Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net Cash Provided by (Used in) Operating Activities
Net Income/(Loss)	$ 327	$ 360	$ 376
Adjustments to reconcile net income/(loss) to net cash provided by/(used in) operating activities:
Depreciation and amortization	(53)	(12)	(62)
Change in net fair value of Trading Securities	2	2	0
Change in net fair value adjustment on advances and consolidated obligation bonds held under the fair value option	(101)	21	31
Change in net derivatives and hedging activities	(319)	(18)	(8)
Net OTTI loss, credit-related	11	11	16
Other Adjustments	12	0	0
Net change in:
Accrued interest receivable	(3)	(16)	(45)
Other assets	(23)	(6)	6
Accrued interest payable	1	46	50
Other liabilities	(5)	(30)	(22)
Total adjustments	(478)	(2)	(34)
Net cash provided by/(used in) operating activities	(151)	358	342
Net Cash Provided by (Used in) Investing Activities
Interest-bearing deposits	165	(1,686)	(514)
Securities purchased under agreements to resell	300	4,450	3,750
Federal funds sold	283	7,183	(6,814)
Trading securities:
Proceeds	656	501	902
Purchases of long-term	(1,763)	0	0
AFS securities:
Proceeds	616	709	933
Purchases	(8,739)	(3,637)	0
HTM securities:
Proceeds	3,549	4,764	6,690
Purchases	0	(1,179)	(7,501)
Advances:
Repaid	1,258,362	1,698,247	1,575,597
Originated	(1,249,955)	(1,694,256)	(1,603,226)
Mortgage loans held for portfolio:
Principal collected	968	263	184
Purchases	(1,253)	(1,246)	(1,413)
Other Investing Activities	(38)	0	(9)
Net cash provided by/(used in) investing activities	3,151	14,113	(31,421)
Net Cash Provided by (Used in) Financing Activities
Net change in deposits and other financing activities	256	(18)	114
Net change in borrowings from other FHLBanks	(250)	250	(1,345)
Proceeds from derivative contracts with financing elements	82	0	0
Net proceeds from issuance of consolidated obligations:
Bonds	75,458	73,669	80,506
Discount notes	144,800	143,464	165,408
Payments for matured and retired consolidated obligations:
Bonds	(76,433)	(86,444)	(45,622)
Discount notes	(146,564)	(144,775)	(168,491)
Proceeds from issuance of capital stock	1,186	1,377	1,214
Payments for repurchase/redemption of mandatorily redeemable capital stock	(95)	(84)	(150)
Payments for repurchase of capital stock	(1,129)	(1,669)	(339)
Cash dividends paid	(206)	(259)	(187)
Net cash provided by/(used in) financing activities	(2,895)	(14,489)	31,108
Net increase/(decrease) in cash and due from banks	105	(18)	29
Cash and due from banks beginning of period	13	31	2
Cash and due from banks end of period	118	13	31
Supplemental Disclosures:
Interest paid	2,289	1,891	990
AHP payments	70	68	53
Supplemental Disclosures of Noncash Investing and Financing Activities:
Transfers of other-than-temporarily impaired HTM securities to AFS securities	1	12	0
Transfers of capital stock to mandatorily redeemable capital stock	$ 6	$ 2	$ 2