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Fair Value Measurements and Investments
 3 Months Ended
Mar. 31, 2025
Fair Value Disclosures [Abstract]  
Fair Value Measurements and Investments Fair Value Measurements and Investments
Financial Assets and Liabilities

The methods and assumptions used in estimating the fair value amounts included in the disclosures for financial assets and liabilities are consistent with those disclosed in the Company's 2024 Annual Report on Form 10-K.

The carrying amounts and estimated fair values of the Company's financial assets and liabilities which were not recorded at fair value on the Condensed Consolidated Balance Sheets as of March 31, 2025, and December 31, 2024, were as follows (in millions):

As of March 31, 2025 Estimated Fair Value
Financial AssetsCarrying AmountLevel 1Level 2Level 3Total
Cash and cash equivalents$235.2 $235.2 $— $— $235.2 
Financial Liabilities     
Long-term debt
$3,237.2 
(1)
$— $3,160.9 $— $3,160.9 

(1)The carrying amount of long-term debt excluded a $2.5 million long-term finance lease obligation and $4.6 million of unamortized debt issuance costs.

As of December 31, 2024Estimated Fair Value
Financial AssetsCarrying AmountLevel 1Level 2Level 3Total
Cash and cash equivalents$117.9 $117.9 $— $— $117.9 
Financial Liabilities 
Long-term debt$3,236.5 
(1)
$— $3,129.7 $— $3,129.7 

(1)The carrying amount of long-term debt excluded a $2.7 million long-term finance lease obligation and $4.8 million of unamortized debt issuance costs.