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Non-operating Income, Net
 9 Months Ended
Sep. 30, 2025
Other Income and Expenses [Abstract]  
Other Nonoperating Income and Expense Non-operating Income, Net
The following table presents the components of non-operating income, net:
Three Months Ended September 30,Nine Months Ended September 30,
2025202420252024
(In millions)
Interest income
$6.7 $8.7 $20.6 $30.4 
Other, net
(0.4)1.8 (1.3)5.5 
Total non-operating income, net
$6.3 $10.5 $19.3 $35.9 
Interest income is earned primarily from the Company’s surplus cash balances and marketable securities. The decrease in interest income during the three and nine months ended September 30, 2025, compared to the same periods last year, primarily reflects the lower amounts invested in debt securities in the current period and slightly lower interest rates on the Company’s investments in debt securities. Other, net, reflects net gains and losses from the Company’s foreign currency exposure and related hedges.