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Variable Interest Entities (Narrative) (Details) - USD ($)
Mar. 31, 2026
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Contractual obligation to provide financial support $ 0  
Seed capital investments 64,500,000 $ 122,900,000
Unfunded commitments $ 72,600,000 $ 19,600,000