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Income and Other Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Domestic income $ 679 $ 331 $ 354
Foreign income 143 218 171
Income before Income Taxes and Equity Income $ 822 $ 549 $ 525