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Other Income (Expense), Net
3 Months Ended
Mar. 31, 2024
Other Income and Expenses [Abstract]  
Other Income (Expense), Net Other Income (Expense), Net 
Included in other income (expense), net for the first quarter 2024 and 2023 are the following:
 First Quarter
20242023
(In millions of dollars)
Interest income$2.8 $1.4 
Interest expense(0.5)(0.8)
Foreign exchange gains (losses)— (0.7)
Other(0.5)2.1 
Other income (expense), net$1.8 $2.0 
Included in Other for the first quarter of 2023 is a gain of $2.0 million for the receipt of earnout proceeds in connection with an investment that was sold in 2021.