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Income Taxes (Components of Income (Loss) before Income Tax) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Operating Loss Carryforwards [Line Items]      
United States $ 165 $ (208) $ 2
Foreign (31) 183 266
Income (loss) before income taxes and noncontrolling interests 134 (25) 268
United Kingdom      
Operating Loss Carryforwards [Line Items]      
Foreign 56 76 105
Australia      
Operating Loss Carryforwards [Line Items]      
Foreign (199) 37 15
Canada      
Operating Loss Carryforwards [Line Items]      
Foreign (2) (2) 3
Middle East      
Operating Loss Carryforwards [Line Items]      
Foreign 39 69 87
Africa      
Operating Loss Carryforwards [Line Items]      
Foreign 3 4 5
Other      
Operating Loss Carryforwards [Line Items]      
Foreign $ 72 $ (1) $ 51