v3.26.1
Transactions with Related Parties (Statement of Income Effects) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Related Party Transaction [Line Items]        
Interest income on advances (1) $ 571,692 $ 661,021 $ 973,751 $ 1,399,384
Interest Income on MPF loans 55,800 47,950 109,499 93,873
Letters of credit fees 7,513 8,844 15,428 17,607
Principal Owner [Member]        
Related Party Transaction [Line Items]        
Interest income on advances (1) 404,529 380,293 619,118 837,551
Interest Income on MPF loans 2,785 2,949 5,600 5,972
Letters of credit fees $ 4,501 $ 5,860 $ 4,763 $ 12,854