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Income Taxes (Tables)
9 Months Ended
Sep. 30, 2019
Income Taxes  
Schedule of provision for income taxes and effective tax rate

    

Three Months Ended September 30, 

    

Nine Months Ended September 30, 

2019

2018

2019

2018

Provision for income taxes

$

(91.8)

$

(100.0)

$

(250.0)

$

(280.8)

Effective tax rate

 

24.5

%  

 

23.8

%  

 

22.9

%  

 

24.3

%