10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2018

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number: 000-51999

FEDERAL HOME LOAN BANK OF DES MOINES

(Exact name of registrant as specified in its charter)

Federally chartered corporation (State or other jurisdiction of incorporation or organization)	42-6000149 (I.R.S. employer identification number)
Financial Center 666 Walnut Street Des Moines, IA (Address of principal executive offices)	50309 (Zip code)

Registrant’s telephone number, including area code: (515) 281-1000

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

x Yes o No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

x Yes o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of large accelerated filer, accelerated filer, smaller reporting company, and emerging growth company in Rule 12b-2 of the Exchange Act.

Large accelerated filer o	Accelerated filer o
Non-accelerated filer x	Smaller reporting company o
	Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

o Yes x No

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

	Shares outstanding as of July 31, 2018
Class B Stock, par value $100	56,603,795

Table of Contents
Part I - Financial Information
Item 1.	Financial Statements (Unaudited)	3
	Statements of Condition	3
	Statements of Income	4
	Statements of Comprehensive Income	5
	Statements of Capital	6
	Statements of Cash Flows	8
	Condensed Notes to the Unaudited Financial Statements	10
	Background Information	10
	Note 1 - Basis of Presentation	11
	Note 2 - Recently Adopted and Issued Accounting Guidance	12
	Note 3 - Trading Securities	15
	Note 4 - Available-for-Sale Securities	16
	Note 5 - Held-to-Maturity Securities	19
	Note 6 - Other-Than-Temporary Impairment	21
	Note 7 - Advances	22
	Note 8 - Mortgage Loans Held for Portfolio	23
	Note 9 - Allowance for Credit Losses	24
	Note 10 - Derivatives and Hedging Activities	28
	Note 11 - Consolidated Obligations	34
	Note 12 - Capital	35
	Note 13 - Fair Value	38
	Note 14 - Commitments and Contingencies	45
	Note 15 - Activities with Stockholders	47
	Note 16 - Activities with Other FHLBanks	48
	Note 17 - Subsequent Events	48
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	49
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	88
Item 4.	Controls and Procedures	88
Part II - Other Information
Item 1.	Legal Proceedings	89
Item 1A.	Risk Factors	90
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	90
Item 3.	Defaults Upon Senior Securities	90
Item 4.	Mine Safety Disclosures	90
Item 5.	Other Information	90
Item 6.	Exhibits	91
Signatures		92

PART I - FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS (UNAUDITED)

FEDERAL HOME LOAN BANK OF DES MOINES

STATEMENTS OF CONDITION

(dollars and shares in millions, except capital stock par value)

(Unaudited)

	June 30, 2018		December 31, 2017
ASSETS
Cash and due from banks	$	201	$	503
Interest-bearing deposits	1		1
Securities purchased under agreements to resell	4,900		4,600
Federal funds sold	4,435		4,250
Investment securities
Trading securities (Note 3)	937		1,177
Available-for-sale securities (Note 4)	19,451		20,796
Held-to-maturity securities (fair value of $3,325 and $3,686) (Note 5)	3,295		3,628
Total investment securities	23,683		25,601
Advances (includes $15 and $0 at fair value under the fair value option) (Note 7)	109,963		102,613
Mortgage loans held for portfolio, net of allowance for credit losses of $1 and $2 (Notes 8 and 9)	7,310		7,096
Accrued interest receivable	305		223
Derivative assets, net (Note 10)	83		100
Other assets	100		112
TOTAL ASSETS	$	150,981	$	145,099
LIABILITIES
Deposits
Interest-bearing	$	914	$	1,013
Non-interest-bearing	114		94
Total deposits	1,028		1,107
Consolidated obligations (Note 11)
Discount notes	43,122		36,682
Bonds	98,468		98,893
Total consolidated obligations	141,590		135,575
Borrowings from other FHLBanks	—		600
Mandatorily redeemable capital stock (Note 12)	373		385
Accrued interest payable	238		210
Affordable Housing Program payable	155		142
Derivative liabilities, net (Note 10)	2		6
Other liabilities	56		53
TOTAL LIABILITIES	143,442		138,078
Commitments and contingencies (Note 14)
CAPITAL (Note 12)
Capital stock - Class B putable ($100 par value); 54 and 51 issued and outstanding shares	5,420		5,068
Retained earnings
Unrestricted	1,593		1,504
Restricted	384		335
Total retained earnings	1,977		1,839
Accumulated other comprehensive income (loss)	142		114
TOTAL CAPITAL	7,539		7,021
TOTAL LIABILITIES AND CAPITAL	$	150,981	$	145,099

The accompanying notes are an integral part of these financial statements.

3

FEDERAL HOME LOAN BANK OF DES MOINES

STATEMENTS OF INCOME

(dollars in millions)

(Unaudited)

	For the Three Months Ended							For the Six Months Ended
	June 30,							June 30,
	2018				2017			2018			2017
INTEREST INCOME
Advances	$	626			$	381		$	1,128		$	714
Interest-bearing deposits	1				1			1			1
Securities purchased under agreements to resell	16				8			28			16
Federal funds sold	22				15			45			27
Trading securities	8				12			16			23
Available-for-sale securities	122				89			232			168
Held-to-maturity securities	22				20			43			40
Mortgage loans held for portfolio	61				59			121			117
Total interest income	878				585			1,614			1,106
INTEREST EXPENSE
Consolidated obligations - Discount notes	170				124			294			233
Consolidated obligations - Bonds	534				286			982			539
Deposits	2				1			5			2
Mandatorily redeemable capital stock	5				4			9			9
Total interest expense	711				415			1,290			783
NET INTEREST INCOME	167				170			324			323
OTHER INCOME (LOSS)
Net gains (losses) on trading securities	(8		)		4			(24		)	9
Net gains (losses) on derivatives and hedging activities	14				(3		)	34			3
Gains on litigation settlements, net	—				—			—			21
Other, net	2				5			6			8
Total other income (loss)	8			—	6			16			41
OTHER EXPENSE
Compensation and benefits	14				14			31			27
Contractual services	3				3			6			6
Professional fees	4				5			7			10
Other operating expenses	6				5			11			10
Federal Housing Finance Agency	3				2			5			5
Office of Finance	1				2			3			4
Other, net	1				—			2			1
Total other expense	32				31			65			63
NET INCOME BEFORE ASSESSMENTS	143				145			275			301
Affordable Housing Program assessments	14				15			28			31
NET INCOME	$	129			$	130		$	247		$	270

The accompanying notes are an integral part of these financial statements.

4

FEDERAL HOME LOAN BANK OF DES MOINES

STATEMENTS OF COMPREHENSIVE INCOME

(dollars in millions)

(Unaudited)

	For the Three Months Ended					For the Six Months Ended
	June 30,					June 30,
	2018			2017		2018		2017
Net income	$	129		$	130	$	247	$	270
Other comprehensive income (loss)
Net unrealized gains (losses) on available-for-sale securities	(17		)	41		28		105
Pension and postretirement benefits	—			1		—		2
Total other comprehensive income (loss)	(17		)	42		28		107
TOTAL COMPREHENSIVE INCOME (LOSS)	$	112		$	172	$	275	$	377

The accompanying notes are an integral part of these financial statements.

5

FEDERAL HOME LOAN BANK OF DES MOINES

STATEMENTS OF CAPITAL

(dollars and shares in millions)

(Unaudited)

	Capital Stock Class B (putable)					Additional Capital from Merger
	Shares		Par Value
BALANCE, DECEMBER 31, 2016	59		$	5,917		$	52
Comprehensive income (loss)	—		—			—
Proceeds from issuance of capital stock	29		2,905			—
Repurchases/redemptions of capital stock	(32	)	(3,171		)	—
Net shares reclassified (to) from mandatorily redeemable capital stock	—		(28		)	—
Cash dividends on capital stock	—		—			(52		)
BALANCE, JUNE 30, 2017	56		$	5,623		$	—
BALANCE, DECEMBER 31, 2017	51		$	5,068		$	—
Comprehensive income (loss)	—		—			—
Proceeds from issuance of capital stock	40		4,015			—
Repurchases/redemptions of capital stock	(37	)	(3,624		)	—
Net shares reclassified (to) from mandatorily redeemable capital stock	—		(39		)	—
Cash dividends on capital stock	—		—
BALANCE, JUNE 30, 2018	54		$	5,420		$	—

The accompanying notes are an integral part of these financial statements.

6

FEDERAL HOME LOAN BANK OF DES MOINES

STATEMENTS OF CAPITAL (continued from previous page)

(dollars and shares in millions)

(Unaudited)

	Retained Earnings								Accumulated Other Comprehensive Income (Loss)			Total Capital
	Unrestricted			Restricted		Total
BALANCE, DECEMBER 31, 2016	$	1,219		$	231	$	1,450		$	(18	)	$	7,401
Comprehensive income (loss)	216			54		270			107			377
Proceeds from issuance of capital stock	—			—		—			—			2,905
Repurchases/redemptions of capital stock	—			—		—			—			(3,171		)
Net shares reclassified (to) from mandatorily redeemable capital stock	—			—		—			—			(28		)
Cash dividends on capital stock	(36		)	—		(36		)	—			(88		)
BALANCE, JUNE 30, 2017	$	1,399		$	285	$	1,684		$	89		$	7,396
BALANCE, DECEMBER 31, 2017	$	1,504		$	335	$	1,839		$	114		$	7,021
Comprehensive income (loss)	198			49		247			28			275
Proceeds from issuance of capital stock	—			—		—			—			4,015
Repurchases/redemptions of capital stock	—			—		—			—			(3,624		)
Net shares reclassified (to) from mandatorily redeemable capital stock	—			—		—			—			(39		)
Cash dividends on capital stock	(109		)	—		(109		)	—			(109		)
BALANCE, JUNE 30, 2018	$	1,593		$	384	$	1,977		$	142		$	7,539

The accompanying notes are an integral part of these financial statements.

7

FEDERAL HOME LOAN BANK OF DES MOINES

STATEMENTS OF CASH FLOWS

(dollars in millions)

(Unaudited)

	For the Six Months Ended
	June 30,
	2018			2017
OPERATING ACTIVITIES
Net income	$	247		$	270
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation and amortization	18			16
Net (gains) losses on trading securities	24			(9		)
Net change in derivatives and hedging activities	87			(1		)
Other adjustments	1			(1		)
Net change in:
Accrued interest receivable	(121		)	(36		)
Other assets	2			(4		)
Accrued interest payable	27			29
Other liabilities	15			(15		)
Total adjustments	53			(21		)
Net cash provided by (used in) operating activities	300			249
INVESTING ACTIVITIES
Net change in:
Interest-bearing deposits	63			17
Securities purchased under agreements to resell	(300		)	2,425
Federal funds sold	(185		)	(5		)
Premises, software, and equipment	(11		)	(21		)
Loans to other FHLBanks	—			200
Trading securities
Proceeds from maturities of long-term	215			13
Available-for-sale securities
Proceeds from maturities of long-term	1,703			1,002
Purchases of long-term	(497		)	(402		)
Held-to-maturity securities
Proceeds from maturities of long-term	344			457
Advances
Repaid	149,512			142,862
Originated or purchased	(157,016		)	(130,163		)
Mortgage loans held for portfolio
Principal collected	445			516
Originated or purchased	(669		)	(566		)
Proceeds from sales of foreclosed assets	3			4
Net cash provided by (used in) investing activities	(6,393		)	16,339

The accompanying notes are an integral part of these financial statements.

8

FEDERAL HOME LOAN BANK OF DES MOINES

STATEMENTS OF CASH FLOWS (continued from previous page)

(dollars in millions)

(Unaudited)

	For the Six Months Ended
	June 30,
	2018			2017
FINANCING ACTIVITIES
Net change in deposits	(11		)	(150		)
Borrowings from other FHLBanks	(600		)	—
Net payments on derivative contracts with financing elements	—			(2		)
Net proceeds from issuance of consolidated obligations
Discount notes	91,697			118,084
Bonds	21,052			26,848
Payments for maturing and retiring consolidated obligations
Discount notes	(85,275		)	(132,486		)
Bonds	(21,303		)	(27,575		)
Proceeds from issuance of capital stock	4,015			2,905
Payments for repurchases/redemptions of capital stock	(3,624		)	(3,171		)
Net payments for repurchases/redemptions of mandatorily redeemable capital stock	(51		)	(212		)
Cash dividends paid	(109		)	(88		)
Net cash provided by (used in) financing activities	5,791			(15,847		)
Net increase (decrease) in cash and due from banks	(302		)	741
Cash and due from banks at beginning of the period	503			223
Cash and due from banks at end of the period	$	201		$	964
SUPPLEMENTAL DISCLOSURES
Cash Transactions:
Interest paid	$	1,249		$	769
Affordable Housing Program payments	16			15
Non-Cash Transactions:
Capitalized interest on reverse mortgage investment securities	39			27
Mortgage loan charge-offs	—			1
Transfers of mortgage loans to other assets	3			3
Capital stock reclassified to (from) mandatorily redeemable capital stock, net	39			28

The accompanying notes are an integral part of these financial statements.

9

FEDERAL HOME LOAN BANK OF DES MOINES

CONDENSED NOTES TO THE UNAUDITED FINANCIAL STATEMENTS

Background Information

The Federal Home Loan Bank of Des Moines (the Bank) is a federally chartered corporation organized on October 31, 1932, that is exempt from all federal, state, and local taxation (except real property taxes) and is one of 11 district Federal Home Loan Banks (FHLBanks). The FHLBanks were created under the authority of the Federal Home Loan Bank Act of 1932 (FHLBank Act). With the passage of the Housing and Economic Recovery Act of 2008 (Housing Act), the Federal Housing Finance Agency (Finance Agency) was established and became the new independent federal regulator of Federal National Mortgage Association (Fannie Mae) and Federal Home Loan Mortgage Corporation (Freddie Mac) (collectively, Enterprises), as well as the FHLBanks and FHLBanks’ Office of Finance, effective July 30, 2008. The Finance Agency’s mission is to ensure that the Enterprises and FHLBanks operate in a safe and sound manner so that they serve as a reliable source of liquidity and funding for housing finance and community investment. The Finance Agency establishes policies and regulations governing the operations of the Enterprises and FHLBanks. Each FHLBank operates as a separate entity with its own management, employees, and board of directors.

The FHLBanks are government-sponsored enterprises (GSEs) that serve the public by enhancing the availability of funds for residential mortgages and targeted community development. The Bank provides a readily available source of funding and liquidity to its member institutions and eligible housing associates in Alaska, Hawaii, Idaho, Iowa, Minnesota, Missouri, Montana, North Dakota, Oregon, South Dakota, Utah, Washington, Wyoming, and the U.S. Pacific territories of American Samoa, Guam, and the Commonwealth of the Northern Mariana Islands. Commercial banks, savings institutions, credit unions, insurance companies, and community development financial institutions (CDFIs) may apply for membership. State and local housing associates that meet certain statutory criteria may also borrow from the Bank; while eligible to borrow, housing associates are not members of the Bank and, as such, are not permitted to hold capital stock.

The Bank is a cooperative. This means the Bank is owned by its customers, whom the Bank calls members. As a condition of membership in the Bank, all members must purchase and maintain membership capital stock based on a percentage of their total assets, subject to a minimum and maximum amount, as of the preceding December 31^st. Each member is also required to purchase and maintain activity-based capital stock to support certain business activities with the Bank.

The Bank’s current and former members own all of the outstanding capital stock of the Bank. Former members own capital stock (included in mandatorily redeemable capital stock) to support business transactions still carried on the Bank’s Statements of Condition. All stockholders, including current and former members, may receive dividends on their capital stock investment to the extent declared by the Bank’s Board of Directors.

10

Note 1 — Basis of Presentation

The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements and should be read in conjunction with the audited financial statements for the year ended December 31, 2017, which are contained in the Bank’s 2017 Annual Report on Form 10-K filed with the SEC on March 12, 2018 (2017 Form 10-K).

In the opinion of management, the unaudited financial information is complete and reflects all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of results for the interim periods. The preparation of financial statements in accordance with GAAP requires management to make assumptions and estimates that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. The results of operations for interim periods are not necessarily indicative of the results to be expected for the full year ending December 31, 2018.

Reclassifications

Certain amounts in the Bank’s2017financial statements and footnotes have been reclassified to conform to the presentation as ofJune 30, 2018. In particular, due to the change in current presentation, variation margin on cleared derivatives has been allocated to the individual derivative instruments. Previously, this amount was included as a component of netting adjustments and cash collateral. For additional details regarding this reclassification, refer to “Note 10—Derivatives and Hedging Activities.”

SIGNIFICANT ACCOUNTING POLICIES

There have been no material changes to the Bank’s significant accounting policies during the six months endedJune 30, 2018. Descriptions of all significant accounting policies are included in “Note 1 — Summary of Significant Accounting Policies” in the 2017 Form 10-K.

11

Note 2 — Recently Adopted and Issued Accounting Guidance

ADOPTED ACCOUNTING GUIDANCE

Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07)

On March 10, 2017, the FASB issued amended guidance that requires an employer to disaggregate the service cost component from the other components of net periodic pension cost and net periodic postretirement benefit cost (net benefit cost). The amendments also provide explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement and allow only the service cost component of net benefit cost to be eligible for capitalization. This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018 and was adopted retrospectively. The adoption of this guidance resulted in a reclassification of other net benefit costs from “Compensation and Benefits” to “Other Expense, Net” in the Bank’s Statements of Income. The adoption of this guidance did not have a material effect on the Bank’s financial condition, result of operations, or cash flows.

Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15)

On August 26, 2016, the FASB issued amendments to clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. This guidance is intended to reduce existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018 and was adopted retrospectively. The adoption of this guidance did not have a direct effect on the Bank’s financial condition, results of operations, or cash flows. However, the Bank did revise its previously reported supplemental interest paid disclosure to align with the clarified accounting guidance.

Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01)

On January 5, 2016, the FASB issued amended guidance on certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This guidance includes, but is not limited to, the following:

• Requires equity investments (with certain exceptions) to be measured at fair value with changes in fair value recognized in income.

• Requires an entity to present separately in other comprehensive income (OCI) the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments.

• Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the statements of condition or the accompanying notes to the financial statements.

• Eliminates the requirement for public entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the statements of condition.

This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018 and was adopted using the modified retrospective approach. The adoption of this guidance affected the Bank’s fair value disclosures. However, the guidance did not have any effect on the Bank’s financial condition, results of operations, or cash flows.

Revenue from Contracts with Customers (ASU 2014-09)

On May 28, 2014, the FASB issued guidance on revenue from contracts with customers. This guidance outlines a single comprehensive model for recognizing revenue arising from contracts with customers and supersedes most current revenue recognition guidance. In addition, this guidance amends the existing requirements for the recognition of a gain or loss on the transfer of non-financial assets that are not in a contract with a customer. This guidance applies to all contracts with customers except those that are within the scope of certain other standards, such as financial instruments, certain guarantees, insurance contracts, and lease contracts. The guidance provides entities with the option of using either of the following adoption methods: a full retrospective method, retrospectively to each prior reporting period presented; or a modified retrospective method, retrospectively with the cumulative effect of initially applying this guidance recognized at the date of initial application.

12

On August 12, 2015, the FASB issued an amendment to defer the effective date of this guidance issued in May 2014 by one year. In 2016, the FASB issued additional amendments to clarify certain aspects of the new revenue guidance. However, these amendments did not change the core principle in the new revenue standard.

This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018, and was adopted retrospectively. Given that the majority of the Bank’s financial instruments and other contractual rights that generate revenue are covered by other U.S. GAAP, the adoption of this guidance did not have a material effect on the Bank’s financial condition, results of operations, and cash flows.

ISSUED ACCOUNTING GUIDANCE

Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12)

On August 28, 2017, the FASB issued amended guidance to improve the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements. This guidance requires that, for fair value hedges, the entire change in the fair value of the hedging instrument included in the assessment of hedge effectiveness be presented in the same income statement line that is used to present the earnings effect of the hedged item. For cash flow hedges, the entire change in the fair value of the hedging instrument included in the assessment of hedge effectiveness must be recorded in OCI. In addition, the amendments include certain targeted improvements to the assessment of hedge effectiveness and permit, among other things, the following:

• Measurement of the change in fair value of the hedged item on the basis of the benchmark rate component of the contractual coupon cash flows determined at hedge inception.

• Measurement of the hedged item in a partial-term fair value hedge of interest-rate risk by assuming the hedged item has a term that reflects only the designated cash flows being hedged.

• Consideration only of how changes in the benchmark interest rate affect a decision to settle a prepayable instrument before its scheduled maturity in calculating the change in the fair value of the hedged item attributable to interest-rate risk.

• For a cash flow hedge of interest-rate risk of a variable-rate financial instrument, an entity could designate as the hedged risk the variability in cash flows attributable to the contractually specified interest-rate.

This guidance becomes effective for the Bank for the interim and annual periods beginning on January 1, 2019, and early adoption is permitted. For all cash flow hedges existing on the date of adoption, this guidance should be applied through a cumulative-effect adjustment to accumulated other comprehensive income (AOCI) with a corresponding adjustment to retained earnings as of the beginning of the year of adoption. The amended presentation and disclosure guidance is required only prospectively. The Bank does not intend to adopt this guidance early. The Bank is in the process of evaluating this guidance, and its effect on the Bank’s financial condition, results of operations, and cash flows has not yet been determined.

Premium Amortization on Purchased Callable Debt Securities (ASU 2017-08)

On March 30, 2017, the FASB issued guidance to shorten the amortization period for certain purchased callable debt securities held at a premium. Specifically, this guidance requires the premium to be amortized to the earliest call date. This guidance does not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. This guidance is effective for the Bank for the interim and annual periods beginning on January 1, 2019, and early adoption is permitted. This guidance should be applied using a modified retrospective method through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Bank does not intend to adopt this guidance early. The Bank has evaluated this guidance and its effect on the Bank’s financial condition, results of operations, and cash flows is not expected to be material.

Measurement of Credit Losses on Financial Instruments (ASU 2016-13)

On June 16, 2016, the FASB issued amended guidance for the accounting of credit losses on financial instruments. The amendments require entities to measure expected credit losses based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The new guidance requires a financial asset, or a group of financial assets, measured at amortized cost to be presented at the net amount expected to be collected. The guidance also requires, among other things, the following:

13

• The statement of income to reflect the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period.

• Entities to determine the allowance for credit losses for purchased financial assets with a more-than-insignificant amount of credit deterioration since origination (PCD) that are measured at amortized cost in a similar manner to other financial assets measured at amortized cost. The initial allowance for credit losses is required to be added to the purchase price of the assets acquired.

• Entities to record credit losses relating to available-for-sale (AFS) debt securities through an allowance for credit losses. The amendments limit the allowance for credit losses to the amount by which fair value is below amortized cost.

• Public entities to further disaggregate the current disclosure of credit quality indicators in relation to the amortized cost of financing receivables by the year of origination (i.e., vintage).

This guidance is effective for the Bank for the interim and annual periods beginning on January 1, 2020. Early application is permitted as of the interim and annual reporting periods beginning after December 15, 2018. This guidance should be applied using a modified-retrospective approach, through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. In addition, entities are required to use a prospective transition approach for PCD assets upon adoption and for debt securities for which an other-than-temporary impairment had been recognized before the effective date. The Bank does not intend to adopt the new guidance early. While the Bank is in the process of evaluating this guidance, the Bank expects the adoption of the guidance may result in an increase in the allowance for credit losses and corresponding expense, including an allowance for debt securities, given the requirement to assess losses for the entire estimated life of the financial asset. The effect on the Bank’s financial condition, results of operations, and cash flows will depend upon the composition of financial assets held by the Bank at the adoption date as well as the economic conditions and forecasts at that time.

Leases (ASU 2016-02)

On February 25, 2016, the FASB issued guidance which requires recognition of lease assets and lease liabilities on the statement of condition and disclosure of key information about leasing arrangements. Specifically, this guidance requires a lessee, of operating or finance leases, to recognize on the statement of condition a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election not to recognize lease assets and lease liabilities. Under previous GAAP, a lessee was not required to recognize lease assets and lease liabilities arising from operating leases on the statement of condition. While this guidance does not fundamentally change lessor accounting, some changes have been made to align that guidance with the lessee guidance and other areas within GAAP.

This guidance becomes effective for the Bank for the interim and annual periods beginning on January 1, 2019, and early application is permitted. In July 2018, the FASB issued amendments that, among other things, provide entities with an additional transition method to adopt the guidance. The new transition method allows entities an option to recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Bank does not intend to adopt this new guidance early. Upon adoption, the Bank expects to report higher assets and liabilities as a result of recording right-of-use assets and lease liabilities on its statements of condition. The Bank is in the process of evaluating this guidance, and its effect on the Bank’s financial condition, results of operations, and cash flows has not yet been determined.

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Note 3 — Trading Securities

MAJOR SECURITY TYPES

Trading securities were as follows (dollars in millions):

	June 30, 2018		December 31, 2017
Non-mortgage-backed securities
U.S. obligations1	$	182	$	197
GSE and Tennessee Valley Authority obligations	57		260
Other2	265		272
Total non-mortgage-backed securities	504		729
Mortgage-backed securities
GSE multifamily	433		448
Total fair value	$	937	$	1,177

1 Represents investment securities backed by the full faith and credit of the U.S. Government.

2 Consists of taxable municipal bonds.

NET GAINS (LOSSES) ON TRADING SECURITIES

The Bank did not sell any trading securities during the three and six months ended June 30,2018 and 2017. During the three and six months ended June 30, 2018, the Bank recorded net holding losses of $8 million and $24 million on its trading securities compared to net holding gains of $4 million and $9 million for the same periods in 2017.

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Note 4 — Available-for-Sale Securities

MAJOR SECURITY TYPES

AFS securities were as follows (dollars in millions):

	June 30, 2018
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
U.S. obligations2	$	2,808	$	13	$	(1	)	$	2,820
GSE and Tennessee Valley Authority obligations	1,001		38		—			1,039
State or local housing agency obligations	908		—		(2		)	906
Other3	260		12		—			272
Total non-mortgage-backed securities	4,977		63		(3		)	5,037
Mortgage-backed securities
U.S. obligations single-family2	4,065		33		(1		)	4,097
GSE single-family	883		7		(5		)	885
GSE multifamily	9,380		59		(7		)	9,432
Total mortgage-backed securities	14,328		99		(13		)	14,414
Total	$	19,305	$	162	$	(16	)	$	19,451

	December 31, 2017
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
U.S. obligations2	$	3,096	$	8	$	(5	)	$	3,099
GSE and Tennessee Valley Authority obligations	1,197		39		—			1,236
State or local housing agency obligations	935		—		(1		)	934
Other3	269		9		—			278
Total non-mortgage-backed securities	5,497		56		(6		)	5,547
Mortgage-backed securities
U.S. obligations single-family2	3,716		11		(1		)	3,726
GSE single-family	983		7		(2		)	988
GSE multifamily	10,482		57		(4		)	10,535
Total mortgage-backed securities	15,181		75		(7		)	15,249
Total	$	20,678	$	131	$	(13	)	$	20,796

1 Amortized cost includes adjustments made to the cost basis of an investment for accretion, amortization, and/or fair value hedge accounting adjustments.

2 Represents investment securities backed by the full faith and credit of the U.S. Government.

3 Consists of taxable municipal bonds and/or Private Export Funding Corporation (PEFCO) bonds.

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UNREALIZED LOSSES

The following tables summarize AFS securities with unrealized losses by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in millions). In cases where the gross unrealized losses for an investment category are less than $1 million, the losses are not reported.

	June 30, 2018
	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
U.S. obligations1	$	316	$	—		$	338	$	(1	)	$	654	$	(1	)
State or local housing agency obligations	13		—			594		(2		)	607		(2		)
Total non-mortgage-backed securities	329		—			932		(3		)	1,261		(3		)
Mortgage-backed securities
U.S. obligations single-family1	497		(1		)	—		—			497		(1		)
GSE single-family	297		(5		)	48		—			345		(5		)
GSE multifamily	2,653		(4		)	859		(3		)	3,512		(7		)
Total mortgage-backed securities	3,447		(10		)	907		(3		)	4,354		(13		)
Total	$	3,776	$	(10	)	$	1,839	$	(6	)	$	5,615	$	(16	)

	December 31, 2017
	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
U.S. obligations1	$	29	$	—		$	1,783	$	(5	)	$	1,812	$	(5	)
State or local housing agency obligations	6		—			655		(1		)	661		(1		)
Total non-mortgage-backed securities	35		—			2,438		(6		)	2,473		(6		)
Mortgage-backed securities
U.S. obligations single-family1	111		—			887		(1		)	998		(1		)
GSE single-family	222		(2		)	53		—			275		(2		)
GSE multifamily	224		(1		)	1,756		(3		)	1,980		(4		)
Total mortgage-backed securities	557		(3		)	2,696		(4		)	3,253		(7		)
Total	$	592	$	(3	)	$	5,134	$	(10	)	$	5,726	$	(13	)

1 Represents investment securities backed by the full faith and credit of the U.S. Government.

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CONTRACTUAL MATURITY

The following table summarizes AFS securities by contractual maturity. Expected maturities of some securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment fees (dollars in millions):

	June 30, 2018				December 31, 2017
Year of Contractual Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Non-mortgage-backed securities
Due in one year or less	$	26	$	26	$	158	$	159
Due after one year through five years	969		976		750		755
Due after five years through ten years	3,160		3,181		3,574		3,583
Due after ten years	822		854		1,015		1,050
Total non-mortgage-backed securities	4,977		5,037		5,497		5,547
Mortgage-backed securities	14,328		14,414		15,181		15,249
Total	$	19,305	$	19,451	$	20,678	$	20,796

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Note 5 — Held-to-Maturity Securities

MAJOR SECURITY TYPES

Held-to-maturity (HTM) securities were as follows (dollars in millions):

	June 30, 2018
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
GSE and Tennessee Valley Authority obligations	$	391	$	49	$	(2	)	$	438
State or local housing agency obligations	427		1		(2		)	426
Total non-mortgage-backed securities	818		50		(4		)	864
Mortgage-backed securities
U.S. obligations single-family2	11		—		—			11
U.S. obligations commercial2	2		—		—			2
GSE single-family	2,453		8		(24		)	2,437
Private-label residential	11		—		—			11
Total mortgage-backed securities	2,477		8		(24		)	2,461
Total	$	3,295	$	58	$	(28	)	$	3,325

	December 31, 2017
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
GSE and Tennessee Valley Authority obligations	$	393	$	65	$	—		$	458
State or local housing agency obligations	454		2		(2		)	454
Total non-mortgage-backed securities	847		67		(2		)	912
Mortgage-backed securities
U.S. obligations single-family2	15		—		—			15
U.S. obligations commercial2	2		—		—			2
GSE single-family	2,752		7		(14		)	2,745
Private-label residential	12		—		—			12
Total mortgage-backed securities	2,781		7		(14		)	2,774
Total	$	3,628	$	74	$	(16	)	$	3,686

1 Amortized cost includes adjustments made to the cost basis of an investment for accretion or amortization.

2 Represents investment securities backed by the full faith and credit of the U.S. Government.

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UNREALIZED LOSSES

The following tables summarize HTM securities with unrealized losses by major security type and the length of time that individual securities have been in a continuous unrealized loss position (dollars in millions). In cases where the gross unrealized losses for an investment category are less than $1 million, the losses are not reported.

	June 30, 2018
	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
GSE and Tennessee Valley Authority obligations	$	90	$	(2	)	$	—	$	—		$	90	$	(2	)
State or local housing agency obligations	$	17	$	—		$	162	$	(2	)	$	179	$	(2	)
Total non-mortgage-backed securities	107		(2		)	162		(2		)	269		(4		)
Mortgage-backed securities
U.S. obligations single-family1	—		—			5		—			5		—
U.S. obligations commercial1	1		—			1		—			2		—
GSE single-family	12		—			1,200		(24		)	1,212		(24		)
Private-label residential	—		—			7		—			7		—
Total mortgage-backed securities	13		—			1,213		(24		)	1,226		(24		)
Total	$	120	$	(2	)	$	1,375	$	(26	)	$	1,495	$	(28	)

	December 31, 2017
	Less than 12 Months				12 Months or More					Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
State or local housing agency obligations	$	2	$	—	$	168	$	(2	)	$	170	$	(2	)
Total non-mortgage-backed securities	2		—		168		(2		)	170		(2		)
Mortgage-backed securities
U.S. obligations single-family1	7		—		1		—			8		—
U.S. obligations commercial1	1		—		1		—			2		—
GSE single-family	42		—		1,427		(14		)	1,469		(14		)
Private-label residential	—		—		8		—			8		—
Total mortgage-backed securities	50		—		1,437		(14		)	1,487		(14		)
Total	$	52	$	—	$	1,605	$	(16	)	$	1,657	$	(16	)

1 Represents investment securities backed by the full faith and credit of the U.S. Government.

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CONTRACTUAL MATURITY

The following table summarizes HTM securities by contractual maturity. Expected maturities of some securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment fees (dollars in millions):

	June 30, 2018				December 31, 2017
Year of Contractual Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Non-mortgage-backed securities
Due in one year or less	$	14	$	14	$	20	$	20
Due after one year through five years	71		71		72		72
Due after five years through ten years	340		362		344		376
Due after ten years	393		417		411		444
Total non-mortgage-backed securities	818		864		847		912
Mortgage-backed securities	2,477		2,461		2,781		2,774
Total	$	3,295	$	3,325	$	3,628	$	3,686

Note 6 — Other-Than-Temporary Impairment

The Bank evaluates its individual AFS and HTM securities in an unrealized loss position for other-than-temporary impairment (OTTI) on a quarterly basis. As part of its evaluation of securities for OTTI, the Bank considers its intent to sell each debt security and whether it is more likely than not that it will be required to sell the security before its anticipated recovery. If either of these conditions is met, the Bank will recognize an OTTI charge to earnings equal to the entire difference between the security’s amortized cost basis and its fair value at the reporting date. For securities in an unrealized loss position that meet neither of these conditions, the Bank performs analyses to determine if any of these securities are other-than-temporarily impaired. The analysis of the Bank’s AFS and HTM investment securities in an unrealized loss position at June 30, 2018 is discussed below:

• U.S. obligations and GSE and Tennessee Valley Authority obligations. The unrealized losses were due primarily to changes in interest rates and not to a significant deterioration in the fundamental credit quality of the obligations. The strength of the issuers’ guarantees through direct obligations or support from the U.S. Government was sufficient to protect the Bank from losses based on current expectations. The Bank expects to recover the amortized cost bases on these securities and neither intends to sell these securities nor considers it more likely than not that it will be required to sell these securities before recovery of their amortized cost bases. As such, the Bank did not consider these securities to be other-than-temporarily impaired at June 30, 2018.

• State or local housing agency obligations. The unrealized losses were due to changes in interest rates and illiquidity in the credit markets, and not to a significant deterioration in the fundamental credit quality of the obligations. The creditworthiness of the issuers and the strength of the underlying collateral and credit enhancements were sufficient to protect the Bank from losses based on current expectations. The Bank does not intend to sell these securities nor is it more likely than not that it will be required to sell these securities before recovery of their amortized cost bases. As such, the Bank did not consider these securities to be other-than-temporarily impaired at June 30, 2018.

• Private-label residential mortgage-backed securities. On a quarterly basis, the Bank engages other designated FHLBanks to perform cash flow analyses on its private-label mortgage-backed securities (private-label MBS). As of June 30, 2018, the Bank compared the present value of cash flows expected to be collected with respect to its private-label MBS to the amortized cost bases of the securities to determine whether a credit loss existed. At June 30, 2018, the Bank’s cash flow analyses for private-label MBS did not project any credit losses. The Bank does not intend to sell its private-label MBS nor is it more likely than not that the Bank will be required to sell its private-label MBS before recovery of their amortized cost bases. As a result, the Bank did not consider any of its private-label MBS to be other-than-temporarily impaired at June 30, 2018.

