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Income Taxes Income Taxes (Tables)
6 Months Ended
Jun. 30, 2020
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit)
The table below shows our consolidated income tax expense (benefit) and our effective tax rates for the periods indicated (in millions):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2020
 
2019
 
2020
 
2019
Income tax expense (benefit)
$
(31
)
 
$
9

 
$
15

 
$
19

Effective tax rate
(23
)%
 
3
%
 
5
%
 
4
%