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Debt Obligations (Tables)
9 Months Ended
Sep. 30, 2022
Debt Disclosure [Abstract]  
Schedule of Debt and Finance Lease Obligations
Debt obligations consist of the following (in millions):
September 30,
2022
December 31,
2021
Infrastructure
3.25% Note due 2026
$101.0 $107.2 
PRIME minus 0.85% Line of Credit due 2024
107.7 30.4 
4.00% Note due 2024
17.5 25.0 
8.00% Note due 2024
19.1 19.6 
11.00% Note due 2024
— 6.3 
Obligations under finance leases2.2 0.1 
Spectrum
8.50% Note due 2022
19.3 19.3 
10.50% Note due 2022
32.9 32.9 
Life Sciences
12.00% Note due 2022
10.0 — 
Non-Operating Corporate
   8.50% Senior Secured Notes, due 2026
330.0 330.0 
7.50% Convertible Senior Notes, due 2026
51.8 51.8 
7.50% Convertible Senior Notes, due 2022
— 3.2 
LIBOR plus 5.75% Line of Credit due 2024
20.0 5.0 
711.5 630.8 
Unamortized issuance discount, issuance premium, and deferred financing costs(2.2)(4.5)
Less: current portion of debt obligations(81.4)(69.5)
Debt obligations$627.9 $556.8 
Schedule of Maturities of Debt and Finance Lease Obligations
Aggregate finance lease and debt payments, including interest, are as follows (in millions):

Finance LeasesDebtTotal
2022$0.1 $79.2 $79.3 
20231.8 62.3 64.1 
20240.3 194.2 194.5 
20250.1 41.2 41.3 
2026— 469.8 469.8 
Thereafter— — — 
Total minimum principal and interest payments2.3 846.7 849.0 
Less: Amount representing interest(0.1)(137.4)(137.5)
Total aggregate finance lease and debt payments $2.2 $709.3 $711.5