Consolidated Obligations CO Bonds Outstanding By Call Feature (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Schedule of Short-term and Long-term Debt [Line Items]
Total par value	$ 24,412,810	$ 23,804,805
Noncallable and nonputable [Member]
Schedule of Short-term and Long-term Debt [Line Items]
Total par value	21,805,810	20,954,805
Callable [Member]
Schedule of Short-term and Long-term Debt [Line Items]
Total par value	$ 2,607,000	$ 2,850,000