v3.26.1
Fair Value of Financial Instruments - Schedule of Financial Instruments Measured on Not Measured at Fair Value (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Senior Notes | Spectrum    
Liabilities    
Exit fees (non-current portion) $ 25.8 $ 15.9
Carrying Value    
Assets    
Measurement alternative investment 0.9 0.9
Total assets not accounted for at fair value 0.9 0.9
Liabilities    
Debt obligations 661.6 662.2
Total liabilities not accounted for at fair value 661.6 662.2
Estimated Fair Value    
Assets    
Measurement alternative investment 0.9 0.9
Total assets not accounted for at fair value 0.9 0.9
Liabilities    
Debt obligations 642.1 577.1
Total liabilities not accounted for at fair value 642.1 577.1
Estimated Fair Value | Quoted Prices (Level 1)    
Assets    
Measurement alternative investment 0.0 0.0
Total assets not accounted for at fair value 0.0 0.0
Liabilities    
Debt obligations 0.0 0.0
Total liabilities not accounted for at fair value 0.0 0.0
Estimated Fair Value | Significant Other Observable Inputs (Level 2)    
Assets    
Measurement alternative investment 0.0 0.0
Total assets not accounted for at fair value 0.0 0.0
Liabilities    
Debt obligations 447.2 577.1
Total liabilities not accounted for at fair value 447.2 577.1
Estimated Fair Value | Significant Unobservable Inputs (Level 3)    
Assets    
Measurement alternative investment 0.9 0.9
Total assets not accounted for at fair value 0.9 0.9
Liabilities    
Debt obligations 194.9 0.0
Total liabilities not accounted for at fair value $ 194.9 $ 0.0