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Debt Obligations (Tables)
 9 Months Ended
Sep. 30, 2025
Debt Disclosure [Abstract]  
Schedule of Debt and Finance Lease Obligations
Debt obligations, including finance lease obligations, consisted of the following (in millions):

Maturity Date
September 30,
2025		December 31, 2024
Infrastructure
SOFR plus 2.75% Line of Credit
May 20, 2030$20.0 $— 
SOFR plus 2.75% Term Loan
May 20, 203083.9 — 
PRIME minus 0.75% Line of Credit
— 45.0 
3.25% Term Loan
— 74.6 
PRIME minus 0.75% Term Loan
— 24.5 
Obligations under finance leasesVarious0.2 0.6 
Total Infrastructure$104.1 $144.7 
Spectrum
8.50% Note
September 30, 2026$19.3 $19.3 
11.45% Notes
September 30, 202650.4 50.4 
Total Spectrum$69.7 $69.7 
Life Sciences
Lancer Promissory Note
August 1, 2026$46.5 $24.0 
Total Life Sciences$46.5 $24.0 
Non-Operating Corporate
10.50% Senior Secured Notes (1)
February 1, 2027$360.4 $— 
9.50% Convertible Senior Notes (1)
March 1, 202753.5 — 
CGIC Promissory Note (1)
April 30, 202744.1 31.0 
SOFR plus 5.75% Line of Credit
September 15, 202620.0 20.0 
   8.50% Senior Secured Notes
February 1, 20261.9 330.0 
7.50% Convertible Senior Notes
August 1, 20260.2 48.9 
Total Non-Operating Corporate$480.1 $429.9 
Total outstanding principal$700.4 $668.3 
Unamortized issuance discount, issuance premium, and deferred financing costs(31.3)(5.5)
Less: current portion of debt obligations (1)
(571.8)(162.2)
Debt obligations, net of current portion
$97.3 $500.6 
(1) Certain debt instruments with long-term maturity dates have been classified as current obligations as of September 30, 2025, due to contingent mandatory prepayment provisions contained in the agreements that could require repayment within one year of the balance sheet date if certain asset sales occur, resulting in uncertainty regarding the timing of repayment.
Schedule of Maturities of Debt and Finance Lease Obligations
As of September 30, 2025, estimated future aggregate finance lease and principal debt payments based on contractual maturities, excluding interest, were as follows (in millions):

Finance LeasesDebtTotal
2025 (remaining period)
$0.1 $1.4 $1.5 
20260.1 143.9 144.0 
2027— 464.3 464.3 
2028— 5.8 5.8 
2029— 6.4 6.4 
Thereafter— 78.4 78.4 
Total aggregate finance lease and debt principal payments
$0.2 $700.2 $700.4