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Other noncurrent liabilities
3 Months Ended
Mar. 31, 2025
Other noncurrent liabilities  
Other noncurrent liabilities

Note 9 – Other noncurrent liabilities:

    

December 31, 

    

March 31, 

2024

2025

(In millions)

Accrued development costs

$

26.8

$

24.9

Operating lease liabilities

17.1

17.0

Insurance claims and expenses

 

16.6

 

16.6

Asset retirement obligations

14.3

15.1

Other postretirement benefits

 

6.7

 

6.7

Deferred income

11.8

4.7

Employee benefits

 

4.5

 

4.7

Earn-out liability

4.3

4.4

Other

 

.6

 

.6

Total

$

102.7

$

94.7

See Notes 17 and 18 for additional details related to the acquisition earn-out liability.