XML 35 R23.htm IDEA: XBRL DOCUMENT v3.23.1
Environmental Matters (Tables)
 3 Months Ended
Mar. 31, 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 three months ended March 31, 2023 and 2022.

 

Environmental Obligations (millions)

 

 

March 31,

 

 

2023

 

 

2022

 

Total Balance at Beginning of Period

 

$

4.4

 

 

$

2.7

 

Additions

 

 

0.5

 

 

 

—

 

Less: Payments / Reductions

 

 

(0.2

)

 

 

—

 

Total Balance at End of Period

 

 

4.7

 

 

 

2.7

 

Less: Current Portion

 

 

0.6

 

 

 

0.5

 

Noncurrent Balance at End of Period

 

$

4.1

 

 

$

2.2