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Non-operating income, net
 12 Months Ended
Dec. 31, 2023
Non-operating (loss) income, net [Abstract]  
Non-operating Income, Net Non-operating Income (Loss), Net
The following table presents the components of Non-operating income (loss), net:
Year Ended December 31,
202320222021
(In millions)
Interest income$46.1 $14.9 $0.6 
Loss on extinguishment of debt— — (2.1)
Other, net5.1 (2.5)0.2 
Total non-operating income (loss), net$51.2 $12.4 $(1.3)
Interest income is earned principally from the Company’s surplus cash balances and marketable securities. The increase in interest income in 2023 reflects higher interest rates on the Company’s investments in debt securities. The redemption of the 2023 senior notes in 2021 resulted in a loss on debt extinguishment of $2.1 million related to the unamortized debt issuance costs on the notes. Other non-operating income, net in 2023 reflects net gains and losses from the Company’s foreign currency exposure and related hedges.