v3.25.2
Unconsolidated Affiliates - Schedule of Investments in Unconsolidated Affiliates (Detail) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Schedule of Investments [Line Items]    
Carrying Value $ 344.6 $ 328.4
Excess carrying value of investment over proportionate share of net assets $ 106.3 109.6
Orbit Private Investments Limited Partners    
Schedule of Investments [Line Items]    
Ownership Percentage [1] 9.80%  
Carrying Value $ 213.7 203.9
Excess carrying value of investment over proportionate share of net assets $ 0.0 0.0
International Financial Data Services L.P.    
Schedule of Investments [Line Items]    
Ownership Percentage [1] 50.00%  
Carrying Value $ 67.2 60.2
Excess carrying value of investment over proportionate share of net assets $ 26.3 28.0
Broadway Square Partners, LLP    
Schedule of Investments [Line Items]    
Ownership Percentage [1] 50.00%  
Carrying Value $ 51.8 52.2
Excess carrying value of investment over proportionate share of net assets $ 28.2 28.6
Pershing Road Development Company, LLC    
Schedule of Investments [Line Items]    
Ownership Percentage [1] 50.00%  
Carrying Value $ 9.9 10.1
Excess carrying value of investment over proportionate share of net assets 51.8 53.0
Other Unconsolidated Affiliates    
Schedule of Investments [Line Items]    
Carrying Value 2.0 2.0
Excess carrying value of investment over proportionate share of net assets $ 0.0 $ 0.0
[1] Ownership percentage is as of June 30, 2025 and December 31, 2024.