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Note 7 — Advances

CONTRACTUAL MATURITY

The following table summarizes the Bank’s advances outstanding by contractual maturity (dollars in millions):

	June 30, 2018					December 31, 2017
Year of Contractual Maturity	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Overdrawn demand deposit accounts	$	34		3.10	%	$	1		3.63	%
Due in one year or less	52,016			2.16		45,310			1.62
Due after one year through two years	18,954			2.25		17,094			1.79
Due after two years through three years	20,620			2.31		14,222			1.64
Due after three years through four years	10,543			2.51		17,561			1.79
Due after four years through five years	3,918			2.51		3,089			1.91
Thereafter	4,097			2.83		5,401			2.28
Total par value	110,182			2.28	%	102,678			1.73	%
Premiums	44					53
Discounts	(10		)			(12		)
Fair value hedging adjustments	(253		)			(106		)
Total	$	109,963				$	102,613

The following table summarizes all advances by year of contractual maturity or next call date for callable advances, and by year of contractual maturity or next put date for putable advances (dollars in millions):

	Year of Contractual Maturity or Next Call Date				Year of Contractual Maturity or Next Put Date
	June 30, 2018		December 31, 2017		June 30, 2018		December 31, 2017
Overdrawn demand deposit accounts	$	34	$	1	$	34	$	1
Due in one year or less	83,073		69,971		52,075		45,372
Due after one year through two years	11,161		16,539		18,954		17,094
Due after two years through three years	3,458		3,809		20,595		14,222
Due after three years through four years	7,746		8,511		10,533		17,520
Due after four years through five years	1,895		1,276		3,909		3,073
Thereafter	2,815		2,571		4,082		5,396
Total par value	$	110,182	$	102,678	$	110,182	$	102,678

The Bank offers advances to members and eligible housing associates that may be prepaid on pertinent dates (call dates) prior to maturity without incurring prepayment fees (callable advances). Other advances may require a prepayment fee or credit that makes the Bank financially indifferent to the prepayment of the advance. At June 30, 2018andDecember 31, 2017,the Bank had callable advances outstanding totaling $39.6 billion and $27.0 billion.

The Bank also offers putable advances. With a putable advance, the Bank has the right to terminate the advance from the borrower on the predetermined exercise dates. Generally, these put options are exercised when interest rates increase relative to contractual rates. At June 30, 2018andDecember 31, 2017, the Bank had putable advances outstanding totaling $89 million and $405 million.

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PREPAYMENT FEES

The Bank generally charges a prepayment fee for advances that a borrower elects to terminate prior to the stated maturity or outside of a predetermined call or put date. The fees charged are priced to make the Bank financially indifferent to the prepayment of the advance. For certain advances with symmetrical prepayment features, the Bank may charge the borrower a prepayment fee or pay the borrower a prepayment credit, depending on certain circumstances, such as movements in interest rates, when the advance is prepaid. Prepayment fees and credits are recorded net of fair value hedging adjustments in advance income in the Statements of Income. During the three and six months ended June 30, 2018, the Bank recorded prepayment fees on advances, net of $1 million and $6 million compared to $1 million for both of the same periods in 2017.

CREDIT RISK EXPOSURE AND SECURITY TERMS

The Bank’s potential credit risk from advances is concentrated in commercial banks, savings institutions, and insurance companies. At June 30, 2018 and December 31, 2017, the Bank had outstanding advances of $51.0 billion and $45.8 billion to one member that individually held 10 percent or more of the Bank’s advances, which represents 46 percent and 45 percent of total outstanding advances. For information related to the Bank’s credit risk exposure on advances, refer to “Note 9 — Allowance for Credit Losses.”

Note 8 — Mortgage Loans Held for Portfolio

Mortgage loans held for portfolio includes conventional mortgage loans or government-guaranteed or -insured mortgage loans obtained through the Mortgage Partnership Finance (MPF) program (Mortgage Partnership Finance and MPF are registered trademarks of the FHLBank of Chicago) or Mortgage Purchase Program (MPP). The MPF program, which represents 96 percent of the Bank’s mortgage loans held for portfolio, involves investment by the Bank in single-family mortgage loans held for portfolio that are either purchased from participating financial institutions (PFIs) or funded by the Bank through PFIs. MPF loans may also be acquired through participations in pools of eligible mortgage loans purchased from other FHLBanks. The Bank’s MPF PFIs generally originate, service, and credit enhance mortgage loans that are sold to the Bank. MPF PFIs participating in the servicing release program do not service the loans owned by the Bank. The servicing on these loans is sold concurrently by the MPF PFI to a designated mortgage service provider.

Under the MPP, the Bank acquired single-family mortgage loans that were purchased directly from MPP PFIs. Similar to the MPF program, MPP PFIs generally originated, serviced, and credit enhanced the mortgage loans sold to the Bank. The MPP program represents four percent of the Bank’s mortgage loans held for portfolio. The Bank does not currently purchase mortgage loans under this program. All loans in this portfolio were originated prior to 2006.

The following table presents information on the Bank’s mortgage loans held for portfolio (dollars in millions):

	June 30, 2018			December 31, 2017
Fixed rate, long-term single-family mortgage loans	$	6,281		$	5,998
Fixed rate, medium-term1 single-family mortgage loans	934			1,003
Total unpaid principal balance	7,215			7,001
Premiums	99			98
Discounts	(6		)	(6		)
Basis adjustments from mortgage loan commitments	3			5
Total mortgage loans held for portfolio	7,311			7,098
Allowance for credit losses	(1		)	(2		)
Total mortgage loans held for portfolio, net	$	7,310		$	7,096

1 Medium-term is defined as a term of 15 years or less.

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The following table presents the Bank’s mortgage loans held for portfolio by collateral or guarantee type (dollars in millions):

	June 30, 2018		December 31, 2017
Conventional mortgage loans	$	6,699	$	6,472
Government-insured mortgage loans	516		529
Total unpaid principal balance	$	7,215	$	7,001

For information related to the Bank’s credit risk exposure on mortgage loans held for portfolio, refer to “Note 9 — Allowance for Credit Losses.”

Note 9 — Allowance for Credit Losses

The Bank has established an allowance for credit losses methodology for each of its financing receivable portfolio segments: advances, standby letters of credit, and other extensions of credit to borrowers (collectively, credit products), government-insured mortgage loans held for portfolio, MPF and MPP conventional mortgage loans held for portfolio, and term securities purchased under agreements to resell.

CREDIT PRODUCTS

The Bank manages its credit exposure to credit products through an approach that includes establishing a credit limit for each borrower. This approach includes an ongoing review of each borrower’s financial condition in conjunction with the Bank’s collateral and lending policies to limit risk of loss while balancing borrowers’ needs for a reliable source of funding. In addition, the Bank lends to eligible borrowers in accordance with the FHLBank Act, Finance Agency regulations, and other applicable laws.

The Bank is required by regulation to obtain sufficient collateral to fully secure credit products. The estimated value of the collateral required to secure each borrower’s credit products is calculated by applying collateral discounts, or haircuts, to the unpaid principal balance or market value, if available, of the collateral. Eligible collateral includes (i) fully disbursed whole first mortgages on improved residential real property or securities representing a whole interest in such mortgages, (ii) loans and securities issued, insured, or guaranteed by the U.S. Government or any agency thereof, including mortgage-backed securities (MBS) issued or guaranteed by Fannie Mae, Freddie Mac, or Government National Mortgage Association and Federal Family Education Loan Program guaranteed student loans, (iii) cash deposited with the Bank, and (iv) other real estate-related collateral acceptable to the Bank, such as second lien mortgages, home equity lines of credit, tax-exempt municipal securities, and commercial real estate mortgages, provided such collateral has a readily ascertainable value and the Bank can perfect a security interest in such property. In addition, community financial institutions may also pledge collateral consisting of secured small business, small agri-business, or small farm loans. As additional security, the FHLBank Act provides that the Bank has a lien on each member’s capital stock investment; however, capital stock cannot be pledged as collateral to secure credit exposures.

Collateral arrangements may vary depending upon borrower credit quality, financial condition and performance, borrowing capacity, and overall credit exposure to the borrower. The Bank can also require additional or substitute collateral to protect its security interest. The Bank periodically evaluates and makes changes to its collateral guidelines and collateral haircuts.

Borrowers may pledge collateral to the Bank by executing a blanket pledge agreement, specifically assigning collateral, or placing physical possession of collateral with the Bank or its custodians. The Bank perfects its security interest in all pledged collateral by filing Uniform Commercial Code financing statements or by taking possession or control of the collateral. Under the FHLBank Act, any security interest granted to the Bank by its members, or any affiliates of its members, has priority over the claims and rights of any party (including any receiver, conservator, trustee, or similar party having rights of a lien creditor), unless those claims and rights would be entitled to priority under otherwise applicable law and are held by actual purchasers or by parties that have perfected security interests.

24

Under a blanket pledge agreement, the Bank is granted a security interest in all financial assets of the borrower to fully secure the borrower’s obligation. Other than securities and cash deposits, the Bank does not initially take delivery of collateral from blanket agreement borrowers. In the event of deterioration in the financial condition of a blanket pledge agreement, the Bank has the ability to require delivery of pledged collateral sufficient to secure the borrower’s obligation. With respect to non-blanket pledge agreement borrowers that are federally insured, the Bank generally requires collateral to be specifically assigned. With respect to non-blanket pledge agreement borrowers that are not federally insured (typically insurance companies, CDFIs, and housing associates), the Bank generally takes control of collateral through the delivery of cash, securities, or loans to the Bank or its custodians.

Using a risk-based approach and taking into consideration each borrower’s financial strength, the Bank considers the types and level of collateral to be the primary indicator of credit quality on its credit products. At June 30, 2018 and December 31, 2017, the Bank had rights to collateral on a borrower-by-borrower basis with an unpaid principal balance or market value, if available, in excess of its outstanding extensions of credit.

At June 30, 2018 and December 31, 2017, none of the Bank’s credit products were past due, on non-accrual status, or considered impaired. In addition, there were no troubled debt restructurings (TDRs) related to credit products during the six months ended June 30, 2018 and 2017.

The Bank has never experienced a credit loss on its credit products. Based upon the Bank’s collateral and lending policies, the collateral held as security, and the repayment history on credit products, management has determined that there were no probable credit losses on its credit products as of June 30, 2018 and December 31, 2017. Accordingly, the Bank has not recorded any allowance for credit losses for its credit products.

GOVERNMENT-INSURED MORTGAGE LOANS

The Bank invests in government-insured fixed rate mortgage loans in both the MPF and MPP portfolios that are insured or guaranteed by the Federal Housing Administration, the Department of Veterans Affairs, and/or the Rural Housing Service of the Department of Agriculture. The servicer or PFI obtains and maintains insurance or a guaranty from the applicable government agency. The servicer or PFI is responsible for compliance with all government agency requirements and for obtaining the benefit of the applicable guarantee or insurance with respect to defaulted government-insured mortgage loans. Any losses incurred on these loans that are not recovered from the insurer/guarantor are absorbed by the servicers. As such, the Bank only has credit risk for these loans if the servicer or PFI fails to pay for losses not covered by the guarantee or insurance. Management views this risk as remote and has never experienced a credit loss on its government-insured mortgage loans. As a result, the Bank did not establish an allowance for credit losses for its government-insured mortgage loans at June 30, 2018 and December 31, 2017. Furthermore, none of these mortgage loans have been placed on non-accrual status because of the U.S. Government guarantee or insurance on these loans and the contractual obligation of the loan servicer to repurchase the loans when certain criteria are met.

CONVENTIONAL MORTGAGE LOANS

The Bank’s management of credit risk in the MPF and MPP programs involves several layers of legal loss protection that are defined in agreements among the Bank and its participating PFIs. These loss layers may vary depending on the product alternatives selected and credit profile of the loans. The Bank’s loss protection consists of the following loss layers, in order of priority:

• Homeowner Equity.

• Primary Mortgage Insurance (PMI). At the time of origination, PMI is required on all loans with homeowner equity of less than 20 percent of the original purchase price or appraised value, whichever is less and as applicable to the specific loan.

• First Loss Account (FLA). For each MPF master commitment, the Bank’s potential loss exposure prior to the PFI’s credit enhancement obligation is estimated and tracked in a memorandum account called the FLA.

• Credit Enhancement Obligation of PFI. PFIs have a credit enhancement obligation at the time an MPF mortgage loan is purchased to absorb certain losses in excess of the FLA in order to limit the Bank’s loss exposure to that of an investor in an investment grade MBS. PFIs pledge collateral to secure this obligation.

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Allowance Methodology

The Bank utilizes an allowance for credit losses to reserve for estimated losses in its conventional MPF and MPP mortgage loan portfolios at the balance sheet date. The measurement of the Bank’s MPF and MPP allowance for credit losses is determined by the following:

• reviewing similar conventional mortgage loans for impairment on a collective basis. This evaluation is primarily based on the following factors: (i) current loan delinquencies, (ii) loans migrating to collateral-dependent status, and (iii) actual historical loss severities;

• reviewing conventional mortgage loans for impairment on an individual basis; and

• estimating additional credit losses in the conventional mortgage loan portfolio. These losses result from other factors that may not be captured in the methodology previously described at the balance sheet date, which include but are not limited to certain quantifiable economic factors, such as unemployment rates and home prices impacting housing markets.

The following table summarizes the allowance for credit losses and the recorded investment of the Bank’s conventional mortgage loan portfolio by impairment methodology (dollars in millions):

	June 30, 2018		December 31, 2017
Allowance for credit losses
Collectively evaluated for impairment	$	1	$	2
Recorded investment1
Collectively evaluated for impairment	$	6,759	$	6,530
Individually evaluated for impairment, without a related allowance	59		61
Total recorded investment	$	6,818	$	6,591

1    Represents the unpaid principal balance adjusted for accrued interest, unamortized premiums, discounts, basis adjustments, and direct write-downs.

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CREDIT QUALITY INDICATORS

Key credit quality indicators for mortgage loans include the migration of past due loans, loans in process of foreclosure, and non-accrual loans. The tables below summarize the Bank’s key credit quality indicators for mortgage loans (dollars in millions):

	June 30, 2018
	Conventional MPF/MPP			Government-Guaranteed or -Insured6			Total
Past due 30 - 59 days	$	44		$	18		$	62
Past due 60 - 89 days	13			6			19
Past due 90 - 179 days	10			3			13
Past due 180 days or more	16			4			20
Total past due mortgage loans	83			31			114
Total current mortgage loans	6,735			499			7,234
Total recorded investment of mortgage loans1	$	6,818		$	530		$	7,348
In process of foreclosure (included above)2	$	11		$	2		$	13
Serious delinquency rate3	—		%	1		%	—		%
Past due 90 days or more and still accruing interest4	—			$	7		$	7
Non-accrual mortgage loans5	$	40		$	—		$	40

1 Represents the unpaid principal balance adjusted for accrued interest, unamortized premiums, discounts, basis adjustments, and direct write-downs.

2 Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans depending on their payment status.

3 Represents mortgage loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment.

4 Represents government-insured mortgage loans that are 90 days or more past due.

5 Represents conventional mortgage loans that are 90 days or more past due and TDRs.

6 The Bank did not record any allowance for credit losses on government-guaranteed or -insured mortgage loans at June 30, 2018 and December 31, 2017.

	December 31, 2017
	Conventional MPF/MPP			Government- Guaranteed or -Insured6			Total
Past due 30 - 59 days	$	58		$	19		$	77
Past due 60 - 89 days	16			6			22
Past due 90 - 179 days	15			5			20
Past due 180 days or more	21			6			27
Total past due mortgage loans	110			36			146
Total current mortgage loans	6,481			507			6,988
Total recorded investment of mortgage loans1	$	6,591		$	543		$	7,134
In process of foreclosure (included above)2	$	12		$	2		$	14
Serious delinquency rate3	1		%	2		%	1		%
Past due 90 days or more and still accruing interest4	$	—		$	11		$	11
Non-accrual mortgage loans5	$	48		$	—		$	48

1 Represents the unpaid principal balance adjusted for accrued interest, unamortized premiums, discounts, basis adjustments, and direct write-downs.

2 Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans depending on their payment status.

3 Represents mortgage loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment.

4 Represents government-insured mortgage loans that are 90 days or more past due.

5 Represents conventional mortgage loans that are 90 days or more past due and TDRs.

6 The Bank did not record any allowance for credit losses on government-guaranteed or -insured mortgage loans at June 30, 2018 and December 31, 2017.

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INDIVIDUALLY EVALUATED IMPAIRED LOANS

As previously described, the Bank evaluates certain conventional mortgage loans for impairment individually. A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect all amounts due according to the contractual terms of the loan agreement.

The Bank did not recognize any interest income on impaired loans during the three and six months ended June 30, 2018 and 2017.

During both the three and six months ended June 30, 2018, the average recorded investment of conventional impaired loans without an allowance was $60 million as compared to $68 million and $69 million for the same periods in 2017.

TERM SECURITIES PURCHASED UNDER AGREEMENTS TO RESELL

Term securities purchased under agreements to resell are considered collateralized financing agreements and represent short-term investments. The terms of these investments are structured such that if the market value of the underlying securities decreases below the market value required as collateral, the counterparty must place an equivalent amount of additional securities as collateral or remit an equivalent amount of cash. Otherwise, the dollar value of the resale agreement will decrease accordingly. If an agreement to resell is deemed to be impaired, the difference between the fair value of the collateral and the amortized cost of the agreement will be charged to earnings to establish an allowance for credit losses. Based upon the collateral held as security, the Bank determined that no allowance for credit losses was needed for its term securities purchased under agreements to resell at June 30, 2018 and December 31, 2017.

OFF-BALANCE SHEET CREDIT EXPOSURES

At June 30, 2018 and December 31, 2017, the Bank did not record a liability to reflect an allowance for credit losses for off-balance sheet credit exposures. For additional information on the Bank’s off-balance sheet credit exposures, see “Note 14 — Commitments and Contingencies.”

Note 10 — Derivatives and Hedging Activities

NATURE OF BUSINESS ACTIVITY

The Bank is exposed to interest rate risk primarily from the effect of interest rate changes on its interest-earning assets and its related funding sources. The goal of the Bank’s interest rate risk management strategy is not to eliminate interest rate risk, but to manage it within appropriate limits. To mitigate the risk of loss, the Bank has established policies and procedures, which include guidelines on the amount of exposure to interest rate changes it is willing to accept.

The Bank enters into derivative contracts to manage the interest rate risk exposures inherent in its otherwise unhedged assets and funding positions. Finance Agency regulations and the Bank’s Enterprise Risk Management Policy (ERMP) establish guidelines for derivatives, prohibit trading in or the speculative use of derivatives, and limit credit risk arising from derivatives.

Derivative financial instruments are used by the Bank to achieve its financial and risk management objectives. The Bank reevaluates its hedging strategies from time to time and may change the hedging techniques it uses or may adopt new strategies. The most common ways in which the Bank uses derivatives are to:

• reduce the interest rate sensitivity and repricing gaps of assets and liabilities;

• preserve an interest rate spread between the yield of an asset and the cost of the related liability. Without the use of derivatives, this interest rate spread could be reduced or eliminated when a change in the interest rate on the asset does not match a change in the interest rate on the liability;

• mitigate the adverse earnings effects of the shortening or extension of certain assets and liabilities;

• manage embedded options in assets and liabilities; and

• reduce funding costs by combining a derivative with a consolidated obligation, as the cost of a combined funding structure can be lower than the cost of a comparable consolidated obligation.

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APPLICATION OF DERIVATIVES

The Bank transacts most of its derivative transactions with large banks and major broker-dealers. Over-the-counter derivative transactions may be either executed directly with a counterparty (uncleared derivatives) or cleared through a Futures Commission Merchant (i.e., clearings agent) with a Derivative Clearinghouse Organization (cleared derivatives). Once a derivative transaction has been accepted for clearing by the Derivative Clearinghouse Organization (Clearinghouse), the derivative transaction is novated and the executing counterparty is replaced with the Clearinghouse. The Bank is not a derivative dealer and does not trade derivatives for a short-term profit.

TYPES OF DERIVATIVES

The Bank may use the following derivative instruments:

• interest rate swaps;

• options;

• swaptions;

• interest rate caps and floors; and

• futures/forwards contracts.

The Bank may have the following types of hedged items:

• investment securities;

• advances;

• mortgage loans;

• consolidated obligations; and

• firm commitments.

For additional information on the Bank’s derivative and hedging accounting policy, see “Note 1 — Summary of Significant Accounting Policies” in the 2017 Form 10-K.

FINANCIAL STATEMENT EFFECT AND ADDITIONAL FINANCIAL INFORMATION

The notional amount of derivatives serves as a factor in determining periodic interest payments and cash flows received and paid. However, the notional amount of derivatives represents neither the actual amounts exchanged nor the overall exposure of the Bank to credit and market risk. The risks of derivatives can be measured meaningfully on a portfolio basis that takes into account the counterparties, the types of derivatives, the items being hedged, and any offsets between the derivatives and the items being hedged.

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The following table summarizes the Bank’s notional amount and fair value of derivative instruments and total derivative assets and liabilities. Total derivative assets and liabilities include the effect of netting adjustments and cash collateral. For purposes of this disclosure, the derivative values include the fair value of derivatives and the related accrued interest(dollars in millions):

	June 30, 2018								December 31, 20171
	Notional Amount		Derivative Assets			Derivative  Liabilities			Notional Amount		Derivative Assets		Derivative  Liabilities
Derivatives designated as hedging instruments (fair value hedges)
Interest rate swaps	$	46,828	$	125		$	105		$	52,120	$	77	$	151
Derivatives not designated as hedging instruments (economic hedges)
Interest rate swaps	1,372		29			21			1,407		20		37
Forward settlement agreements (TBAs)	167		—			1			66		—		—
Mortgage delivery commitments	172		—			—			72		—		—
Total derivatives not designated as hedging instruments	1,711		29			22			1,545		20		37
Total derivatives before netting and collateral adjustments	$	48,539	154			127			$	53,665	97		188
Netting adjustments and cash collateral2			(71		)	(125		)			3		(182		)
Total derivative assets and derivative liabilities			$	83		$	2				$	100	$	6

1 To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with netting adjustments and cash collateral.

2 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty. At June 30, 2018 and December 31, 2017, cash collateral posted by the Bank (including accrued interest) was $128 million and $191 million. At June 30, 2018 and December 31, 2017, the Bank received cash collateral (including accrued interest) from clearing agents and/or counterparties of $73 million and $6 million.

The following table summarizes the components of “Net gains (losses) on derivatives and hedging activities” as presented in the Statements of Income (dollars in millions):

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
Derivatives designated as hedging instruments (fair value hedges)
Interest rate swaps	$	7		$	6		$	7		$	10
Derivatives not designated as hedging instruments (economic hedges)
Interest rate swaps	7			(6		)	28			(1		)
Forward settlement agreements (TBAs)	1			—			2			(1		)
Mortgage delivery commitments	—			—			(1		)	1
Net interest settlements	(1		)	(3		)	(3		)	(7		)
Total net gains (losses) related to derivatives not designated as hedging instruments	7			(9		)	26			(8		)
Other1	—			—			1			1
Net gains (losses) on derivatives and hedging activities	$	14		$	(3	)	$	34		$	3

1 Consists of price alignment amount on derivatives for which variation margin is characterized as a daily settled contract.

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The following tables summarize, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships, the net fair value hedge ineffectiveness, and the effect of those derivatives on the Bank’s net interest income (dollars in millions):

	For the Three Months Ended June 30, 2018
Hedged Item Type	Net Gains (Losses) on Derivatives		Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness			Effect on Net Interest Income1
Available-for-sale investments	$	55	$	(48	)	$	7		$	(6	)
Advances2	31		(29		)	2			13
Consolidated obligation bonds	—		(2		)	(2		)	(62		)
Total	$	86	$	(79	)	$	7		$	(55	)

	For the Three Months Ended June 30, 2017
Hedged Item Type	Net Gains (Losses) on Derivatives			Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness			Effect on Net Interest Income1
Available-for-sale investments	$	(41	)	$	49		$	8		$	(24	)
Advances2	(25		)	26			1			(21		)
Consolidated obligation bonds	72			(75		)	(3		)	7
Total	$	6		$	—		$	6		$	(38	)

1 Represents the net interest settlements on derivatives in fair value hedge relationships and the amortization of the financing element of off-market derivatives, both of which are included in the interest income or interest expense line item of the respective hedged item type. During the three months ended June 30, 2018 and 2017, the amortization for off-market derivatives totaled less than $1 million and $4 million.

2 Includes net gains (losses) on fair value hedge firm commitments of forward starting advances.

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The following tables summarize, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships, the net fair value hedge ineffectiveness, and the effect of those derivatives on the Bank’s net interest income (dollars in millions):

	For the Six Months Ended June 30, 2018
Hedged Item Type	Net Gains (Losses) on Derivatives			Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness		Effect on Net Interest Income1
Available-for-sale investments	$	207		$	(203	)	$	4	$	(19	)
Advances2	156			(154		)	2		12
Consolidated obligation bonds	(154		)	155			1		(94		)
Total	$	209		$	(202	)	$	7	$	(101	)

	For the Six Months Ended June 30, 2017
Hedged Item Type	Net Gains (Losses) on Derivatives			Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness			Effect on Net Interest Income1
Available-for-sale investments	$	(4	)	$	18		$	14		$	(53	)
Advances2	8			(6		)	2			(45		)
Consolidated obligation bonds	22			(28		)	(6		)	26
Total	$	26		$	(16	)	$	10		$	(72	)

1 Represents the net interest settlements on derivatives in fair value hedge relationships and the amortization of the financing element of off-market derivatives, both of which are included in the interest income or interest expense line item of the respective hedged item type. During the six months ended June 30, 2018 and 2017, the amortization for off-market derivatives totaled less than $1 million and $9 million.

2 Includes net gains (losses) on fair value hedge firm commitments of forward starting advances.

MANAGING CREDIT RISK ON DERIVATIVES

The Bank is subject to credit risk due to the risk of nonperformance by counterparties to its derivative contracts. The Bank manages credit risk through credit analyses, collateral requirements, and adherence to the requirements set forth in the Bank’s policies, U.S. Commodity Futures Trading Commission regulations, and Finance Agency regulations.

For uncleared derivatives, the degree of credit risk depends on the extent to which master netting arrangements are included in these contracts to mitigate the risk. The Bank requires collateral agreements on its uncleared derivatives.

Certain of the Bank’s uncleared derivative instruments contain provisions that require the Bank to post additional collateral with its counterparties if there is deterioration in the Bank’s credit rating. If the Bank’s credit rating is lowered by a nationally recognized statistical rating organization (NRSRO), the Bank may be required to deliver additional collateral on uncleared derivative instruments in net liability positions, unless the collateral delivery threshold is set to zero. The aggregate fair value of all uncleared derivative instruments with credit-risk related contingent features that were in a net liability position (before cash collateral and related accrued interest) at June 30, 2018 was $1 million, for which the Bank was not required to post collateral in the normal course of business. If the Bank’s credit rating had been lowered from its current rating to the next lower rating, the Bank would not have been required to deliver additional collateral to its uncleared derivative counterparties at June 30, 2018.

For cleared derivatives, the Clearinghouse is the Bank’s counterparty. The Clearinghouse notifies the clearing agent of the required initial and variation margin and the clearing agent in turn notifies the Bank. The Bank utilizes one Clearinghouse for all cleared derivative transactions, CME Clearing. Variation margin payments with CME Clearing are legally characterized as daily settlement payments, rather than collateral. Initial margin is considered cash collateral. The requirement that the Bank post initial and variation margin through the clearing agent, to the Clearinghouse, exposes the Bank to institutional credit risk if the clearing agent or the Clearinghouse fails to meet its obligations. The use of cleared derivatives is intended to mitigate credit risk exposure because a central counterparty is substituted for individual counterparties and collateral/payments for changes in the fair value of cleared derivatives is posted daily through a clearing agent.

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The Clearinghouse determines initial margin requirements and generally credit ratings are not factored into the initial margin. However, clearing agents may require additional initial margin to be posted based on credit considerations, including, but not limited to, credit rating downgrades. The Bank was not required to post additional initial margin by its clearing agents, based on credit considerations at June 30, 2018.

OFFSETTING OF DERIVATIVE ASSETS AND DERIVATIVE LIABILITIES

The Bank presents derivative instruments, related cash collateral, including initial margin, received or pledged, and associated accrued interest on a net basis by clearing agent and/or by counterparty when it has met the netting requirements. Additional information regarding these agreements is provided in “Note 1 — Summary of Significant Accounting Policies” in the 2017 Form 10-K.

The Bank has analyzed the enforceability of offsetting rights incorporated in its cleared derivative transactions and has determined that the exercise of those offsetting rights by a non-defaulting party under these transactions should be upheld under applicable law upon an event of default, including a bankruptcy, insolvency, or similar proceeding involving the Clearinghouse or the clearing agent, or both. Based on this analysis, the Bank presents a net derivative receivable or payable for all of its transactions through a particular clearing agent with a particular Clearinghouse.

The following table presents the fair value of derivative instruments meeting or not meeting the netting requirements and the related collateral received from or pledged to counterparties (dollars in millions):

	June 30, 2018
Derivative Instruments Meeting Netting Requirements	Amount Recognized		Gross Amount of Netting Adjustments and Cash Collateral			Total Derivative Assets and Total Derivative Liabilities
Derivative Assets
Uncleared derivatives	$	151	$	(150	)	$	1
Cleared derivatives	3		79			82
Total	$	154	$	(71	)	$	83
Derivative Liabilities
Uncleared derivatives	$	120	$	(118	)	$	2
Cleared derivatives	7		(7		)	—
Total	$	127	$	(125	)	$	2

	December 31, 2017
Derivative Instruments Meeting Netting Requirements	Amount Recognized1		Gross Amount of Netting Adjustments and Cash Collateral			Total Derivative Assets and Total Derivative Liabilities
Derivative Assets
Uncleared derivatives	$	88	$	(87	)	$	1
Cleared derivatives	9		90			99
Total	$	97	$	3		$	100
Derivative Liabilities
Uncleared derivatives	$	170	$	(164	)	$	6
Cleared derivatives	18		(18		)	—
Total	$	188	$	(182	)	$	6

1    To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with gross amount of netting adjustments and cash collateral.

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Note 11 — Consolidated Obligations

Consolidated obligations consist of bonds and discount notes. The FHLBanks issue consolidated obligations through the Office of Finance as their agent. Bonds are issued primarily to raise intermediate- and long-term funds for the Bank and are not subject to any statutory or regulatory limits on their maturity. Discount notes are issued primarily to raise short-term funds for the Bank and have original maturities of up to one year. Discount notes sell at or below their face amount and are redeemed at par value when they mature.

Although the Bank is primarily liable for the portion of consolidated obligations issued on its behalf, it is also jointly and severally liable with the other FHLBanks for the payment of principal and interest on all FHLBank System consolidated obligations. The Finance Agency, at its discretion, may require any FHLBank to make principal and/or interest payments due on any consolidated obligation, whether or not the primary obligor FHLBank has defaulted on the payment of that consolidated obligation. The Finance Agency has never exercised this discretionary authority. At June 30, 2018 and December 31, 2017, the total par value of outstanding consolidated obligations of the FHLBanks was $1,059.9 billion and $1,034.2 billion.

DISCOUNT NOTES

The following table summarizes the Bank’s discount notes (dollars in millions):

	June 30, 2018					December 31, 2017
	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Par value	$	43,241		1.87	%	$	36,740		1.20	%
Discounts and concessions1	(119		)			(58		)
Total	$	43,122				$	36,682

1 Concessions represent fees paid to dealers in connections with the issuance of certain consolidated obligation discount notes.

BONDS

The following table summarizes the Bank’s bonds outstanding by contractual maturity (dollars in millions):

	June 30, 2018					December 31, 2017
Year of Contractual Maturity	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Due in one year or less	$	57,307		1.87	%	$	50,077		1.32	%
Due after one year through two years	24,341			1.90		32,249			1.43
Due after two years through three years	3,034			2.59		3,177			2.84
Due after three years through four years	7,207			1.71		7,422			1.69
Due after four years through five years	2,124			2.31		1,507			2.42
Thereafter	4,917			3.37		4,752			3.10
Total par value	98,930			1.97	%	99,184			1.54	%
Premiums	168					193
Discounts and concessions1	(52		)			(60		)
Fair value hedging adjustments	(578		)			(424		)
Total	$	98,468				$	98,893

1 Concessions represent fees paid to dealers in connections with the issuance of certain consolidated obligation bonds.

The following table summarizes the Bank’s bonds outstanding by call features (dollars in millions):

	June 30, 2018		December 31, 2017
Non-callable or non-putable	$	94,742	$	97,196
Callable	4,188		1,988
Total par value	$	98,930	$	99,184

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Note 12 — Capital

CAPITAL STOCK

The Bank’s capital stock has a par value of $100 per share, and all shares are issued, redeemed, and repurchased only at the stated par value. The Bank generally issues a single class of capital stock (Class B stock) and has two subclasses of capital stock: membership and activity-based. Each member must purchase and hold membership capital stock in an amount equal to 0.12 percent of its total assets as of the preceding December 31^st, subject to a cap of $10 million and a floor of $10,000. Each member is also required to purchase activity-based capital stock equal to 4.00 percent of its advances and mortgage loans outstanding in the Bank’s Statements of Condition. All capital stock issued is subject to a five year notice of redemption period.

The capital stock requirements established in the Bank’s Capital Plan are designed so that the Bank can remain adequately capitalized as member activity changes. The Bank’s Board of Directors may make adjustments to the capital stock requirements within ranges established in the Capital Plan.

EXCESS STOCK

Capital stock owned by members in excess of their investment requirement is deemed excess capital stock. Under its Capital Plan, the Bank, at its discretion and upon 15 days’ written notice, may repurchase excess membership capital stock. The Bank, at its discretion, may also repurchase excess activity-based capital stock to the extent that (i) the excess capital stock balance exceeds an operational threshold set forth in the Capital Plan, which is currently set at zero, or (ii) a member submits a notice to redeem all or a portion of the excess activity-based capital stock. At June 30, 2018 and December 31, 2017, the Bank’s excess capital stock outstanding was less than $1 million.

MANDATORILY REDEEMABLE CAPITAL STOCK

The Bank reclassifies capital stock subject to redemption from equity to a liability (mandatorily redeemable capital stock) at the time shares meet the definition of a mandatorily redeemable financial instrument. This occurs after a member provides written notice of intention to withdraw from membership, becomes ineligible for continuing membership, or attains non-member status by merger or consolidation, charter termination, or other involuntary termination from membership. Dividends on mandatorily redeemable capital stock are classified as interest expense in the Statements of Income.

As a result of the final rule on membership issued by the Finance Agency effective February 19, 2016, the eligibility requirements for FHLBank members were changed rendering captive insurance companies ineligible for FHLBank membership. On the effective date of the final rule, the Bank reclassified the total outstanding capital stock held by all of the Bank’s captive insurance companies, to mandatorily redeemable capital stock. In accordance with the final rule, on February 17, 2017, the Bank terminated the membership of all captive insurance company members that were admitted as members after September 12, 2014 (the date the Finance Agency proposed this rule) and repurchased outstanding capital stock to these captive insurance company members in the amount of $148 million. Captive insurance company members that were admitted as members prior to September 12, 2014 will also have their memberships terminated no later than February 19, 2021. At June 30, 2018 and December 31, 2017, the Bank’s mandatorily redeemable capital stock totaled $373 million and $385 million. During the three and sixmonths endedJune 30, 2018, interest expense on mandatorily redeemable capital stock was$5 millionand $9 million. Interest expense on mandatorily redeemable capital stock was$4 millionand$9 millionfor thethreeandsixmonths endedJune 30, 2017.

