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Other Income, Net (Tables)
 3 Months Ended
Mar. 31, 2024
Other Income and Expenses [Abstract]  
Other Income, Net

The following table presents the components of Other income, net (in millions of dollars):

 

 

 

Quarter Ended March 31,

 

 

 

2024

 

 

2023

 

Interest income

 

$

0.9

 

 

$

0.4

 

Net periodic postretirement benefit cost

 

 

(0.3

)

 

 

(2.0

)

Unrealized gain on equity securities

 

 

0.2

 

 

 

0.1

 

(Loss) gain on disposition of property, plant and equipment

 

 

(0.2

)

 

 

15.0

 

Gain on business interruption insurance recoveries1

 

 

10.5

 

 

 

—

 

All other, net

 

 

(0.2

)

 

 

0.1

 

Other income, net

 

$

10.9

 

 

$

13.6

 

 

1.
Represents advances against business interruption insurance claims. We recognize such advances in the period in which the insurance proceeds are received or become realizable. As of March 31, 2024, we received net cash proceeds of $9.7 million on the $10.5 million total gain recognized to date.