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Financial Instruments - Summary of Consolidated Debt by Type of Instrument (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of detailed information about financial instruments [line items]    
Current maturities $ (68) $ (105)
Short- term 68 105
Short-term debt 73 179
Long- term 7,306 9,160
Bank loans [member]    
Disclosure of detailed information about financial instruments [line items]    
Short- term   67
Long- term 2,017 2,754
Bank loans [member] | Loans in Foreign Countries [member]    
Disclosure of detailed information about financial instruments [line items]    
Short- term   67
Long- term 289 371
Bank loans [member] | Syndicated loans [member]    
Disclosure of detailed information about financial instruments [line items]    
Long- term 1,728 2,383
Notes payable [member]    
Disclosure of detailed information about financial instruments [line items]    
Short- term 5 7
Long- term 5,357 6,511
Notes payable [member] | Medium term notes [member]    
Disclosure of detailed information about financial instruments [line items]    
Long- term 5,179 6,327
Notes payable [member] | Other Notes Payable [member]    
Disclosure of detailed information about financial instruments [line items]    
Short- term 5 7
Long- term 178 184
Total bank loans and notes payables [member]    
Disclosure of detailed information about financial instruments [line items]    
Short- term 5 74
Long- term $ 7,374 $ 9,265
Bottom of range [member] | Bank loans [member] | Loans in Foreign Countries [member]    
Disclosure of detailed information about financial instruments [line items]    
Debt instrument maturity period 2023 2021
Bottom of range [member] | Bank loans [member] | Syndicated loans [member]    
Disclosure of detailed information about financial instruments [line items]    
Debt instrument maturity period 2023 2021
Bottom of range [member] | Notes payable [member] | Medium term notes [member]    
Disclosure of detailed information about financial instruments [line items]    
Debt instrument maturity period 2024 2024
Bottom of range [member] | Notes payable [member] | Other Notes Payable [member]    
Disclosure of detailed information about financial instruments [line items]    
Debt instrument maturity period 2022 2021
Top of range [member] | Bank loans [member] | Loans in Foreign Countries [member]    
Disclosure of detailed information about financial instruments [line items]    
Debt instrument maturity period 2024 2024
Top of range [member] | Bank loans [member] | Syndicated loans [member]    
Disclosure of detailed information about financial instruments [line items]    
Debt instrument maturity period 2026 2025
Top of range [member] | Notes payable [member] | Medium term notes [member]    
Disclosure of detailed information about financial instruments [line items]    
Debt instrument maturity period 2031 2030
Top of range [member] | Notes payable [member] | Other Notes Payable [member]    
Disclosure of detailed information about financial instruments [line items]    
Debt instrument maturity period 2027 2027