v3.25.2
Derivatives And Hedging Activities Derivatives And Hedging Activities (Cumulative Basis Adjustments for Fair Value Hedges) (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Advances [Member]    
Derivatives, Fair Value [Line Items]    
Carrying Value of Hedged Asset, Fair Value Hedge1 [1] $ 16,507,894 $ 15,700,289
Hedged Asset, Statement of Financial Position [Extensible Enumeration] Advances (Note 4) Advances (Note 4)
Asset, Basis Adjustments for Active Hedging Relationships2 $ (16,104) $ (210,116)
Hedged Asset, Basis Adjustments for Discontinued Hedging Relationships2 3,697 5,937
Hedged Asset, Cumulative Amount of Fair Value Hedging Basis Adjustments2 [2] 19,801 216,053
Available-for-Sale Securities [Member]    
Derivatives, Fair Value [Line Items]    
Carrying Value of Hedged Asset, Fair Value Hedge1 [1] $ 9,515,097 $ 7,984,796
Hedged Asset, Statement of Financial Position [Extensible Enumeration] Available-for-sale securities, amortized cost of $14,299,825 and $13,197,724 (Note 3) Available-for-sale securities, amortized cost of $14,299,825 and $13,197,724 (Note 3)
Asset, Basis Adjustments for Active Hedging Relationships2 $ (16,544) $ (258,571)
Hedged Asset, Basis Adjustments for Discontinued Hedging Relationships2 0 0
Hedged Asset, Cumulative Amount of Fair Value Hedging Basis Adjustments2 [2] 16,544 258,571
Consolidated Obligation Discount Notes [Member]    
Derivatives, Fair Value [Line Items]    
Carrying Value of Hedged Liability, Fair Value Hedge1 [1] $ (2,483,146) $ (3,043,704)
Hedged Liability, Statement of Financial Position [Extensible Enumeration] Discount notes (Note 8) Discount notes (Note 8)
Liability, Basis Adjustments for Active Hedging Relationships2 $ 510 $ (837)
Hedged Liability, Basis Adjustments for Discontinued Hedging Relationships2 0 0
Hedged Liability, Cumulative Amount of Fair Value Hedging Basis Adjustments2 [2] 510 (837)
Consolidated Obligation Bonds [Member]    
Derivatives, Fair Value [Line Items]    
Carrying Value of Hedged Liability, Fair Value Hedge1 [1] $ (17,303,204) $ (10,653,310)
Hedged Liability, Statement of Financial Position [Extensible Enumeration] Discount notes (Note 8) Discount notes (Note 8)
Liability, Basis Adjustments for Active Hedging Relationships2 $ 110,052 $ 198,495
Hedged Liability, Basis Adjustments for Discontinued Hedging Relationships2 (5,347) (5,545)
Hedged Liability, Cumulative Amount of Fair Value Hedging Basis Adjustments2 [2] $ 104,705 $ 192,950
[1] Includes only the portion of carrying value representing the hedged items in fair value hedging relationships. For available-for-sale securities, amortized cost is considered to be carrying value (i.e., the fair value adjustment recorded in accumulated other comprehensive income (AOCI) is excluded).
[2] Included in amortized cost of the hedged asset/liability.