Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
OPERATING ACTIVITIES
Net Income	$ 236	$ 205
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation and amortization	(170)	(717)
Net gains (losses) on trading securities	49	(47)
Increase (Decrease) in Fair Value Adjustments on Other Assets (Liabilities) Carried at Fair Value under Fair Value Option	(6)	(20)
Unrealized Gain (Loss) on Derivatives	396	(769)
Other adjustments	8	5
Net change in:
Increase (Decrease) in Accrued Interest Receivable, Net	(73)	(79)
Increase (Decrease) in Other Operating Assets	(1)	(4)
Accrued interest payable	49	(50)
Other liabilities	(3)	10
Total adjustments	249	(1,671)
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation	485	(1,466)
Net change in:
Interest-bearing deposits	(842)	564
Securities purchased under agreements to resell	650	(1,410)
Federal funds sold	1,280	(5,670)
Trading securities
Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment	1,546	0
Proceeds from Maturities, Repayments and Calls of Debt Securities, FV-NI, Held-for-investment	3	2
Payments to Acquire Trading Securities Held-for-investment	(1,404)	(256)
Available-for-sale securities
Proceeds from sales and maturities	463	304
Purchases	(160)	(1,110)
Held-to-maturity securities
Proceeds from sales and maturities	19	19
Advances
Principal collected	149,059	177,180
Originated	(166,104)	(170,561)
Mortgage loans held for portfolio
Principal collected	458	262
Originated or purchased	(835)	(631)
Payment for (Proceeds from) Other Investing Activity	(9)	0
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation	(15,876)	(1,307)
FINANCING ACTIVITIES
Net change in deposits	268	(62)
Payments for (Proceeds from) Hedge, Financing Activities	0	(2)
Net proceeds from issuance of consolidated obligations
Discount notes	283,357	328,953
Bonds	36,912	31,952
Payments for maturing and retiring consolidated obligations
Discount notes	(283,138)	(342,556)
Bonds	(22,667)	(15,089)
Proceeds from issuance of capital stock	4,081	2,026
Payments for repurchases/redemptions of capital stock	(3,251)	(2,284)
Payments for repurchases/redemptions of mandatorily redeemable capital stock	(11)	(1)
Cash dividends paid	(146)	(138)
Net cash provided by (used in) financing activities	15,405	2,803
Net increase (decrease) in cash and due from banks	14	30
Cash and due from banks at the beginning of the period	44	41
cash and due from banks at the end of the period	58	71
SUPPLEMENTAL DISCLOSURES
Interest paid	1,947	2,452
Affordable Housing Program payments	24	10
Voluntary Grants and Donations	17	7
Noncash Investing and Financing Items [Abstract]
Capitalized interest on reverse mortgage securities	64	69
Net Shares Reclassified to Mandatorily Redeemable Capital Stock, Value	53	1
Traded Not Settled Investments	$ 193	$ 0