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Commitments and Contingencies (Tables)
 3 Months Ended
Mar. 31, 2018
Commitments And Contingencies Disclosure [Abstract]  
Change in Accrued Environmental Remediation and Related Costs

The table below presents a summary of the activity in our accrued environmental costs during the first three months of 2018 are presented below.

 

 

Amount

 

 

(In millions)

 

Balance at the beginning of the year

$

117.5

  

Additions charged to expense, net

 

4.3

  

Payments, net

 

(.5

)

Balance at the end of period

$

121.3

  

Amounts recognized in our Condensed Consolidated Balance Sheet at the

   end of the period:

 

 

 

Current liabilities

$

19.7

  

Noncurrent liabilities

 

101.6

  

Total

$

121.3