The following table summarizes changes in mandatorily redeemable capital stock (dollars in millions):

	For the Three Months Ended June 30,
	2018			2017
Balance, beginning of period	$	356		$	494
Capital stock reclassified to (from) mandatorily redeemable capital stock, net	36			18
Net payments for repurchases/redemptions of mandatorily redeemable capital stock	(19		)	(32		)
Balance, end of period	$	373		$	480

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The following table summarizes changes in mandatorily redeemable capital stock (dollars in millions):

	For the Six Months Ended June 30,
	2018			2017
Balance, beginning of period	$	385		$	664
Capital stock reclassified to (from) mandatorily redeemable capital stock, net	39			28
Net payments for repurchases/redemptions of mandatorily redeemable capital stock	(51		)	(212		)
Balance, end of period	$	373		$	480

The following table summarizes the Bank’s mandatorily redeemable capital stock by year of contractual redemption (dollars in millions):

Year of Contractual Redemption1	June 30, 2018		December 31, 2017
Due in one year or less	$	—	$	4
Due after one year through two years	2		2
Due after two years through three years	1		—
Due after three years through four years	11		1
Due after four years through five years	26		22
Thereafter2	317		341
Past contractual redemption date due to outstanding activity with the Bank	16		15
Total	$	373	$	385

1 At the Bank’s election, the mandatorily redeemable capital stock may be redeemed prior to the expiration of the five year redemption period that commences on the date of the notice of redemption, or in the case of captive insurance company members, on the date of the membership termination.

2 Represents mandatorily redeemable capital stock resulting from the Finance Agency rule previously discussed that makes captive insurance companies ineligible for FHLBank membership. The related mandatorily redeemable capital stock is not required to be redeemed until five years after the member's termination.

RESTRICTED RETAINED EARNINGS

The Bank entered into a Joint Capital Enhancement Agreement (JCE Agreement) with all of the other FHLBanks in February 2011. The JCE Agreement, as amended, is intended to enhance the capital position of the Bank over time. It requires the Bank to allocate 20 percent of its quarterly net income to a separate restricted retained earnings account until the balance of that account equals at least one percent of its average balance of outstanding consolidated obligations for the previous quarter. The restricted retained earnings are not available to pay dividends. At June 30, 2018 and December 31, 2017, the Bank’s restricted retained earnings account totaled $384 million and $335 million.

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ACCUMULATED OTHER COMPREHENSIVE INCOME

The following table summarizes changes in AOCI (dollars in millions):

	Net unrealized gains (losses) on AFS securities (Note 4)			Pension and postretirement benefits			Total AOCI
Balance, March 31, 2017	$	50		$	(3	)	$	47
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	41			—			41
Reclassifications from AOCI to net income
Amortization - pension and postretirement	—			1			1
Net current period other comprehensive income (loss)	41			1			42
Balance, June 30, 2017	$	91		$	(2	)	$	89
Balance, March 31, 2018	$	163		$	(4	)	$	159
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	(17		)	—			(17		)
Net current period other comprehensive income (loss)	(17		)	—			(17		)
Balance, June 30, 2018	$	146		$	(4	)	$	142
Balance, December 31, 2016	$	(14	)	$	(4	)	$	(18	)
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	105			—			105
Reclassifications from AOCI to net income
Amortization - pension and postretirement	—			2			2
Net current period other comprehensive income (loss)	105			2			107
Balance, June 30, 2017	$	91		$	(2	)	$	89
Balance, December 31, 2017	$	118		$	(4	)	$	114
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	28			—			28
Net current period other comprehensive income (loss)	28			—			28
Balance, June 30, 2018	$	146		$	(4	)	$	142

REGULATORY CAPITAL REQUIREMENTS

The Bank is subject to three regulatory capital requirements:

• Risk-based capital. The Bank must maintain at all times permanent capital greater than or equal to the sum of its credit, market, and operations risk capital requirements, all calculated in accordance with Finance Agency regulations.Only permanent capital, defined as Class B stock (including mandatorily redeemable capital stock), and retained earnings can satisfy this risk-based capital requirement.

• Regulatory capital. The Bank is required to maintain a minimum four percent capital-to-asset ratio, which is defined as total regulatory capital divided by total assets. Total regulatory capital includes Class B stock (including mandatorily redeemable capital stock) and retained earnings. It does not include AOCI.

• Leverage capital. The Bank is required to maintain a minimum five percent leverage ratio, which is defined as the sum of permanent capital weighted 1.5 times and nonpermanent capital weighted 1.0 times, divided by total assets. The Bank did not hold any nonpermanent capital at June 30, 2018 and December 31, 2017.

If the Bank’s capital falls below the required levels, the Finance Agency has authority to take actions necessary to return it to levels that it deems to be consistent with safe and sound business operations.

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The following table shows the Bank’s compliance with the Finance Agency’s regulatory capital requirements (dollars in millions):

	June 30, 2018						December 31, 2017
	Required			Actual			Required			Actual
Regulatory capital requirements
Risk-based capital	$	1,178		$	7,770		$	1,041		$	7,292
Regulatory capital	$	6,039		$	7,770		$	5,804		$	7,292
Leverage capital	$	7,549		$	11,656		$	7,255		$	10,937
Capital-to-assets ratio	4.00		%	5.15		%	4.00		%	5.03		%
Leverage ratio	5.00		%	7.72		%	5.00		%	7.54		%

Note 13 — Fair Value

Fair value amounts are determined by the Bank using available market information and reflect the Bank’s best judgment of appropriate valuation methods. GAAP defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (i.e., and exit price). The fair value hierarchy requires an entity to maximize the use of significant observable inputs and minimize the use of significant unobservable inputs when measuring fair value. The inputs are evaluated and an overall level for the fair value measurement is determined. This overall level is an indication of market observability of the fair value measurement for the asset or liability.

The fair value hierarchy prioritizes the inputs used to measure fair value into three broad levels:

• Level 1 Inputs. Quoted prices (unadjusted) for identical assets or liabilities in an active market that the Bank can access on the measurement date.

• Level 2 Inputs. Inputs other than quoted prices within Level 1 that are observable inputs for the asset or liability, either directly or indirectly. If the asset or liability has a specified (contractual) term, a Level 2 input must be observable for substantially the full term of the asset or liability. Level 2 inputs include the following: (i) quoted prices for similar assets or liabilities in active markets, (ii) quoted prices for identical or similar assets or liabilities in markets that are not active, (iii) inputs other than quoted prices that are observable for the asset or liability (e.g., interest rates and yield curves that are observable at commonly quoted intervals and implied volatilities, and (iv) market-corroborated inputs.

• Level 3 Inputs. Unobservable inputs for the asset or liability.

The Bank reviews its fair value hierarchy classifications on a quarterly basis. Changes in the observability of the valuation inputs may result in a reclassification of certain assets or liabilities. These reclassifications are reported as transfers in/out as of the beginning of the quarter in which the changes occur. There were no such transfers during the six months ended June 30, 2018 and 2017.

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The following table summarizes the carrying value, fair value, and fair value hierarchy of the Bank’s financial instruments at June 30, 2018 (dollars in millions). The Bank records trading securities, AFS securities, derivative assets, derivative liabilities, certain advances, and certain other assets at fair value on a recurring basis, and on occasion certain mortgage loans held for portfolio on a non-recurring basis. The Bank records all other financial assets and liabilities at amortized cost. The fair values do not represent an estimate of the overall market value of the Bank as a going concern, which would take into account future business opportunities and the net profitability of assets and liabilities.

				Fair Value
Financial Instruments	Carrying Value			Level 1			Level 2			Level 3		Netting Adjustments and Cash Collateral1			Total
Assets
Cash and due from banks	$	201		$	201		$	—		$	—	$	—		$	201
Interest-bearing deposits	1			—			1			—		—			1
Securities purchased under agreements to resell	4,900			—			4,900			—		—			4,900
Federal funds sold	4,435			—			4,435			—		—			4,435
Trading securities	937			—			937			—		—			937
Available-for-sale securities	19,451			—			19,451			—		—			19,451
Held-to-maturity securities	3,295			—			3,314			11		—			3,325
Advances	109,963			—			110,031			—		—			110,031
Mortgage loans held for portfolio, net	7,310			—			7,189			63		—			7,252
Accrued interest receivable	305			—			305			—		—			305
Derivative assets, net	83			—			154			—		(71		)	83
Other assets	29			29			—			—		—			29
Liabilities
Deposits	(1,028		)	—			(1,028		)	—		—			(1,028		)
Consolidated obligations
Discount notes	(43,122		)	—			(43,119		)	—		—			(43,119		)
Bonds	(98,468		)	—			(98,539		)	—		—			(98,539		)
Total consolidated obligations	(141,590		)	—			(141,658		)	—		—			(141,658		)
Mandatorily redeemable capital stock	(373		)	(373		)	—			—		—			(373		)
Accrued interest payable	(238		)	—			(238		)	—		—			(238		)
Derivative liabilities, net	(2		)	—			(127		)	—		125			(2		)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty.

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The following table summarizes the carrying value, fair value, and fair value hierarchy of the Bank’s financial instruments at December 31, 2017 (dollars in millions):

				Fair Value
Financial Instruments	Carrying Value			Level 1			Level 2			Level 3		Netting Adjustments and Cash Collateral1		Total
Assets
Cash and due from banks	$	503		$	503		$	—		$	—	$	—	$	503
Interest-bearing deposits	1			—			1			—		—		1
Securities purchased under agreements to resell	4,600			—			4,600			—		—		4,600
Federal funds sold	4,250			—			4,250			—		—		4,250
Trading securities	1,177			—			1,177			—		—		1,177
Available-for-sale securities	20,796			—			20,796			—		—		20,796
Held-to-maturity securities	3,628			—			3,674			12		—		3,686
Advances	102,613			—			102,708			—		—		102,708
Mortgage loans held for portfolio, net	7,096			—			7,124			64		—		7,188
Accrued interest receivable	223			—			223			—		—		223
Derivative assets, net	100			—			97			—		3		100
Other assets	28			28			—			—		—		28
Liabilities
Deposits	(1,107		)	—			(1,107		)	—		—		(1,107		)
Borrowings from other FHLBanks	(600		)	—			(600		)	—		—		(600		)
Consolidated obligations
Discount notes	(36,682		)	—			(36,674		)	—		—		(36,674		)
Bonds	(98,893		)	—			(99,150		)	—		—		(99,150		)
Total consolidated obligations	(135,575		)	—			(135,824		)	—		—		(135,824		)
Mandatorily redeemable capital stock	(385		)	(385		)	—			—		—		(385		)
Accrued interest payable	(210		)	—			(210		)	—		—		(210		)
Derivative liabilities, net	(6		)	—			(188		)	—		182		(6		)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty. To conform with current presentation $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with netting adjustments and cash collateral.

SUMMARY OF VALUATION TECHNIQUES AND PRIMARY INPUTS

The valuation techniques and primary inputs used to develop the measurement of fair value for assets and liabilities that are measured at fair value on a recurring or non-recurring basis in the Statements of Condition are outlined below.

Trading and AFS Investment Securities. The Bank’s valuation technique incorporates prices from multiple designated third-party pricing vendors, when available. The pricing vendors generally use various proprietary models to price investment securities. The inputs to those models are derived from various sources including, but not limited to, benchmark securities and yields, reported trades, dealer estimates, issuer spreads, bids, offers, and other market-related data. Since many investment securities do not trade on a daily basis, the pricing vendors use available information, as applicable, such as benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing to determine the prices for individual securities. Each pricing vendor has an established process in place to challenge investment valuations, which facilitates resolution of questionable prices identified by the Bank. Annually, the Bank conducts reviews of its pricing vendors to confirm and further augment its understanding of the vendors’ pricing processes, methodologies, and control procedures for investment securities.

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The Bank’s valuation technique for estimating the fair values of its investment securities first requires the establishment of a median price for each security. All prices that are within a specified tolerance threshold of the median price are included in the cluster of prices that are averaged to compute a default price. All prices that are outside the threshold (outliers) are subject to further analysis (including, but not limited to, comparison to prices provided by an additional third-party valuation service, prices for similar securities, and/or non-binding dealer estimates) to determine if an outlier is a better estimate of fair value. If an outlier (or some other price identified in the analysis) is determined to be a better estimate of fair value, then the outlier (or the other price as appropriate) is used as the final price rather than the default price. Alternatively, if the analysis confirms that an outlier (or outliers) is (are) in fact not representative of fair value and the default price is the best estimate, then the default price is used as the final price. In all cases, the final price is used to determine the fair value of the security. In limited instances, when no prices are available from one of the designated pricing services, the Bank obtains prices from dealers.

As of June 30, 2018 and December 31, 2017, multiple prices were received for the majority of the Bank’s trading and AFS investment securities. Based on the Bank’s review of the pricing methods and controls employed by the third-party pricing vendors and the relative lack of dispersion among the vendor prices, the Bank believes its final prices are representative of the prices that would have been received if the assets had been sold at the measurement date (i.e., exit prices) and further, that the fair value measurements are classified appropriately in the fair value hierarchy.

Advances Recorded under the Fair Value Option. The fair value of advances recorded under the fair value option is determined by calculating the present value of the expected future cash flows and includes accrued interest receivable. The discount rates used in these calculations are equivalent to the replacement advance rates for advances with similar terms. In accordance with Finance Agency regulations, advances generally require a prepayment fee sufficient to make the Bank financially indifferent to a borrower’s decision to prepay the advances. Therefore, the fair value of advances assumes no prepayment risk.

The Bank uses the following inputs for measuring the fair value of advances:

• Consolidated Obligation Curve (CO Curve). The Office of Finance constructs a curve, referred to as the CO Curve, using the U.S. Treasury Curve as a base curve which is then adjusted by adding indicative spreads obtained from market-observable sources. These market indications are generally derived from pricing indications from dealers, historical pricing relationships, recent GSE trades, and secondary market activity. The Bank utilizes the CO Curve as its input to fair value for advances because it represents the Bank’s cost of funds and is used to price advances.

• Volatility assumption. Market-based expectations of future interest rate volatility implied from current market prices for similar options.

• Spread assumption. Represents a spread adjustment to the CO Curve.

Impaired Mortgage Loans Held for Portfolio. The fair value of impaired mortgage loans held for portfolio is estimated by obtaining property values from an external pricing vendor. This vendor utilizes multiple pricing models that generally factor in market observable inputs, including actual sales transactions and home price indices. The Bank applies an adjustment to these values to capture certain limitations in the estimation process and takes into consideration estimated selling costs and expected PMI proceeds. In limited instances, the Bank may estimate the fair value of an impaired mortgage loan by calculating the present value of expected future cash flows discounted at the loan’s effective interest rate.  

Derivative Assets and Liabilities. The fair value of derivatives is generally estimated using standard valuation techniques such as discounted cash flow analyses and comparisons to similar instruments, and includes variation margin payments for daily settled contracts. In limited instances, fair value estimates for interest-rate related derivatives may be obtained using an external pricing model that utilizes observable market data. The Bank is subject to credit risk in derivatives transactions due to the potential nonperformance of its derivatives counterparties. The use of cleared derivatives is intended to mitigate credit risk exposure because a central counterparty is substituted for individual counterparties and collateral/payments is posted daily, through a clearing agent, for changes in the fair value of cleared derivatives. To mitigate credit risk on uncleared derivatives, the Bank enters into master netting agreements with its counterparties as well as collateral agreements that provide for the delivery of collateral at specified levels tied to those counterparties’ credit ratings. The Bank has evaluated the potential for the fair value of its derivatives to be affected by counterparty credit risk and its own credit risk and has determined that no adjustments were significant to the overall fair value measurements.

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The fair values of the Bank’s derivative assets and derivative liabilities include accrued interest receivable/payable and cash collateral remitted to/received from counterparties. The estimated fair values of the accrued interest receivable/payable and cash collateral approximate their carrying values due to their short-term nature. The fair values of derivatives are netted by clearing agent and/or counterparty if the netting requirements are met. If these netted amounts are positive, they are classified as an asset and, if negative, they are classified as a liability.

The Bank’s discounted cash flow model utilizes market-observable inputs (inputs that are actively quoted and can be validated to external sources). The Bank uses the following inputs for measuring the fair value of interest-related derivatives:

• Discount rate assumption. The Bank utilizes the Overnight-Index Swap (OIS) curve. 

• Forward interest rate assumption. The Bank utilizes the London Interbank Offered Rate (LIBOR) swap curve.

• Volatility assumption. Market-based expectations of future interest rate volatility implied from current market prices for similar options.

For forward settlement agreements (TBAs), the Bank utilizes TBA securities prices that are determined by coupon class and expected term until settlement. For mortgage delivery commitments, the Bank utilizes TBA securities prices adjusted for factors such as credit risk and servicing spreads.

Other Assets. These represent grantor trust assets, which are carried at estimated fair value based on quoted market prices as of the last business day of the reporting period.

Subjectivity of Estimates. Estimates of the fair value of financial assets and liabilities using the methods previously described are highly subjective and require judgments regarding significant matters, such as the amount and timing of future cash flows, prepayment speed assumptions, expected interest rate volatility, possible distributions of future interest rates used to value options, and the selection of discount rates that appropriately reflect market and credit risks. The use of different assumptions could have a material effect on the fair value estimates.

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FAIR VALUE ON A RECURRING BASIS

The following table summarizes, for each hierarchy level, the Bank’s assets and liabilities that are measured at fair value in the Statements of Condition atJune 30, 2018(dollars in millions):

Recurring Fair Value Measurements	Level 1		Level 2			Level 3		Netting Adjustments and Cash Collateral1			Total
Assets
Trading securities
U.S. obligations	$	—	$	182		$	—	$	—		$	182
GSE and Tennessee Valley Authority obligations	—		57			—		—			57
Othernon-MBS	—		265			—		—			265
GSE multifamily MBS	—		433			—		—			433
Total trading securities	—		937			—		—			937
Available-for-sale securities
U.S. obligations	—		2,820			—		—			2,820
GSE and Tennessee Valley Authority obligations	—		1,039			—		—			1,039
State or local housing agency obligations	—		906			—		—			906
Other non-MBS	—		272			—		—			272
U.S. obligations single-family MBS	—		4,097			—		—			4,097
GSE single-family MBS	—		885			—		—			885
GSE multifamily MBS	—		9,432			—		—			9,432
Total available-for-sale securities	—		19,451			—		—			19,451
Advances2	—		15			—		—			15
Derivative assets, net
Interest-rate related	—		154			—		(71		)	83
Other assets	29		—			—		—			29
Total recurring assets at fair value	$	29	$	20,557		$	—	$	(71	)	$	20,515
Liabilities
Derivative liabilities, net
Interest-rate related	—		(126		)	—		125			(1		)
Forward settlement agreements (TBAs)	—		(1		)	—		—			(1		)
Total recurring liabilities at fair value	$	—	$	(127	)	$	—	$	125		$	(2	)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty.

2 Represents financial instruments recorded under the fair value option.

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The following table summarizes, for each hierarchy level, the Bank’s assets and liabilities that are measured at fair value in the Statements of Condition at December 31, 2017 (dollars in millions):

Recurring Fair Value Measurements	Level 1		Level 2			Level 3		Netting Adjustments and Cash Collateral1		Total
Assets
Trading securities
U.S. obligations	$	—	$	197		$	—	$	—	$	197
GSE and Tennessee Valley Authority obligations	—		260			—		—		260
Othernon-MBS	—		272			—		—		272
GSE multifamily MBS	—		448			—		—		448
Total trading securities	—		1,177			—		—		1,177
Available-for-sale securities
U.S. obligations	—		3,099			—		—		3,099
GSE and Tennessee Valley Authority obligations	—		1,236			—		—		1,236
State or local housing agency obligations	—		934			—		—		934
Other non-MBS	—		278			—		—		278
U.S. obligations single-family MBS	—		3,726			—		—		3,726
GSE single-family MBS	—		988			—		—		988
GSE multifamily MBS	—		10,535			—		—		10,535
Total available-for-sale securities	—		20,796			—		—		20,796
Derivative assets, net
Interest-rate related	—		97			—		3		100
Other assets	28		—			—		—		28
Total recurring assets at fair value	$	28	$	22,070		$	—	$	3	$	22,101
Liabilities
Derivative liabilities, net
Interest-rate related	—		(188		)	—		182		(6		)
Total recurring liabilities at fair value	$	—	$	(188	)	$	—	$	182	$	(6	)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty. To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with netting adjustments and cash collateral.

FAIR VALUE ON A NON-RECURRING BASIS

The Bank measures certain impaired mortgage loans held for portfolio at level 3 fair value on a non-recurring basis. These assets are subject to fair value adjustments in certain circumstances. At June 30, 2018 and December 31, 2017, impaired mortgage loans held for portfolio recorded at fair value as a result of a non-recurring change in fair value were $1 million and $7 million. These fair values were as of the date the fair value adjustment was recorded during the six months ended June 30, 2018 and year-ended December 31, 2017.

FAIR VALUE OPTION

The fair value option provides an irrevocable option to elect fair value as an alternative measurement for selected financial assets, financial liabilities, unrecognized firm commitments, and written loan commitments not previously carried at fair value. It require entities to display the fair value of those assets and liabilities for which it has chosen to use fair value on the face of the Statements of Condition. Fair value is used for both the initial and subsequent measurement of the designated assets, liabilities, and commitments, with the changes in fair value recognized in income.

The Bank elects the fair value option for certain financial instruments when a hedge relationship does not qualify for hedge accounting. These fair value elections are made primarily in an effort to mitigate the potential income statement volatility that can arise when an economic derivative is adjusted for changes in fair value but the related hedged item is not.

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For financial instruments recorded under the fair value option, the related contractual interest income and interest expense are recorded as part of net interest income in the Statements of Income. The remaining changes are recorded as “Net gains (losses) on financial instruments held at fair value” in the Statements of Income.

For the three and six months ended June 30, 2018 and 2017, net gains on financial instruments held at fair value were less than $1 million. At June 30, 2018 and December 31, 2017, the Bank determined no credit risk adjustments for nonperformance were necessary to the instruments recorded under the fair value option.

At December 31, 2017, advances recorded under the fair value option were less than $1 million. The following table summarizes the difference between the unpaid principal balance and fair value of outstanding instruments for which the fair value option was elected at June 30, 2018 (dollars in million):

	June 30, 2018
	Unpaid Principal Balance		Fair Value		Fair Value Over (Under) Unpaid Principal
Advances1	$	15	$	15	$	—

1    AtJune 30, 2018 none of the advances were 90 days or more past due or had been placed on non-accrual status.

Note 14 — Commitments and Contingencies

Joint and Several Liability. The FHLBanks have joint and several liability for all consolidated obligations issued. Accordingly, if an FHLBank were unable to repay any consolidated obligation for which it is the primary obligor, each of the other FHLBanks could be called upon by the Finance Agency to repay all or part of such obligations. No FHLBank has ever been asked or required to repay the principal or interest on any consolidated obligation on behalf of another FHLBank. AtJune 30, 2018andDecember 31, 2017, the total par value of outstanding consolidated obligations issued on behalf of other FHLBanks for which the Bank is jointly and severally liable was approximately $917.7 billion and $898.3 billion.

The following table summarizes additional off-balance sheet commitments for the Bank (dollars in millions):

	June 30, 2018						December 31, 2017
	Expire within one year		Expire after one year		Total		Total
Standby letters of credit1	$	9,111	$	166	$	9,277	$	8,594
Standby bond purchase agreements	117		587		704		755
Commitments to purchase mortgage loans	172		—		172		72
Commitments to issue bonds	264		—		264		—
Commitments to fund advances	779		1		780		1,138

1 Excludes commitments to issue standby letters of credit of $53 million and $7 million at June 30, 2018 and December 31, 2017.

Standby Letters of Credit. The Bank issues standby letters of credit on behalf of its members to support certain obligations of the members to third-party beneficiaries. These standby letters of credit are subject to the same collateralization and borrowing limits that are applicable to advances. Standby letters of credit may be offered to assist members in facilitating residential housing finance, community lending, and asset-liability management, and to provide liquidity. In particular, members often use standby letters of credit as collateral for deposits from federal and state government agencies. Standby letters of credit are executed with members for a fee. If the Bank is required to make payment for a beneficiary’s draw, the member either reimburses the Bank for the amount drawn or, subject to the Bank’s discretion, the amount drawn may be converted into a collateralized advance to the member. The original terms of standby letters of credit range from less than one month to 13 years, currently no later than 2025. The carrying value of guarantees related to standby letters of credit are recorded in “Other liabilities” in the Statements of Condition and amounted to $2 million and $3 million at June 30, 2018andDecember 31, 2017.

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The Bank monitors the creditworthiness of its standby letters of credit based on an evaluation of its borrowers. The Bank has established parameters for the measurement, review, classification, and monitoring of credit risk related to these standby letters of credit. Based on management’s credit analyses and collateral requirements, the Bank does not deem it necessary to have any provision for credit losses on these standby letters of credit. All standby letters of credit are subject to the same collateralization and borrowing limits that apply to advances and are fully collateralized at the time of issuance.

Standby Bond Purchase Agreements. The Bank has entered into standby bond purchase agreements with state housing associates within its district whereby, for a fee, it agrees to serve as a standby liquidity provider if required, to purchase and hold the housing associate’s bonds until the designated marketing agent can find a suitable investor or the housing associate repurchases the bonds according to a schedule established by the agreement. Each standby bond purchase agreement includes the provisions under which the Bank would be required to purchase the bonds. At June 30, 2018, the Bank had standby bond purchase agreements with seven housing associates. The standby bond purchase commitments entered into by the Bank have original expiration periods of up to seven years, currently no later than 2024. During both the six months ended June 30, 2018 and 2017, the Bank was not required to purchase any bonds under these agreements.

Commitments to Purchase Mortgage Loans. The Bank enters into commitments that unconditionally obligate it to purchase mortgage loans from its members. Commitments are generally for periods not to exceed 45 days. These commitments are considered derivatives and their estimated fair value at June 30, 2018 and December 31, 2017 is reported in “Note 10 — Derivatives and Hedging Activities” as mortgage delivery commitments.

Commitments to Issue Bonds. At June 30, 2018, the Bank had commitments to issue $264 million of consolidated obligation bonds. At December 31, 2017, the Bank had no commitments to issue consolidated obligation bonds.

Commitments to Fund Advances. The Bank enters into commitments that legally bind it to fund additional advances up to 24 months in the future. At June 30, 2018 and December 31, 2017, the Bank had commitments to fund advances of $0.8 billion and $1.1 billion.

Other Commitments. For each MPF master commitment, the Bank’s potential loss exposure prior to the PFI’s credit enhancement obligation is estimated and tracked in a memorandum account called the FLA. For absorbing certain losses in excess of the FLA, PFIs are paid a credit enhancement fee, a portion of which may be performance-based. To the extent the Bank experiences losses under the FLA, it may be able to recapture performance-based credit enhancement fees paid to the PFI to offset these losses. The FLA balance for all MPF master commitments with a PFI credit enhancement obligation was $108 million and $104 million at June 30, 2018 and December 31, 2017.

Legal Proceedings. As a result of the merger with the Federal Home Loan Bank of Seattle (Merger), the Bank has been involved in a number of legal proceedings initiated by the Seattle Bank against various entities relating to its purchases and subsequent impairment of certain private-label MBS. Of the 11 cases initially filed, one has been dismissed, two have been settled in part and dismissed in part, and eight have been settled. The Bank appealed the one complete dismissal and two partial dismissals covering the claims related to five certificates across three different cases. The appellate court affirmed the dismissal of the claims related to four certificates in December 2017 and affirmed the dismissal of the remaining certificate in May 2018. In January 2018, the Bank filed petitions for discretionary review of the appellate court’s rulings in December related to four of the certificates with the Washington Supreme Court. On May 3, 2018, the Court granted those petitions. The aggregate consideration paid for these four certificates is $567 million. Oral arguments have been scheduled for October 9, 2018. In June 2018, the Bank filed a petition for discretionary review of the appellate court’s ruling in May on the fifth certificate. The aggregate consideration paid for that one certificate is $200 million. The Washington Supreme Court has not yet acted on that petition. Other than the private-label MBS litigation, the Bank does not believe any legal proceedings to which it is a party could have a material impact on its financial condition, results of operations, or cash flows.

Litigation settlement gains are considered realized and recorded when the Bank receives cash or assets that are readily convertible to known amounts of cash or claims to cash. In addition, litigation settlement gains are considered realizable and recorded when the Bank enters into a signed agreement that is not subject to appeal, where the counterparty has the ability to pay, and the amount to be received can be reasonably estimated. Prior to being realized or realizable, the Bank considers potential litigation settlement gains to be gain contingencies, and therefore they are not recorded in the Statements of Income.

46

The Bank records legal expenses related to litigation settlements as incurred in other expenses in the Statements of Income with the exception of certain legal expenses related to litigation settlement awards that are contingent based fees for the attorneys representing the Bank. The Bank incurs and recognizes these contingent based legal fees only when litigation settlement awards are realized, at which time these fees are netted against the gains recognized on the litigation settlement.  During the three months ended June 30, 2018 and 2017, and during the six months ended June 30, 2018, the Bank did not recognize net gains on private-label MBS litigation settlements. During the six months ended June 30, 2017, the Bank recognized $21 million in net gains on litigation settlements through other income (loss), due to the settlement of one of the Bank’s private-label MBS claims.

Note 15 — Activities with Stockholders

The Bank is a cooperative. This means the Bank is owned by its customers, whom the Bank calls members. As a condition of membership in the Bank, all members must purchase and maintain membership capital stock based on a percentage of their total assets, subject to a minimum and maximum amount, as of the preceding December 31^st. Each member is also required to purchase and maintain activity-based capital stock to support certain business activities with the Bank.

TRANSACTIONS WITH DIRECTORS’ FINANCIAL INSTITUTIONS

In the normal course of business, the Bank extends credit to its members whose directors and officers serve as Bank directors (Directors’ Financial Institutions). Finance Agency regulations require that transactions with Directors’ Financial Institutions be made on the same terms and conditions as those with any other member.

The following table summarizes the Bank’s outstanding transactions with Directors’ Financial Institutions (dollars in millions):

	June 30, 2018			December 31, 2017
	Amount		% of Total	Amount		% of Total
Advances	$	5,134	5	$	6,036	6
Mortgage loans	86		1	68		1
Deposits	11		1	39		4
Capital stock	256		4	297		5

BUSINESS CONCENTRATIONS

The Bank considers itself to have business concentrations with stockholders owning 10 percent or more of its total capital stock outstanding (including mandatorily redeemable capital stock). At June 30, 2018, the Bank had the following business concentrations with stockholders (dollars in millions):

	Capital Stock					Mortgage		Interest
Stockholder	Amount		% of Total1	Advances		Loans4		Income2
Wells Fargo Bank, N.A.	$	2,052	35	$	51,025	$	27	$	550
Superior Guaranty Insurance Company3	19		—	—		463		—
Total	$	2,071	35	$	51,025	$	490	$	550

1 Pursuant to applicable Finance Agency regulations, the Bank’s voting structure limits the voting rights of these stockholders and other members holding a significant amount of the Bank’s capital stock.

2 Represents interest income earned on advances during the six months ended June 30, 2018. Interest income on mortgage loans is excluded from this table as this interest relates to the borrower, not to the stockholder.

3 Superior Guaranty Insurance Company is an affiliate of Wells Fargo Bank, N.A.

4 PFI rights and obligations associated with MPP mortgage loans of $27 million were transferred from Wells Fargo Trust Company, N.A. (formerly Wells Fargo Bank Northwest N.A.) to Wells Fargo Bank, N.A. during the three months ended June 30, 2018.

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At December 31, 2017, the Bank had the following business concentrations with stockholders (dollars in millions):

	Capital Stock					Mortgage		Interest
Stockholder	Amount		% of Total1	Advances		Loans		Income2
Wells Fargo Bank, N.A.	$	1,843	34	$	45,825	$	—	$	834
Superior Guaranty Insurance Company3	22		—	—		520		—
Wells Fargo Bank Northwest N.A.3	1		—	—		30		—
Total	$	1,866	34	$	45,825	$	550	$	834

1 Pursuant to applicable Finance Agency regulations, the Bank’s voting structure limits the voting rights of these stockholders and other members holding a significant amount of the Bank’s capital stock.

2 Represents interest income earned on advances during the year ended December 31, 2017. Interest income on mortgage loans is excluded from this table as this interest relates to the borrower, not to the stockholder.

3 Superior Guaranty Insurance Company and Wells Fargo Bank Northwest, N.A. were affiliates of Wells Fargo Bank, N.A at December 31, 2017.

Note 16 — Activities with Other FHLBanks

Overnight Funds. The Bank may lend or borrow unsecured overnight funds to or from other FHLBanks. All such transactions are at current market rates. The following table summarizes loan activity to other FHLBanks during the six months ended June 30, 2018 and 2017 (dollars in millions):

Other FHLBank	Beginning Balance		Loans		Principal Repayment			Ending Balance
2018
Boston	$	—	$	800	$	(800	)	$	—
San Francisco	—		300		(300		)	—
Dallas	—		500		(500		)	—
	$	—	$	1,600	$	(1,600	)	$	—
2017
San Francisco	$	200	$	—	$	(200	)	$	—

During the six months ended June 30, 2017, the Bank did not borrow funds from other FHLBanks. The following table summarizes borrowing activity from other FHLBanks during the six months ended June 30, 2018 (dollars in millions):

Other FHLBank	Beginning Balance		Borrowing		Principal Payment			Ending Balance
2018
Atlanta	$	200	$	—	$	(200	)	$	—
Boston	400		—		(400		)	—
	$	600	$	—	$	(600	)	$	—

At June 30, 2018 and 2017, none of the previous transactions were outstanding on the Bank’s Statements of Condition. The interest income and expense related to this activity were immaterial.

Advance Transfers. The Bank may purchase or sell advances from/to other FHLBanks. These transfers are accounted for in the same manner as an advances origination with a member bank. During the six months ended June 30, 2017, a member of the Federal Home Loan Bank of Chicago (Chicago Bank) re-designated its charter, and concurrently transferred its Federal Home Loan Bank membership from the Chicago Bank to the Des Moines Bank. In conjunction with this transfer and at request of the member, the Bank purchased $37 million of par value advances outstanding to this member from the Chicago Bank and recognized related premiums of $1 million. There were no advance transfers during the six months ended June 30, 2018.

