Derivatives and Hedging Activities Offsetting of Derivative Assets and Derivative Liabilities (Details) - USD ($) $ in Thousands		Mar. 31, 2024		Dec. 31, 2023
Offsetting Assets [Line Items]
Derivative Asset, Netting Adjustments And Cash Collateral	[2]	$ (159,469)	[1]	$ (52,987)	[3]
Derivative assets		41,103		101,991
Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction	[4]	41,103		101,991
Derivative Liability, Netting Adjustments And Cash Collateral	[2]	(53,204)	[1]	(47,942)	[3]
Derivative liabilities		410		9,831
Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction	[4]	410		596
Derivative Liabilities, Additional Net Exposure, Collateral Pledged to Counterparties in Excess of Net Liabilities		806,963		810,559
Uncleared derivatives
Offsetting Assets [Line Items]
Derivative Asset, Total Gross Amount		178,528		149,580
Derivative Asset, Netting Adjustments And Cash Collateral		(172,209)		(139,559)
Derivative Asset, Not Subject to Master Netting Arrangement	[5]	170		1,202
Derivative assets		6,489		11,223
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset		0		0
Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction	[4]	6,489		11,223
Derivative Liability, Total Gross Amount		42,128		42,910
Derivative Liability, Netting Adjustments And Cash Collateral		(41,746)		(42,320)
Derivative Liability, Not Subject to Master Netting Arrangement	[5]	28		6
Derivative liabilities		410		596
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset		0		0
Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction	[4]	410		596
Cleared derivatives
Offsetting Assets [Line Items]
Derivative Asset, Total Gross Amount		21,874		4,196
Derivative Asset, Netting Adjustments And Cash Collateral		12,740		86,572
Derivative Asset, Not Subject to Master Netting Arrangement	[5]	0		0
Derivative assets		34,614		90,768
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset		0		0
Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction	[4]	34,614		90,768
Derivative Liability, Total Gross Amount		11,458		14,857
Derivative Liability, Netting Adjustments And Cash Collateral		(11,458)		(5,622)
Derivative Liability, Not Subject to Master Netting Arrangement	[5]	0		0
Derivative liabilities		0		9,235
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset		0		9,235
Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction	[4]	$ 0		$ 0

[1] Amounts represent the application of the netting requirements that allow the FHLB to settle positive and negative positions and also cash collateral and related accrued interest held or placed by the FHLB with the same counterparty.

[2] Amounts represent the application of the netting requirements that allow the FHLB to settle positive and negative positions, and also cash collateral, including accrued interest, held or placed by the FHLB with the same clearing agent and/or counterparty. Cash collateral posted, including accrued interest, was (in thousands) $24,198 and $98,438 at March 31, 2024 and December 31, 2023, respectively. Cash collateral received, including accrued interest, was (in thousands) $130,463 and $103,483 at March 31, 2024 and December 31, 2023, respectively.

[3] Amounts represent the application of the netting requirements that allow the FHLB to settle positive and negative positions and also cash collateral and related accrued interest held or placed by the FHLB with the same counterparty.

[4] Any over-collateralization at the individual clearing agent and/or counterparty level is not included in the determination of the net amount. At March 31, 2024 and December 31, 2023, the FHLB had additional net credit exposure of (in thousands) $806,963 and $810,559, respectively, due to instances where the FHLB's non-cash collateral to a counterparty exceeded the FHLB's net derivative position.

[5] Includes mortgage delivery commitments that are not subject to an enforceable netting agreement.