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Environmental Matters (Tables)
 6 Months Ended
Jun. 30, 2023
Text Block [Abstract]  
Environmental Obligations Recognized by Company

The following table sets forth a summary of changes in the Company’s liability for Environmental Obligations for the six months ended June 30, 2023 and 2022.

 

Environmental Obligations (millions)

 

 

June 30,

 

 

2023

 

 

2022

 

Total Balance at Beginning of Period

 

$

4.4

 

 

$

2.7

 

Additions

 

 

0.5

 

 

 

0.3

 

Less: Payments / Reductions

 

 

0.2

 

 

 

0.2

 

Total Balance at End of Period

 

 

4.7

 

 

 

2.8

 

Less: Current Portion

 

 

0.6

 

 

 

0.6

 

Noncurrent Balance at End of Period

 

$

4.1

 

 

$

2.2