Note 17 — Subsequent Events

Subsequent events have been evaluated from July 1, 2018, through the time of the Form 10-Q filing with the Securities and Exchange Commission. No material subsequent events requiring disclosure were identified.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Our Management’s Discussion and Analysis (MD&A) of Financial Condition and Results of Operations should be read in conjunction with our financial statements and condensed notes at the beginning of this Form 10-Q and in conjunction with our MD&A and Annual Report on Form 10-K for the fiscal year ended December 31, 2017, filed with the Securities and Exchange Commission (SEC) on March 12, 2018 (2017 Form 10-K). Our MD&A is designed to provide information that will help the reader develop a better understanding of our financial statements, key financial statement changes from quarter to quarter, and the primary factors driving those changes. Our MD&A is organized as follows:

CONTENTS
Forward-Looking Information	50
Executive Overview	51
Conditions in the Financial Markets	54
Selected Financial Data	56
Results of Operations	57
Net Income	57
Net Interest Income	58
Other Income (Loss)	61
Hedging Activities	62
Statements of Condition	66
Financial Highlights	66
Cash and Due from Banks	66
Advances	66
Mortgage Loans	68
Investments	69
Consolidated Obligations	70
Capital	70
Derivatives	71
Liquidity and Capital Resources	72
Critical Accounting Policies and Estimates	75
Legislative and Regulatory Developments	76
Risk Management	77

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FORWARD-LOOKING INFORMATION

Statements contained in this report, including statements describing the objectives, projections, estimates, or future predictions in our operations, may be forward-looking statements. These statements may be identified by the use of forward-looking terminology, such as believes, projects, expects, anticipates, estimates, intends, strategy, plan, could, should,may, and will or their negatives or other variations on these terms. By their nature, forward-looking statements involve risk or uncertainty, and actual results could differ materially from those expressed or implied or could affect the extent to which a particular objective, projection, estimate, or prediction is realized. As a result, you are cautioned not to place undue reliance on such statements. These risks and uncertainties include, but are not limited to, the following:

• political or economic events, including legislative, regulatory, monetary, judicial, or other developments that affect us, our members, our counterparties, and/or our investors in the consolidated obligations of the 11 Federal Home Loan Banks (FHLBanks);

• the ability to meet capital and other regulatory requirements;

• disruptions in the credit and debt markets and the effect on future funding costs, sources, and availability;

• the ability to develop and support internal controls, information systems, and other operating technologies that effectively manage the risks we face, including but not limited to, cyber-attacks and other business interruptions;

• risks related to the other FHLBanks that could trigger our joint and several liability for debt issued by the other FHLBanks;

• general economic and market conditions that could impact the volume of business we do with our members, including, but not limited to, the timing and volatility of market activity, inflation/deflation, employment rates, housing prices, the condition of the mortgage and housing markets on our mortgage-related assets, including the level of mortgage prepayments, and the condition of the capital markets on our consolidated obligations;

• ineffective use of hedging strategies or the availability of derivative instruments in the types and quantities needed for risk management purposes from acceptable counterparties;

• changes in the relative attractiveness of consolidated obligations due to actual or perceived changes in the FHLBanks’ credit ratings as well as the U.S. Government’s long-term credit rating;

• competitive forces, including without limitation, other sources of funding available to our borrowers that could impact the demand for our advances, other entities purchasing mortgage loans in the secondary mortgage market, and other entities borrowing funds in the capital markets;

• the volatility of credit quality, market prices, interest rates, and other indices that could affect the value of collateral held by us as security for borrower and counterparty obligations;

• reliance on a relatively small number of member institutions for a large portion of our advance business;

• the ability to attract and retain key personnel;

• significant business interruptions resulting from third party failure;

• the volatility of reported results due to changes in the fair value of certain assets, liabilities, and derivative instruments;

• member consolidations and failures;

• increases in delinquency or loss estimates on mortgage loans; and

• changes to and replacement of the London Interbank Offered Rate (LIBOR) benchmark interest rate.

50

For additional information regarding these and other risks and uncertainties that could cause our actual results to differ materially from the expectations reflected in our forward-looking statements, see “Item 1A. Risk Factors” in this quarterly report and in our 2017 Form 10-K. You are cautioned not to place undue reliance on any forward-looking statements made by us or on our behalf. Forward-looking statements apply only as of the date they are made, and we undertake no obligation to update or revise any forward-looking statement.

EXECUTIVE OVERVIEW

Our Bank is a member-owned cooperative serving shareholder members in our district. Our mission is to provide funding and liquidity for our members and housing associates so that they can meet the housing, economic development, and business needs of the communities they serve. We strive to achieve our mission within an operating principle that balances the trade-off between attractively priced products, reasonable returns on capital stock, and maintaining an adequate level of retained earnings to preserve par value of member-owned capital stock. Our members include commercial banks, savings institutions, credit unions, insurance companies, and community development financial institutions (CDFIs).

Financial Results

For the three and six months ended June 30, 2018, we reported net income of $129 million and $247 million compared to $130 million and $270 million for the same periods in 2017. Our net income for the three and six months ended June 30, 2018, calculated in accordance with accounting principles generally accepted in the United States of America (GAAP), was impacted by net interest income, other income (loss), and other expense.

Net interest income totaled $167 million and $324 million for the three and six months ended June 30, 2018 compared to $170 million and $323 million for the same periods last year. Our net interest margin was 0.44 percent and 0.43 percent during the three and six months ended June 30, 2018 compared to 0.41 percent and 0.37 percent for the same periods in 2017. The increase was primarily driven by the higher interest rate environment.

We recorded net gains of $8 million and $16 million in other income (loss) for the three and six months ended June 30, 2018 compared to net gains of $6 million and $41 million for the same periods last year. During the six months ended June 30, 2017, other income (loss) was primarily impacted by net gains on litigation settlements of $21 million as a result of settlements with certain defendants in our private-label mortgage-backed securities (private-label MBS) litigation. We did not record any net gains on private-label MBS litigation settlements during the three or six months ended June 30, 2018 or the three months ended June 30, 2017. Other factors impacting other income (loss) included net gains (losses) on derivatives and hedging activities and net gains (losses) on trading securities, as described below.

During the three and six months ended June 30, 2018, we recorded net gains of $14 million and $34 million on our derivatives and hedging activities through other income (loss) compared to net losses of $3 million and net gains of $3 million during the same periods last year. The fair value changes were primarily driven by changes in interest rates. These changes impacted our fair value hedge relationships and fair value changes on interest rate swaps used to economically hedge our investment securities portfolio.

During the three and six months ended June 30, 2018, we recorded net losses on trading securities of $8 million and $24 million compared to net gains of $4 million and $9 million for the same periods in 2017. These changes in fair value were primarily due to the impact of changes in interest rates and credit spreads on our fixed rate trading securities.

Other expense totaled $32 million and $65 million for the three and six months ended June 30, 2018 compared to $31 million and $63 million for the same periods in 2017. Other expense primarily represents compensation and benefit expenses, contractual services, and professional fees.

Our total assets increased to $151.0 billion at June 30, 2018, from $145.1 billion at December 31, 2017, driven by the increase in advances. Advances at June 30, 2018 increased by $7.4 billion from advances at December 31, 2017 due primarily to borrowings by certain large members.

Our total liabilities increased to $143.4 billion at June 30, 2018, from $138.1 billion at December 31, 2017, driven primarily by an increase in the amount of consolidated obligations needed to fund our assets.

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Total capital increased to $7.5 billion at June 30, 2018 from $7.0 billion at December 31, 2017, primarily due to an increase in activity-based capital stock resulting from an increase in advance balances. In addition, retained earnings increased due to net income, partially offset by dividends paid. Our regulatory capital ratio increased to 5.15 percent at June 30, 2018, from 5.03 percent at December 31, 2017 and was above the required regulatory limit at each period end. Regulatory capital includes all capital stock, mandatorily redeemable capital stock, and retained earnings, and the regulatory capital ratio compares this to period-end total assets.

Refer to “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Statements of Condition” for additional discussion on our financial condition.

Adjusted Earnings

As part of evaluating financial performance, we adjust GAAP net interest income and GAAP net income before assessments for the impact of (i) market adjustments relating to derivative and hedging activities and instruments held at fair value, (ii) realized gains (losses) on investment securities, and (iii) other non-routine and unpredictable items, including net asset prepayment fee income, mandatorily redeemable capital stock interest expense, and net gains on litigation settlements. The resulting non-GAAP measure, referred to as our adjusted earnings, reflects both adjusted net interest income and adjusted net income.

Because our business model is primarily one of holding assets and liabilities to maturity, management believes that the adjusted earnings measure is helpful in understanding our operating results and provides a meaningful period-to-period comparison of our long-term economic value in contrast to GAAP results, which can be impacted by fair value changes driven by market volatility on financial instruments recorded at fair value or transactions that are considered to be unpredictable or not routine. As a result, management uses the adjusted earnings measure to assess performance under our incentive compensation plans and to ensure management remains focused on our long-term value and performance. Non-GAAP financial measures have inherent limitations, are not required to be uniformly applied, and are not audited. While these non-GAAP measures can be used to assist in understanding the components of our earnings, they should not be considered a substitute for results reported under GAAP.

The adjusted net income methodology is calculated on a post Affordable Housing Program (AHP) assessment basis. Management believes AHP assessments are a fundamental component of our business and believes this assessment should be included in our adjusted net income calculation. In addition, this treatment aligns the adjusted net income results to our strategic business plan which is calculated on a post AHP assessment basis.

As indicated in the tables that follow, our adjusted net interest income and adjusted net income decreased slightly during the three and six months ended June 30, 2018 when compared to the same periods in 2017. The decline was driven by lower adjusted net interest income due primarily to lower average volumes of our interest-earning assets and interest-bearing liabilities.

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The following table summarizes the reconciliation between GAAP and adjusted net interest income (dollars in millions):

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
GAAP net interest income	$	167		$	170		$	324		$	323
Exclude:
Prepayment fees on advances, net1	1			1			6			1
Prepayment fees on investments, net2	5			—			8			—
Mandatorily redeemable capital stock interest expense	(5		)	(4		)	(9		)	(9		)
Total adjustments	1			(3		)	5			(8		)
Include items reclassified from other income (loss):
Net interest expense on economic hedges	(1		)	(3		)	(3		)	(7		)
Adjusted net interest income	$	165		$	170		$	316		$	324
Adjusted net interest margin	0.44		%	0.41		%	0.42		%	0.37		%

1 Prepayment fees on advances, net includes basis adjustment amortization.

2 Prepayment fees on investments, net includes basis adjustment amortization and premium and/or discount amortization.

The following table summarizes the reconciliation between GAAP net income before assessments and adjusted net income (dollars in millions):

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
GAAP net income before assessments	$	143		$	145		$	275		$	301
Exclude:
Prepayment fees on advances, net1	1			1			6			1
Prepayment fees on investments, net2	5			—			8			—
Mandatorily redeemable capital stock interest expense	(5		)	(4		)	(9		)	(9		)
Net gains (losses) on trading securities	(8		)	4			(24		)	9
Net gains (losses) on derivatives and hedging activities	14			(3		)	34			3
Gains on litigation settlements, net	—			—			—			21
Include:
Net interest expense on economic hedges	(1		)	(3		)	(3		)	(7		)
Adjusted net income before assessments	135			144			257			269
Adjusted AHP assessments3	13			14			25			27
Adjusted net income	$	122		$	130		$	232		$	242

1 Prepayment fees on advances, net includes basis adjustment amortization.

2 Prepayment fees on investments, net includes basis adjustment amortization and premium and/or discount amortization.

3 Adjusted AHP assessments for this non-GAAP measure are calculated as 10 percent of adjusted net income before assessments. For additional discussion on AHP assessments, refer to “Item 8. Financial Statements and Supplementary Data — Note 14 — Affordable Housing Program” in our 2017 10-K.

For additional discussion on items impacting our GAAP earnings, refer to “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Results of Operations.”

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CONDITIONS IN THE FINANCIAL MARKETS

Economy and Financial Markets

Economic and market data received since the Federal Open Market Committee (FOMC or Committee) meeting in June of 2018 indicates that the labor market has continued to strengthen and that economic activity has been rising at a solid rate. Job gains have been strong, on average, in recent months, and the unemployment rate has declined. Household spending has picked up, while business fixed investment has continued to grow strongly. On a 12-month basis, overall inflation and measures excluding food and energy prices have moved close to the FOMC’s target of two percent. Indicators of longer-term inflation expectations are little changed since the last FOMC meeting.

In its June 13, 2018 statement, the FOMC stated it continues to seek to foster maximum employment and price stability. The Committee expects that further gradual increases in the target range for the Federal funds rate will be consistent with the sustained expansion of economic activity, strong labor market conditions, and inflation near the Committee’s two percent objective over the medium term. The Committee stated that near-term risks to the economic outlook appear roughly balanced.

Mortgage Markets

The housing market remained strong throughout the second quarter of 2018, as indicated by rising home prices and lower inventories of properties for sale. The improvement in the housing market has been partly attributable to low inventories, and the seasonality impact on home sales.

Mortgage rates increased slightly during the second quarter, and were higher than rates observed in the prior year. The increase in rates has resulted in the housing market becoming increasingly driven by purchase activity versus refinance activity. The increase in mortgage rates has not slowed down the demand for home purchases during the second quarter as inventories remain limited. However, as prices increase and rates rise further, the pace of purchases may slow.

Interest Rates

The following table shows information on key market interest rates¹:

	Second Quarter 2018 3-Month Average		Second Quarter 2017 3-Month Average		Second Quarter 2018 6-Month Average		Second Quarter 2017 6-Month Average		June 30, 2018 Ending Rate		December 31, 2017 Ending Rate
Federal funds	1.74	%	0.95	%	1.59	%	0.83	%	1.91	%	1.33	%
Three-month LIBOR	2.34		1.20		2.14		1.14		2.34		1.69
2-year U.S. Treasury	2.47		1.29		2.32		1.26		2.53		1.89
10-year U.S. Treasury	2.92		2.26		2.84		2.35		2.86		2.41
30-year residential mortgage note	4.54		3.99		4.41		4.09		4.55		3.99

1 Source is Bloomberg.

In its June 2018 meeting, the FOMC decided to raise the Federal Reserve’s key target interest rate, the Federal funds rate, to a range of 1.75 to 2.00 percent compared to a range of 1.00 to 1.25 percent for the same period in 2017. The Committee’s stance on monetary policy remains accommodative, thereby supporting the strong labor market conditions and a sustained return towards an inflation rate of two percent. In determining the timing and size of future adjustments to the target range for the Federal funds rate, the FOMC stated that it will assess realized and expected economic conditions relative to its maximum employment and a two percent inflation rate. The assessment will take into account a wide range of information, including measures of labor market conditions, indicators of inflation pressures, inflation expectations, and financial and international developments.

The 10-year U.S. Treasury yields and mortgage rates were higher on average in the second quarter of 2018 when compared to the same period in prior year. Interest rates increased as the FOMC raised their target rate during 2018, and economic data remained strong.

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Funding Spreads

The following table reflects our funding spreads to LIBOR (basis points)¹:

	Second Quarter 2018 3-Month Average		Second Quarter 2017 3-Month Average		Second Quarter 2018 6-Month Average		Second Quarter 2017 6-Month Average		June 30, 2018 Ending Spread		December 31, 2017 Ending Spread
3-month	(44.9	)	(25.1	)	(39.0	)	(33.6	)	(40.6	)	(28.9	)
2-year	(16.2	)	(15.4	)	(16.0	)	(17.7	)	(15.8	)	(10.9	)
5-year	(2.0	)	3.1		(1.5	)	3.0		(3.0	)	4.1
10-year	29.4		47.7		29.5		49.6		27.4		37.9

1 Source is the Office of Finance.

As a result of our credit quality and GSE status, we generally have ready access to funding at relatively competitive interest rates. During the second quarter of 2018, our funding spreads improved relative to LIBOR when compared to spreads at December 31, 2017. Overall, spreads relative to LIBOR experienced an improvement on long-term debt year-over-year. During the first six months of 2018, we utilized fixed term and floating rate, callable, and step-up consolidated obligation bonds in addition to consolidated obligation discount notes to capture attractive funding, match the repricing structures on floating rate assets, and meet liquidity requirements.

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SELECTED FINANCIAL DATA

The following tables present selected financial data for the periods indicated (dollars in millions):

Statements of Condition	June 30, 2018		March 31, 2018		December 31, 2017		September 30, 2017		June 30, 2017
Cash and due from banks	$	201	$	194	$	503	$	218	$	964
Investments1	33,019		33,370		34,452		39,341		37,763
Advances	109,963		108,253		102,613		117,514		118,878
Mortgage loans held for portfolio, net2	7,310		7,112		7,096		7,031		6,953
Total assets	150,981		149,347		145,099		164,545		164,988
Consolidated obligations
Discount notes	43,122		33,930		36,682		52,976		66,558
Bonds	98,468		106,204		98,893		102,294		89,171
Total consolidated obligations3	141,590		140,134		135,575		155,270		155,729
Mandatorily redeemable capital stock	373		356		385		422		480
Total liabilities	143,442		141,912		138,078		157,047		157,592
Capital stock — Class B putable	5,420		5,372		5,068		5,624		5,623
Retained earnings	1,977		1,904		1,839		1,774		1,684
Accumulated other comprehensive income (loss)	142		159		114		100		89
Total capital	7,539		7,435		7,021		7,498		7,396
Regulatory capital ratio4	5.15		5.11		5.03		4.75		4.72

	For the Three Months Ended
Statements of Income	June 30, 2018			March 31, 2018			December 31, 2017			September 30, 2017			June 30, 2017
Net interest income	$	167		$	157		$	153		$	174		$	170
Provision (reversal) for credit losses on mortgage loans	—			—			(1		)	1			—
Other income (loss)5	8			8			7			4			6
Other expense6	32			33			31			30			31
AHP assessments	14			14			14			15			15
Net income	129			118			116			132			130
Selected Financial Ratios7
Net interest spread8	0.34		%	0.35		%	0.33		%	0.35		%	0.37		%
Net interest margin9	0.44			0.42			0.40			0.40			0.41
Return on average equity	6.83			6.56			6.43			6.96			7.13
Return on average capital stock	9.46			9.05			8.77			9.19			9.30
Return on average assets	0.34			0.32			0.30			0.31			0.31
Average equity to average assets	4.98			4.85			4.69			4.42			4.41
Dividend payout ratio10	43.25			44.86			43.80			32.26			34.53

1 Investments include interest-bearing deposits, securities purchased under agreements to resell, Federal funds sold, trading securities, available-for-sale (AFS) securities, and held-to-maturity (HTM) securities.

2 Includes an allowance for credit losses of $1 million at June 30, 2018 and $2 million at March 31, 2018, December 31, 2017, September 30, 2017, and June 30, 2017.

3 The total par value of outstanding consolidated obligations of the 11 FHLBanks was $1,059.9 billion, $1,019.2 billion, $1,034.2 billion, $1,028.7 billion, and $1,011.5 billion at June 30, 2018, March 31, 2018, December 31, 2017, September 30, 2017, and June 30, 2017, respectively.

4 Represents period-end regulatory capital expressed as a percentage of period-end total assets. Regulatory capital includes Class B capital stock (including mandatorily redeemable capital stock), and retained earnings.

5 Other income (loss) includes, among other things, net gains (losses) on investment securities and net gains (losses) on derivatives and hedging activities.

6 Other expense includes, among other things, compensation and benefits, professional fees, contractual services, and gains and losses on real estate owned (REO).

7 Amounts used to calculate selected financial ratios are based on numbers in actuals. Accordingly, recalculations using numbers in millions may not produce the same results.

8 Represents yield on total interest-earning assets minus cost of total interest-bearing liabilities.

9 Represents net interest income expressed as a percentage of average interest-earning assets.

10 Represents dividends declared and paid in the stated period expressed as a percentage of net income in the stated period. Amount excludes cash dividends paid on mandatorily redeemable capital stock. For financial reporting purposes, these dividends were recorded as interest expense in our Statements of Income.

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RESULTS OF OPERATIONS

Net Income

The following table presents comparative highlights of our net income for the three and six months ended June 30, 2018 and 2017 (dollars in millions). See further discussion of these items in the sections that follow.

	For the Three Months Ended									For the Six Months Ended
	June 30,									June 30,
	2018		2017		$ Change			% Change		2018		2017		$ Change			% Change
Net interest income	$	167	$	170	$	(3	)	(2	)%	$	324	$	323	$	1		—	%
Other income (loss)	8		6		2			33		16		41		(25		)	(61	)
Other expense	32		31		1			3		65		63		2			3
AHP assessments	14		15		(1		)	(7	)	28		31		(3		)	(10	)
Net income	$	129	$	130	$	(1	)	(1	)%	$	247	$	270	$	(23	)	(9	)%

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Net Interest Income

Our net interest income is impacted by changes in average interest-earning asset and interest-bearing liability balances, and the related yields and costs. The following table presents average balances and rates of major asset and liability categories (dollars in millions):    

	For the Three Months Ended June 30,
	2018						2017
	Average Balance1		Yield/Cost		Interest Income/ Expense		Average Balance1		Yield/Cost		Interest Income/ Expense
Interest-earning assets
Interest-bearing deposits	$	127	0.96	%	$	1	$	258	0.76	%	$	1
Securities purchased under agreements to resell	3,747		1.75		16		3,945		0.84		8
Federal funds sold	5,122		1.75		22		5,993		0.96		15
Mortgage-backed securities2,3	17,116		2.46		105		20,361		1.61		81
Other investments2,3,4	6,378		2.93		47		9,078		1.77		40
Advances3	110,634		2.27		626		119,283		1.28		381
Mortgage loans5	7,202		3.42		61		6,901		3.44		59
Loans to other FHLBanks	7		1.70		—		—		—		—
Total interest-earning assets	150,333		2.34		878		165,819		1.42		585
Non-interest-earning assets	1,224		—		—		1,088		—		—
Total assets	$	151,557	2.32	%	$	878	$	166,907	1.41	%	$	585
Interest-bearing liabilities
Deposits	$	927	1.38	%	$	2	$	892	0.52	%	$	1
Consolidated obligations
Discount notes	38,196		1.79		170		64,062		0.78		124
Bonds3	103,374		2.07		534		92,970		1.23		286
Other interest-bearing liabilities6	368		4.83		5		482		3.39		4
Total interest-bearing liabilities	142,865		2.00		711		158,406		1.05		415
Non-interest-bearing liabilities	1,147		—		—		1,148		—		—
Total liabilities	144,012		1.98		711		159,554		1.04		415
Capital	7,545		—		—		7,353		—		—
Total liabilities and capital	$	151,557	1.88	%	$	711	$	166,907	1.00	%	$	415
Net interest income and spread7			0.34	%	$	167			0.37	%	$	170
Net interest margin8			0.44	%					0.41	%
Average interest-earning assets to interest-bearing liabilities			105.23	%					104.68	%

1 Average balances are calculated on a daily weighted average basis and do not reflect the effect of derivative master netting arrangements with counterparties and/or clearing agents.

2 The average balance of AFS securities is reflected at amortized cost; therefore the resulting yields do not give effect to changes in fair value.

3 Average balances reflect the impact of fair value hedging adjustments and/or fair value option adjustments.

4 Other investments primarily include U.S. obligations, government-sponsored enterprise (GSE) obligations and Tennessee Valley Authority obligations, state or local housing agency obligations, taxable municipal bonds, and Private Export Funding Corporation (PEFCO) bonds.

5 Non-accrual loans are included in the average balance used to determine the average yield.

6 Other interest-bearing liabilities consists primarily of mandatorily redeemable capital stock.

7 Represents yield on total interest-earning assets minus yield on total interest-bearing liabilities.

8 Represents net interest income expressed as a percentage of average interest-earning assets.

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The following table presents average balances and rates of major asset and liability categories (dollars in millions):

	For the Six Months Ended June 30,
	2018						2017
	Average Balance1		Yield/Cost		Interest Income/ Expense		Average Balance1		Yield/Cost		Interest Income/ Expense
Interest-earning assets
Interest-bearing deposits	$	141	0.94	%	$	1	$	253	0.64	%	$	1
Securities purchased under agreements to resell	3,631		1.58		28		4,780		0.69		16
Federal funds sold	5,715		1.59		45		6,506		0.83		27
Mortgage-backed securities2,3	17,523		2.33		203		20,589		1.51		154
Other investments2,3,4	6,589		2.70		88		9,140		1.71		77
Advances3	109,255		2.08		1,128		124,554		1.16		714
Mortgage loans5	7,150		3.41		121		6,897		3.43		117
Loans to other FHLBanks	9		1.60		—		2		0.55		—
Total interest-earning assets	150,013		2.17		1,614		172,721		1.29		1,106
Non-interest-earning assets	1,197		—		—		1,092		—		—
Total assets	$	151,210	2.15	%	$	1,614	$	173,813	1.28	%	$	1,106
Interest-bearing liabilities
Deposits	$	938	1.22	%	$	5	$	932	0.38	%	$	2
Consolidated obligations
Discount notes	36,923		1.61		294		71,142		0.66		233
Bonds3	104,421		1.90		982		92,597		1.17		539
Other interest-bearing liabilities6	372		4.84		9		516		3.39		9
Total interest-bearing liabilities	142,654		1.82		1,290		165,187		0.96		783
Non-interest-bearing liabilities	1,128		—		—		1,186		—		—
Total liabilities	143,782		1.81		1,290		166,373		0.95		783
Capital	7,428		—		—		7,440		—		—
Total liabilities and capital	$	151,210	1.72	%	$	1,290	$	173,813	0.91	%	$	783
Net interest income and spread7			0.35	%	$	324			0.33	%	$	323
Net interest margin8			0.43	%					0.37	%
Average interest-earning assets to interest-bearing liabilities			105.16	%					104.56	%

1 Average balances are calculated on a daily weighted average basis and do not reflect the effect of derivative master netting arrangements with counterparties and/or clearing agents.

2 The average balance of AFS securities is reflected at amortized cost; therefore the resulting yields do not give effect to changes in fair value.

3 Average balances reflect the impact of fair value hedging adjustments and/or fair value option adjustments.

4 Other investments primarily include U.S. obligations, GSE obligations and Tennessee Valley Authority obligations, state or local housing agency obligations, taxable municipal bonds, and PEFCO bonds.

5 Non-accrual loans are included in the average balance used to determine the average yield.

6 Other interest-bearing liabilities consists primarily of mandatorily redeemable capital stock.

7 Represents yield on total interest-earning assets minus yield on total interest-bearing liabilities.

8 Represents net interest income expressed as a percentage of average interest-earning assets.

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The following table presents changes in interest income and interest expense. Changes in interest income and interest expense that are not identifiable as either volume-related or rate-related, but rather equally attributable to both volume and rate changes, are allocated to the volume and rate categories based on the proportion of the absolute value of the volume and rate changes (dollars in millions).

	Three Months Ended								Six Months Ended
	June 30, 2018 vs. June 30, 2017								June 30, 2018 vs. June 30, 2017
	Total Increase (Decrease) Due to					Total Increase (Decrease)			Total Increase (Decrease) Due to						Total Increase (Decrease)
	Volume			Rate					Volume			Rate
Interest income
Securities purchased under agreements to resell	$	—		$	8	$	8		$	(5	)	$	17		$	12
Federal funds sold	(2		)	9		7			(4		)	22			18
Mortgage-backed securities	(14		)	38		24			(25		)	74			49
Other investments	(14		)	21		7			(26		)	37			11
Advances	(29		)	274		245			(97		)	511			414
Mortgage loans	2			—		2			5			(1		)	4
Total interest income	(57		)	350		293			(152		)	660			508
Interest expense
Deposits	—			1		1			—			3			3
Consolidated obligations
Discount notes	(66		)	112		46			(153		)	214			61
Bonds	35			213		248			75			368			443
Other interest-bearing liabilities	(1		)	2		1			(3		)	3			—
Total interest expense	(32		)	328		296			(81		)	588			507
Net interest income	$	(25	)	$	22	$	(3	)	$	(71	)	$	72		$	1

NET INTEREST SPREAD

Net interest spread equals the yield on total interest-earning assets minus the cost of total interest-bearing liabilities. For the three and six months ended June 30, 2018, our net interest spread was 0.34 percent and 0.35 percent compared to 0.37 percent and 0.33 percent during the same periods in 2017. Our net interest spread during the three months ended June 30, 2018 was primarily impacted by a higher cost on total interest-bearing liabilities, partially offset by a higher yield on total interest-earning assets. Our net interest spread during the six months ended June 30, 2018 remained relatively stable when compared to the same period in 2017. The primary components of our interest income and interest expense are discussed below.

Advances

Interest income on advances increased during the three and six months ended June 30, 2018 when compared to the same periods in 2017 due primarily to the higher interest rate environment.

Investments

Interest income on investments increased during the three and six months ended June 30, 2018 when compared to the same periods in 2017 due primarily to the higher interest rate environment, partially offset by lower average investment balances.

Bonds

Interest expense on bonds increased during the three and six months ended June 30, 2018 when compared to the same periods in 2017 due primarily to the higher interest rate environment and higher issuances of term callable consolidated obligation bonds.

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Discount Notes

Interest expense on discount notes increased during the three and six months ended June 30, 2018 when compared to the same periods in 2017 primarily due to the higher interest rate environment, partially offset by a decrease in average discount note balances. While period end discount note balances increased from December 31, 2017, average discount note balances decreased primarily due to our increased use of bonds in place of discount notes to manage the difference between our asset and liability maturities and better match the change in our advance product mix.

For additional information on how we manage the difference between our asset and liability maturities, refer to “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources — Liquidity — Sources of Liquidity.”

Other Income (Loss)

The following table summarizes the components of other income (loss) (dollars in millions):

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
Net gains (losses) on trading securities	$	(8	)	$	4		$	(24	)	$	9
Net gains (losses) on derivatives and hedging activities	14			(3		)	34			3
Gains on litigation settlements, net	—			—			—			21
Other, net	2			5			6			8
Total other income (loss)	$	8		$	6		$	16		$	41

Other income (loss) can be volatile from period to period depending on the type of activity recorded. We recorded net gains of $8 million and $16 million during the three and six months ended June 30, 2018 compared to net gains of $6 million and $41 million during the same periods in 2017. Other income (loss) was impacted by net gains on litigation settlements of $21 million during the six months ended June 30, 2017 as a result of settlements with certain defendants in our private-label MBS litigation. We did not record any litigation settlements during the three or six months ended June 30, 2018 or the three months ended June 30, 2017. Other factors impacting other income (loss) included net gains (losses) on derivatives and hedging activities and net gains (losses) on trading securities as described below.

During the three and six months ended June 30, 2018, we recorded net gains of $14 million and $34 million on our derivatives and hedging activities through other income (loss) compared to net losses of $3 million and net gains of $3 million during the same periods in 2017. The fair value changes were primarily driven by changes in interest rates. These changes impacted our fair value hedge relationships and fair value changes on interest rate swaps used to economically hedge our investment securities portfolio. Accounting rules require all derivatives to be recorded at fair value and therefore we may be subject to income statement volatility. Refer to “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Results of Operations — Hedging Activities” for additional discussion on our derivatives and hedging activities, including the net impact of economic hedge relationships.

During the three and six months ended June 30, 2018, we recorded net losses on trading securities of $8 million and $24 million compared to net gains of $4 million and $9 million during the same periods in 2017. These changes in fair value were primarily due to the impact of interest rates and credit spreads on our fixed rate trading securities. Trading securities are recorded at fair value with changes in fair value reflected through other income (loss).

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Hedging Activities

We use derivatives to manage interest rate risk. Accounting rules affect the timing and recognition of income and expense on derivatives and therefore we may be subject to income statement volatility.

If a hedging activity qualifies for hedge accounting treatment (fair value hedge), we include the periodic cash flow components of the derivative related to interest income or expense in the relevant income statement caption consistent with the hedged asset or liability. We also record the amortization of fair value hedging adjustments from terminated hedges and the amortization of the financing element of our off market derivatives in interest income or expense or other income (loss). Changes in the fair value of both the derivative and the hedged item are recorded as a component of other income (loss) in “Net gains (losses) on derivatives and hedging activities.”

If a hedging activity does not qualify for hedge accounting treatment (economic hedge), we record the derivative’s components of interest income and expense, together with the effect of changes in fair value as a component of other income (loss) in “Net gains (losses) on derivatives and hedging activities”; however, there is no fair value adjustment for the corresponding asset or liability being hedged unless changes in the fair value of the asset or liability are normally marked to fair value through earnings (i.e., trading securities and fair value option instruments).

The following table categorizes the net effect of hedging activities on net income by product (dollars in millions):

	For the Three Months Ended June 30, 2018
Net Effect of Hedging Activities	Advances		Investments			Mortgage Loans			Bonds			Total
Net interest income:
Net amortization/accretion1	$	2	$	3		$	(1	)	$	(2	)	$	2
Net interest settlements	14		(8		)	—			(61		)	(55		)
Total impact to net interest income	16		(5		)	(1		)	(63		)	(53		)
Other income (loss):
Net gains (losses) on derivatives and hedging activities:
Net gains (losses) on fair value hedges	2		7			—			(2		)	7
Net gains (losses) on economic hedges	—		6			1			—			7
Price alignment amount on derivatives2	—		—			—			—			—
Total net gains (losses) on derivatives and hedging activities	2		13			1			(2		)	14
Net gains (losses) on trading securities3	—		(8		)	—			—			(8		)
Total impact to other income (loss)	2		5			1			(2		)	6
Total net effect of hedging activities4	$	18	$	—		$	—		$	(65	)	$	(47	)

1 Represents the amortization/accretion of fair value hedging adjustments on closed hedge relationships and the amortization of the financing element of off-market derivatives.

2 Includes the price alignment amount on derivatives for which variation margin is characterized as a daily settled contract.

3 Represents the net gains (losses) on those trading securities in which we have entered into a corresponding economic derivative to hedge the risk of changes in fair value. As a result, this line item may not agree to the Statements of Income.

4 The hedging activity tables do not include the interest component on the related hedged items or the gross prepayment fee income on terminated advance or investment hedge relationships.

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The following table categorizes the net effect of hedging activities on net income by product (dollars in millions):

	For the Three Months Ended June 30, 2017
Net Effect of Hedging Activities	Advances			Investments			Mortgage Loans			Bonds			Total
Net interest income:
Net amortization/accretion1	$	5		$	1		$	(1	)	$	(1	)	$	4
Net interest settlements	(25		)	(26		)	—			9			(42		)
Total impact to net interest income	(20		)	(25		)	(1		)	8			(38		)
Other income (loss):
Net gains (losses) on derivatives and hedging activities:
Net gains (losses) on fair value hedges	1			8			—			(3		)	6
Net gains (losses) on economic hedges	—			(9		)	—			—			(9		)
Total net gains (losses) on derivatives and hedging activities	1			(1		)	—			(3		)	(3		)
Net gains (losses) on trading securities2	—			5			—			—			5
Total impact to other income (loss)	1			4			—			(3		)	2
Total net effect of hedging activities3	$	(19	)	$	(21	)	$	(1	)	$	5		$	(36	)

1 Represents the amortization/accretion of fair value hedging adjustments on closed hedge relationships and the amortization of the financing element of off-market derivatives.

2 Represents the net gains (losses) on those trading securities in which we have entered into a corresponding economic derivative to hedge the risk of changes in fair value. As a result, this line item may not agree to the Statements of Income.

3 The hedging activity tables do not include the interest component on the related hedged items or the gross prepayment fee income on terminated advance or investment hedge relationships.

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The following tables categorize the net effect of hedging activities on net income by product (dollars in millions):

	For the Six Months Ended June 30, 2018
Net Effect of Hedging Activities	Advances		Investments			Mortgage Loans			Bonds			Other		Total
Net interest income:
Net amortization/accretion1	$	7	$	6		$	(1	)	$	(5	)	$	—	$	7
Net interest settlements	12		(23		)	—			(90		)	—		(101		)
Total impact to net interest income	19		(17		)	(1		)	(95		)	—		(94		)
Other income (loss):
Net gains (losses) on derivatives and hedging activities:
Gains (losses) on fair value hedges	2		4			—			1			—		7
Gains (losses) on economic hedges	—		25			1			—			—		26
Price alignment amount on derivatives2	—		—			—			—			1		1
Total net gains (losses) on derivatives and hedging activities	2		29			1			1			1		34
Net gains (losses) on trading securities3	—		(24		)	—			—			—		(24		)
Total impact to other income (loss)	2		5			1			1			1		10
Total net effect of hedging activities4	$	21	$	(12	)	$	—		$	(94	)	$	1	$	(84	)

	For the Six Months Ended June 30, 2017
Net Effect of Hedging Activities	Advances			Investments			Mortgage Loans			Bonds			Other		Total
Net interest income:
Net amortization/accretion1	$	10		$	3		$	(1	)	$	(2	)	$	—	$	10
Net interest settlements	(56		)	(56		)	—			31			—		(81		)
Total impact to net interest income	(46		)	(53		)	(1		)	29			—		(71		)
Other income (loss):
Net gains (losses) on derivatives and hedging activities:
Gains (losses) on fair value hedges	2			14			—			(6		)	—		10
Gains (losses) on economic hedges	—			(8		)	—			—			—		(8		)
Price alignment amount on derivatives2	—			—			—			—			1		1
Total net gains (losses) on derivatives and hedging activities	2			6			—			(6		)	1		3
Net gains (losses) on trading securities3	—			10			—			—			—		10
Total impact to other income (loss)	2			16			—			(6		)	1		13
Total net effect of hedging activities4	$	(44	)	$	(37	)	$	(1	)	$	23		$	1	$	(58	)

1 Represents the amortization/accretion of fair value hedging adjustments on closed hedge relationships and the amortization of the financing element of off-market derivatives.

