Consolidated Obligations Bonds (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total par value	$ 89,149	$ 116,963
Federal Home Loan Bank, Consolidated Obligations, Bonds	89,045	116,961
Consolidated Obligation Bonds [Member]
Debt Instrument [Line Items]
Total par value	89,149	116,963
Federal Home Loan Bank, Consolidated Obligations, Bonds	89,045	116,961
Due in one year or less	$ 39,425	$ 63,887
Due in one year or less, Weighted Average Interest Rate	4.85%	5.10%
Due after one year through two years, Weighted Average Interest Rate	5.37%	5.38%
Due after one year through two years	$ 33,523	$ 39,323
Due after two years through three years	$ 3,765	$ 4,159
Due after two years through three years, Weighted Average Interest Rate	3.96%	4.00%
Due after three years through four years	$ 2,678	$ 1,416
Due after three years through four years, Weighted Average Interest Rate	4.00%	3.28%
Due after four years through five years	$ 2,741	$ 2,507
Due after four years through five years, Weighted Average Interest Rate	4.60%	4.19%
Thereafter	$ 7,017	$ 5,671
Thereafter, Weighted Average Interest Rate	3.70%	3.14%
Total par value, Weighted Average Interest Rate	4.88%	5.02%
Premiums	$ 33	$ 52
Discounts and concessions	(25)	(29)
Fair value hedging adjustments	(112)	(25)
Consolidated Obligation Bonds [Member] | Earlier of Contractual Maturity or Next Call Date [Member]
Debt Instrument [Line Items]
Due in one year or less	54,595	76,142
Due after one year through two years	27,528	33,413
Due after two years through three years	2,975	3,479
Due after three years through four years	1,672	880
Due after four years through five years	1,258	1,819
Thereafter	$ 1,121	$ 1,230