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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Effective Tax Rate        
Income from continuing operations before income taxes $ 341 $ 380 $ 899 $ 666
Income tax expense from continuing operations $ 92 $ 6 $ 216 $ 9
Effective income tax rate 27.00% 1.60% 24.00% 1.40%
Uncertain Tax Benefits        
Non-current tax liability for uncertain tax benefits $ 21   $ 21  
Uncertain tax benefits, penalties and interest accrued $ 3   $ 3