2 Effective January 3, 2017, amount includes the price alignment amount on derivatives for which variation margin is characterized as a daily settled contract.

3 Represents the net gains (losses) on those trading securities in which we have entered into a corresponding economic derivative to hedge the risk of changes in fair value. As a result, this line item may not agree to the Statements of Income.

4 The hedging activity tables do not include the interest component on the related hedged items or the gross prepayment fee income on terminated advance or investment hedge relationships.

NET AMORTIZATION/ACCRETION

Amortization/accretion varies from period to period depending on our hedge relationship termination activities and the maturity, call, or prepayment of assets or liabilities previously in hedge relationships. In addition, amortization is impacted by the financing element of our off market derivatives.

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NET INTEREST SETTLEMENTS

Net interest settlements represent the interest component on derivatives that qualify for fair value hedge accounting. These amounts vary from period to period depending on our hedging activities and interest rates and are partially offset by the interest component on the related hedged item within net interest income. The hedging activity tables do not include the impact of the interest component on the related hedged item.

NET GAINS (LOSSES) ON FAIR VALUE HEDGES

Gains (losses) on fair value hedges are driven by hedge ineffectiveness. Hedge ineffectiveness occurs when changes in the fair value of the derivative and the related hedged item do not perfectly offset each other. The factors that affect hedge ineffectiveness include changes in the benchmark interest rate, volatility, and the divergence in the valuation curves used to value our assets, liabilities, and derivatives.

NET GAINS (LOSSES) ON ECONOMIC HEDGES

We utilize economic derivatives to manage certain risks in our Statements of Condition. Gains and losses on economic derivatives are driven primarily by changes in interest rates and volatility and include interest settlements. Interest settlements represent the interest component on economic derivatives. These amounts vary from period to period depending on our hedging activities and interest rates. The following discussion highlights key items impacting gains and losses on economic investment derivatives.

Investments

We utilize interest rate swaps to economically hedge a portion of our trading securities against changes in fair value. Gains and losses on these economic derivatives are due primarily to changes in interest rates. Gains and losses on our trading securities are also due primarily to changes in interest rates and credit spreads.

The following table summarizes gains and losses on these economic derivatives as well as the related trading securities (dollars in millions):

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
Gains (losses) on interest rate swaps economically hedging our investments	$	7		$	(6	)	$	28		$	(1	)
Interest settlements	(1		)	(3		)	(3		)	(7		)
Net gains (losses) on investment derivatives	6			(9		)	25			(8		)
Net gains (losses) on related trading securities	(8		)	5			(24		)	10
Net gains (losses) on economic investment hedge relationships	$	(2	)	$	(4	)	$	1		$	2

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STATEMENTS OF CONDITION

Financial Highlights

Our total assets increased to $151.0 billion at June 30, 2018 from $145.1 billion at December 31, 2017. Our total liabilities increased to $143.4 billion at June 30, 2018 from $138.1 billion at December 31, 2017. Total capital increased to $7.5 billion at June 30, 2018 from $7.0 billion at December 31, 2017. See further discussion of changes in our financial condition in the appropriate sections that follow.

Cash and Due from Banks

At June 30, 2018, our total cash balance was $201 million compared to $503 million at December 31, 2017. Our cash balance is influenced by our liquidity needs, member advance activity, market conditions, and the availability of attractive investment opportunities.

Advances

The following table summarizes our advances by type of institution (dollars in millions):

	June 30, 2018		December 31, 2017
Commercial banks	$	75,483	$	68,299
Savings institutions	1,079		2,323
Credit unions	4,421		4,043
Non-captive insurance companies	21,203		19,831
Captive insurance companies	7,079		7,634
Community development financial institution	3		3
Total member advances	109,268		102,133
Housing associates	49		23
Non-member borrowers	865		522
Total par value	$	110,182	$	102,678

Our total advance par value increased $7.5 billion or 7 percent at June 30, 2018 when compared to December 31, 2017. The increase in total par value was primarily due to an increase in borrowings by a large depository institution member and a non-captive insurance company member.

As a result of the final rule on membership issued by the Federal Housing Finance Agency (Finance Agency) effective February 19, 2016, the eligibility requirements for FHLBank members were changed rendering captive insurance company members ineligible for FHLBank membership. In accordance with the final rule, captive insurance company members that were admitted as members after September 12, 2014 (the date the Finance Agency proposed this rule) had their memberships terminated on February 17, 2017. Captive insurance company members that were admitted as members prior to September 12, 2014 will also have their memberships terminated no later than February 19, 2021. The magnitude of the impact of the final rule at that date will depend, in part, on our size and profitability at the time of membership termination or maturity of the related advances. As of June 30, 2018, we had six captive insurance company members with total advances outstanding of $7.1 billion, which represented 6 percent of our total advances outstanding. One captive insurance company member was included in our five largest member borrowers at June 30, 2018 within this “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Statements of Condition — Advances.”

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The following table summarizes our advances by product type (dollars in millions):

	June 30, 2018				December 31, 2017
	Amount			% of Total	Amount			% of Total
Variable rate	$	69,955		63	$	65,711		64
Fixed rate	38,523			35	35,308			34
Amortizing	1,704			2	1,659			2
Total par value	110,182			100	102,678			100
Premiums	44				53
Discounts	(10		)		(12		)
Fair value hedging adjustments	(253		)		(106		)
Total advances	$	109,963			$	102,613

Fair value hedging adjustments changed $147 million at June 30, 2018 when compared to December 31, 2017 due to the impact of interest rates on our cumulative fair value adjustments on advances in hedge relationships.

At June 30, 2018 and December 31, 2017, 36 percent and 26 percent of our advances were variable rate callable advances. Callable advances may be prepaid by borrowers on pertinent dates (call dates) and therefore provide borrowers a source of long-term financing with prepayment flexibility. Interest rates on our variable rate callable advances reset at each call date to be consistent with either the underlying LIBOR index or our current offering rate of our underlying cost of funds. In addition, we retain the flexibility to adjust the spread relative to our cost of funds for a material percentage of these variable rate advances on each reset date. We generally fund our variable rate callable advances with either discount notes, LIBOR indexed debt, or debt swapped to a LIBOR index. For additional discussion on our funding strategies, refer to “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources — Liquidity — Sources of Liquidity.”

At June 30, 2018 and December 31, 2017, advances outstanding to our five largest member borrowers totaled $65.8 billion and $60.4 billion, representing 60 and 59 percent of our total advances outstanding. The following table summarizes advances outstanding to our five largest member borrowers at June 30, 2018 (dollars in millions):

	Amount		% of Total
Wells Fargo Bank, N.A.	$	51,025	46
Transamerica Life Insurance Company1	4,085		4
ZB, National Association	3,650		3
Truman Insurance Company2	3,588		3
Principal Life Insurance Company3	3,500		3
Total par value	$	65,848	60

1 Excludes $1.4 billion of advances with Transamerica Premier Life Insurance Company, an affiliate of Transamerica Life Insurance Company.

2 Represents a captive insurance company member whose membership will terminate within five years of the Finance Agency’s final rule on membership that became effective February 19, 2016.

3 Excludes $20 million of advances with Principal Bank, an affiliate of Principal Life Insurance Company.

We manage our credit exposure to advances through an approach that provides for an established credit limit for each borrower, ongoing reviews of each borrower’s financial condition, and detailed collateral and lending policies to limit risk of loss while balancing borrowers’ needs for a reliable source of funding. In addition, we lend to our borrowers in accordance with the Federal Home Loan Bank Act of 1932 (FHLBank Act), Finance Agency regulations, and other applicable laws and regulations.

The FHLBank Act requires that we obtain sufficient collateral on advances to protect against losses. We have never experienced a credit loss on an advance to a member or eligible housing associate. Based upon our collateral and lending policies, the collateral held as security, and the repayment history on advances, management has determined that there were no probable credit losses on our advances as of June 30, 2018 and December 31, 2017. Accordingly, we have not recorded any allowance for credit losses on our advances. See additional discussion regarding our collateral requirements in “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Risk Management — Credit Risk — Advances.”

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Mortgage Loans

The following tables summarize information on our mortgage loans held for portfolio (dollars in millions):

	June 30, 2018			December 31, 2017
Fixed rate conventional loans	$	6,699		$	6,472
Fixed rate government-insured loans	516			529
Total unpaid principal balance	7,215			7,001
Premiums	99			98
Discounts	(6		)	(6		)
Basis adjustments from mortgage loan commitments	3			5
Total mortgage loans held for portfolio	7,311			7,098
Allowance for credit losses	(1		)	(2		)
Total mortgage loans held for portfolio, net	$	7,310		$	7,096

Our total mortgage loans increased at June 30, 2018 when compared to December 31, 2017 due to loan purchases exceeding principal paydowns. For additional discussion on our mortgage loan credit risk, refer to “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Risk Management — Credit Risk — Mortgage Assets.”

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Investments

The following table summarizes the carrying value of our investments (dollars in millions):

	June 30, 2018			December 31, 2017
	Amount		% of Total	Amount		% of Total
Short-term investments1
Interest-bearing deposits	$	1	—	$	1	—
Securities purchased under agreements to resell	4,900		15	4,600		13
Federal funds sold	4,435		13	4,250		12
Total short-term investments	9,336		28	8,851		25
Long-term investments2
Mortgage-backed securities
GSE single-family	3,338		10	3,740		11
GSE multifamily	9,865		30	10,983		32
U.S. obligations single-family3	4,108		12	3,741		11
U.S. obligations commercial3	2		—	2		—
Private-label residential	11		—	12		—
Total mortgage-backed securities	17,324		52	18,478		54
Non-mortgage-backed securities
U.S. obligations3	3,002		9	3,296		10
GSE and Tennessee Valley Authority obligations	1,487		5	1,889		5
State or local housing agency obligations	1,333		4	1,388		4
Other	537		2	550		2
Total non-mortgage-backed securities	6,359		20	7,123		21
Total long-term investments	23,683		72	25,601		75
Total investments	$	33,019	100	$	34,452	100

1 Short-term investments have original maturities equal to or less than one year.

2 Long-term investments have original maturities of greater than one year.

3 Represents investment securities backed by the full faith and credit of the U.S. Government.

Our investments decreased $1.4 billion or four percent at June 30, 2018 when compared to December 31, 2017 due primarily to maturities and paydowns of MBS and agency securities, partially offset by MBS purchases and an increase in money market investments needed to manage our liquidity position during the quarter.

The Finance Agency limits our investments in MBS by requiring that the total book value of our MBS not exceed three times regulatory capital at the time of purchase. Our ratio of MBS to regulatory capital was 2.22 and 2.52 at June 30, 2018 and December 31, 2017.

We evaluate AFS and HTM securities in an unrealized loss position for other-than-temporary-impairment (OTTI) on at least a quarterly basis. As part of our OTTI evaluation, we consider our intent to sell each debt security and whether it is more likely than not that we will be required to sell the security before its anticipated recovery. If either of these conditions is met, we will recognize an OTTI charge to earnings equal to the entire difference between the security’s amortized cost basis and its fair value at the reporting date. For securities in an unrealized loss position that meet neither of these conditions, we perform analyses to determine if any of these securities are other-than-temporarily impaired. At June 30, 2018 and December 31, 2017 we did not consider any of these securities to be other-than-temporarily-impaired. Refer to “Item 1. Financial Statements — Note 6 — Other-Than-Temporary Impairment” for additional information on our OTTI analysis performed at June 30, 2018.

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Consolidated Obligations

Consolidated obligations, which include bonds and discount notes, are the primary source of funds to support our advances, mortgage loans, and investments. At June 30, 2018 and December 31, 2017, the carrying value of consolidated obligations for which we are primarily liable totaled $141.6 billion and $135.6 billion.

DISCOUNT NOTES

The following table summarizes our discount notes, all of which are due within one year (dollars in millions):

	June 30, 2018			December 31, 2017
Par value	$	43,241		$	36,740
Discounts and concession fees1	(119		)	(58		)
Total	$	43,122		$	36,682

1 Concessions represent fees paid to dealers in connection with the issuance of certain consolidated obligation discount notes.

Our discount notes increased $6.4 billion or 18 percent at June 30, 2018 when compared to December 31, 2017. As a result of changes in our advance product mix and a change in our funding strategy, we increased our utilization of shorter-term discount notes at quarter end.

BONDS

The following table summarizes information on our bonds (dollars in millions):

	June 30, 2018			December 31, 2017
Total par value	$	98,930		$	99,184
Premiums	168			193
Discounts and concession fees1	(52		)	(60		)
Fair value hedging adjustments	(578		)	(424		)
Total bonds	$	98,468		$	98,893

1 Concessions represent fees paid to dealers in connection with the issuance of certain consolidated obligation bonds.

Our bonds remained relatively stable at June 30, 2018 when compared to December 31, 2017. Fair value hedging adjustments changed $154 million at June 30, 2018 when compared to December 31, 2017due to the impact of interest rates on our cumulative fair value adjustments on bonds in hedge relationships.

For additional information on our bonds, refer to "Item 7. Management's Discussion and Analysis of Financial Condition

and Results of Operations — Liquidity and Capital Resources — Liquidity — Sources of Liquidity.”

Capital

The following table summarizes information on our capital (dollars in millions):

	June 30, 2018		December 31, 2017
Capital stock	$	5,420	$	5,068
Retained earnings	1,977		1,839
Accumulated other comprehensive income (loss)	142		114
Total capital	$	7,539	$	7,021

Our capital increased at June 30, 2018 when compared to December 31, 2017. The increase was primarily due to an increase in activity-based capital stock resulting from an increase in advance balances. In addition, retained earnings increased due to net income, partially offset by dividends paid. Refer to “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources — Capital — Capital Stock” for additional information on our capital stock.

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Derivatives

We use derivatives to manage interest rate risk. The notional amount of derivatives serves as a factor in determining periodic interest payments and cash flows received and paid. However, the notional amount of derivatives represents neither the actual amounts exchanged nor our overall exposure to credit and market risk.

The following table categorizes the notional amount of our derivatives by type (dollars in millions):

	June 30, 2018		December 31, 2017
Interest rate swaps
Noncallable	$	46,434	$	51,502
Callable by counterparty	1,585		1,853
Callable by the Bank	181		172
Total interest rate swaps	48,200		53,527
Forward settlement agreements (TBAs)	167		66
Mortgage delivery commitments	172		72
Total notional amount	$	48,539	$	53,665

The notional amount of our derivative contracts declined at June 30, 2018 when compared to December 31, 2017. During the second quarter of 2018, we reduced our use of swapped consolidated obligation bonds in response to market conditions, and increased our utilization of discount notes and LIBOR indexed debt to capture attractive funding, match repricing structures on advances, and provide additional liquidity. For additional discussion regarding our use of derivatives, see “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Risk Management — Credit Risk — Derivatives.”

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LIQUIDITY AND CAPITAL RESOURCES

Our liquidity and capital positions are actively managed in an effort to preserve stable, reliable, and cost-effective sources of funds to meet current and projected future operating financial commitments, as well as regulatory, liquidity, and capital requirements.

Liquidity

SOURCES OF LIQUIDITY

We utilize several sources of liquidity to carry out our business activities. These include, but are not limited to, proceeds from the issuance of consolidated obligations, payments collected on advances and mortgage loans, proceeds from investment securities, member deposits, the issuance of capital stock, and current period earnings.

Our primary source of liquidity is proceeds from the issuance of consolidated obligations (bonds and discount notes) in the capital markets. During the six months ended June 30, 2018, proceeds from the issuance of bonds and discount notes were $21.1 billion and $91.7 billion compared to $26.8 billion and $118.1 billion for the same period in 2017. We continued to issue term fixed and floating rate, callable, and step-up rate consolidated obligation bonds as well as shorter-term discount notes to capture attractive funding, match repricing structures on advances, and provide additional liquidity.

We maintained continual access to funding and issued debt to meet the needs of our members, which generally favored the issuance of shorter-term debt. Access to debt markets has been reliable because investors, driven by increased liquidity preferences, including the effects of money market fund reform and our government affiliation, have sought the FHLBanks’ debt as an asset of choice, which has led to advantageous funding opportunities. However, due to the short-term maturity of the debt, we may be exposed to additional risks associated with refinancing and our ability to access the capital markets.

We are focused on maintaining an adequate liquidity balance and a funding balance between our financial assets and financial liabilities and work collectively with the other FHLBanks to manage the system-wide liquidity and funding needs. We monitor our debt refinancing risk and liquidity position primarily by tracking the maturities of financial assets and financial liabilities. In managing and monitoring the amounts of assets that require refunding, we consider contractual maturities of our financial assets, as well as certain assumptions regarding expected cash flows (i.e. estimated prepayments). External factors, including member borrowing needs, supply and demand in the debt markets, and other factors may affect liquidity balances and the funding balances between financial assets and financial liabilities. Refer to “Item 1. Financial Statements” for additional information regarding the contractual maturities of certain of our financial assets and liabilities.

Our ability to raise funds in the capital markets as well as our cost of borrowing may be affected by our credit ratings. As of July 31, 2018, our consolidated obligations were rated AA+/A-1+ by Standard and Poor’s and Aaa/P-1 by Moody’s and both ratings had a stable outlook. For further discussion of how credit rating changes and our ability to access the capital markets may impact us in the future, refer to “Item 1A. Risk Factors” in our 2017 Form 10-K.

Although we are primarily liable for the portion of consolidated obligations that are issued on our behalf, we are also jointly and severally liable with the other FHLBanks for the payment of principal and interest on all consolidated obligations issued by the FHLBank System. At June 30, 2018 and December 31, 2017, the total par value of outstanding consolidated obligations for which we are primarily liable was $142.2 billion and $135.9 billion. At June 30, 2018 and December 31, 2017, the total par value of outstanding consolidated obligations issued on behalf of other FHLBanks for which we are jointly and severally liable was approximately $917.7 billion and $898.3 billion.

The Office of Finance and FHLBanks have contingency plans in place that prioritize the allocation of proceeds from the issuance of consolidated obligations during periods of financial distress if consolidated obligations cannot be issued in sufficient amounts to satisfy all FHLBank demand. In the event of significant market disruptions or local disasters, our President or his designee is authorized to establish interim borrowing relationships with other FHLBanks. To provide further access to funding, the FHLBank Act also authorizes the U.S. Treasury to directly purchase new issue consolidated obligations of the GSEs, including FHLBanks, up to an aggregate principal amount of $4.0 billion. As of July 31, 2018, no purchases had been made by the U.S. Treasury under this authorization.

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USES OF LIQUIDITY

We use our available liquidity, including proceeds from the issuance of consolidated obligations, primarily to repay consolidated obligations, fund advances, and purchase investments. During the six months ended June 30, 2018, repayments of consolidated obligations totaled $106.6 billion compared to $160.1 billion for the same period in 2017. A portion of these payments were due to the call of certain bonds in an effort to better match our projected asset cash flows. During the six months ended June 30, 2017, we called bonds with a total par value of $95 million. We did not call any bonds during the six months ended June 30, 2018.

During the six months ended June 30, 2018, advance disbursements totaled $157.0 billion compared to $130.2 billion for the same period in 2017. Advance disbursements will vary from period to period depending on member needs. During the six months ended June 30, 2018, investment purchases (excluding overnight investments) totaled $48.7 billion compared to $48.6 billion for the same period in 2017. Investment purchases during each period were primarily driven by the purchase of money market investments, including secured resale agreements in an effort to manage our liquidity position.

We also use liquidity to purchase mortgage loans, redeem member deposits, pledge collateral to derivative counterparties, redeem or repurchase capital stock, pay expenses, and pay dividends.

LIQUIDITY REQUIREMENTS

Finance Agency regulations mandate three liquidity requirements. First, we are required to maintain contingent liquidity sufficient to meet our liquidity needs, which shall, at a minimum, cover five calendar days of inability to access the consolidated obligation debt markets. Second, we are required to have available at all times an amount greater than or equal to members’ current deposits invested in advances with maturities not to exceed five years, deposits in banks or trust companies, and obligations of the U.S. Treasury. Third, we are required to maintain, in the aggregate, unpledged qualifying assets in an amount at least equal to the amount of our participation in total consolidated obligations outstanding. At June 30, 2018 and December 31, 2017, we were in compliance with all three of the Finance Agency liquidity requirements.

In addition to the liquidity measures previously discussed, the Finance Agency has provided us with guidance to maintain sufficient liquidity in an amount at least equal to our anticipated cash outflows under two different scenarios. One scenario (roll-off scenario) assumes that we cannot access the capital markets to issue debt for a period of 10 to 20 days with initial guidance set at 15 days and that during that time members do not renew any maturing, prepaid, and called advances. The second scenario (renew scenario) assumes that we cannot access the capital markets to issue debt for a period of three to seven days with initial guidance set at five days and that during that time we will automatically renew maturing and called advances for all members except very large, highly-rated members. This guidance is designed to protect against temporary disruptions in the debt markets that could lead to a reduction in market liquidity and thus the inability for us to provide advances to our members. At June 30, 2018 and December 31, 2017, we were in compliance with this liquidity guidance.

Capital

CAPITAL REQUIREMENTS

We are subject to three regulatory capital requirements. First, the FHLBank Act requires that we maintain at all times permanent capital greater than or equal to the sum of our credit, market, and operations risk capital requirements, all calculated in accordance with Finance Agency regulations. Only permanent capital, defined as Class B capital stock, (including mandatorily redeemable capital stock), and retained earnings can satisfy this risk-based capital requirement. Second, the FHLBank Act requires a minimum four percent capital-to-asset ratio, which is defined as total regulatory capital divided by total assets. Total regulatory capital includes Class B capital stock (including mandatorily redeemable capital stock) and retained earnings. It does not include AOCI. Third, the FHLBank Act imposes a five percent minimum leverage ratio, which is defined as the sum of permanent capital weighted 1.5 times and nonpermanent capital weighted 1.0 times, divided by total assets. At June 30, 2018 and December 31, 2017, we did not hold any nonpermanent capital. At June 30, 2018 and December 31, 2017, we were in compliance with all three of the Finance Agency’s regulatory capital requirements. Refer to “Item 1. Financial Statements — Note 12 — Capital” for additional information.

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CAPITAL STOCK

Our capital stock has a par value of $100 per share, and all shares are issued, redeemed, and repurchased only at the stated par value. We generally issue a single class of capital stock (Class B stock) and have two subclasses of Class B capital stock: membership and activity-based. Each member must purchase and hold membership capital stock in an amount equal to 0.12 percent of its total assets as of the preceding December 31^st, subject to a cap of $10.0 million and a floor of $10,000. Each member is also required to purchase activity-based capital stock equal to 4.00 percent of its advances and mortgage loans outstanding. All Class B capital issued is subject to a five year notice of redemption period.

We reclassify capital stock subject to redemption from equity to a liability (mandatorily redeemable capital stock) when a member provides written notice of redemption, gives notice of intention to withdraw from membership, becomes ineligible for continuing membership, or attains non-member status by merger or consolidation, charter termination, or other involuntary termination from membership.

The capital stock requirements established in our Capital Plan are designed so that we remain adequately capitalized as member activity changes. Our Board of Directors may make adjustments to the capital stock requirements within ranges established in our Capital Plan.

Capital stock owned by members in excess of their investment requirement is deemed excess capital stock. Under our Capital Plan, we, at our discretion and upon 15 days’ written notice, may repurchase excess membership capital stock. We, at our discretion, may also repurchase excess activity-based capital stock to the extent that (i) the excess capital stock balance exceeds an operational threshold set forth in the Capital Plan, which is currently set at zero, or (ii) a member submits a notice to redeem all or a portion of the excess activity-based capital stock. At June 30, 2018 and December 31, 2017, our excess capital stock outstanding was less than $1 million.

The following table summarizes our regulatory capital stock by type of member (dollars in millions):

	June 30, 2018		December 31, 2017
Commercial banks	$	3,820	$	3,508
Savings institutions	100		145
Credit unions	427		393
Non-captive insurance companies	756		681
Captive insurance companies	317		341
Total GAAP capital stock	5,420		5,068
Mandatorily redeemable capital stock	373		385
Total regulatory capital stock	$	5,793	$	5,453

The increase in regulatory capital stock held at June 30, 2018 when compared to December 31, 2017 was due to an increase in GAAP capital stock as a result of an increase in activity-based capital stock driven by an increase in advance balances.

Retained Earnings

Our Enterprise Risk Management Policy (ERMP) includes a target level of retained earnings based on the amount we believe necessary to protect the redemption value of capital stock, facilitate safe and sound operations, maintain regulatory capital ratios, and support our ability to pay a relatively stable dividend. We monitor our achievement of this target and may utilize tools such as restructuring our balance sheet, generating additional income, reducing our risk exposures, increasing capital stock requirements, or reducing our dividends to achieve our targeted level of retained earnings. At June 30, 2018, we exceeded our retained earnings target.

We entered into a Joint Capital Enhancement Agreement (JCE Agreement) with all of the other FHLBanks in February 2011. The JCE Agreement, as amended, is intended to enhance the capital position of each FHLBank over time. Under the JCE Agreement, we allocate 20 percent of our quarterly net income to a restricted retained earnings account until the balance of that account equals at least one percent of our average balance of outstanding consolidated obligations for the previous quarter. The restricted retained earnings are not available to pay dividends and are presented separately in our Statements of Condition. At June 30, 2018 and December 31, 2017, our restricted retained earnings balance totaled $384 million and $335 million. One percent of our average balance of outstanding consolidated obligations for the three months ended March 31, 2018 was $1.4 billion.

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Dividends

Our current dividend philosophy is to pay a membership capital stock dividend similar to a reference rate of interest, such as average three-month LIBOR over time, and an activity-based capital stock dividend, when possible, at a level above the membership capital stock dividend. Our actual dividend is determined quarterly by our Board of Directors, based on policies, regulatory requirements, actual performance, and other considerations.

The following table summarizes dividend-related information (dollars in millions):

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
Aggregate cash dividends paid1	$	56		$	45		$	109		$	88
Effective combined annualized dividend rate paid on capital stock	4.28		%	3.10		%	4.15		%	3.08		%
Annualized dividend rate paid on membership capital stock	2.25		%	1.00		%	2.13		%	0.88		%
Annualized dividend rate paid on activity-based capital stock	4.75		%	3.50		%	4.63		%	3.50		%
Average three-month LIBOR	2.34		%	1.20		%	2.14		%	1.14		%

1 Includes aggregate cash dividends paid during the period. Amount excludes cash dividends paid on mandatorily redeemable capital stock. For financial reporting purposes, these dividends were recorded as interest expense in our Statements of Income.

2 Effective combined annualized dividend rate is paid on total capital stock, including mandatorily redeemable capital stock.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

For a discussion of our critical accounting policies and estimates, refer to our 2017 Form 10-K. There have been no material changes to our critical accounting policies and estimates during the six months ended June 30, 2018.

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LEGISLATIVE AND REGULATORY DEVELOPMENTS

Adoption of Single-Counterparty Credit Limits for Bank Holding Companies and Foreign Banking Organizations by Board of Governors of the Federal Reserve System.

On June 14, 2018, the Board of Governors of the Federal Reserve System voted to pass a final rule establishing single-counterparty credit limits applicable to bank holding companies and foreign banking organizations with total consolidated assets of $250 billion or more, including global systemically important bank holding companies (GSIBs) in the United States. These entities are considered to be covered companies under the rule. The FHLBanks are themselves exempt from the limits and reporting requirements contained in this rule. However, credit exposure to individual FHLBanks must be monitored, and reported on as required, by any entity that is a covered company under this rule.

Under the final rule, a covered company and its subsidiariesmay not have aggregate net credit exposure to an FHLBank and (in certain cases) economically interdependent entities in excess of 25 percent of the company’s tier 1 capital. Such credit exposure does not include advances from an FHLBank, but generally includes collateral pledged to an FHLBank in excess of a covered company’s outstanding advances. Also included towards a covered company’s net credit exposure is its investment in FHLBank capital stock and debt instruments, deposits with an FHLBank, FHLBank-issued letters of credit where a covered company is the named beneficiary, and other obligations to an FHLBank, including repurchase or reverse repurchase transactions net of collateral that create a credit exposure to an FHLBank. Intra-day exposures are exempt from the final rule.

With respect to the FHLBanks’ consolidated obligations held by a covered company, the company must monitor, and report on as required, its credit exposure for such obligations. It is not clear if the Federal Reserve will require consolidated obligations to be aggregated with other exposures to an FHLBank or the FHLBank System.

The final rule gives major covered companies (i.e., the GSIBs) until January 1, 2020 to comply, and all other covered companies will have until July 1, 2020 to comply.

We continue to evaluate the overall impact of the rule, but do not expect it to materially impact our operations.

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RISK MANAGEMENT

We have risk management policies, established by our Board of Directors, that monitor and control our exposure to market, liquidity, credit, operational, model, information security, compliance, and strategic risk, as well as capital adequacy. Our primary objective is to manage our assets and liabilities in ways that protect the par redemption value of our capital stock. We periodically evaluate our risk management policies in order to respond to changes in our financial position and general market conditions.

Market Risk

We define market risk as the risk that changes in market prices may adversely affect our financial condition and performance. Interest rate risk is the principal type of market risk to which we are exposed as our cash flows, and therefore earnings and equity value, can change significantly as interest rates change. Our general approach toward managing interest rate risk is to acquire and maintain a portfolio of assets, liabilities, and derivatives, which, taken together, limit our expected exposure to interest rate risk. Management regularly reviews our sensitivity to interest rate changes by monitoring our market risk measures in parallel and non-parallel interest rate changes and spread and volatility movements.

Our key risk measures are Market Value of Capital Stock (MVCS) Sensitivity and Projected Income Sensitivity.

MARKET VALUE OF CAPITAL STOCK SENSITIVITY

We define MVCS as an estimate of the market value of assets minus the market value of liabilities (excluding mandatorily redeemable capital stock) divided by the total shares of capital stock (including mandatorily redeemable capital stock) outstanding. It represents an estimation of the “liquidation value” of one share of our capital stock if all assets and liabilities were liquidated at current market prices. MVCS does not represent our long-term value, as it takes into account short-term market price fluctuations. These fluctuations are often unrelated to the long-term value of the cash flows from our assets and liabilities.

The MVCS calculation uses market prices which are computed using interest rates, spreads, and volatilities, and assumes a run-off balance sheet. The timing and variability of balance sheet cash flows are calculated by an internal model. To ensure the accuracy of the MVCS calculation, we reconcile the computed market prices of complex instruments, such as derivatives and mortgage assets, to market observed prices or dealers’ quotes.

Interest rate risk stress tests of MVCS involve instantaneous parallel and non-parallel changes in interest rates. The resulting percentage change in MVCS from the base case value is an indication of longer-term repricing risk and option risk embedded in the balance sheet.

To protect the MVCS from large interest rate swings, we manage the interest rate risk of our balance sheet by using hedging transactions, such as issuing consolidated obligation bonds, including floating rate, simple bullet, callable, or other structured features and entering into or canceling interest rate swaps, caps, floors, and swaptions.

We monitor and manage to the MVCS policy limits in an effort to ensure the stability of the Bank’s value. Our policy limits are based on declines from the base case in parallel and non-parallel interest rate change scenarios. Any policy limit breach requires a prompt action to address the measure outside of the policy limit and the breach must be reported to the Enterprise Risk Committee of the Bank and the Risk Committee of the Board of Directors. We were in compliance with the MVCS policy limits at June 30, 2018 and December 31, 2017.

Our down 200 basis point policy limit is suspended when the 10-year swap rate is below 2.50 percent and remains so for five consecutive days. At June 30, 2018, the 10-year swap rate was 2.93 percent and the associated policy limit was in effect. At December 31, 2017, the 10-year swap rate was 2.40 percent and had been below 2.50 for five consecutive days, and therefore the associated policy limit was suspended.

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The following tables show our policy limits and base case and change from base case MVCS in dollars per share and percent change respectively, based on outstanding shares of capital stock, including shares classified as mandatorily redeemable, assuming instantaneous parallel changes in interest rates at June 30, 2018 and December 31, 2017:

	Market Value of Capital Stock Assuming Parallel Changes (dollars per share)
	Down 200		Down 100		Down 50		Base Case		Up 50		Up 100		Up 200
June 30, 2018	$	134.7	$	136.5	$	136.6	$	136.2	$	135.6	$	134.7	$	132.6
December 31, 2017	$	133.7	$	136.0	$	136.4	$	135.8	$	134.7	$	133.2	$	129.9

	% Change from Base Case
	Down 200		Down 100		Down 50		Base Case		Up 50		Up 100		Up 200
June 30, 2018	(1.1	)%	0.2	%	0.3	%	—	%	(0.5	)%	(1.1	)%	(2.7	)%
December 31, 2017	(1.5	)%	0.2	%	0.4	%	—	%	(0.8	)%	(1.9	)%	(4.4	)%

	Policy Limits (declines from base case)
	Down 200		Down 100		Down 50		Base Case		Up 50		Up 100		Up 200
June 30, 2018 and December 31, 2017	(12.0	)%	(5.0	)%	(2.2	)%	—	%	(2.2	)%	(5.0	)%	(12.0	)%

The following tables show our policy limits and base case and change from base case MVCS in dollars per share and percent change respectively, based on outstanding shares of capital stock, including shares classified as mandatorily redeemable, assuming instantaneous non-parallel changes in interest rates at June 30, 2018 and December 31, 2017:

	Market Value of Capital Stock Assuming Non-Parallel Changes (dollars per share)
	Down 200		Down 100		Down 50		Base Case		Up 50		Up 100		Up 200
June 30, 2018	$	134.9	$	136.0	$	136.3	$	136.2	$	135.8	$	135.1	$	133.1
December 31, 2017	$	133.9	$	135.3	$	135.8	$	135.8	$	135.2	$	134.2	$	131.5

	% Change from Base Case
	Down 200		Down 100		Down 50		Base Case		Up 50		Up 100		Up 200
June 30, 2018	(1.0	)%	(0.2	)%	—	%	—	%	(0.3	)%	(0.8	)%	(2.3	)%
December 31, 2017	(1.4	)%	(0.3	)%	—	%	—	%	(0.4	)%	(1.2	)%	(3.2	)%

	Policy Limits (declines from base case)
	Down 200		Down 100		Down 50		Base Case		Up 50		Up 100		Up 200
June 30, 2018 and December 31, 2017	(13.0	)%	(5.5	)%	(2.5	)%	—	%	(2.5	)%	(5.5	)%	(13.0	)%

Our base case MVCS was 136.2 at June 30, 2018 when compared to 135.8 at December 31, 2017. The change was primarily attributable to the following factors:

• Increase in retained earnings: We recorded net income of $247 million during the six months ended June 30, 2018, which was primarily driven by net interest income of $324 million. Dividend payments for the six months ended June 30, 2018 totaled $109 million. The earnings in excess of dividends paid had a positive impact on the market value of our assets, thereby increasing MVCS.

• Option-adjusted spread: The spread between mortgage interest rates and LIBOR, adjusted for the mortgage prepayment option, decreased at June 30, 2018 when compared to December 31, 2017. This had a positive impact on MVCS as it increased the value of mortgage-related assets.

• Increased Shares of Capital Stock: Our capital stock balance increased at June 30, 2018 when compared to December 31, 2017 due to capital stock issued as a result of increased member activity. As we issued this capital stock at par, which is below our current MVCS value, our MVCS was negatively impacted.

