v3.26.1
Unconsolidated Affiliates - Schedule of Equity in Earnings of Unconsolidated Affiliates (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Schedule of Investments [Line Items]        
Equity in earnings of unconsolidated affiliates, net $ 3.0 $ 1.6 $ 6.9 $ 3.9
Orbit Private Investments L.P.        
Schedule of Investments [Line Items]        
Equity in earnings of unconsolidated affiliates, net 0.1 (0.3) 4.5 0.1
International Financial Data Services L.P.        
Schedule of Investments [Line Items]        
Equity in earnings of unconsolidated affiliates, net 1.2 2.2 1.1 4.4
Pershing Road Development Company, LLC        
Schedule of Investments [Line Items]        
Equity in earnings of unconsolidated affiliates, net 0.0 (0.3) 0.2 (0.2)
Broadway Square Partners, LLP        
Schedule of Investments [Line Items]        
Equity in earnings of unconsolidated affiliates, net (0.4) 0.0 (0.9) (0.4)
Other Unconsolidated Affiliates        
Schedule of Investments [Line Items]        
Equity in earnings of unconsolidated affiliates, net $ 2.1 $ (0.0) $ 2.0 $ 0.0