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Financial Instruments - Summary of Exposure to Credit Risk and ECLs (Detail) - Trade receivables [member] - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure Details Of Exposure To Credit Risk And Expected Credit Loss [line items]    
Gross carrying amount $ 117 $ 124
Loss allowance $ (22) $ (40)
Current (not past due) [member]    
Disclosure Details Of Exposure To Credit Risk And Expected Credit Loss [line items]    
Weighted average loss rate 2.94% 7.48%
Gross carrying amount $ 70 $ 68
Loss allowance $ (2) $ (5)
Credit- impaired No No
1 – 30 days past due [member]    
Disclosure Details Of Exposure To Credit Risk And Expected Credit Loss [line items]    
Weighted average loss rate 10.08% 16.65%
Gross carrying amount $ 17 $ 17
Loss allowance $ (2) $ (3)
Credit- impaired No No
31 – 60 days past due [member]    
Disclosure Details Of Exposure To Credit Risk And Expected Credit Loss [line items]    
Weighted average loss rate 20.46% 45.85%
Gross carrying amount $ 10 $ 4
Loss allowance $ (2) $ (2)
Credit- impaired No No
61 – 90 days past due [member]    
Disclosure Details Of Exposure To Credit Risk And Expected Credit Loss [line items]    
Weighted average loss rate 50.14% 49.32%
Gross carrying amount $ 5 $ 4
Loss allowance $ (2) $ (2)
Credit- impaired No No
91 – 120 days past due [member]    
Disclosure Details Of Exposure To Credit Risk And Expected Credit Loss [line items]    
Weighted average loss rate 55.76% 76.74%
Gross carrying amount $ 4 $ 3
Loss allowance $ (3) $ (2)
Credit- impaired No No
More than 121 days [member]    
Disclosure Details Of Exposure To Credit Risk And Expected Credit Loss [line items]    
Weighted average loss rate 98.54% 94.57%
Gross carrying amount $ 11 $ 28
Loss allowance $ (11) $ (26)
Credit- impaired Yes Yes