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Income Taxes
3 Months Ended
Mar. 31, 2020
Income Tax Disclosure [Abstract]  
Income Taxes
11.
Income Taxes
At March 31, 2020, the Company had gross un
certain
tax benefits of $114.6 million, of which $69.7 million, if recognized, would impact the effective tax rate.
The following is a reconciliation of the liability for uncertain tax positions (in millions):
Balance at December 31, 2019
  $
109.1
 
Additions for tax positions
 
 
6.1
 
Reductions for tax positions
   
(0.6
)
 
         
Balance at March 31, 2020
 
$
114.6
 
         
The Company recognizes interest and penalties accrued related to uncertain tax positions in income tax expense. The amounts recognized in income tax expense for interest and penalties during the three months ended March 31, 2020 and 2019 were not significant.
The effective tax rate for the three months ended March 31, 2020 was 20.1%, compared with 20.5% for the three months ended March 31, 2019. The lower rate for 2020
reflects the results of tax planning initiatives and lower
mix-related
foreign tax expense partially offset by lower year over year tax benefits related to share-based payment transactions.