v3.25.1
Non-consolidated VIEs - Corporation's VI in non-consolidated VIEs and max exposure to loss (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Variable Interest Entity [Line Items]      
Assets $ 74,038,606 $ 73,045,383 $ 70,936,939
Variable Interest Entity Not Primary Beneficiary      
Variable Interest Entity [Line Items]      
Assets 87,808 90,468  
Maximum exposure to loss 87,808 90,468  
Variable Interest Entity Not Primary Beneficiary | Servicing assets      
Variable Interest Entity [Line Items]      
Assets 81,620 84,356  
Variable Interest Entity Not Primary Beneficiary | Mortgage servicing rights      
Variable Interest Entity [Line Items]      
Assets 81,620 84,356  
Variable Interest Entity Not Primary Beneficiary | Other assets      
Variable Interest Entity [Line Items]      
Assets 6,188 6,112  
Variable Interest Entity Not Primary Beneficiary | Servicing advances      
Variable Interest Entity [Line Items]      
Assets $ 6,188 $ 6,112