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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Effective Tax Rate        
Income from continuing operations before income taxes $ 414 $ 188 $ 558 $ 286
Income tax expense/(benefit) from continuing operations $ 101 $ (1) $ 124 $ 3
Effective income tax rate 24.40% (0.50%) 22.20% 1.00%
Uncertain Tax Benefits        
Non-current tax liability for uncertain tax benefits $ 18   $ 18  
Uncertain tax benefits, penalties and interest accrued $ 2   $ 2