v3.26.1
Derivatives and Hedging Activities (Offsetting Assets) (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Offsetting Assets [Line Items]    
Derivative Asset, Fair Value, Gross Asset $ 108,830 $ 79,097
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset [1],[2] 235,783 271,014
Derivative Asset, Net Fair Value Amount, After Offsetting Adjustment 344,613 350,111
Derivative Asset, Not Subject to Master Netting Arrangement 7 6 [3]
Derivative assets 344,620 350,117
Derivative Liability, Fair Value, Gross Liability 78,890 126,233
Derivative Liability, Subject to Master Netting Arrangement, Gross Asset and Collateral, Right to Reclaim Cash, Offset [2] (72,808) (124,837) [1]
Derivative Laibility, Net Fair Value Amount, After Offsetting Adjustment 6,082 1,396
Derivative Liability, Not Subject to Master Netting Arrangement 950 598 [3]
Derivative liabilities (Note 5) 7,032 1,994
Available-for-sale Securities    
Offsetting Assets [Line Items]    
Hedged Asset, Fair Value Hedge [4] 11,039,253 9,799,500
Advances [Member]    
Offsetting Assets [Line Items]    
Hedged Asset, Fair Value Hedge [4] 12,763,415 12,068,299
Over the Counter [Member]    
Offsetting Assets [Line Items]    
Derivative Asset, Fair Value, Gross Asset 82,082 62,698
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset (80,318) (61,535)
Derivative Asset, Net Fair Value Amount, After Offsetting Adjustment 1,764 1,163
Derivative Asset, Not Subject to Master Netting Arrangement 7 6 [3]
Derivative assets 1,771 1,169
Derivative Liability, Fair Value, Gross Liability 76,904 125,345
Derivative Liability, Subject to Master Netting Arrangement, Gross Asset and Collateral, Right to Reclaim Cash, Offset (70,822) (123,949)
Derivative Laibility, Net Fair Value Amount, After Offsetting Adjustment 6,082 1,396
Derivative Liability, Not Subject to Master Netting Arrangement 950 598 [3]
Derivative liabilities (Note 5) 7,032 1,994
Exchange Cleared [Member]    
Offsetting Assets [Line Items]    
Derivative Asset, Fair Value, Gross Asset 26,748 16,399
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset 316,101 332,549
Derivative Asset, Net Fair Value Amount, After Offsetting Adjustment 342,849 348,948
Derivative Asset, Not Subject to Master Netting Arrangement 0 0 [3]
Derivative assets 342,849 348,948
Derivative Liability, Fair Value, Gross Liability 1,986 888
Derivative Liability, Subject to Master Netting Arrangement, Gross Asset and Collateral, Right to Reclaim Cash, Offset (1,986) (888)
Derivative Laibility, Net Fair Value Amount, After Offsetting Adjustment 0 0
Derivative Liability, Not Subject to Master Netting Arrangement 0 0 [3]
Derivative liabilities (Note 5) $ 0 $ 0
[1] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions and also cash collateral and related accrued interest held or placed by the Bank with the same clearing agent and/or counterparties.
[2] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions and also cash collateral and related accrued interest held or placed by the Bank with the same clearing agent and/or counterparties. Cash collateral posted including accrued interest was $350.1 million for June 30, 2026 and $411.3 million for December 31, 2025. Cash collateral received was $41.5 million for June 30, 2026 and $15.5 million for December 31, 2025
[3] Represents derivatives that are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments).
[4] Includes only the portion of amortized cost representing the hedged items in active or discontinued fair value hedging relationships. Amortized cost includes fair value hedging adjustments.