Currency translation differences 0 170
Other comprehensive income (3) 18
Other movements 484 (261)
Deferred tax liability, Ending Balance $ (3,640) $ (3,953)