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Details of Income Statement Items (Other Income and Expenses) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Other income and expenses [Abstract]      
Capital gain $ 16 $ 0 $ 12
Profit From divestment 14 0 0
Past service cost 12 11 5
Reversal of provision for legal claims 11 0 7
Reversal of Impairment of fixed assets 9 0 10
Other 1 9 6
Other income recorded in the income statements 63 20 40
Provision for legal claims 17 0 14
Provision for historical waste removal and site closure costs 14 83 7
Transaction costs 8 0 0
Impairment and disposal of assets 9 90 0
Provision for early retirement and dismissal of employees 0 78 5
Other 9 5 4
Other expenses recorded in the income statements $ 57 $ 256 $ 30