XML 141 R108.htm IDEA: XBRL DOCUMENT v3.24.0.1
Debt Securities Held-to-maturity - Credit quality indicators (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Debt securities held to maturity credit quality indicator [Line Items]    
Held to maturity securities $ 8,852,825 $ 9,356,739
Obligations of Puerto Rico, States and political subdivisions    
Debt securities held to maturity credit quality indicator [Line Items]    
Held to maturity securities 65,408 65,921
Obligations of Puerto Rico, States and political subdivisions | Munis Payable From Real and Personal Property Taxes    
Debt securities held to maturity credit quality indicator [Line Items]    
Held to maturity securities 18,820 24,660
Watch | Obligations of Puerto Rico, States and political subdivisions | Munis Payable From Real and Personal Property Taxes    
Debt securities held to maturity credit quality indicator [Line Items]    
Held to maturity securities 2,255 13,735
Pass | Obligations of Puerto Rico, States and political subdivisions | Munis Payable From Real and Personal Property Taxes    
Debt securities held to maturity credit quality indicator [Line Items]    
Held to maturity securities $ 16,565 $ 10,925