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Trade Accounts Payable, Other Current Liabilities and Non-Current Liabilities - Changes in Consolidated Other Current and Non-current Liabilities (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of other provisions [line items]    
Balance at beginning of period $ 1,656 $ 1,341
Additions or increase in estimates 395 532
Releases or decrease in estimates (318) (314)
Accretion expense 53 42
Foreign currency translation (6) 55
Balance at end of period 1,780 1,656
Current provisions 399 492
Other non-current liabilities 1,381 1,164
Asset retirement obligations [Member]    
Disclosure of other provisions [line items]    
Balance at beginning of period 573  
Additions or increase in estimates 63  
Releases or decrease in estimates (12)  
Accretion expense 38  
Foreign currency translation 26  
Balance at end of period 688 573
Current provisions 125  
Other non-current liabilities 563  
Environmental liabilities [Member]    
Disclosure of other provisions [line items]    
Balance at beginning of period 279  
Additions or increase in estimates 6  
Releases or decrease in estimates (52)  
Accretion expense 0  
Foreign currency translation (5)  
Balance at end of period 228 279
Current provisions 25  
Other non-current liabilities 203  
Legal proceedings provision [Member]    
Disclosure of other provisions [line items]    
Balance at beginning of period 105  
Additions or increase in estimates 45  
Releases or decrease in estimates (41)  
Accretion expense 0  
Foreign currency translation (8)  
Balance at end of period 101 105
Current provisions 6  
Other non-current liabilities 95  
Valuation derivative instruments [Member]    
Disclosure of other provisions [line items]    
Balance at beginning of period 95  
Additions or increase in estimates 123  
Releases or decrease in estimates (118)  
Accretion expense 0  
Foreign currency translation 0  
Balance at end of period 100 95
Current provisions 0  
Other non-current liabilities 100  
Other liabilities and provisions [Member]    
Disclosure of other provisions [line items]    
Balance at beginning of period 604  
Additions or increase in estimates 158  
Releases or decrease in estimates (95)  
Accretion expense 15  
Foreign currency translation (19)  
Balance at end of period 663 $ 604
Current provisions 243  
Other non-current liabilities $ 420