v3.26.1
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, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table]    
The following table presents, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships, which also includes amortization of basis adjustments related to hedged items in discontinued fair value hedging relationships, and the impact of those derivatives on the Bank’s net interest income. Also included is the amortization of basis adjustments related to mortgage delivery commitments, which are characterized as derivatives, but are not designated in fair value hedging relationships.
(in thousands)Three months ended June 30, 2026
Hedged item type
Advances
AFS securitiesMortgage loans held for portfolioConsolidated obligations – discount notesConsolidated obligations – bonds
Total interest income/ (expense)
$571,692 $211,446 $55,800 $(258,434)$(578,673)
Gains/(losses) on derivative
$39,030 $87,432 $— $(10,770)$15,783 
Gains/ (losses) on hedged item
(39,037)(87,348)547 9,888 (16,034)
Net interest settlements
6,004 16,354 — 1,886 (28,605)
Effect of derivatives on net interest income
$5,997 $16,438 $547 $1,004 $(28,856)
(in thousands)Six months ended June 30, 2026
Hedged item type
Advances
AFS securitiesMortgage loans held for portfolioConsolidated obligations – discount notesConsolidated obligations – bonds
Total interest income/ (expense)
$973,751 $412,528 $109,499 $(449,891)$(1,046,909)
Gains/(losses) on derivative
$85,487 $132,538 $— $(13,961)$25,285 
Gains/ (losses) on hedged item
(85,467)(132,741)862 14,228 (25,365)
Net interest settlements
13,280 34,429 — 3,252 (62,816)
Effect of derivatives on net interest income
$13,300 $34,226 $862 $3,519 $(62,896)
(in thousands)Three months ended June 30, 2025
Hedged item type
Advances
AFS securitiesMortgage loans held for portfolioConsolidated obligations – discount notesConsolidated obligations – bonds
Total interest income / (expense)
$661,021 $234,243 $47,950 $(78,127)$(862,873)
Gains/(losses) on derivative
$(33,772)$(83,231)$— $(259)$57,614 
Gains/ (losses) on hedged item
33,863 83,629 122 687 (57,491)
Net interest settlements
26,211 35,975 — (631)(56,093)
Effect of derivatives on net interest income
$26,302 $36,373 $122 $(203)$(55,970)
(in thousands)Six months ended June 30, 2025
Hedged item type
Advances
AFS securitiesMortgage loans held for portfolioConsolidated obligations – discount notesConsolidated obligations – bonds
Total interest income / (expense)
$1,399,384 $462,804 $93,873 $(187,238)$(1,772,284)
Gains/(losses) on derivative
$(108,395)$(222,683)$— $(1,537)$144,982 
Gains/ (losses) on hedged item
108,579 222,724 243 2,750 (144,864)
Net interest settlements
54,287 70,775 — (221)(110,383)
Effect of derivatives on net interest income
$54,471 $70,816 $243 $992 $(110,265)
  
Advances $ 571,692 $ 661,021 $ 973,751 $ 1,399,384
Available-for-sale (AFS) securities 211,446 234,243 412,528 462,804
Mortgage loans held for portfolio 55,800 47,950 109,499 93,873
Consolidated obligations - bonds 578,673 862,873 1,046,909 1,772,284
Consolidated obligations - discount notes (258,434) (78,127) (449,891) (187,238)
Net gains (losses) related to derivatives not designated as hedging instruments 858 (7,750) (6,543) (19,617)
Derivative Instruments, Gain (Loss) [Line Items]        
Advances 571,692 661,021 973,751 1,399,384
Available-for-sale (AFS) securities 211,446 234,243 412,528 462,804
Mortgage loans held for portfolio 55,800 47,950 109,499 93,873
Consolidated obligations - bonds 578,673 862,873 1,046,909 1,772,284
Consolidated obligations - discount notes (258,434) (78,127) (449,891) (187,238)
Net gains (losses) related to derivatives not designated as hedging instruments 858 (7,750) (6,543) (19,617)
Net Interest Settlements [Member]        
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Net gains (losses) related to derivatives not designated as hedging instruments 654 1,686 1,376 3,484
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) related to derivatives not designated as hedging instruments 654 1,686 1,376 3,484
Advances [Member]        
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Gains/(Losses) on Derivative 39,030 (33,772) 85,487 (108,395)
Gains/(Losses) on Hedged Item (39,037) 33,863 (85,467) 108,579
Net Interest Settlements on FV Hedges 6,004 26,211 13,280 54,287
Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income 5,997 26,302 13,300 54,471
Derivative Instruments, Gain (Loss) [Line Items]        
Gains/(Losses) on Derivative 39,030 (33,772) 85,487 (108,395)
Gains/(Losses) on Hedged Item (39,037) 33,863 (85,467) 108,579
Net Interest Settlements on FV Hedges 6,004 26,211 13,280 54,287
Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income 5,997 26,302 13,300 54,471
Available-for-sale Securities        
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Gains/(Losses) on Derivative 87,432 (83,231) 132,538 (222,683)
Gains/(Losses) on Hedged Item (87,348) 83,629 (132,741) 222,724
Net Interest Settlements on FV Hedges 16,354 35,975 34,429 70,775
Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income 16,438 36,373 34,226 70,816
Derivative Instruments, Gain (Loss) [Line Items]        
Gains/(Losses) on Derivative 87,432 (83,231) 132,538 (222,683)
Gains/(Losses) on Hedged Item (87,348) 83,629 (132,741) 222,724
Net Interest Settlements on FV Hedges 16,354 35,975 34,429 70,775
Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income 16,438 36,373 34,226 70,816
Mortgage Receivable [Member]        
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Gains/(Losses) on Derivative 0 0 0 0
Gains/(Losses) on Hedged Item 547 122 862 243
Net Interest Settlements on FV Hedges 0 0 0 0
Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income 547 122 862 243
Derivative Instruments, Gain (Loss) [Line Items]        
Gains/(Losses) on Derivative 0 0 0 0
Gains/(Losses) on Hedged Item 547 122 862 243
Net Interest Settlements on FV Hedges 0 0 0 0
Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income 547 122 862 243
Consolidated Obligations Bonds [Member]        
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Gains/(Losses) on Derivative 15,783 57,614 25,285 144,982
Gains/(Losses) on Hedged Item (16,034) (57,491) (25,365) (144,864)
Net Interest Settlements on FV Hedges (28,605) (56,093) (62,816) (110,383)
Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income (28,856) (55,970) (62,896) (110,265)
Derivative Instruments, Gain (Loss) [Line Items]        
Gains/(Losses) on Derivative 15,783 57,614 25,285 144,982
Gains/(Losses) on Hedged Item (16,034) (57,491) (25,365) (144,864)
Net Interest Settlements on FV Hedges (28,605) (56,093) (62,816) (110,383)
Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income (28,856) (55,970) (62,896) (110,265)
Consolidated Obligations Discount Notes        
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Gains/(Losses) on Derivative (10,770) (259) (13,961) (1,537)
Gains/(Losses) on Hedged Item 9,888 687 14,228 2,750
Net Interest Settlements on FV Hedges 1,886 (631) 3,252 (221)
Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income 1,004 (203) 3,519 992
Derivative Instruments, Gain (Loss) [Line Items]        
Gains/(Losses) on Derivative (10,770) (259) (13,961) (1,537)
Gains/(Losses) on Hedged Item 9,888 687 14,228 2,750
Net Interest Settlements on FV Hedges 1,886 (631) 3,252 (221)
Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income $ 1,004 $ (203) $ 3,519 $ 992