v3.24.3
Variable Interest Entities (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Variable Interest Entity [Line Items]    
VIEs carrying value $ 5,732,372 $ 5,631,925
Liabilities 4,501,146 4,519,945
Variable Interest Entity, Not Primary Beneficiary    
Variable Interest Entity [Line Items]    
VIEs carrying value 245,600 250,400
Variable Interest Entity, Primary Beneficiary | PPM RRG    
Variable Interest Entity [Line Items]    
VIEs carrying value 136,000 142,000
Surplus notes 5,000  
Liabilities $ 136,000 $ 142,000