v3.26.1
SECURITIES - Component of Agency Mortgage-Backed Securities Portfolio by Issuing Agency Concentration (Details) - Agency Mortgage-Backed Securities - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Mortgage-Backed Securities Portfolio [Line Items]    
Total $ 87,768,578 $ 89,628,654
Fannie Mae    
Mortgage-Backed Securities Portfolio [Line Items]    
Total 83,683,437 85,506,672
Freddie Mac    
Mortgage-Backed Securities Portfolio [Line Items]    
Total 3,917,225 3,970,920
Ginnie Mae    
Mortgage-Backed Securities Portfolio [Line Items]    
Total $ 167,916 $ 151,062