Consolidated Obligations (Consolidated Bonds By Interest-Rate Payment Type) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total par value	$ 56,386,910	$ 49,409,390
Fixed rate [Member]
Debt Instrument [Line Items]
Total par value	21,241,410	28,093,390
Simple variable rate [Member]
Debt Instrument [Line Items]
Total par value	33,518,500	19,524,000
Step [Member]
Debt Instrument [Line Items]
Total par value	$ 1,627,000	$ 1,792,000