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Fair Value of Financial Instruments - Schedule of Financial Instruments Measured on Not Measured at Fair Value (Details) - Nonrecurring - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
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 668.9 662.2
Total liabilities not accounted for at fair value 668.9 662.2
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 607.7 577.1
Total liabilities not accounted for at fair value 607.7 577.1
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 590.1 577.1
Total liabilities not accounted for at fair value 590.1 577.1
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 17.6 0.0
Total liabilities not accounted for at fair value $ 17.6 $ 0.0