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PROJECTED INCOME SENSITIVITY

We monitor the Bank’s projected 24-month income sensitivity through our review of the projected return on capital stock measure. Projected return on capital stock is computed as an annualized ratio of projected net income over a 24 month period to average projected capital stock over the same period.

We monitor and manage projected 24-month income sensitivity in an effort to limit the short-term earnings volatility of the Bank. The projected 24-month income sensitivity is based on the forward interest rates, business, and risk management assumptions.

Our primary income sensitivity policy limits specify a floor on our projected return on capital stock of no less than 50 percent of average projected 3-month LIBOR over 24 months for the up and down 100 and 200 basis point parallel interest rate change scenarios as well as for the up and down 100 basis point non-parallel interest rate changes for each shock scenario. Any policy limit breach requires a prompt action to address the measure outside of the policy limit. The breach must be reported to the Enterprise Risk Committee of the Bank and the Risk Committee of the Board of Directors. We were in compliance with the projected 24-month income sensitivity policy limits at both June 30, 2018 and December 31, 2017. For more information on our Projected Income Sensitivity, refer to “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Risk Management — Market Risk — Projected Income Sensitivity” in our 2017 10-K.

Capital Adequacy

An adequate capital position is necessary for providing safe and sound operations of the Bank. Our key capital adequacy measures are MVCS and regulatory capital in order to maintain capital levels in accordance with Finance Agency regulations. In addition, we monitor retained earnings. For a discussion of our key capital adequacy measure, MVCS, refer to “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Risk Management — Market Risk — Market Value of Capital Stock Sensitivity.”

RETAINED EARNINGS TARGET LEVEL AND REGULATORY CAPITAL REQUIREMENTS

Our ERMP includes a target level of retained earnings based on the amount we believe necessary to protect the redemption value of capital stock, facilitate safe and sound operations, maintain regulatory capital ratios, and support our ability to pay a relatively stable dividend.We are also subject to three regulatory capital requirements. For additional information on our compliance with these requirements, refer to “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources.”

Liquidity Risk

We define liquidity risk as the risk that we will be unable to meet our obligations as they come due or meet the credit needs of our members and housing associates in a timely and cost efficient manner. To manage this risk, we maintain liquidity in accordance with Finance Agency regulations. For additional information on our compliance with these requirements, refer to “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources — Liquidity — Liquidity Requirements.”

Credit Risk

We define credit risk as the potential that our borrowers or counterparties will fail to meet their obligations in accordance with agreed upon terms. Our primary credit risks arise from our ongoing lending, investing, and hedging activities. Our overall objective in managing credit risk is to operate a sound credit granting process and to maintain appropriate credit administration, measurement, and monitoring practices.

ADVANCES

We manage our credit exposure to advances through an approach that provides for an established credit limit for each borrower, ongoing reviews of each borrower’s financial condition, and detailed collateral and lending policies to limit risk of loss while balancing borrowers’ needs for a reliable source of funding. In addition, we lend to our borrowers in accordance with the FHLBank Act, Finance Agency regulations, and other applicable laws.

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We are required by regulation to obtain sufficient collateral to fully secure our advances and other credit products. Eligible collateral includes (i) fully disbursed whole first mortgages on improved residential real property or securities representing a whole interest in such mortgages, (ii) loans and securities issued, insured, or guaranteed by the U.S. Government or any agency thereof, including MBS issued or guaranteed by Fannie Mae, Freddie Mac, or Ginnie Mae and Federal Family Education Loan Program guaranteed student loans, (iii) cash deposited with us, and (iv) other real estate-related collateral acceptable to us, such as second lien mortgages, home equity lines of credit, tax-exempt municipal securities, and commercial real estate mortgages, provided such collateral has a readily ascertainable value and we can perfect a security interest in such property. Community Financial Institutions (CFIs) may also pledge collateral consisting of secured small business, small agri-business, or small farm loans. As additional security, the FHLBank Act provides that we have a lien on each borrower’s capital stock investment; however, capital stock cannot be pledged as collateral to secure credit exposures.

Borrowers may pledge collateral to us by executing a blanket pledge agreement, specifically assigning collateral, or placing physical possession of collateral with us or our custodians. We perfect our security interest in all pledged collateral by filing Uniform Commercial Code financing statements or taking possession or control of the collateral. Under the FHLBank Act, any security interest granted to us by our members, or any affiliates of our members, has priority over the claims and rights of any other party (including any receiver, conservator, trustee, or similar party having rights of a lien creditor), unless those claims and rights would be entitled to priority under otherwise applicable law and are held by actual purchasers or by parties that have perfected security interests.

Under a blanket pledge agreement, we are granted a security interest in all financial assets of the borrower to fully secure the borrower’s obligation. Other than securities and cash deposits, we do not initially take delivery of collateral pledged by blanket pledge agreement borrowers. In the event of deterioration in the financial condition of a blanket pledge agreement borrower, we have the ability to require delivery of pledged collateral sufficient to secure the borrower’s obligation. With respect to non-blanket pledge agreement borrowers that are federally insured, we generally require collateral to be specifically assigned. With respect to non-blanket pledge agreement borrowers that are not federally insured (typically insurance companies, CDFIs, and housing associates), we generally take control of collateral through the delivery of cash, securities, or loans to us or our custodians.

Although management has policies and procedures in place to manage credit risk, we may be exposed to this risk if our outstanding advance value exceeds the liquidation value of our collateral. We mitigate this risk by applying collateral discounts or haircuts to the unpaid principal balance or market value, if available, of the collateral to determine the advance equivalent value of the collateral securing each borrower’s obligation. The amount of these discounts will vary based on the type of collateral and security agreement. We determine these discounts or haircuts using data based upon historical price changes, discounted cash flow analyses, and loan level modeling.

At June 30, 2018 and December 31, 2017, borrowers pledged $327.2 billion and $319.0 billion of collateral (net of applicable discounts) to support activity with us, including advances. At June 30, 2018 and December 31, 2017, all of our advances met the requirement to be collateralized at a minimum of 100 percent, net of applicable discounts. Borrowers pledge collateral in excess of their collateral requirement mainly to demonstrate available liquidity and to borrow additional amounts in the future.

The following table shows our total exposure, including advances, as well as the collateralization percentage of outstanding exposure by borrower type (dollars in millions):

	June 30, 2018				December 31, 2017
	Sum of Total Exposure		% Collateralized		Sum of Total Exposure		% Collateralized
Commercial banks	$	84,324	292	%	$	76,589	313	%
Savings institutions	1,168		744		2,412		328
Credit unions	4,955		335		4,423		344
Non-captive insurance companies	21,242		140		19,907		136
Captive insurance companies	7,079		101		7,634		101
Community development financial institutions	3		202		3		214
Housing associates	49		135		23		289
Non-member borrowers	866		113		523		117
Total borrowers	$	119,686	259	%	$	111,514	268	%

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Based upon our collateral and lending policies, the collateral held as security, and the repayment history on credit products, management has determined that there were no probable credit losses on our credit products as of June 30, 2018 and December 31, 2017. Accordingly, we have not recorded any allowance for credit losses on our credit products.

MORTGAGE LOANS

We are exposed to credit risk through our participation in the Mortgage Partnership Finance (MPF) program and the Mortgage Purchase Program (MPP). Mortgage loan credit risk is the risk that we will not receive timely payments of principal and interest due from mortgage borrowers because of borrower defaults. Credit risk on mortgage loans is affected by a number of factors, including loan type, borrower’s credit history, and other factors such as home price fluctuations, unemployment levels, and other economic factors in the local market or nationwide.

Through our participation in the MPF program, which represents 96 percent of the Bank’s mortgage loan held for portfolio, we invest in conventional and government-insured residential mortgage loans that are acquired through or purchased from a participating financial institution (PFI). In addition, MPF Xtra, MPF Direct, and MPF Government MBS are off-balance sheet loan products that are passed through to a third-party investor and are not maintained in our Statements of Condition.

Under the MPP, we acquired single-family mortgage loans that were purchased directly from MPP PFIs. Similar to the MPF program, MPP PFIs generally originated, serviced, and credit enhanced the mortgage loans sold to us. The MPP program represents 4 percent of the Bank’s mortgage loan held for portfolio. We currently do not purchase mortgage loans under this program. All loans in this portfolio were originated prior to 2006.

The following table presents the unpaid principal balance of our mortgage loan portfolio by product type (dollars in millions):

Product Type	June 30, 2018		December 31, 2017
Conventional	$	6,699	$	6,472
Government	516		529
Total mortgage loan unpaid principal balance	$	7,215	$	7,001

We manage the credit risk on mortgage loans acquired in the MPF program and MPP by (i) adhering to our underwriting standards, (ii) using agreements to establish credit risk sharing responsibilities with our PFIs, (iii) monitoring the performance of the mortgage loan portfolio and creditworthiness of PFIs, and (iv) establishing an allowance for credit losses to reflect management’s estimate of probable credit losses inherent in the portfolio.

Government-Insured Mortgage Loans. For our government-insured mortgage loans, our loss protection consists of the loan guarantee, the ability of the loan servicer to repurchase any government-insured loan once it reaches 90 days delinquent, and the contractual obligation of the loan servicer to liquidate a government-insured loan in full upon sale of the REO property if not repurchased previously. Therefore, we have not recorded any allowance for credit losses on government-insured mortgage loans.

Conventional Mortgage Loans. For our conventional mortgage loans, we have several layers of legal loss protection that are defined in agreements among us and our PFIs. These loss layers may vary depending on the product alternatives selected and credit profile of the loans. Loss layers may consist of (i) homeowner equity, (ii) primary mortgage insurance (PMI), (iii) a first loss account (FLA), if applicable, and (iv) a credit enhancement obligation of the PFI, if applicable. For a detailed discussion of these loss layers, refer to “Item 1. Financial Statements — Note 9 — Allowance for Credit Losses.”

Allowance for Credit Losses. We utilize an allowance for credit losses to reserve for estimated losses in our conventional MPF and MPP mortgage loan portfolios at the balance sheet date. The measurement of our MPF and MPP allowance for credit losses is determined by (i) reviewing similar conventional mortgage loans for impairment on a collective basis, (ii) reviewing conventional mortgage loans for impairment on an individual basis, and (iii) estimating additional credit losses in the conventional mortgage loan portfolio. The allowance for credit losses on our conventional mortgage loans was $1 million and $2 million at June 30, 2018 and December 31, 2017.

Refer to “Item 1. Financial Statements — Note 9 — Allowance for Credit Losses” for additional information on our allowance for credit losses.

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Non-Accrual Loans and Delinquencies. We place a conventional mortgage loan on non-accrual status if it is determined that either the collection of interest or principal is doubtful or interest or principal is 90 days or more past due. We do not place a government-insured mortgage loan on non-accrual status due to the U.S. Government guarantee of the loan and contractual obligation of the loan servicer to repurchase the loan when certain criteria are met. Refer to “Item 1. Financial Statements — Note 9 — Allowance for Credit Losses” for a summary of our non-accrual loans and mortgage loan delinquencies.

INVESTMENTS

We maintain an investment portfolio primarily to provide investment income and liquidity. Our primary credit risk on investments is the counterparties’ ability to meet repayment terms. We mitigate this credit risk by purchasing investment quality securities. We define investment quality as a security with adequate financial backings so that full and timely payment of principal and interest on such security is expected and there is minimal risk that the timely payment of principal and interest would not occur because of adverse changes in economic and financial conditions during the projected life of the security. We consider a variety of credit quality factors when analyzing potential investments, including collateral performance, marketability, asset class or sector considerations, local and regional economic conditions, nationally recognized statistical rating organization (NRSRO) credit ratings, and/or the financial health of the underlying issuer.

Finance Agency regulations limit the type of investments we may purchase. We are prohibited from investing in financial instruments issued by non-U.S. entities other than those issued by U.S. branches and agency offices of foreign commercial banks, unless otherwise approved by the Finance Agency. Our unsecured credit exposures to U.S. branches and agency offices of foreign commercial banks include the risk that, as a result of political or economic conditions in a country, the counterparty may be unable to meet their contractual repayment obligations. Our unsecured credit exposures to domestic counterparties and U.S. subsidiaries of foreign commercial banks include the risk that these counterparties have extended credit to foreign counterparties. At June 30, 2018, we were in compliance with the above regulation and did not own any financial instruments issued by non-U.S. entities, other than those issued by U.S. branches and agency offices of foreign commercial banks, and those approved by the Finance Agency.

Finance Agency regulations also include limits on the amount of unsecured credit we may extend to a counterparty or to a group of affiliated counterparties. This limit is based on a percentage of eligible regulatory capital and the counterparty’s overall credit rating. Under these regulations, the level of eligible regulatory capital is determined as the lesser of our total regulatory capital or the eligible amount of regulatory capital of the counterparty. The eligible amount of regulatory capital is then multiplied by a stated percentage. The percentage that we may offer for term extensions of unsecured credit ranges from three to 15 percent based on the counterparty’s credit rating. Our total overnight unsecured exposure to a counterparty may not exceed twice the regulatory limit for term exposures, or a total of six to 30 percent of the eligible amount of regulatory capital, based on the counterparty’s credit rating. At June 30, 2018, we were in compliance with the regulatory limits established for unsecured credit.

Our short-term portfolio may include, but is not limited to, interest-bearing deposits, Federal funds sold, securities purchased under agreements to resell, certificates of deposit, commercial paper, and U.S. Treasury bill obligations. Our long-term portfolio may include, but is not limited to, U.S. obligations, GSE and Tennessee Valley Authority obligations, state or local housing agency obligations, taxable municipal bonds, and MBS. We face credit risk from unsecured exposures primarily within our short-term portfolio. We consider investments issued or guaranteed by the U.S. Government, an agency or instrumentality of the U.S. Government, or the FDIC to be of the highest credit quality and therefore those exposures are not monitored with other unsecured investments.

We generally limit unsecured credit exposure to the following overnight investment types:

• Federal funds sold. Unsecured loans of reserve balances at the Federal Reserve Banks between financial institutions.

• Commercial paper. Unsecured debt issued by corporations, typically for the financing of accounts receivable, inventories, and meeting short-term liabilities.

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At June 30, 2018, our unsecured investment exposure consisted of overnight Federal funds sold. The following table presents our unsecured investment exposure by counterparty credit rating and domicile at June 30, 2018 (excluding accrued interest receivable) (dollars in millions):

	Credit Rating1,2
Domicile of Counterparty	AA		A		Total
Domestic	$	—	$	75	$	75
U.S subsidiaries of foreign commercial banks	—		150		150
Total domestic and U.S. subsidiaries of foreign commercial banks	—		225		225
U.S. branches and agency offices of foreign commercial banks
Australia	600		—		600
Canada	—		1,200		1,200
France	—		100		100
Germany	—		600		600
Netherlands	—		510		510
Norway	—		600		600
Sweden	600		—		600
Total U.S. branches and agency offices of foreign commercial banks	1,200		3,010		4,210
Total unsecured investment exposure	$	1,200	$	3,235	$	4,435

1 Represents the lowest credit rating available for each investment based on an NRSRO. In instances where an NRSRO rating is not available for the investment, the issuer rating is applied.

2 Table excludes investments issued or guaranteed by the U.S. Government, an agency or instrumentality of the U.S. Government, or the FDIC.

Investment Ratings

The following table summarizes the carrying value of our investments by credit rating (dollars in millions):

	June 30, 2018
	Credit Rating1
	AAA		AA		A		BBB		BB or Lower		Total
Interest-bearing deposits	$	—	$	1	$	—	$	—	$	—	$	1
Securities purchased under agreements to resell	800		—		1,000		3,100		—		4,900
Federal funds sold	—		1,200		3,235		—		—		4,435
Investment securities:
Mortgage-backed securities
GSE single-family	—		3,338		—		—		—		3,338
GSE multifamily	—		9,865		—		—		—		9,865
U.S. obligations single-family2	—		4,108		—		—		—		4,108
U.S. obligations commercial2	—		2		—		—		—		2
Private-label residential	—		4		—		6		1		11
Total mortgage-backed securities	—		17,317		—		6		1		17,324
Non-mortgage-backed securities
U.S. obligations2	—		3,002		—		—		—		3,002
GSE and Tennessee Valley Authority obligations	—		1,487		—		—		—		1,487
State or local housing agency obligations	1,082		251		—		—		—		1,333
Other	439		98		—		—		—		537
Total non-mortgage-backed securities	1,521		4,838		—		—		—		6,359
Total investments3	$	2,321	$	23,356	$	4,235	$	3,106	$	1	$	33,019

1 Represents the lowest credit rating available for each investment based on an NRSRO. In instances where an NRSRO rating is not available for the investment, the issuer rating is applied.

2 Represents investment securities backed by the full faith and credit of the U.S. Government.

3 At June 30, 2018, 13% percent of our total investments were unsecured.

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The following table summarizes the carrying value of our investments by credit rating (dollars in millions):

	December 31, 2017
	Credit Rating1
	AAA		AA		A		BBB		BB		Total
Interest-bearing deposits	$	—	$	1	$	—	$	—	$	—	$	1
Securities purchased under agreements to resell	1,600		—		500		2,500		—		4,600
Federal funds sold	—		600		2,530		1,120		—		4,250
Investment securities:
Mortgage-backed securities
GSE single-family	—		3,740		—		—		—		3,740
GSE multifamily	—		10,983		—		—		—		10,983
U.S. obligations single-family2	—		3,741		—		—		—		3,741
U.S. obligations commercial2	—		2		—		—		—		2
Private-label residential	—		4		—		7		1		12
Total mortgage-backed securities	—		18,470		—		7		1		18,478
Non-mortgage-backed securities
U.S. obligations2	—		3,296		—		—		—		3,296
GSE and Tennessee Valley Authority obligations	—		1,889		—		—		—		1,889
State or local housing agency obligations	1,122		266		—		—		—		1,388
Other	451		99		—		—		—		550
Total non-mortgage-backed securities	1,573		5,550		—		—		—		7,123
Total investments3	$	3,173	$	24,621	$	3,030	$	3,627	$	1	$	34,452

1 Represents the lowest credit rating available for each investment based on an NRSRO. In instances where an NRSRO rating is not available for the investment, the issuer rating is applied.

2 Represents investment securities backed by the full faith and credit of the U.S. Government.

3 At December 31, 2017, 12 percent of our total investments were unsecured.

Our total investments decreased $1.4 billion or four percent at June 30, 2018 when compared to December 31, 2017 due primarily to maturities and paydowns of MBS and agency securities, partially offset by MBS purchases and an increase in money market investments needed to manage our liquidity position during the quarter.

At June 30, 2018 and December 31, 2017, we did not consider any of our investments to be other-than-temporarily impaired. For more information on our evaluation of OTTI, refer to “Item 1. Financial Statements — Note 6 — Other-Than-Temporary Impairment.”

Mortgage-Backed Securities

We limit our investments in MBS to those guaranteed by the U.S. Government or issued by a GSE. Further, our ERMP prohibits new purchases of private-label MBS. We perform ongoing analysis on these investments to determine potential credit issues. At June 30, 2018 and December 31, 2017, we owned $17.3 billion and $18.5 billion of MBS, of which approximately 99.9 percent were guaranteed by the U.S. Government or issued by GSEs and 0.1 percent were private-label MBS at each period end.

We are exposed to mortgage asset credit risk through our investments in MBS. Mortgage asset credit risk is the risk that we will not receive timely payments of principal and interest due from mortgage borrowers because of borrower defaults. Credit risk on mortgage assets is affected by a number of factors, including the strength and ability to guarantee the payments from the agency that created the structure, underlying loan performance, and other economic factors in the local market or nationwide.

DERIVATIVES

We execute most of our derivative transactions with large banks and major broker-dealers. Over-the-counter derivative transactions may be either executed directly with a counterparty (uncleared derivatives) or cleared through a Futures Commission Merchant (i.e., clearing agent), with a Derivative Clearing Organization (cleared derivatives).

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We are subject to credit risk due to the risk of nonperformance by counterparties to our derivative agreements. The amount of credit risk on derivatives depends on the extent to which netting procedures and collateral requirements are used and are effective in mitigating the risk. We manage credit risk through credit analyses, collateral requirements, and adherence to the requirements set forth in our policies and Finance Agency regulations.

Uncleared Derivatives. Due to risk of nonperformance by the counterparties to our derivative agreements, we generally require collateral on uncleared derivative agreements. The amount of net unsecured credit exposure that is permissible with respect to each counterparty depends on the credit rating of that counterparty or a contractually established threshold level. A counterparty generally must deliver collateral to us if the total market value of our exposure to that counterparty rises above a specific trigger point. As a result of these risk mitigation initiatives, we do not anticipate any credit losses on our uncleared derivative agreements.

Cleared Derivatives. For cleared derivatives, the Derivative Clearing Organization (Clearinghouse) is our counterparty. We are subject to risk of nonperformance by the Clearinghouse and clearing agent. The requirement that we post initial and variation margin through the clearing agent, to the Clearinghouse, exposes us to institutional credit risk in the event that the clearing agent or the Clearinghouse fails to meet its obligations. However, the use of cleared derivatives is intended to mitigate credit risk exposure because a central counterparty is substituted for individual counterparties and collateral/payments is posted daily, through a clearing agent, for changes in the fair value of cleared derivatives. We do not anticipate any credit losses on our cleared derivatives.

The contractual or notional amount of derivatives reflects our involvement in the various classes of financial instruments. Our maximum credit risk is the estimated cost of replacing derivatives if there is a default, minus the value of any related collateral. In determining maximum credit risk, we consider accrued interest receivables and payables as well as our ability to net settle positive and negative positions with the same counterparty and/or clearing agent when netting requirements are met.

The following table shows our derivative counterparty credit exposure (dollars in millions):

	June 30, 2018
Credit Rating1	Notional Amount		Net Derivatives Fair Value Before Collateral			Cash Collateral Pledged To (From) Counterparty			Net Credit Exposure  to Counterparties
Non-member counterparties:
Asset positions with credit exposure
Uncleared derivatives
A	$	2,491	$	22		$	(21	)	$	1
BBB2	16		—			—			—
Liability positions with credit exposure
Uncleared derivatives
AA2	154		(14		)	14			—
A2	871		(3		)	3			—
BBB	435		(13		)	14			1
Cleared derivatives3	39,917		(5		)	86			81
Total derivative positions with credit exposure to non-member counterparties	43,884		(13		)	96			83
Member institutions2,4	21		—			—			—
Total	43,905		$	(13	)	$	96		$	83
Derivative positions without credit exposure	4,634
Total notional	$	48,539

1 Represents the lowest credit rating available for each counterparty based on an NRSRO.

2 Net credit exposure is less than $1 million.

3 Represents derivative transactions cleared with CME Clearing, our clearinghouse, who is not rated. CME Clearing's parent, CME Group Inc. was rated Aa3 by Moody's and AA- by Standard and Poor's at June 30, 2018.

4 Represents mortgage delivery commitments with our member institutions.

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The following table shows our derivative counterparty credit exposure (dollars in millions):

	December 31, 2017
Credit Rating2	Notional Amount		Net Derivatives Fair Value Before Collateral1			Cash Collateral Pledged To (From) Counterparty1		Net Credit Exposure to Counterparties
Non-member counterparties:
Asset positions with credit exposure
Uncleared derivatives
A3	$	5	$	—		$	—	$	—
Liability positions with credit exposure
Uncleared derivatives
A3	144		(2		)	2		—
BBB	194		(17		)	18		1
Cleared derivatives4	43,899		(9		)	108		99
Total derivative positions with credit exposure to non-member counterparties	44,242		(28		)	128		100
Member institutions3,5	18		—			—		—
Total	44,260		$	(28	)	$	128	$	100
Derivative positions without credit exposure	9,405
Total notional	$	53,665

1 To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017 and included in net derivatives fair value before collateral. Previously, this amount was included in cash collateral pledged to (from) counterparty.

2 Represents the lowest credit rating available for each counterparty based on an NRSRO.

3 Net credit exposure is less than $1 million.

4 Represents derivative transactions cleared with CME Clearing, our clearinghouse, who is not rated. CME Clearing’s parent, CME Group Inc. was rated Aa3 by Moody’s and AA- by Standard and Poor’s at December 31, 2017.

5 Represents mortgage delivery commitments with our member institutions.

Operational Risk

We define operational risk as the risk arising from inadequate or failed processes, people, and/or systems, including those emanating from external sources. All of our activities and processes generate operational risk, including legal risk. Operational risk is inherent in all of our business activities, processes, and systems. Management has established policies and procedures to reduce the likelihood of operational risk and designed our annual risk assessment process to provide ongoing identification, measurement, and monitoring of operational risk. Due to the manual nature of many of our processes, our operational risk exposure had been designated as elevated. To mitigate this risk, we focused on training, process improvements, control enhancements, system upgrades, and added staff to lead and support critical business functions. As a result, our operational risk exposure has improved.

As a result of the storm drain pipe break and water damage to our then headquarters on June 22, 2017, we leased additional space for our temporary headquarters during the third quarter of 2017. We expect to remain at this location until our new headquarters located at 909 Locust St., Des Moines, Iowa is ready for occupancy, which is currently anticipated for late 2018. As a result of the storm drain pipe and transitioning employees to a temporary headquarters location, our operational risk profile was elevated. No known material disruptions in member services or material impacts to our financial condition and results of operations have been experienced due to these events, and we have operated successfully at our temporary location for one year. For additional information on our temporary relocation, see “Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies” in our 2017 Form 10-K.

Model Risk

We define model risk as the risk of adverse consequences from decisions based on incorrect and misused model outputs. Throughout the course of our day-to-day activities, we utilize external and internal pricing and financial models as important inputs into business and risk management decision-making processes.

86

Information Security Risk

We define information security risk as the risk arising from unauthorized access, use, disclosure, disruption, modification, or destruction of information or information systems. Importantly, this definition includes the security of both digital and non-digital information as well as associated information systems and processes.

Information security risk includes the risk that cyber incidents could result in a failure or interruption of our business operations. We have not experienced any such disruption with a material adverse impact. However, we do rely heavily on internal and third-party information systems and other technology to conduct and manage our business and any disruptions to those items could have a material adverse impact on our financial condition and results of operations. We mitigate cybersecurity risk utilizing the concept of defense in depth, where multiple layers of security controls are implemented. Administrative, physical, and logical controls are in place for identifying, monitoring, and controlling system access, sensitive data, and system changes. In addition, we employ thorough security testing and training that includes regular third party facilitated penetration testing, as well as mandatory staff training on cyber risks. Given the importance of cybersecurity and ever-increasing sophistication of potential cyber-attacks, including the Spectre and Meltdown vulnerabilities discovered this past year that are inherent in almost all equipment in use today, we expect to continue to strengthen our cyber-defenses.

Compliance Risk

We define compliance risk as the risk of violations of laws, rules, regulations, regulatory and supervisory guidance, and internal policies and procedures. Our Legal and Compliance departments are responsible for coordinating with our various business units in connection with its identification, evaluation, and mitigation of our compliance risks.

Strategic Risk

We define strategic risk as the risk arising from adverse business decisions, poor implementation of business decisions, or a lack of responsiveness to changes in the industry and operating environment. We consider member concentration, legislative, and reputational risks to be components of strategic risk. From time to time, proposals are made, or legislative and regulatory changes are considered, which could affect our cost of doing business or other aspects of our business. Strategic risk can also arise from poor execution of business decisions, or a lack of responsiveness to changes in the industry and operating environment. We mitigate strategic risk through strategic business planning and monitoring of our external and internal environment. For additional information on some of the more important risks we face, refer to “Item 1A. Risk Factors” in our 2017 Form 10-K.

87

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

See “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Risk Management — Market Risk” and the sections referenced therein for quantitative and qualitative disclosures about market risk.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Management is responsible for establishing and maintaining disclosure controls and procedures designed to ensure that information required to be disclosed in reports we file or submit under the Securities Exchange Act of 1934, as amended (the Exchange Act) is (i) recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms; and (ii) accumulated and communicated to our management, including our President and chief executive officer (CEO), and chief financial officer (CFO), as appropriate, to allow timely decisions regarding required disclosure.

Management, with the participation of our President and CEO, and CFO, has evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the quarterly period covered by this report. Based on that evaluation, our President and CEO, and CFO have concluded that our disclosure controls and procedures were effective as of June 30, 2018.

Changes in Internal Control over Financial Reporting

During the quarter ended June 30, 2018, there were no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

As a result of the Merger, the Bank has been involved in certain legal proceedings initiated by the Seattle Bank against various entities relating to its purchases and subsequent impairments of certain private-label MBS, as described below. The private-label MBS litigation is described below. After consultation with legal counsel, other than the private-label MBS litigation, we do not believe any legal proceedings to which we are a party could have a material impact on our financial condition, results of operations, or cash flows.

Private-Label MBS Litigation

As the Seattle Bank previously reported, in December of 2009, it filed 11 complaints in the Superior Court of Washington for King County relating to private-label MBS that it purchased from various dealers and financial institutions in an aggregate original principal amount of approximately $4 billion. The Seattle Bank’s complaints under Washington State law requested rescission of its purchases of the securities and repurchases of the securities by the defendants for the original purchase prices plus eight percent per annum (plus related costs), minus distributions on the securities received by the Seattle Bank. The Seattle Bank asserted that the defendants made untrue statements and omitted important information in connection with their sales of the securities to the Seattle Bank.

Of the 11 cases initially filed, one has been dismissed, two have been settled in part and dismissed in part, and eight have been settled. We appealed the one complete dismissal and two partial dismissals covering the claims related to five certificates across three different cases. The appellate court affirmed the dismissal of the claims related to four certificates in December 2017 and affirmed the dismissal of the remaining certificate in May 2018. In January 2018, we filed petitions for discretionary review of the appellate court’s rulings in December related to four of the certificates with the Washington Supreme Court. On May 3, 2018, the Court granted those petitions. The aggregate consideration paid for these four certificates is $567 million. Oral arguments have been scheduled for October 9, 2018. In June 2018, we filed a petition for discretionary review of the appellate court’s ruling in May on the fifth certificate. The aggregate consideration paid for that one certificate is $200 million. The Washington Supreme Court has not yet acted on that petition.

Litigation Settlement Gains

Litigation settlement gains are considered realized and recorded when we receive cash or assets that are readily convertible to known amounts of cash or claims to cash. In addition, litigation settlement gains are considered realizable and recorded when we enter into a signed agreement that is not subject to appeal, where the counterparty has the ability to pay, and the amount to be received can be reasonably estimated. Prior to being realized or realizable, we consider potential litigation settlement gains to be gain contingencies, and therefore they are not recorded in the Statements of Income.

We record legal expenses related to litigation settlements as incurred in other expenses in the Statements of Income with the exception of certain legal expenses related to litigation settlement awards that are contingent based fees for the attorneys representing the Bank. We incur and recognize these contingent based legal fees only when litigation settlement awards are realized, at which time these fees are netted against the gains recognized on the litigation settlement. 

During the three and six months ended June 30, 2018 and the three months ended June 30, 2017, we did not record any net gains on private-label MBS litigation settlements. During the six months ended June 30, 2017, we settled a private-label MBS claim and recognized $21 million in net gains on private-label MBS litigation settlements.

89

ITEM 1A. RISK FACTORS

For a discussion of our risk factors, refer to our 2017 Form 10-K. There have been no material changes to our risk factors during the six months ended June 30, 2018.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Not applicable.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

There were no material changes to the disclosure related to the Rule 2-01 (c)(1)(ii)(A) of SEC Regulation S-X (the Loan Rule) included in our 2017 10-K. Refer to “Part II. Item 9B - Other Information“ in our 2017 Form 10-K for additional information.

90

ITEM 6. EXHIBITS

3.1	Organization Certificate of the Federal Home Loan Bank of Des Moines, as amended and restated effective May 31, 20151
3.2	Bylaws of the Federal Home Loan Bank of Des Moines, as amended and restated effective February 10, 20162
4.1	Federal Home Loan Bank of Des Moines Capital Plan, as amended and approved by the Federal Housing Finance Agency on May 31, 20151
31.1	Certification of the President and Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of the Executive Vice President and Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification of the President and Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	Certification of the Executive Vice President and Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

1 Incorporated by reference to our Form 8-K filed with the SEC on June 1, 2015 (Commission File No. 000-51999).

2 Incorporated by reference to our Form 8-K filed with the SEC on February 17, 2016 (Commission File No. 000-51999).

91

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

FEDERAL HOME LOAN BANK OF DES MOINES
(Registrant)
Date:	August 10, 2018
By:	/s/ Michael L. Wilson
	Michael L. Wilson President and Chief Executive Officer
By:	/s/ Donna S. Stone
	Donna S. Stone Senior Vice President and Chief Accounting Officer (Principal Accounting Officer)

92

EX-31.1

EXHIBIT 31.1

Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

for the President and Chief Executive Officer

I, Michael L. Wilson, certify that:

1	I have reviewed this quarterly report on Form 10-Q of the Federal Home Loan Bank of Des Moines;
2	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4	The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrants most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5 The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: August 10, 2018	/s/ Michael L. Wilson
	Michael L. Wilson
	President and Chief Executive Officer

A signed original of this written statement required by Section 302 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.

