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Debt and Credit Arrangements (Tables)
 12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Schedule of Outstanding Borrowings and Costs
The following table represents the components of our borrowings:
 December 31,
2024		December 31,
2023
Senior secured and senior unsecured notes:
Principal amount, senior secured notes due 2030$1,460.0 $1,460.0 
Principal amount, senior unsecured notes due 2031510.0 510.0 
Unamortized discount(23.5)(26.9)
Unamortized debt issuance costs(28.8)(32.9)
Senior secured and senior unsecured notes, net of unamortized discount and debt issuance costs1,917.7 1,910.2 
Senior secured revolving credit facilities and term loans:
Term loans due March 20301,581.0 1,631.0 
Senior secured revolving credit facility due April 2029
205.0 102.8 
Unamortized discount(31.3)(35.8)
Unamortized debt issuance costs(32.3)(32.5)
Senior secured revolving credit facility and term loan, net of unamortized discount and debt issuance costs1,722.4 1,665.5 
Convertible notes due November 2024:
Principal amount — 258.7 
Unamortized debt issuance costs— (0.9)
Convertible notes due November 2024, net of unamortized debt issuance costs— 257.8 
Other debt facilities
1.5 1.4 
Total debt, net of unamortized debt issuance costs3,641.6 3,834.9 
Less: Current maturities (1)
0.9 258.5 
Long-term debt$3,640.7 $3,576.4 
_______________
(1)Our convertible notes due November 2024, which were settled as of December 31, 2024, net of unamortized debt issuance costs, are included in current maturities for the year ended December 31, 2023.
The following table summarizes the carrying values and fair values of our actively quoted debt instruments (1):
December 31, 2024December 31, 2023
Carrying ValueFair ValueCarrying ValueFair Value
Term loans due March 2030$1,517.4 $1,589.9 $1,562.7 $1,631.0 
Senior secured notes due 20301,425.6 1,517.9 1,420.2 1,533.0 
Senior unsecured notes due 2031492.2 546.9 490.0 555.9 
Convertible notes due November 2024— — 257.8 604.5 
_______________
(1)The debt instruments noted above are actively quoted instruments and, accordingly, their fair values were determined using Level 1 inputs.
Scheduled Annual Maturities
The following table represents the scheduled maturities for our borrowings, excluding unamortized debt issuance costs, for the next five years:
For the Year Ended December 31,
2025$0.9 
2026— 
2027— 
2028— 
2029205.0 
Thereafter3,551.6 
Total$3,757.5 
Schedule of Interest Expense
The following table summarizes interest expense (1):
Year Ended December 31,
202420232022
Interest expense term loans due March 2030$133.0 $119.5 $— 
Interest expense senior secured notes due 2030108.9 109.7 3.0 
Interest expense senior unsecured notes due 203148.2 48.6 1.3 
Interest expense senior secured revolving credit facility due April 202930.3 27.7 23.4 
Interest expense convertible notes due November 20242.5 2.4 4.0 
Financing costs amortization19.1 17.2 2.9 
Capitalized interest(6.3)(4.6)(0.9)
Total interest expense$335.7 $320.5 $33.7 
_______________
(1)Interest expense noted above relates to the debt and credit arrangements identified in this note and includes interest recognized on obligations with contractual interest rates, capitalized interest, financing costs amortization and interest accretion of debt discount.