Consolidated Obligations (Consolidated Bond Obligations Outstanding By Contractual Maturity) (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Total par value	$ 64,841,960	$ 56,060,550
Total par value, Weighted Average Interest Rate	3.97%	3.97%
Premium	$ 11,138	$ 12,044
Discounts	(3,559)	(3,054)
Concession fees	(12,351)	(12,085)
Hedging adjustments	(104,705)	(192,949)
TOTAL	64,732,483	55,864,506
Contractual Maturity Date, Long-term Debt [Member]
Debt Instrument [Line Items]
Due in one year or less	$ 45,585,085	$ 37,517,835
Due in one year or less, Weighted Average Interest Rate	4.19%	4.35%
Due after one year through two years	$ 8,754,870	$ 7,828,625
Due after one year through two years, Weighted Average Interest Rate	3.40%	3.14%
Due after two years through three years	$ 2,043,300	$ 2,225,545
Due after two years through three years, Weighted Average Interest Rate	2.98%	2.68%
Due after three years through four years	$ 1,491,300	$ 1,634,440
Due after three years through four years, Weighted Average Interest Rate	3.45%	2.97%
Due after four years through five years	$ 1,486,005	$ 1,573,155
Due after four years through five years, Weighted Average Interest Rate	3.33%	3.62%
Thereafter	$ 5,481,400	$ 5,280,950
Thereafter, Weighted Average Interest Rate	3.70%	3.43%

Amount of unrealized gain (loss) recognized in earnings for the cumulative period of the debt obligation in a fair value hedge, as offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective.

No definition available.