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Income Taxes
6 Months Ended
Jun. 30, 2020
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
Our effective tax rates were as follows:
 
 
Second Quarter
 
First Six Months
(in millions)
 
2020
 
2019
 
2020
 
2019
Effective tax rate
 
26.6
%
 
24.5
%
 
25.7
%
 
25.6
%

For the second quarter of 2020, the provision for income taxes was higher than the second quarter of 2019 primarily due to the decrease in the valuation of the Company's deferred tax liabilities and decrease of income tax reserves in the second quarter of 2019.
For the first six months of 2020, the provision for income taxes was higher than the first six months of 2019 primarily due to the tax benefit received in the first six months of 2019 from the valuation allowance release on realizability of foreign net operating loss carryforwards, which was offset by the tax benefit received from the Company’s jurisdictional income mix through the first six months of 2020.