EX-31.2

EXHIBIT 31.2

Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

for the Executive Vice President and Chief Financial Officer

I, Joseph E. Amato, certify that:

1 I have reviewed this quarterly report on Form 10-Q of the Federal Home Loan Bank of Des Moines;

2 Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3 Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4 The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5 The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 10, 2018	/s/ Joseph E. Amato
	Joseph E. Amato
	Executive Vice President and Chief Financial Officer

A signed original of this written statement required by Section 302 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.1

EXHIBIT 32.1

Certification by the President and Chief Executive Officer

Pursuant to 18 U.S.C. Section 1350,

as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

I, Michael L. Wilson, President and Chief Executive Officer of the Federal Home Loan Bank of Des Moines (“Registrant”) certify that, to the best of my knowledge:

1 The Registrant's Quarterly Report on Form 10-Q for the period ended June 30, 2018 (“Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2 The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: August 10, 2018	/s/ Michael L. Wilson
	Michael L. Wilson
	President and Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

EXHIBIT 32.2

Certification by the Executive Vice President and Chief Financial Officer

Pursuant to 18 U.S.C. Section 1350,

as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

I, Joseph E. Amato, Executive Vice President and Chief Financial Officer of the Federal Home Loan Bank of Des Moines (“Registrant”) certify that, to the best of my knowledge:

1 The Registrant's Quarterly Report on Form 10-Q for the period ended June 30, 2018 (“Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2 The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: August 10, 2018	/s/ Joseph E. Amato
	Joseph E. Amato
	Executive Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 31, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	Federal Home Loan Bank of Des Moines
Entity Central Index Key	0001325814
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		56,603,795

XML

Statements of Condition - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 201	$ 503
Interest-bearing deposits	1	1
Securities purchased under agreements to resell	4,900	4,600
Federal funds sold	4,435	4,250
Investment securities
Trading securities (Note 3)	937	1,177
Available-for-sale securities (Note 4)	19,451	20,796
Held-to-maturity securities (fair value of $3,325 and $3,686) (Note 5)	3,295	3,628
Total investment securities	23,683	25,601
Advances (includes $15 and $0 at fair value under the fair value option) (Note 7)	109,963	102,613
Mortgage loans held for portfolio, net
Mortgage loans held for portfolio, net of allowance for credit losses of $1 and $2 (Notes 8 and 9)	7,310	7,096
Accrued interest receivable	305	223
Derivative assets, net (Note 10)	83	100
Other assets	100	112
TOTAL ASSETS	150,981	145,099
Deposits
Interest-bearing	914	1,013
Non-interest-bearing	114	94
Total deposits	1,028	1,107
Consolidated obligations (Note 11)
Discount notes	43,122	36,682
Bonds	98,468	98,893
Total consolidated obligations	141,590	135,575
Loans from Other Federal Home Loan Banks	0	600
Mandatorily redeemable capital stock (Note 12)	373	385
Accrued interest payable	238	210
Affordable Housing Program payable	155	142
Derivative liabilities, net (Note 10)	2	6
Other liabilities	56	53
TOTAL LIABILITIES	143,442	138,078
Commitments and contingencies (Note 14)
CAPITAL (Note 12)
Capital stock - Class B putable ($100 par value); 54 and 51 issued and outstanding shares	5,420	5,068
Retained earnings
Unrestricted	1,593	1,504
Restricted	384	335
Total retained earnings	1,977	1,839
Accumulated other comprehensive income (loss)	142	114
TOTAL CAPITAL	7,539	7,021
TOTAL LIABILITIES AND CAPITAL	$ 150,981	$ 145,099

XML

Statements of Condition (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Held-to-Maturity Securities, Fair Value	$ 3,325	$ 3,686
Advances, Fair Value Disclosure	15	0
Loans and Leases Receivable, Allowance	$ 1	$ 2
Capital Stock - Class B Putable, Par Value	$ 100	$ 100
Common Class B [Member]
Capital Stock - Class B Putable, Par Value	$ 100	$ 100
Capital Stock - Class B Putable, Issued Shares	54	51
Capital Stock - Class B Putable, Outstanding Shares	54	51

XML

Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
INTEREST INCOME
Advances	$ 626	$ 381	$ 1,128	$ 714
Interest-bearing deposits	1	1	1	1
Securities purchased under agreements to resell	16	8	28	16
Federal funds sold	22	15	45	27
Trading securities	8	12	16	23
Available-for-sale securities	122	89	232	168
Held-to-maturity securities	22	20	43	40
Mortgage loans held for portfolio	61	59	121	117
Total interest income	878	585	1,614	1,106
INTEREST EXPENSE
Consolidated obligations - Discount notes	170	124	294	233
Consolidated obligations - Bonds	534	286	982	539
Deposits	2	1	5	2
Mandatorily redeemable capital stock	5	4	9	9
Total interest expense	711	415	1,290	783
NET INTEREST INCOME	167	170	324	323
OTHER INCOME (LOSS)
Trading Securities, Change in Unrealized Holding Gain (Loss)	(8)	4	(24)	9
Net gains (losses) on derivatives and hedging activities	14	(3)	34	3
Gains on litigation settlements, net	0	0	0	21
Other, net	2	5	6	8
Total other income (loss)	8	6	16	41
OTHER EXPENSE
Compensation and benefits	14	14	31	27
Contractual services	3	3	6	6
Professional fees	4	5	7	10
Other operating expenses	6	5	11	10
Federal Housing Finance Agency	3	2	5	5
Office of Finance	1	2	3	4
Other, net	1	0	2	1
Total other expense	32	31	65	63
NET INCOME BEFORE ASSESSMENTS	143	145	275	301
Affordable Housing Program assessments	14	15	28	31
NET INCOME	$ 129	$ 130	$ 247	$ 270

XML

Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 129	$ 130	$ 247	$ 270
Other comprehensive income (loss)
Unrealized gains (losses)	(17)	41	28	105
Pension and postretirement benefits	0	1	0	2
Total other comprehensive income (loss)	(17)	42	28	107
TOTAL COMPREHENSIVE INCOME (LOSS)	$ 112	$ 172	$ 275	$ 377

XML

Statements of Capital - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 7,021	$ 7,401
Proceeds from issuance of capital stock			4,015	2,905
Repurchases/redemptions of capital stock			(3,624)	(3,171)
Net shares reclassified (to) from mandatorily redeemable capital stock	$ (36)	$ (18)	(39)	(28)
Total Comprehensive Income	112	172	275	377
Cash dividends on capital stock			(109)	(88)
Ending Balance	7,539	7,396	7,539	7,396
Additional Capital from Merger [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			0	52
Cash dividends on capital stock				(52)
Ending Balance	0	0	0	0
Retained Earnings, Unrestricted [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			1,504	1,219
Total Comprehensive Income			198	216
Cash dividends on capital stock			(109)	(36)
Ending Balance	1,593	1,399	1,593	1,399
Retained Earnings, Restricted [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			335	231
Total Comprehensive Income			49	54
Ending Balance	384	285	384	285
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			1,839	1,450
Total Comprehensive Income			247	270
Cash dividends on capital stock			(109)	(36)
Ending Balance	1,977	1,684	1,977	1,684
Accumulated Other Comprehensive Income [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	159	47	114	(18)
Total Comprehensive Income			28	107
Ending Balance	142	89	142	89
Common Class B [Member] | Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 5,068	$ 5,917
BALANCE (shares)			51	59
Proceeds from issuance of capital stock			$ 4,015	$ 2,905
Proceeds from issuance of capital stock (shares)			40	29
Repurchases/redemptions of capital stock			$ 3,624	$ (3,171)
Repurchases/redemptions of capital stock (shares)			(37)	(32)
Net shares reclassified (to) from mandatorily redeemable capital stock			$ (39)	$ (28)
Net shares reclassified (to) from mandatorily redeemable capital stock (shares)			0	0
Ending Balance	$ 5,420	$ 5,623	$ 5,420	$ 5,623
BALANCE (shares)	54	56	54	56

XML

Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
OPERATING ACTIVITIES
Net Income	$ 247	$ 270
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation and amortization	18	16
Net (gains) losses on trading securities	24	(9)
Net change in derivatives and hedging activities	87	(1)
Other adjustments	1	(1)
Net change in:
Accrued interest receivable	(121)	(36)
Other assets	2	(4)
Accrued interest payable	27	29
Other liabilities	15	(15)
Total adjustments	53	(21)
Net Cash Provided by (Used in) Operating Activities	300	249
Net change in:
Interest-bearing deposits	63	17
Securities purchased under agreements to resell	(300)	2,425
Federal funds sold	(185)	(5)
Premises, software, and equipment	(11)	(21)
Increase (Decrease) in Loans to Federal Home Loan Banks	0	200
Trading securities
Proceeds from maturities of long-term	215	13
Available-for-sale securities
Proceeds from sales and maturities of long-term	1,703	1,002
Purchases of long-term	(497)	(402)
Held-to-maturity securities
Proceeds from sales and maturities of long-term	344	457
Advances
Principal collected	149,512	142,862
Originated	(157,016)	(130,163)
Mortgage loans held for portfolio
Principal collected	445	516
Originated or purchased	(669)	(566)
Proceeds from sales of foreclosed assets	3	4
Net Cash Provided by (Used in) Investing Activities	(6,393)	16,339
FINANCING ACTIVITIES
Net change in deposits	(11)	(150)
Increase (Decrease) in Loans from Federal Home Loan Banks	(600)	0
Net payments on derivative contracts with financing elements	0	(2)
Net proceeds from issuance of consolidated obligations
Discount notes	91,697	118,084
Bonds	21,052	26,848
Payments for maturing and retiring consolidated obligations
Discount notes	(85,275)	(132,486)
Bonds	(21,303)	(27,575)
Proceeds from issuance of capital stock	4,015	2,905
Payments for repurchases/redemptions of capital stock	(3,624)	(3,171)
Net payments for repurchases/redemptions of mandatorily redeemable capital stock	(51)	(212)
Cash dividends paid	(109)	(88)
Net cash provided by (used in) financing activities	5,791	(15,847)
Net increase (decrease) in cash and due from banks	(302)	741
Cash and due from banks at the beginning of the period	503	223
cash and due from banks at the end of the period	201	964
SUPPLEMENTAL DISCLOSURES
Interest paid	1,249	769
Affordable Housing Program payments	16	15
Noncash Investing and Financing Items [Abstract]
Capitalized interest on reverse mortgage securities	39	27
Mortgage loan charge-offs	0	1
Transfers of mortgage loans to real estate owned	3	3
Capital stock reclassified to (from) mandatorily redeemable capital stock, net	$ 39	$ 28

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Background Information

6 Months Ended

Jun. 30, 2018

Background Information [Abstract]

Nature of Operations [Text Block]

Background Information

The Federal Home Loan Bank of Des Moines (the Bank) is a federally chartered corporation organized on October 31, 1932, that is exempt from all federal, state, and local taxation (except real property taxes) and is one of 11 district Federal Home Loan Banks (FHLBanks). The FHLBanks were created under the authority of the Federal Home Loan Bank Act of 1932 (FHLBank Act). With the passage of the Housing and Economic Recovery Act of 2008 (Housing Act), the Federal Housing Finance Agency (Finance Agency) was established and became the new independent federal regulator of Federal National Mortgage Association (Fannie Mae) and Federal Home Loan Mortgage Corporation (Freddie Mac) (collectively, Enterprises), as well as the FHLBanks and FHLBanks’ Office of Finance, effective July 30, 2008. The Finance Agency’s mission is to ensure that the Enterprises and FHLBanks operate in a safe and sound manner so that they serve as a reliable source of liquidity and funding for housing finance and community investment. The Finance Agency establishes policies and regulations governing the operations of the Enterprises and FHLBanks. Each FHLBank operates as a separate entity with its own management, employees, and board of directors.

The FHLBanks are government-sponsored enterprises (GSEs) that serve the public by enhancing the availability of funds for residential mortgages and targeted community development. The Bank provides a readily available source of funding and liquidity to its member institutions and eligible housing associates in Alaska, Hawaii, Idaho, Iowa, Minnesota, Missouri, Montana, North Dakota, Oregon, South Dakota, Utah, Washington, Wyoming, and the U.S. Pacific territories of American Samoa, Guam, and the Commonwealth of the Northern Mariana Islands. Commercial banks, savings institutions, credit unions, insurance companies, and community development financial institutions (CDFIs) may apply for membership. State and local housing associates that meet certain statutory criteria may also borrow from the Bank; while eligible to borrow, housing associates are not members of the Bank and, as such, are not permitted to hold capital stock.

The Bank is a cooperative. This means the Bank is owned by its customers, whom the Bank calls members. As a condition of membership in the Bank, all members must purchase and maintain membership capital stock based on a percentage of their total assets, subject to a minimum and maximum amount, as of the preceding December 31^st. Each member is also required to purchase and maintain activity-based capital stock to support certain business activities with the Bank.

The Bank’s current and former members own all of the outstanding capital stock of the Bank. Former members own capital stock (included in mandatorily redeemable capital stock) to support business transactions still carried on the Bank’s Statements of Condition. All stockholders, including current and former members, may receive dividends on their capital stock investment to the extent declared by the Bank’s Board of Directors.

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Basis of Presentation

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Basis of Presentation [Text Block]

Basis of Presentation

The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements and should be read in conjunction with the audited financial statements for the year ended December 31, 2017, which are contained in the Bank’s 2017 Annual Report on Form 10-K filed with the SEC on March 12, 2018 (2017 Form 10-K).

In the opinion of management, the unaudited financial information is complete and reflects all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of results for the interim periods. The preparation of financial statements in accordance with GAAP requires management to make assumptions and estimates that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. The results of operations for interim periods are not necessarily indicative of the results to be expected for the full year ending December 31, 2018.

Reclassifications

Certain amounts in the Bank’s2017financial statements and footnotes have been reclassified to conform to the presentation as ofJune 30, 2018. In particular, due to the change in current presentation, variation margin on cleared derivatives has been allocated to the individual derivative instruments. Previously, this amount was included as a component of netting adjustments and cash collateral.For additional details regarding this reclassification, refer to “Note 10—Derivatives and Hedging Activities.”

SIGNIFICANT ACCOUNTING POLICIES

There have been no material changes to the Bank’s significant accounting policies during the six months endedJune 30, 2018. Descriptions of all significant accounting policies are included in “Note 1 — Summary of Significant Accounting Policies” in the 2017 Form 10-K.

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Recently Adopted and Issued Accounting Guidance

6 Months Ended

Jun. 30, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recently Adopted and Issued Accounting Guidance [Text Block]

Recently Adopted and Issued Accounting Guidance

ADOPTED ACCOUNTING GUIDANCE

Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07)

On March 10, 2017, the FASB issued amended guidance that requires an employer to disaggregate the service cost component from the other components of net periodic pension cost and net periodic postretirement benefit cost (net benefit cost). The amendments also provide explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement and allow only the service cost component of net benefit cost to be eligible for capitalization. This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018 and was adopted retrospectively. The adoption of this guidance resulted in a reclassification of other net benefit costs from “Compensation and Benefits” to “Other Expense, Net” in the Bank’s Statements of Income. The adoption of this guidance did not have a material effect on the Bank’s financial condition, result of operations, or cash flows.

Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15)

On August 26, 2016, the FASB issued amendments to clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. This guidance is intended to reduce existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018 and was adopted retrospectively. The adoption of this guidance did not have a direct effect on the Bank’s financial condition, results of operations, or cash flows. However, the Bank did revise its previously reported supplemental interest paid disclosure to align with the clarified accounting guidance.

Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01)

On January 5, 2016, the FASB issued amended guidance on certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This guidance includes, but is not limited to, the following:

• Requires equity investments (with certain exceptions) to be measured at fair value with changes in fair value recognized in income.

• Requires an entity to present separately in other comprehensive income (OCI) the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments.

• Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the statements of condition or the accompanying notes to the financial statements.

• Eliminates the requirement for public entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the statements of condition.

This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018 and was adopted using the modified retrospective approach. The adoption of this guidance affected the Bank’s fair value disclosures. However, the guidance did not have any effect on the Bank’s financial condition, results of operations, or cash flows.

Revenue from Contracts with Customers (ASU 2014-09)

On May 28, 2014, the FASB issued guidance on revenue from contracts with customers. This guidance outlines a single comprehensive model for recognizing revenue arising from contracts with customers and supersedes most current revenue recognition guidance. In addition, this guidance amends the existing requirements for the recognition of a gain or loss on the transfer of non-financial assets that are not in a contract with a customer. This guidance applies to all contracts with customers except those that are within the scope of certain other standards, such as financial instruments, certain guarantees, insurance contracts, and lease contracts. The guidance provides entities with the option of using either of the following adoption methods: a full retrospective method, retrospectively to each prior reporting period presented; or a modified retrospective method, retrospectively with the cumulative effect of initially applying this guidance recognized at the date of initial application.

On August 12, 2015, the FASB issued an amendment to defer the effective date of this guidance issued in May 2014 by one year. In 2016, the FASB issued additional amendments to clarify certain aspects of the new revenue guidance. However, these amendments did not change the core principle in the new revenue standard.

This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018, and was adopted retrospectively. Given that the majority of the Bank’s financial instruments and other contractual rights that generate revenue are covered by other U.S. GAAP, the adoption of this guidance did not have a material effect on the Bank’s financial condition, results of operations, and cash flows.

ISSUED ACCOUNTING GUIDANCE

Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12)

On August 28, 2017, the FASB issued amended guidance to improve the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements. This guidance requires that, for fair value hedges, the entire change in the fair value of the hedging instrument included in the assessment of hedge effectiveness be presented in the same income statement line that is used to present the earnings effect of the hedged item. For cash flow hedges, the entire change in the fair value of the hedging instrument included in the assessment of hedge effectiveness must be recorded in OCI. In addition, the amendments include certain targeted improvements to the assessment of hedge effectiveness and permit, among other things, the following:

• Measurement of the change in fair value of the hedged item on the basis of the benchmark rate component of the contractual coupon cash flows determined at hedge inception.

• Measurement of the hedged item in a partial-term fair value hedge of interest-rate risk by assuming the hedged item has a term that reflects only the designated cash flows being hedged.

• Consideration only of how changes in the benchmark interest rate affect a decision to settle a prepayable instrument before its scheduled maturity in calculating the change in the fair value of the hedged item attributable to interest-rate risk.

• For a cash flow hedge of interest-rate risk of a variable-rate financial instrument, an entity could designate as the hedged risk the variability in cash flows attributable to the contractually specified interest-rate.

This guidance becomes effective for the Bank for the interim and annual periods beginning on January 1, 2019, and early adoption is permitted. For all cash flow hedges existing on the date of adoption, this guidance should be applied through a cumulative-effect adjustment to accumulated other comprehensive income (AOCI) with a corresponding adjustment to retained earnings as of the beginning of the year of adoption. The amended presentation and disclosure guidance is required only prospectively. The Bank does not intend to adopt this guidance early. The Bank is in the process of evaluating this guidance, and its effect on the Bank’s financial condition, results of operations, and cash flows has not yet been determined.

Premium Amortization on Purchased Callable Debt Securities (ASU 2017-08)

On March 30, 2017, the FASB issued guidance to shorten the amortization period for certain purchased callable debt securities held at a premium. Specifically, this guidance requires the premium to be amortized to the earliest call date. This guidance does not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. This guidance is effective for the Bank for the interim and annual periods beginning on January 1, 2019, and early adoption is permitted. This guidance should be applied using a modified retrospective method through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Bank does not intend to adopt this guidance early. The Bank has evaluated this guidance and its effect on the Bank’s financial condition, results of operations, and cash flows is not expected to be material.

Measurement of Credit Losses on Financial Instruments (ASU 2016-13)

On June 16, 2016, the FASB issued amended guidance for the accounting of credit losses on financial instruments. The amendments require entities to measure expected credit losses based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The new guidance requires a financial asset, or a group of financial assets, measured at amortized cost to be presented at the net amount expected to be collected. The guidance also requires, among other things, the following:

• The statement of income to reflect the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period.

• Entities to determine the allowance for credit losses for purchased financial assets with a more-than-insignificant amount of credit deterioration since origination (PCD) that are measured at amortized cost in a similar manner to other financial assets measured at amortized cost. The initial allowance for credit losses is required to be added to the purchase price of the assets acquired.

• Entities to record credit losses relating to available-for-sale (AFS) debt securities through an allowance for credit losses. The amendments limit the allowance for credit losses to the amount by which fair value is below amortized cost.

• Public entities to further disaggregate the current disclosure of credit quality indicators in relation to the amortized cost of financing receivables by the year of origination (i.e., vintage).

This guidance is effective for the Bank for the interim and annual periods beginning on January 1, 2020. Early application is permitted as of the interim and annual reporting periods beginning after December 15, 2018. This guidance should be applied using a modified-retrospective approach, through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. In addition, entities are required to use a prospective transition approach for PCD assets upon adoption and for debt securities for which an other-than-temporary impairment had been recognized before the effective date. The Bank does not intend to adopt the new guidance early. While the Bank is in the process of evaluating this guidance, the Bank expects the adoption of the guidance may result in an increase in the allowance for credit losses and corresponding expense, including an allowance for debt securities, given the requirement to assess losses for the entire estimated life of the financial asset. The effect on the Bank’s financial condition, results of operations, and cash flows will depend upon the composition of financial assets held by the Bank at the adoption date as well as the economic conditions and forecasts at that time.

Leases (ASU 2016-02)

On February 25, 2016, the FASB issued guidance which requires recognition of lease assets and lease liabilities on the statement of condition and disclosure of key information about leasing arrangements. Specifically, this guidance requires a lessee, of operating or finance leases, to recognize on the statement of condition a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election not to recognize lease assets and lease liabilities. Under previous GAAP, a lessee was not required to recognize lease assets and lease liabilities arising from operating leases on the statement of condition. While this guidance does not fundamentally change lessor accounting, some changes have been made to align that guidance with the lessee guidance and other areas within GAAP.

This guidance becomes effective for the Bank for the interim and annual periods beginning on January 1, 2019, and early application is permitted. In July 2018, the FASB issued amendments that, among other things, provide entities with an additional transition method to adopt the guidance. The new transition method allows entities an option to recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Bank does not intend to adopt this new guidance early. Upon adoption, the Bank expects to report higher assets and liabilities as a result of recording right-of-use assets and lease liabilities on its statements of condition. The Bank is in the process of evaluating this guidance, and its effect on the Bank’s financial condition, results of operations, and cash flows has not yet been determined.

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Trading Securities

6 Months Ended

Jun. 30, 2018

Trading Securities [Member]

Investment Holdings [Line Items]

Investments in Debt and Marketable Equity Securities (and certain trading assets) [Text Block]

Trading Securities

MAJOR SECURITY TYPES

Trading securities were as follows (dollars in millions):

	June 30, 2018		December 31, 2017
Non-mortgage-backed securities
U.S. obligations1	$	182	$	197
GSE and Tennessee Valley Authority obligations	57		260
Other2	265		272
Total non-mortgage-backed securities	504		729
Mortgage-backed securities
GSE multifamily	433		448
Total fair value	$	937	$	1,177

1 Represents investment securities backed by the full faith and credit of the U.S. Government.

2 Consists of taxable municipal bonds.

NET GAINS (LOSSES) ON TRADING SECURITIES

The Bank did not sell any trading securities during the three and six months ended June 30,2018 and 2017. During the three and six months ended June 30, 2018, the Bank recorded net holding losses of $8 million and $24 million on its trading securities compared to net holding gains of $4 million and $9 million for the same periods in 2017.

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Available-for-Sale Securities

6 Months Ended

Jun. 30, 2018

Available-for-sale Securities [Member]

Investment Holdings [Line Items]

Investments in Debt and Marketable Equity Securities (and certain trading assets) [Text Block]

Available-for-Sale Securities

MAJOR SECURITY TYPES

AFS securities were as follows (dollars in millions):

	June 30, 2018
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
U.S. obligations2	$	2,808	$	13	$	(1	)	$	2,820
GSE and Tennessee Valley Authority obligations	1,001		38		—			1,039
State or local housing agency obligations	908		—		(2		)	906
Other3	260		12		—			272
Total non-mortgage-backed securities	4,977		63		(3		)	5,037
Mortgage-backed securities
U.S. obligations single-family2	4,065		33		(1		)	4,097
GSE single-family	883		7		(5		)	885
GSE multifamily	9,380		59		(7		)	9,432
Total mortgage-backed securities	14,328		99		(13		)	14,414
Total	$	19,305	$	162	$	(16	)	$	19,451

	December 31, 2017
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
U.S. obligations2	$	3,096	$	8	$	(5	)	$	3,099
GSE and Tennessee Valley Authority obligations	1,197		39		—			1,236
State or local housing agency obligations	935		—		(1		)	934
Other3	269		9		—			278
Total non-mortgage-backed securities	5,497		56		(6		)	5,547
Mortgage-backed securities
U.S. obligations single-family2	3,716		11		(1		)	3,726
GSE single-family	983		7		(2		)	988
GSE multifamily	10,482		57		(4		)	10,535
Total mortgage-backed securities	15,181		75		(7		)	15,249
Total	$	20,678	$	131	$	(13	)	$	20,796

1 Amortized cost includes adjustments made to the cost basis of an investment for accretion, amortization, and/or fair value hedge accounting adjustments.

2 Represents investment securities backed by the full faith and credit of the U.S. Government.

3 Consists of taxable municipal bonds and/or Private Export Funding Corporation (PEFCO) bonds.

UNREALIZED LOSSES

The following tables summarize AFS securities with unrealized losses by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in millions). In cases where the gross unrealized losses for an investment category are less than $1 million, the losses are not reported.

	June 30, 2018
	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
U.S. obligations1	$	316	$	—		$	338	$	(1	)	$	654	$	(1	)
State or local housing agency obligations	13		—			594		(2		)	607		(2		)
Total non-mortgage-backed securities	329		—			932		(3		)	1,261		(3		)
Mortgage-backed securities
U.S. obligations single-family1	497		(1		)	—		—			497		(1		)
GSE single-family	297		(5		)	48		—			345		(5		)
GSE multifamily	2,653		(4		)	859		(3		)	3,512		(7		)
Total mortgage-backed securities	3,447		(10		)	907		(3		)	4,354		(13		)
Total	$	3,776	$	(10	)	$	1,839	$	(6	)	$	5,615	$	(16	)

	December 31, 2017
	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
U.S. obligations1	$	29	$	—		$	1,783	$	(5	)	$	1,812	$	(5	)
State or local housing agency obligations	6		—			655		(1		)	661		(1		)
Total non-mortgage-backed securities	35		—			2,438		(6		)	2,473		(6		)
Mortgage-backed securities
U.S. obligations single-family1	111		—			887		(1		)	998		(1		)
GSE single-family	222		(2		)	53		—			275		(2		)
GSE multifamily	224		(1		)	1,756		(3		)	1,980		(4		)
Total mortgage-backed securities	557		(3		)	2,696		(4		)	3,253		(7		)
Total	$	592	$	(3	)	$	5,134	$	(10	)	$	5,726	$	(13	)

1 Represents investment securities backed by the full faith and credit of the U.S. Government.

CONTRACTUAL MATURITY

The following table summarizes AFS securities by contractual maturity. Expected maturities of some securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment fees (dollars in millions):

	June 30, 2018				December 31, 2017
Year of Contractual Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Non-mortgage-backed securities
Due in one year or less	$	26	$	26	$	158	$	159
Due after one year through five years	969		976		750		755
Due after five years through ten years	3,160		3,181		3,574		3,583
Due after ten years	822		854		1,015		1,050
Total non-mortgage-backed securities	4,977		5,037		5,497		5,547
Mortgage-backed securities	14,328		14,414		15,181		15,249
Total	$	19,305	$	19,451	$	20,678	$	20,796

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Held-to-Maturity Securities

6 Months Ended

Jun. 30, 2018

Held-to-maturity Securities [Member]

Investment Holdings [Line Items]

Investments in Debt and Marketable Equity Securities (and certain trading assets) [Text Block]

Held-to-Maturity Securities

MAJOR SECURITY TYPES

Held-to-maturity (HTM) securities were as follows (dollars in millions):

	June 30, 2018
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
GSE and Tennessee Valley Authority obligations	$	391	$	49	$	(2	)	$	438
State or local housing agency obligations	427		1		(2		)	426
Total non-mortgage-backed securities	818		50		(4		)	864
Mortgage-backed securities
U.S. obligations single-family2	11		—		—			11
U.S. obligations commercial2	2		—		—			2
GSE single-family	2,453		8		(24		)	2,437
Private-label residential	11		—		—			11
Total mortgage-backed securities	2,477		8		(24		)	2,461
Total	$	3,295	$	58	$	(28	)	$	3,325

	December 31, 2017
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
GSE and Tennessee Valley Authority obligations	$	393	$	65	$	—		$	458
State or local housing agency obligations	454		2		(2		)	454
Total non-mortgage-backed securities	847		67		(2		)	912
Mortgage-backed securities
U.S. obligations single-family2	15		—		—			15
U.S. obligations commercial2	2		—		—			2
GSE single-family	2,752		7		(14		)	2,745
Private-label residential	12		—		—			12
Total mortgage-backed securities	2,781		7		(14		)	2,774
Total	$	3,628	$	74	$	(16	)	$	3,686

1 Amortized cost includes adjustments made to the cost basis of an investment for accretion or amortization.

2 Represents investment securities backed by the full faith and credit of the U.S. Government.

UNREALIZED LOSSES

The following tables summarize HTM securities with unrealized losses by major security type and the length of time that individual securities have been in a continuous unrealized loss position (dollars in millions). In cases where the gross unrealized losses for an investment category are less than $1 million, the losses are not reported.

	June 30, 2018
	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
GSE and Tennessee Valley Authority obligations	$	90	$	(2	)	$	—	$	—		$	90	$	(2	)
State or local housing agency obligations	$	17	$	—		$	162	$	(2	)	$	179	$	(2	)
Total non-mortgage-backed securities	107		(2		)	162		(2		)	269		(4		)
Mortgage-backed securities
U.S. obligations single-family1	—		—			5		—			5		—
U.S. obligations commercial1	1		—			1		—			2		—
GSE single-family	12		—			1,200		(24		)	1,212		(24		)
Private-label residential	—		—			7		—			7		—
Total mortgage-backed securities	13		—			1,213		(24		)	1,226		(24		)
Total	$	120	$	(2	)	$	1,375	$	(26	)	$	1,495	$	(28	)

	December 31, 2017
	Less than 12 Months				12 Months or More					Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
State or local housing agency obligations	$	2	$	—	$	168	$	(2	)	$	170	$	(2	)
Total non-mortgage-backed securities	2		—		168		(2		)	170		(2		)
Mortgage-backed securities
U.S. obligations single-family1	7		—		1		—			8		—
U.S. obligations commercial1	1		—		1		—			2		—
GSE single-family	42		—		1,427		(14		)	1,469		(14		)
Private-label residential	—		—		8		—			8		—
Total mortgage-backed securities	50		—		1,437		(14		)	1,487		(14		)
Total	$	52	$	—	$	1,605	$	(16	)	$	1,657	$	(16	)

1 Represents investment securities backed by the full faith and credit of the U.S. Government.

CONTRACTUAL MATURITY

The following table summarizes HTM securities by contractual maturity. Expected maturities of some securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment fees (dollars in millions):

	June 30, 2018				December 31, 2017
Year of Contractual Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Non-mortgage-backed securities
Due in one year or less	$	14	$	14	$	20	$	20
Due after one year through five years	71		71		72		72
Due after five years through ten years	340		362		344		376
Due after ten years	393		417		411		444
Total non-mortgage-backed securities	818		864		847		912
Mortgage-backed securities	2,477		2,461		2,781		2,774
Total	$	3,295	$	3,325	$	3,628	$	3,686

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Other-Than-Temporary Impairment

6 Months Ended

Jun. 30, 2018

Other than Temporary Impairment Losses, Investments [Abstract]

Other-Than-Temporary Impairment [Text Block]

Other-Than-Temporary Impairment

The Bank evaluates its individual AFS and HTM securities in an unrealized loss position for other-than-temporary impairment (OTTI) on a quarterly basis. As part of its evaluation of securities for OTTI, the Bank considers its intent to sell each debt security and whether it is more likely than not that it will be required to sell the security before its anticipated recovery. If either of these conditions is met, the Bank will recognize an OTTI charge to earnings equal to the entire difference between the security’s amortized cost basis and its fair value at the reporting date. For securities in an unrealized loss position that meet neither of these conditions, the Bank performs analyses to determine if any of these securities are other-than-temporarily impaired. The analysis of the Bank’s AFS and HTM investment securities in an unrealized loss position at June 30, 2018 is discussed below:

• U.S. obligations and GSE and Tennessee Valley Authority obligations. The unrealized losses were due primarily to changes in interest rates and not to a significant deterioration in the fundamental credit quality of the obligations. The strength of the issuers’ guarantees through direct obligations or support from the U.S. Government was sufficient to protect the Bank from losses based on current expectations. The Bank expects to recover the amortized cost bases on these securities and neither intends to sell these securities nor considers it more likely than not that it will be required to sell these securities before recovery of their amortized cost bases. As such, the Bank did not consider these securities to be other-than-temporarily impaired at June 30, 2018.

• State or local housing agency obligations. The unrealized losses were due to changes in interest rates and illiquidity in the credit markets, and not to a significant deterioration in the fundamental credit quality of the obligations. The creditworthiness of the issuers and the strength of the underlying collateral and credit enhancements were sufficient to protect the Bank from losses based on current expectations. The Bank does not intend to sell these securities nor is it more likely than not that it will be required to sell these securities before recovery of their amortized cost bases. As such, the Bank did not consider these securities to be other-than-temporarily impaired at June 30, 2018.

• Private-label residential mortgage-backed securities. On a quarterly basis, the Bank engages other designated FHLBanks to perform cash flow analyses on its private-label mortgage-backed securities (private-label MBS). As of June 30, 2018, the Bank compared the present value of cash flows expected to be collected with respect to its private-label MBS to the amortized cost bases of the securities to determine whether a credit loss existed. At June 30, 2018, the Bank’s cash flow analyses for private-label MBS did not project any credit losses. The Bank does not intend to sell its private-label MBS nor is it more likely than not that the Bank will be required to sell its private-label MBS before recovery of their amortized cost bases. As a result, the Bank did not consider any of its private-label MBS to be other-than-temporarily impaired at June 30, 2018.

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Advances

6 Months Ended

Jun. 30, 2018

Advances [Abstract]

Advances [Text Block]

Advances

CONTRACTUAL MATURITY

The following table summarizes the Bank’s advances outstanding by contractual maturity (dollars in millions):

	June 30, 2018					December 31, 2017
Year of Contractual Maturity	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Overdrawn demand deposit accounts	$	34		3.10	%	$	1		3.63	%
Due in one year or less	52,016			2.16		45,310			1.62
Due after one year through two years	18,954			2.25		17,094			1.79
Due after two years through three years	20,620			2.31		14,222			1.64
Due after three years through four years	10,543			2.51		17,561			1.79
Due after four years through five years	3,918			2.51		3,089			1.91
Thereafter	4,097			2.83		5,401			2.28
Total par value	110,182			2.28	%	102,678			1.73	%
Premiums	44					53
Discounts	(10		)			(12		)
Fair value hedging adjustments	(253		)			(106		)
Total	$	109,963				$	102,613

The following table summarizes all advances by year of contractual maturity or next call date for callable advances, and by year of contractual maturity or next put date for putable advances (dollars in millions):

	Year of Contractual Maturity or Next Call Date				Year of Contractual Maturity or Next Put Date
	June 30, 2018		December 31, 2017		June 30, 2018		December 31, 2017
Overdrawn demand deposit accounts	$	34	$	1	$	34	$	1
Due in one year or less	83,073		69,971		52,075		45,372
Due after one year through two years	11,161		16,539		18,954		17,094
Due after two years through three years	3,458		3,809		20,595		14,222
Due after three years through four years	7,746		8,511		10,533		17,520
Due after four years through five years	1,895		1,276		3,909		3,073
Thereafter	2,815		2,571		4,082		5,396
Total par value	$	110,182	$	102,678	$	110,182	$	102,678

The Bank offers advances to members and eligible housing associates that may be prepaid on pertinent dates (call dates) prior to maturity without incurring prepayment fees (callable advances). Other advances may require a prepayment fee or credit that makes the Bank financially indifferent to the prepayment of the advance. At June 30, 2018andDecember 31, 2017,the Bank had callable advances outstanding totaling $39.6 billion and $27.0 billion.

The Bank also offers putable advances. With a putable advance, the Bank has the right to terminate the advance from the borrower on the predetermined exercise dates. Generally, these put options are exercised when interest rates increase relative to contractual rates. At June 30, 2018andDecember 31, 2017, the Bank had putable advances outstanding totaling $89 million and $405 million.

PREPAYMENT FEES

The Bank generally charges a prepayment fee for advances that a borrower elects to terminate prior to the stated maturity or outside of a predetermined call or put date. The fees charged are priced to make the Bank financially indifferent to the prepayment of the advance. For certain advances with symmetrical prepayment features, the Bank may charge the borrower a prepayment fee or pay the borrower a prepayment credit, depending on certain circumstances, such as movements in interest rates, when the advance is prepaid. Prepayment fees and credits are recorded net of fair value hedging adjustments in advance income in the Statements of Income. During the three and six months ended June 30, 2018, the Bank recorded prepayment fees on advances, net of $1 million and $6 million compared to $1 million for both of the same periods in 2017.

CREDIT RISK EXPOSURE AND SECURITY TERMS

The Bank’s potential credit risk from advances is concentrated in commercial banks, savings institutions, and insurance companies. At June 30, 2018 and December 31, 2017, the Bank had outstanding advances of $51.0 billion and $45.8 billion to one member that individually held 10 percent or more of the Bank’s advances, which represents 46 percent and 45 percent of total outstanding advances. For information related to the Bank’s credit risk exposure on advances, refer to “Note 9 — Allowance for Credit Losses.”

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Mortgage Loans Held for Portfolio

6 Months Ended

Jun. 30, 2018

Mortgage Loans on Real Estate [Abstract]

Mortgage Loans Held for Portfolio [Text Block]

Mortgage Loans Held for Portfolio

Mortgage loans held for portfolio includes conventional mortgage loans or government-guaranteed or -insured mortgage loans obtained through the Mortgage Partnership Finance (MPF) program (Mortgage Partnership Finance and MPF are registered trademarks of the FHLBank of Chicago) or Mortgage Purchase Program (MPP). The MPF program, which represents 96 percent of the Bank’s mortgage loans held for portfolio, involves investment by the Bank in single-family mortgage loans held for portfolio that are either purchased from participating financial institutions (PFIs) or funded by the Bank through PFIs. MPF loans may also be acquired through participations in pools of eligible mortgage loans purchased from other FHLBanks. The Bank’s MPF PFIs generally originate, service, and credit enhance mortgage loans that are sold to the Bank. MPF PFIs participating in the servicing release program do not service the loans owned by the Bank. The servicing on these loans is sold concurrently by the MPF PFI to a designated mortgage service provider.

