v3.26.1
Regulatory Requirements - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Public Utilities, General Disclosures [Line Items]        
Home Equity Conversion Mortgage-Backed Securities Related Borrowings At Fair Value $ (9,437.4) $ (9,611.7) $ (10,587.6) $ (10,872.1)
Restrictive liquidity requirements 86.2      
Cash and cash equivalents 182.5 180.5    
Assets serviced 200,100.0 191,100.0    
Owned MSRs        
Public Utilities, General Disclosures [Line Items]        
Assets serviced $ 162,900.0 $ 152,500.0