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Income Taxes (Tables)
6 Months Ended
Jun. 30, 2019
Income Tax Disclosure [Abstract]  
Schedule of income tax provision and the respective effective income tax rates

Our income tax provision for the periods presented and the respective effective income tax rates for such periods are as follows (in millions, except for income tax rates): 
 
 
For the Three Months Ended
For the Six Months Ended
 
 
June 30,
June 30,
 
 
2019
 
2018
2019
 
2018
Income tax provision
 
$
20.0

 
$
12.4

$
34.0

 
$
19.7

 
 
 
 
 
 
 
 
Effective income tax rate
 
34.7
%
 
29.7
%
31.2
%
 
24.6
%