v3.26.1
Estimated Fair Values (Fair Value Summary) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Assets:    
Cash and Due from Banks $ 48 $ 19
Securities purchased under agreements to resell   0
Available-for-Sale, Estimated Fair Value 13,816 8,933
Held-to-maturity securities [1] 22,307 24,658
Held-to-maturity securities, fair value 22,160 24,509
Interest Receivable 547 525
Derivative assets 387 334
Netting adjustments and cash collateral [2],[3] 230 230
Liabilities:    
Interest Payable 629 550
Derivative liabilities (1) 2 4
Net adjustment and cash collateral [2],[3] (185) [4] (299)
Fair Value, Inputs, Level 1 [Member]    
Assets:    
Cash and Due from Banks 48 19
Interest-bearing Deposits, Fair Value Disclosure 0 0
Securities purchased under agreements to resell 0 0
Federal funds sold 0 0
Held-to-maturity securities, fair value 0 0
Advances 0 0
Mortgage loans held for portfolio, net 0 0
Interest Receivable 0 0
Liabilities:    
Interest-bearing deposits 0 0
Mandatory redeemable capital stock (4) (1)
Interest Payable 0 0
Fair Value, Inputs, Level 2 [Member]    
Assets:    
Cash and Due from Banks 0 0
Interest-bearing Deposits, Fair Value Disclosure 2,621 2,551
Securities purchased under agreements to resell 10,000 5,500
Federal funds sold 13,522 8,407
Held-to-maturity securities, fair value 22,160 24,509
Advances 101,420 95,045
Mortgage loans held for portfolio, net 70 77
Interest Receivable 547 525
Liabilities:    
Interest-bearing deposits 2,856 2,463
Mandatory redeemable capital stock 0 0
Interest Payable 629 550
Carrying Value [Member]    
Assets:    
Cash and Due from Banks 48 19
Interest-bearing Deposits, Fair Value Disclosure 2,621 2,551
Securities purchased under agreements to resell 10,000 5,500
Federal funds sold 13,522 8,407
Held-to-maturity securities 22,307 24,658
Advances 101,404 94,978
Mortgage loans held for portfolio, net 72 77
Interest Receivable 547 525
Liabilities:    
Interest-bearing deposits 2,856 2,463
Mandatory redeemable capital stock (4) (1)
Interest Payable 629 550
Estimate of Fair Value Measurement [Member]    
Assets:    
Cash and Due from Banks 48 19
Interest-bearing Deposits, Fair Value Disclosure 2,621 2,551
Securities purchased under agreements to resell 10,000 5,500
Federal funds sold 13,522 8,407
Held-to-maturity securities, fair value 22,160 24,509
Advances 101,420 95,045
Mortgage loans held for portfolio, net 70 77
Interest Receivable 547 525
Liabilities:    
Interest-bearing deposits 2,856 2,463
Mandatory redeemable capital stock (4) (1)
Interest Payable 629 550
Discount Notes | Fair Value, Inputs, Level 1 [Member]    
Liabilities:    
Discount notes 0 0
Discount Notes | Fair Value, Inputs, Level 2 [Member]    
Liabilities:    
Discount notes 42,702 44,382
Discount Notes | Carrying Value [Member]    
Liabilities:    
Discount notes 42,715 44,390
Discount Notes | Estimate of Fair Value Measurement [Member]    
Liabilities:    
Discount notes 42,702 44,382
Consolidated Obligation Bonds [Member] | Fair Value, Inputs, Level 1 [Member]    
Liabilities:    
Bonds 0 0
Consolidated Obligation Bonds [Member] | Fair Value, Inputs, Level 2 [Member]    
Liabilities:    
Bonds 109,099 89,253
Consolidated Obligation Bonds [Member] | Carrying Value [Member]    
Liabilities:    
Bonds 109,157 89,251
Consolidated Obligation Bonds [Member] | Estimate of Fair Value Measurement [Member]    
Liabilities:    
Bonds 109,099 89,253
Fair Value, Recurring [Member]    
Liabilities:    
Mandatory redeemable capital stock 0 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Assets:    
Available-for-Sale, Estimated Fair Value [4] 0 0
Derivative assets [4] 0 0
Grantor trust assets (included in Other assets) (1) [4] 28 28
Liabilities:    
Derivative liabilities (1) [4] 0 [3] 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Assets:    
Available-for-Sale, Estimated Fair Value [4] 13,816 8,933
Derivative assets [4] 157 104
Grantor trust assets (included in Other assets) (1) [4] 0 0
Liabilities:    
Derivative liabilities (1) [4] 187 [3] 303
Fair Value, Recurring [Member] | Carrying Value [Member]    
Assets:    
Available-for-Sale, Estimated Fair Value [4] 13,816 8,933
Derivative assets [4] 387 334
Grantor trust assets (included in Other assets) (1) [4] 28 28
Liabilities:    
Derivative liabilities (1) [4] 2 [3] 4
Fair Value, Recurring [Member] | Estimate of Fair Value Measurement [Member]    
Assets:    
Available-for-Sale, Estimated Fair Value [4] 13,816 8,933
Derivative assets [4] 387 334
Grantor trust assets (included in Other assets) (1) [4] 28 28
Liabilities:    
Derivative liabilities (1) [4] $ 2 [3] $ 4
[1] Excludes accrued interest receivable of $36 and $43 as of June 30, 2026 and December 31, 2025, respectively
[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 with the same clearing agents and/or counterparty. Cash collateral posted, including accrued interest, was $482 and $541 as of June 30, 2026 and December 31, 2025, respectively. Cash collateral received, including accrued interest, was $67 and $12 as of June 30, 2026 and December 31, 2025, respectively.
[3] 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 with the same clearing agents and/or counterparty
[4] Financial instruments measured at fair value on a recurring basis.