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Fair Value of Assets and Liabilities
3 Months Ended
Mar. 31, 2025
Fair Value Disclosures [Abstract]  
Fair Value of Assets and Liabilities Fair Value of Assets and Liabilities. Assets and liabilities subject to fair value measurement by fair value level are recorded as follows:
 March 31, 2025December 31, 2024
 Classification on Condensed Consolidated Statement of Financial Position Fair Value Measurements Using Fair Value Measurements Using
 Fair ValueLevel 1Level 2Fair ValueLevel 1Level 2
Assets
Marketable securitiesShort-term investments$8.1 $8.1 $— $16.9 $16.9 $— 
Assets held in rabbi trustsSecurities and other investments2.9 2.9 — 3.1 3.1 — 
Total$11.0 $11.0 $— $20.0 $20.0 $— 
Liabilities
Deferred compensationOther liabilities2.9 — 2.9 3.1 — 3.1 
Total$2.9 $— $2.9 $3.1 $— $3.1 

The Company uses the end of period when determining the timing of transfers between levels. During the three months ended March 31, 2025 and 2024, there were no transfers between levels. Debt had a carrying value of $966.0 and fair value of $996.9 at March 31, 2025, and a carrying value of $966.0 and fair value of $987.4 at December 31, 2024. Refer to Note 8 for further details surrounding the Company's debt as of March 31, 2025 compared to December 31, 2024.