Commitments and Contingencies (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring Within One Year		$ 49,176,761	$ 46,707,728
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring After One Year		441,117	389,930
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability		49,617,878	47,097,658
Forward Contracts [Member] | Mortgage Receivable [Member]
Loss Contingencies [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring Within One Year		66,237	100,924
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring After One Year		0	0
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability		66,237	100,924
Consolidated Obligation Bonds [Member]
Loss Contingencies [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring Within One Year	[1]	19,000	0
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring After One Year	[1]	0	0
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	[1]	19,000	0
Discount Notes [Member]
Loss Contingencies [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring Within One Year	[1]	150,000	0
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring After One Year	[1]	0	0
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	[1]	$ 150,000	$ 0

[1] Expiration is based on settlement period rather than underlying contractual maturity of Consolidated Obligations.