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Financial Instruments and Risk Management (Credit Risk - Maximum Exposure to Credit Risk) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Maximum Exposure to credit risk Financial assets [Line Items]    
Carrying amount $ 2,210 $ 2,186
Cash and cash equivalents [Member]    
Maximum Exposure to credit risk Financial assets [Line Items]    
Carrying amount 417 473
Short term investments and deposits [Member]    
Maximum Exposure to credit risk Financial assets [Line Items]    
Carrying amount 91 91
Trade receivables [Member]    
Maximum Exposure to credit risk Financial assets [Line Items]    
Carrying amount 1,583 1,418
Other receivables [Member]    
Maximum Exposure to credit risk Financial assets [Line Items]    
Carrying amount 55 45
Derivatives [Member]    
Maximum Exposure to credit risk Financial assets [Line Items]    
Carrying amount 29 145
Other non-current assets [Member]    
Maximum Exposure to credit risk Financial assets [Line Items]    
Carrying amount $ 35 $ 14