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Risks Arising from Financial Instruments - Summary for Each Type of Derivative Fair Value Recognized as Assets and Liabilities (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Disclosure of detailed information about financial instruments [line items]    
Assets $ 669 $ 965
Liabilities (5,886) (6,804)
Net (5,216) (5,839)
Non-current, Assets 48 138
Non-current, Liabilities (100) (1,759)
Non-current, Net (52) (1,621)
Derivatives 621 827
Derivatives (5,786) (5,046)
Current derivative financial assets liabilities, net, Total (5,164) (4,218)
Forward exchange contracts [member]    
Disclosure of detailed information about financial instruments [line items]    
Assets 238 480
Liabilities (129) (691)
Net 109 (211)
Foreign currency futures [member]    
Disclosure of detailed information about financial instruments [line items]    
Assets 0 36
Liabilities (37) (5)
Net (37) 31
Interest rate swap [member]    
Disclosure of detailed information about financial instruments [line items]    
Assets 38 80
Liabilities   0
Net 38 80
Cross currency interest rate swap [member]    
Disclosure of detailed information about financial instruments [line items]    
Assets 111 107
Liabilities (273) (709)
Net (162) (602)
Aluminum swaps [member]    
Disclosure of detailed information about financial instruments [line items]    
Assets 178 170
Liabilities (20) (10)
Net 158 160
Sugar futures commodity contract [member]    
Disclosure of detailed information about financial instruments [line items]    
Assets 13 10
Liabilities   0
Net 13 10
Other commodity contracts [member]    
Disclosure of detailed information about financial instruments [line items]    
Assets 62 46
Liabilities (13) (8)
Net 50 37
Equity derivatives [member]    
Disclosure of detailed information about financial instruments [line items]    
Assets 0 27
Liabilities (5,412) (5,373)
Net (5,412) (5,346)
Energy futures commodity contract [member]    
Disclosure of detailed information about financial instruments [line items]    
Assets 29 9
Liabilities (2) (7)
Net $ 27 $ 2