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Divestitures - Turkey Subsidiary Divestment (Details)
€ in Millions, $ in Millions
3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Jun. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
May 17, 2021
EUR (€)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
(Gain) loss on sale and disposal of businesses $ (15) $ 120 $ 7   $ 105 $ 7  
Disposed of by Sale | Turkey Subsidiary              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Disposal group, consideration   93   $ 93     € 78
(Gain) loss on sale and disposal of businesses $ (13) (164)          
Loss (gain) on write-down of assets   40   $ 40      
Gain (loss) of cumulative foreign currency translation adjustments   $ (124)