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Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Income Taxes [Line Items]        
Unrecognized benefit that would affect the effective tax rate $ 1   $ 1  
Amount of interest and penalties included in liabilities for uncertain tax positions $ 1   $ 1  
Effective income tax rate 13.50% 102.80% (669.70%) 22.50%
Income tax refunds (payments), net $ (3) $ (1) $ (2) $ 3
Federal | Tax Year 2014        
Income Taxes [Line Items]        
Open tax year     2014  
Federal | Tax Year 2015        
Income Taxes [Line Items]        
Open tax year     2015