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Financial Instruments and Risk Management (Credit Risk - Aging of Trade Receivables) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Gross [Member]    
Disclosure of financial instruments [Line Items]    
Trade receivables $ 1,593 $ 1,427
Gross [Member] | Not past due [Member]    
Disclosure of financial instruments [Line Items]    
Trade receivables 1,485 1,313
Gross [Member] | Past due up to 3 months [Member]    
Disclosure of financial instruments [Line Items]    
Trade receivables 97 82
Gross [Member] | Past due 3 to 12 months [Member]    
Disclosure of financial instruments [Line Items]    
Trade receivables 10 23
Gross [Member] | Past due over 12 months [Member]    
Disclosure of financial instruments [Line Items]    
Trade receivables 1 9
Accumulated impairment [member]    
Disclosure of financial instruments [Line Items]    
Trade receivables (8) (9)
Accumulated impairment [member] | Not past due [Member]    
Disclosure of financial instruments [Line Items]    
Trade receivables (3) (1)
Accumulated impairment [member] | Past due up to 3 months [Member]    
Disclosure of financial instruments [Line Items]    
Trade receivables 0 0
Accumulated impairment [member] | Past due 3 to 12 months [Member]    
Disclosure of financial instruments [Line Items]    
Trade receivables (4) (2)
Accumulated impairment [member] | Past due over 12 months [Member]    
Disclosure of financial instruments [Line Items]    
Trade receivables $ (1) $ (6)