v3.25.2
Derivatives and Hedging Activities - Derivatives in Statement of Income and Impact on Interest) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]        
Advances [1] $ 482,767 $ 508,287 $ 929,379 $ 1,023,144
Available-for-sale securities [1] 183,250 222,574 365,012 442,941
Consolidated obligation bonds [1] (581,667) (643,171) (1,151,535) (1,264,584)
Total Net Interest income (Expense) Recorded on Statement of Income - Advances, AFS securities, and CO Bonds) [1] 84,350 87,690 142,856 201,501
Interest-rate related        
Derivative Instruments, Gain (Loss) [Line Items]        
Net impact on net interest income $ 37,273 $ 1,628 $ 63,589 $ 6,300
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Interest Income (Expense), Operating Interest Income (Expense), Operating Interest Income (Expense), Operating Interest Income (Expense), Operating
Interest-rate related | Advances        
Derivative Instruments, Gain (Loss) [Line Items]        
Net impact on net interest income $ 66,616 $ 135,272 $ 135,314 $ 277,876
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Advances Advances Advances Advances
Interest-rate related | AFS Securities        
Derivative Instruments, Gain (Loss) [Line Items]        
Net impact on net interest income $ 66,775 $ 109,325 $ 133,402 $ 218,622
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Available-for-sale securities Available-for-sale securities Available-for-sale securities Available-for-sale securities
Interest-rate related | Consolidation Obligation Bond Member        
Derivative Instruments, Gain (Loss) [Line Items]        
Net impact on net interest income $ (96,118) $ (242,969) $ (205,127) $ (490,198)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Consolidated obligation bonds Consolidated obligation bonds Consolidated obligation bonds Consolidated obligation bonds
Interest Income (Expense), Net | Interest-rate related        
Derivative Instruments, Gain (Loss) [Line Items]        
Net interest settlements on derivatives [2] $ 57,243 $ 29,436 $ 105,679 $ 57,432
Net gains on derivatives² [3] (40,463) 109,147 (100,654) 290,802
Net gains (losses) on hedged items³ [4] 25,381 (121,742) 71,438 (313,346)
Price alignment interest (4,888) (15,213) (12,874) (28,588)
Interest Income | Interest-rate related | Advances        
Derivative Instruments, Gain (Loss) [Line Items]        
Net interest settlements on derivatives [2] 68,336 139,209 141,480 286,559
Net gains on derivatives² [3] (114,677) (16,755) (289,230) 147,104
Net gains (losses) on hedged items³ [4] 113,618 19,650 286,262 (143,275)
Price alignment interest (661) (6,832) (3,198) (12,512)
Interest Income | Interest-rate related | AFS Securities        
Derivative Instruments, Gain (Loss) [Line Items]        
Net interest settlements on derivatives [2] 84,330 130,167 169,425 260,033
Net gains on derivatives² [3] (47,793) 1,304 (137,598) 72,489
Net gains (losses) on hedged items³ [4] 34,202 (14,064) 110,698 (98,394)
Price alignment interest (3,964) (8,082) (9,123) (15,506)
Interest Expense | Interest-rate related | Consolidation Obligation Bond Member        
Derivative Instruments, Gain (Loss) [Line Items]        
Net interest settlements on derivatives [2] (95,423) (239,940) (205,226) (489,160)
Net gains on derivatives² [3] 122,007 124,598 326,174 71,209
Net gains (losses) on hedged items³ [4] (122,439) (127,328) (325,522) (71,677)
Price alignment interest $ (263) $ (299) $ (553) $ (570)
[1] For advances, AFS securities and CO bonds only.
[2] Represents interest income/expense on derivatives in qualifying fair-value hedging relationships. Net interest settlements on derivatives that are not in qualifying fair-value hedging relationships are reported in other income.
[3] Includes increases (decreases) in estimated fair value and swap fees received (paid) resulting from terminations of derivatives.
[4]     Includes increases (decreases) in estimated fair value and amortization of net gains and losses on ineffective and discontinued fair-value hedging relationships.