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Income Taxes
6 Months Ended
Jun. 30, 2020
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
 
Quarter ended
 
Year to date
 
2020
 
2019
 
2020
 
2019
Income tax provision
$
51


$
88

 
$
63


$
125

Effective tax rate
19.8
%
 
23.3
%
 
17.8
%
 
18.5
%


Our second quarter and year to date effective tax rates are lower than prior year primarily due to the favorable impact of excess benefits on share-based compensation. These favorable impacts were partially offset by higher year-over-year reserves, including the establishment of current year reserves related to various U.S. state tax filing positions and tax related to a prior year divestiture.