Under the MPP, the Bank acquired single-family mortgage loans that were purchased directly from MPP PFIs. Similar to the MPF program, MPP PFIs generally originated, serviced, and credit enhanced the mortgage loans sold to the Bank. The MPP program represents four percent of the Bank’s mortgage loans held for portfolio. The Bank does not currently purchase mortgage loans under this program. All loans in this portfolio were originated prior to 2006.

The following table presents information on the Bank’s mortgage loans held for portfolio (dollars in millions):

	June 30, 2018			December 31, 2017
Fixed rate, long-term single-family mortgage loans	$	6,281		$	5,998
Fixed rate, medium-term1 single-family mortgage loans	934			1,003
Total unpaid principal balance	7,215			7,001
Premiums	99			98
Discounts	(6		)	(6		)
Basis adjustments from mortgage loan commitments	3			5
Total mortgage loans held for portfolio	7,311			7,098
Allowance for credit losses	(1		)	(2		)
Total mortgage loans held for portfolio, net	$	7,310		$	7,096

1 Medium-term is defined as a term of 15 years or less.

The following table presents the Bank’s mortgage loans held for portfolio by collateral or guarantee type (dollars in millions):

	June 30, 2018		December 31, 2017
Conventional mortgage loans	$	6,699	$	6,472
Government-insured mortgage loans	516		529
Total unpaid principal balance	$	7,215	$	7,001

For information related to the Bank’s credit risk exposure on mortgage loans held for portfolio, refer to “Note 9 — Allowance for Credit Losses.”

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Allowance for Credit Losses

6 Months Ended

Jun. 30, 2018

Allowance for Credit Losses [Abstract]

Allowance for Credit Losses [Text Block]

Allowance for Credit Losses

The Bank has established an allowance for credit losses methodology for each of its financing receivable portfolio segments: advances, standby letters of credit, and other extensions of credit to borrowers (collectively, credit products), government-insured mortgage loans held for portfolio, MPF and MPP conventional mortgage loans held for portfolio, and term securities purchased under agreements to resell.

CREDIT PRODUCTS

The Bank manages its credit exposure to credit products through an approach that includes establishing a credit limit for each borrower. This approach includes an ongoing review of each borrower’s financial condition in conjunction with the Bank’s collateral and lending policies to limit risk of loss while balancing borrowers’ needs for a reliable source of funding. In addition, the Bank lends to eligible borrowers in accordance with the FHLBank Act, Finance Agency regulations, and other applicable laws.

The Bank is required by regulation to obtain sufficient collateral to fully secure credit products. The estimated value of the collateral required to secure each borrower’s credit products is calculated by applying collateral discounts, or haircuts, to the unpaid principal balance or market value, if available, of the collateral. Eligible collateral includes (i) fully disbursed whole first mortgages on improved residential real property or securities representing a whole interest in such mortgages, (ii) loans and securities issued, insured, or guaranteed by the U.S. Government or any agency thereof, including mortgage-backed securities (MBS) issued or guaranteed by Fannie Mae, Freddie Mac, or Government National Mortgage Association and Federal Family Education Loan Program guaranteed student loans, (iii) cash deposited with the Bank, and (iv) other real estate-related collateral acceptable to the Bank, such as second lien mortgages, home equity lines of credit, tax-exempt municipal securities, and commercial real estate mortgages, provided such collateral has a readily ascertainable value and the Bank can perfect a security interest in such property. In addition, community financial institutions may also pledge collateral consisting of secured small business, small agri-business, or small farm loans. As additional security, the FHLBank Act provides that the Bank has a lien on each member’s capital stock investment; however, capital stock cannot be pledged as collateral to secure credit exposures.

Collateral arrangements may vary depending upon borrower credit quality, financial condition and performance, borrowing capacity, and overall credit exposure to the borrower. The Bank can also require additional or substitute collateral to protect its security interest. The Bank periodically evaluates and makes changes to its collateral guidelines and collateral haircuts.

Borrowers may pledge collateral to the Bank by executing a blanket pledge agreement, specifically assigning collateral, or placing physical possession of collateral with the Bank or its custodians. The Bank perfects its security interest in all pledged collateral by filing Uniform Commercial Code financing statements or by taking possession or control of the collateral. Under the FHLBank Act, any security interest granted to the Bank by its members, or any affiliates of its members, has priority over the claims and rights of any party (including any receiver, conservator, trustee, or similar party having rights of a lien creditor), unless those claims and rights would be entitled to priority under otherwise applicable law and are held by actual purchasers or by parties that have perfected security interests.

Under a blanket pledge agreement, the Bank is granted a security interest in all financial assets of the borrower to fully secure the borrower’s obligation. Other than securities and cash deposits, the Bank does not initially take delivery of collateral from blanket agreement borrowers. In the event of deterioration in the financial condition of a blanket pledge agreement, the Bank has the ability to require delivery of pledged collateral sufficient to secure the borrower’s obligation. With respect to non-blanket pledge agreement borrowers that are federally insured, the Bank generally requires collateral to be specifically assigned. With respect to non-blanket pledge agreement borrowers that are not federally insured (typically insurance companies, CDFIs, and housing associates), the Bank generally takes control of collateral through the delivery of cash, securities, or loans to the Bank or its custodians.

Using a risk-based approach and taking into consideration each borrower’s financial strength, the Bank considers the types and level of collateral to be the primary indicator of credit quality on its credit products. At June 30, 2018 and December 31, 2017, the Bank had rights to collateral on a borrower-by-borrower basis with an unpaid principal balance or market value, if available, in excess of its outstanding extensions of credit.

At June 30, 2018 and December 31, 2017, none of the Bank’s credit products were past due, on non-accrual status, or considered impaired. In addition, there were no troubled debt restructurings (TDRs) related to credit products during the six months ended June 30, 2018 and 2017.

The Bank has never experienced a credit loss on its credit products. Based upon the Bank’s collateral and lending policies, the collateral held as security, and the repayment history on credit products, management has determined that there were no probable credit losses on its credit products as of June 30, 2018 and December 31, 2017. Accordingly, the Bank has not recorded any allowance for credit losses for its credit products.

GOVERNMENT-INSURED MORTGAGE LOANS

The Bank invests in government-insured fixed rate mortgage loans in both the MPF and MPP portfolios that are insured or guaranteed by the Federal Housing Administration, the Department of Veterans Affairs, and/or the Rural Housing Service of the Department of Agriculture. The servicer or PFI obtains and maintains insurance or a guaranty from the applicable government agency. The servicer or PFI is responsible for compliance with all government agency requirements and for obtaining the benefit of the applicable guarantee or insurance with respect to defaulted government-insured mortgage loans. Any losses incurred on these loans that are not recovered from the insurer/guarantor are absorbed by the servicers. As such, the Bank only has credit risk for these loans if the servicer or PFI fails to pay for losses not covered by the guarantee or insurance. Management views this risk as remote and has never experienced a credit loss on its government-insured mortgage loans. As a result, the Bank did not establish an allowance for credit losses for its government-insured mortgage loans at June 30, 2018 and December 31, 2017. Furthermore, none of these mortgage loans have been placed on non-accrual status because of the U.S. Government guarantee or insurance on these loans and the contractual obligation of the loan servicer to repurchase the loans when certain criteria are met.

CONVENTIONAL MORTGAGE LOANS

The Bank’s management of credit risk in the MPF and MPP programs involves several layers of legal loss protection that are defined in agreements among the Bank and its participating PFIs. These loss layers may vary depending on the product alternatives selected and credit profile of the loans. The Bank’s loss protection consists of the following loss layers, in order of priority:

• Homeowner Equity.

• Primary Mortgage Insurance (PMI). At the time of origination, PMI is required on all loans with homeowner equity of less than 20 percent of the original purchase price or appraised value, whichever is less and as applicable to the specific loan.

• First Loss Account (FLA). For each MPF master commitment, the Bank’s potential loss exposure prior to the PFI’s credit enhancement obligation is estimated and tracked in a memorandum account called the FLA.

• Credit Enhancement Obligation of PFI. PFIs have a credit enhancement obligation at the time an MPF mortgage loan is purchased to absorb certain losses in excess of the FLA in order to limit the Bank’s loss exposure to that of an investor in an investment grade MBS. PFIs pledge collateral to secure this obligation.

Allowance Methodology

The Bank utilizes an allowance for credit losses to reserve for estimated losses in its conventional MPF and MPP mortgage loan portfolios at the balance sheet date. The measurement of the Bank’s MPF and MPP allowance for credit losses is determined by the following:

• reviewing similar conventional mortgage loans for impairment on a collective basis. This evaluation is primarily based on the following factors: (i) current loan delinquencies, (ii) loans migrating to collateral-dependent status, and (iii) actual historical loss severities;

• reviewing conventional mortgage loans for impairment on an individual basis; and

• estimating additional credit losses in the conventional mortgage loan portfolio. These losses result from other factors that may not be captured in the methodology previously described at the balance sheet date, which include but are not limited to certain quantifiable economic factors, such as unemployment rates and home prices impacting housing markets.

The following table summarizes the allowance for credit losses and the recorded investment of the Bank’s conventional mortgage loan portfolio by impairment methodology (dollars in millions):

	June 30, 2018		December 31, 2017
Allowance for credit losses
Collectively evaluated for impairment	$	1	$	2
Recorded investment1
Collectively evaluated for impairment	$	6,759	$	6,530
Individually evaluated for impairment, without a related allowance	59		61
Total recorded investment	$	6,818	$	6,591

1    Represents the unpaid principal balance adjusted for accrued interest, unamortized premiums, discounts, basis adjustments, and direct write-downs.

CREDIT QUALITY INDICATORS

Key credit quality indicators for mortgage loans include the migration of past due loans, loans in process of foreclosure, and non-accrual loans. The tables below summarize the Bank’s key credit quality indicators for mortgage loans (dollars in millions):

	June 30, 2018
	Conventional MPF/MPP			Government-Guaranteed or -Insured6			Total
Past due 30 - 59 days	$	44		$	18		$	62
Past due 60 - 89 days	13			6			19
Past due 90 - 179 days	10			3			13
Past due 180 days or more	16			4			20
Total past due mortgage loans	83			31			114
Total current mortgage loans	6,735			499			7,234
Total recorded investment of mortgage loans1	$	6,818		$	530		$	7,348
In process of foreclosure (included above)2	$	11		$	2		$	13
Serious delinquency rate3	—		%	1		%	—		%
Past due 90 days or more and still accruing interest4	—			$	7		$	7
Non-accrual mortgage loans5	$	40		$	—		$	40

1 Represents the unpaid principal balance adjusted for accrued interest, unamortized premiums, discounts, basis adjustments, and direct write-downs.

2 Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans depending on their payment status.

3 Represents mortgage loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment.

4 Represents government-insured mortgage loans that are 90 days or more past due.

5 Represents conventional mortgage loans that are 90 days or more past due and TDRs.

6 The Bank did not record any allowance for credit losses on government-guaranteed or -insured mortgage loans at June 30, 2018 and December 31, 2017.

	December 31, 2017
	Conventional MPF/MPP			Government- Guaranteed or -Insured6			Total
Past due 30 - 59 days	$	58		$	19		$	77
Past due 60 - 89 days	16			6			22
Past due 90 - 179 days	15			5			20
Past due 180 days or more	21			6			27
Total past due mortgage loans	110			36			146
Total current mortgage loans	6,481			507			6,988
Total recorded investment of mortgage loans1	$	6,591		$	543		$	7,134
In process of foreclosure (included above)2	$	12		$	2		$	14
Serious delinquency rate3	1		%	2		%	1		%
Past due 90 days or more and still accruing interest4	$	—		$	11		$	11
Non-accrual mortgage loans5	$	48		$	—		$	48

1 Represents the unpaid principal balance adjusted for accrued interest, unamortized premiums, discounts, basis adjustments, and direct write-downs.

2 Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans depending on their payment status.

3 Represents mortgage loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment.

4 Represents government-insured mortgage loans that are 90 days or more past due.

5 Represents conventional mortgage loans that are 90 days or more past due and TDRs.

6 The Bank did not record any allowance for credit losses on government-guaranteed or -insured mortgage loans at June 30, 2018 and December 31, 2017.

INDIVIDUALLY EVALUATED IMPAIRED LOANS

As previously described, the Bank evaluates certain conventional mortgage loans for impairment individually. A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect all amounts due according to the contractual terms of the loan agreement.

The Bank did not recognize any interest income on impaired loans during the three and six months ended June 30, 2018 and 2017.

During both the three and six months ended June 30, 2018, the average recorded investment of conventional impaired loans without an allowance was $60 million as compared to $68 million and $69 million for the same periods in 2017.

TERM SECURITIES PURCHASED UNDER AGREEMENTS TO RESELL

Term securities purchased under agreements to resell are considered collateralized financing agreements and represent short-term investments. The terms of these investments are structured such that if the market value of the underlying securities decreases below the market value required as collateral, the counterparty must place an equivalent amount of additional securities as collateral or remit an equivalent amount of cash. Otherwise, the dollar value of the resale agreement will decrease accordingly. If an agreement to resell is deemed to be impaired, the difference between the fair value of the collateral and the amortized cost of the agreement will be charged to earnings to establish an allowance for credit losses. Based upon the collateral held as security, the Bank determined that no allowance for credit losses was needed for its term securities purchased under agreements to resell at June 30, 2018 and December 31, 2017.

OFF-BALANCE SHEET CREDIT EXPOSURES

At June 30, 2018 and December 31, 2017, the Bank did not record a liability to reflect an allowance for credit losses for off-balance sheet credit exposures. For additional information on the Bank’s off-balance sheet credit exposures, see “Note 14 — Commitments and Contingencies.”

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Derivatives and Hedging Activities

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging Activities [Text Block]

Derivatives and Hedging Activities

NATURE OF BUSINESS ACTIVITY

The Bank is exposed to interest rate risk primarily from the effect of interest rate changes on its interest-earning assets and its related funding sources. The goal of the Bank’s interest rate risk management strategy is not to eliminate interest rate risk, but to manage it within appropriate limits. To mitigate the risk of loss, the Bank has established policies and procedures, which include guidelines on the amount of exposure to interest rate changes it is willing to accept.

The Bank enters into derivative contracts to manage the interest rate risk exposures inherent in its otherwise unhedged assets and funding positions. Finance Agency regulations and the Bank’s Enterprise Risk Management Policy (ERMP) establish guidelines for derivatives, prohibit trading in or the speculative use of derivatives, and limit credit risk arising from derivatives.

Derivative financial instruments are used by the Bank to achieve its financial and risk management objectives. The Bank reevaluates its hedging strategies from time to time and may change the hedging techniques it uses or may adopt new strategies. The most common ways in which the Bank uses derivatives are to:

• reduce the interest rate sensitivity and repricing gaps of assets and liabilities;

• preserve an interest rate spread between the yield of an asset and the cost of the related liability. Without the use of derivatives, this interest rate spread could be reduced or eliminated when a change in the interest rate on the asset does not match a change in the interest rate on the liability;

• mitigate the adverse earnings effects of the shortening or extension of certain assets and liabilities;

• manage embedded options in assets and liabilities; and

• reduce funding costs by combining a derivative with a consolidated obligation, as the cost of a combined funding structure can be lower than the cost of a comparable consolidated obligation.

APPLICATION OF DERIVATIVES

The Bank transacts most of its derivative transactions with large banks and major broker-dealers. Over-the-counter derivative transactions may be either executed directly with a counterparty (uncleared derivatives) or cleared through a Futures Commission Merchant (i.e., clearings agent) with a Derivative Clearinghouse Organization (cleared derivatives). Once a derivative transaction has been accepted for clearing by the Derivative Clearinghouse Organization (Clearinghouse), the derivative transaction is novated and the executing counterparty is replaced with the Clearinghouse. The Bank is not a derivative dealer and does not trade derivatives for a short-term profit.

TYPES OF DERIVATIVES

The Bank may use the following derivative instruments:

• interest rate swaps;

• options;

• swaptions;

• interest rate caps and floors; and

• futures/forwards contracts.

The Bank may have the following types of hedged items:

• investment securities;

• advances;

• mortgage loans;

• consolidated obligations; and

• firm commitments.

For additional information on the Bank’s derivative and hedging accounting policy, see “Note 1 — Summary of Significant Accounting Policies” in the 2017 Form 10-K.

FINANCIAL STATEMENT EFFECT AND ADDITIONAL FINANCIAL INFORMATION

The notional amount of derivatives serves as a factor in determining periodic interest payments and cash flows received and paid. However, the notional amount of derivatives represents neither the actual amounts exchanged nor the overall exposure of the Bank to credit and market risk. The risks of derivatives can be measured meaningfully on a portfolio basis that takes into account the counterparties, the types of derivatives, the items being hedged, and any offsets between the derivatives and the items being hedged.

The following table summarizes the Bank’s notional amount and fair value of derivative instruments and total derivative assets and liabilities. Total derivative assets and liabilities include the effect of netting adjustments and cash collateral. For purposes of this disclosure, the derivative values include the fair value of derivatives and the related accrued interest(dollars in millions):

	June 30, 2018								December 31, 20171
	Notional Amount		Derivative Assets			Derivative  Liabilities			Notional Amount		Derivative Assets		Derivative  Liabilities
Derivatives designated as hedging instruments (fair value hedges)
Interest rate swaps	$	46,828	$	125		$	105		$	52,120	$	77	$	151
Derivatives not designated as hedging instruments (economic hedges)
Interest rate swaps	1,372		29			21			1,407		20		37
Forward settlement agreements (TBAs)	167		—			1			66		—		—
Mortgage delivery commitments	172		—			—			72		—		—
Total derivatives not designated as hedging instruments	1,711		29			22			1,545		20		37
Total derivatives before netting and collateral adjustments	$	48,539	154			127			$	53,665	97		188
Netting adjustments and cash collateral2			(71		)	(125		)			3		(182		)
Total derivative assets and derivative liabilities			$	83		$	2				$	100	$	6

1 To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with netting adjustments and cash collateral.

2 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty. At June 30, 2018 and December 31, 2017, cash collateral posted by the Bank (including accrued interest) was $128 million and $191 million. At June 30, 2018 and December 31, 2017, the Bank received cash collateral (including accrued interest) from clearing agents and/or counterparties of $73 million and $6 million.

The following table summarizes the components of “Net gains (losses) on derivatives and hedging activities” as presented in the Statements of Income (dollars in millions):

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
Derivatives designated as hedging instruments (fair value hedges)
Interest rate swaps	$	7		$	6		$	7		$	10
Derivatives not designated as hedging instruments (economic hedges)
Interest rate swaps	7			(6		)	28			(1		)
Forward settlement agreements (TBAs)	1			—			2			(1		)
Mortgage delivery commitments	—			—			(1		)	1
Net interest settlements	(1		)	(3		)	(3		)	(7		)
Total net gains (losses) related to derivatives not designated as hedging instruments	7			(9		)	26			(8		)
Other1	—			—			1			1
Net gains (losses) on derivatives and hedging activities	$	14		$	(3	)	$	34		$	3

1 Consists of price alignment amount on derivatives for which variation margin is characterized as a daily settled contract.

The following tables summarize, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships, the net fair value hedge ineffectiveness, and the effect of those derivatives on the Bank’s net interest income (dollars in millions):

	For the Three Months Ended June 30, 2018
Hedged Item Type	Net Gains (Losses) on Derivatives		Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness			Effect on Net Interest Income1
Available-for-sale investments	$	55	$	(48	)	$	7		$	(6	)
Advances2	31		(29		)	2			13
Consolidated obligation bonds	—		(2		)	(2		)	(62		)
Total	$	86	$	(79	)	$	7		$	(55	)

	For the Three Months Ended June 30, 2017
Hedged Item Type	Net Gains (Losses) on Derivatives			Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness			Effect on Net Interest Income1
Available-for-sale investments	$	(41	)	$	49		$	8		$	(24	)
Advances2	(25		)	26			1			(21		)
Consolidated obligation bonds	72			(75		)	(3		)	7
Total	$	6		$	—		$	6		$	(38	)

1 Represents the net interest settlements on derivatives in fair value hedge relationships and the amortization of the financing element of off-market derivatives, both of which are included in the interest income or interest expense line item of the respective hedged item type. During the three months ended June 30, 2018 and 2017, the amortization for off-market derivatives totaled less than $1 million and $4 million.

2 Includes net gains (losses) on fair value hedge firm commitments of forward starting advances.

The following tables summarize, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships, the net fair value hedge ineffectiveness, and the effect of those derivatives on the Bank’s net interest income (dollars in millions):

	For the Six Months Ended June 30, 2018
Hedged Item Type	Net Gains (Losses) on Derivatives			Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness		Effect on Net Interest Income1
Available-for-sale investments	$	207		$	(203	)	$	4	$	(19	)
Advances2	156			(154		)	2		12
Consolidated obligation bonds	(154		)	155			1		(94		)
Total	$	209		$	(202	)	$	7	$	(101	)

	For the Six Months Ended June 30, 2017
Hedged Item Type	Net Gains (Losses) on Derivatives			Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness			Effect on Net Interest Income1
Available-for-sale investments	$	(4	)	$	18		$	14		$	(53	)
Advances2	8			(6		)	2			(45		)
Consolidated obligation bonds	22			(28		)	(6		)	26
Total	$	26		$	(16	)	$	10		$	(72	)

1 Represents the net interest settlements on derivatives in fair value hedge relationships and the amortization of the financing element of off-market derivatives, both of which are included in the interest income or interest expense line item of the respective hedged item type. During the six months ended June 30, 2018 and 2017, the amortization for off-market derivatives totaled less than $1 million and $9 million.

2 Includes net gains (losses) on fair value hedge firm commitments of forward starting advances.

MANAGING CREDIT RISK ON DERIVATIVES

The Bank is subject to credit risk due to the risk of nonperformance by counterparties to its derivative contracts. The Bank manages credit risk through credit analyses, collateral requirements, and adherence to the requirements set forth in the Bank’s policies, U.S. Commodity Futures Trading Commission regulations, and Finance Agency regulations.

For uncleared derivatives, the degree of credit risk depends on the extent to which master netting arrangements are included in these contracts to mitigate the risk. The Bank requires collateral agreements on its uncleared derivatives.

Certain of the Bank’s uncleared derivative instruments contain provisions that require the Bank to post additional collateral with its counterparties if there is deterioration in the Bank’s credit rating. If the Bank’s credit rating is lowered by a nationally recognized statistical rating organization (NRSRO), the Bank may be required to deliver additional collateral on uncleared derivative instruments in net liability positions, unless the collateral delivery threshold is set to zero. The aggregate fair value of all uncleared derivative instruments with credit-risk related contingent features that were in a net liability position (before cash collateral and related accrued interest) at June 30, 2018 was $1 million, for which the Bank was not required to post collateral in the normal course of business. If the Bank’s credit rating had been lowered from its current rating to the next lower rating, the Bank would not have been required to deliver additional collateral to its uncleared derivative counterparties at June 30, 2018.

For cleared derivatives, the Clearinghouse is the Bank’s counterparty. The Clearinghouse notifies the clearing agent of the required initial and variation margin and the clearing agent in turn notifies the Bank. The Bank utilizes one Clearinghouse for all cleared derivative transactions, CME Clearing. Variation margin payments with CME Clearing are legally characterized as daily settlement payments, rather than collateral. Initial margin is considered cash collateral. The requirement that the Bank post initial and variation margin through the clearing agent, to the Clearinghouse, exposes the Bank to institutional credit risk if the clearing agent or the Clearinghouse fails to meet its obligations. The use of cleared derivatives is intended to mitigate credit risk exposure because a central counterparty is substituted for individual counterparties and collateral/payments for changes in the fair value of cleared derivatives is posted daily through a clearing agent.

The Clearinghouse determines initial margin requirements and generally credit ratings are not factored into the initial margin. However, clearing agents may require additional initial margin to be posted based on credit considerations, including, but not limited to, credit rating downgrades. The Bank was not required to post additional initial margin by its clearing agents, based on credit considerations at June 30, 2018.

OFFSETTING OF DERIVATIVE ASSETS AND DERIVATIVE LIABILITIES

The Bank presents derivative instruments, related cash collateral, including initial margin, received or pledged, and associated accrued interest on a net basis by clearing agent and/or by counterparty when it has met the netting requirements. Additional information regarding these agreements is provided in “Note 1 — Summary of Significant Accounting Policies” in the 2017 Form 10-K.

The Bank has analyzed the enforceability of offsetting rights incorporated in its cleared derivative transactions and has determined that the exercise of those offsetting rights by a non-defaulting party under these transactions should be upheld under applicable law upon an event of default, including a bankruptcy, insolvency, or similar proceeding involving the Clearinghouse or the clearing agent, or both. Based on this analysis, the Bank presents a net derivative receivable or payable for all of its transactions through a particular clearing agent with a particular Clearinghouse.

The following table presents the fair value of derivative instruments meeting or not meeting the netting requirements and the related collateral received from or pledged to counterparties (dollars in millions):

	June 30, 2018
Derivative Instruments Meeting Netting Requirements	Amount Recognized		Gross Amount of Netting Adjustments and Cash Collateral			Total Derivative Assets and Total Derivative Liabilities
Derivative Assets
Uncleared derivatives	$	151	$	(150	)	$	1
Cleared derivatives	3		79			82
Total	$	154	$	(71	)	$	83
Derivative Liabilities
Uncleared derivatives	$	120	$	(118	)	$	2
Cleared derivatives	7		(7		)	—
Total	$	127	$	(125	)	$	2

	December 31, 2017
Derivative Instruments Meeting Netting Requirements	Amount Recognized1		Gross Amount of Netting Adjustments and Cash Collateral			Total Derivative Assets and Total Derivative Liabilities
Derivative Assets
Uncleared derivatives	$	88	$	(87	)	$	1
Cleared derivatives	9		90			99
Total	$	97	$	3		$	100
Derivative Liabilities
Uncleared derivatives	$	170	$	(164	)	$	6
Cleared derivatives	18		(18		)	—
Total	$	188	$	(182	)	$	6

1    To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with gross amount of netting adjustments and cash collateral.

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Consolidated Obligations

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Consolidated Obligations [Text Block]

Consolidated Obligations

Consolidated obligations consist of bonds and discount notes. The FHLBanks issue consolidated obligations through the Office of Finance as their agent. Bonds are issued primarily to raise intermediate- and long-term funds for the Bank and are not subject to any statutory or regulatory limits on their maturity. Discount notes are issued primarily to raise short-term funds for the Bank and have original maturities of up to one year. Discount notes sell at or below their face amount and are redeemed at par value when they mature.

Although the Bank is primarily liable for the portion of consolidated obligations issued on its behalf, it is also jointly and severally liable with the other FHLBanks for the payment of principal and interest on all FHLBank System consolidated obligations. The Finance Agency, at its discretion, may require any FHLBank to make principal and/or interest payments due on any consolidated obligation, whether or not the primary obligor FHLBank has defaulted on the payment of that consolidated obligation. The Finance Agency has never exercised this discretionary authority. At June 30, 2018 and December 31, 2017, the total par value of outstanding consolidated obligations of the FHLBanks was $1,059.9 billion and $1,034.2 billion.

DISCOUNT NOTES

The following table summarizes the Bank’s discount notes (dollars in millions):

	June 30, 2018					December 31, 2017
	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Par value	$	43,241		1.87	%	$	36,740		1.20	%
Discounts and concessions1	(119		)			(58		)
Total	$	43,122				$	36,682

1 Concessions represent fees paid to dealers in connections with the issuance of certain consolidated obligation discount notes.

BONDS

The following table summarizes the Bank’s bonds outstanding by contractual maturity (dollars in millions):

	June 30, 2018					December 31, 2017
Year of Contractual Maturity	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Due in one year or less	$	57,307		1.87	%	$	50,077		1.32	%
Due after one year through two years	24,341			1.90		32,249			1.43
Due after two years through three years	3,034			2.59		3,177			2.84
Due after three years through four years	7,207			1.71		7,422			1.69
Due after four years through five years	2,124			2.31		1,507			2.42
Thereafter	4,917			3.37		4,752			3.10
Total par value	98,930			1.97	%	99,184			1.54	%
Premiums	168					193
Discounts and concessions1	(52		)			(60		)
Fair value hedging adjustments	(578		)			(424		)
Total	$	98,468				$	98,893

1 Concessions represent fees paid to dealers in connections with the issuance of certain consolidated obligation bonds.

The following table summarizes the Bank’s bonds outstanding by call features (dollars in millions):

	June 30, 2018		December 31, 2017
Non-callable or non-putable	$	94,742	$	97,196
Callable	4,188		1,988
Total par value	$	98,930	$	99,184

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Capital

6 Months Ended

Jun. 30, 2018

Capital [Abstract]

Capital [Text Block]

Capital

CAPITAL STOCK

The Bank’s capital stock has a par value of $100 per share, and all shares are issued, redeemed, and repurchased only at the stated par value. The Bank generally issues a single class of capital stock (Class B stock) and has two subclasses of capital stock: membership and activity-based. Each member must purchase and hold membership capital stock in an amount equal to 0.12 percent of its total assets as of the preceding December 31^st, subject to a cap of $10 million and a floor of $10,000. Each member is also required to purchase activity-based capital stock equal to 4.00 percent of its advances and mortgage loans outstanding in the Bank’s Statements of Condition. All capital stock issued is subject to a five year notice of redemption period.

The capital stock requirements established in the Bank’s Capital Plan are designed so that the Bank can remain adequately capitalized as member activity changes. The Bank’s Board of Directors may make adjustments to the capital stock requirements within ranges established in the Capital Plan.

EXCESS STOCK

Capital stock owned by members in excess of their investment requirement is deemed excess capital stock. Under its Capital Plan, the Bank, at its discretion and upon 15 days’ written notice, may repurchase excess membership capital stock. The Bank, at its discretion, may also repurchase excess activity-based capital stock to the extent that (i) the excess capital stock balance exceeds an operational threshold set forth in the Capital Plan, which is currently set at zero, or (ii) a member submits a notice to redeem all or a portion of the excess activity-based capital stock. At June 30, 2018 and December 31, 2017, the Bank’s excess capital stock outstanding was less than $1 million.

MANDATORILY REDEEMABLE CAPITAL STOCK

The Bank reclassifies capital stock subject to redemption from equity to a liability (mandatorily redeemable capital stock) at the time shares meet the definition of a mandatorily redeemable financial instrument. This occurs after a member provides written notice of intention to withdraw from membership, becomes ineligible for continuing membership, or attains non-member status by merger or consolidation, charter termination, or other involuntary termination from membership. Dividends on mandatorily redeemable capital stock are classified as interest expense in the Statements of Income.

As a result of the final rule on membership issued by the Finance Agency effective February 19, 2016, the eligibility requirements for FHLBank members were changed rendering captive insurance companies ineligible for FHLBank membership. On the effective date of the final rule, the Bank reclassified the total outstanding capital stock held by all of the Bank’s captive insurance companies, to mandatorily redeemable capital stock. In accordance with the final rule, on February 17, 2017, the Bank terminated the membership of all captive insurance company members that were admitted as members after September 12, 2014 (the date the Finance Agency proposed this rule) and repurchased outstanding capital stock to these captive insurance company members in the amount of $148 million. Captive insurance company members that were admitted as members prior to September 12, 2014 will also have their memberships terminated no later than February 19, 2021. At June 30, 2018 and December 31, 2017, the Bank’s mandatorily redeemable capital stock totaled $373 million and $385 million. During the three and sixmonths endedJune 30, 2018, interest expense on mandatorily redeemable capital stock was$5 millionand $9 million. Interest expense on mandatorily redeemable capital stock was$4 millionand$9 millionfor thethreeandsixmonths endedJune 30, 2017.

The following table summarizes changes in mandatorily redeemable capital stock (dollars in millions):

	For the Three Months Ended June 30,
	2018			2017
Balance, beginning of period	$	356		$	494
Capital stock reclassified to (from) mandatorily redeemable capital stock, net	36			18
Net payments for repurchases/redemptions of mandatorily redeemable capital stock	(19		)	(32		)
Balance, end of period	$	373		$	480

The following table summarizes changes in mandatorily redeemable capital stock (dollars in millions):

	For the Six Months Ended June 30,
	2018			2017
Balance, beginning of period	$	385		$	664
Capital stock reclassified to (from) mandatorily redeemable capital stock, net	39			28
Net payments for repurchases/redemptions of mandatorily redeemable capital stock	(51		)	(212		)
Balance, end of period	$	373		$	480

The following table summarizes the Bank’s mandatorily redeemable capital stock by year of contractual redemption (dollars in millions):

Year of Contractual Redemption1	June 30, 2018		December 31, 2017
Due in one year or less	$	—	$	4
Due after one year through two years	2		2
Due after two years through three years	1		—
Due after three years through four years	11		1
Due after four years through five years	26		22
Thereafter2	317		341
Past contractual redemption date due to outstanding activity with the Bank	16		15
Total	$	373	$	385

1 At the Bank’s election, the mandatorily redeemable capital stock may be redeemed prior to the expiration of the five year redemption period that commences on the date of the notice of redemption, or in the case of captive insurance company members, on the date of the membership termination.

2 Represents mandatorily redeemable capital stock resulting from the Finance Agency rule previously discussed that makes captive insurance companies ineligible for FHLBank membership. The related mandatorily redeemable capital stock is not required to be redeemed until five years after the member's termination.

RESTRICTED RETAINED EARNINGS

The Bank entered into a Joint Capital Enhancement Agreement (JCE Agreement) with all of the other FHLBanks in February 2011. The JCE Agreement, as amended, is intended to enhance the capital position of the Bank over time. It requires the Bank to allocate 20 percent of its quarterly net income to a separate restricted retained earnings account until the balance of that account equals at least one percent of its average balance of outstanding consolidated obligations for the previous quarter. The restricted retained earnings are not available to pay dividends. At June 30, 2018 and December 31, 2017, the Bank’s restricted retained earnings account totaled $384 million and $335 million.

ACCUMULATED OTHER COMPREHENSIVE INCOME

The following table summarizes changes in AOCI (dollars in millions):

	Net unrealized gains (losses) on AFS securities (Note 4)			Pension and postretirement benefits			Total AOCI
Balance, March 31, 2017	$	50		$	(3	)	$	47
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	41			—			41
Reclassifications from AOCI to net income
Amortization - pension and postretirement	—			1			1
Net current period other comprehensive income (loss)	41			1			42
Balance, June 30, 2017	$	91		$	(2	)	$	89
Balance, March 31, 2018	$	163		$	(4	)	$	159
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	(17		)	—			(17		)
Net current period other comprehensive income (loss)	(17		)	—			(17		)
Balance, June 30, 2018	$	146		$	(4	)	$	142
Balance, December 31, 2016	$	(14	)	$	(4	)	$	(18	)
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	105			—			105
Reclassifications from AOCI to net income
Amortization - pension and postretirement	—			2			2
Net current period other comprehensive income (loss)	105			2			107
Balance, June 30, 2017	$	91		$	(2	)	$	89
Balance, December 31, 2017	$	118		$	(4	)	$	114
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	28			—			28
Net current period other comprehensive income (loss)	28			—			28
Balance, June 30, 2018	$	146		$	(4	)	$	142

REGULATORY CAPITAL REQUIREMENTS

The Bank is subject to three regulatory capital requirements:

• Risk-based capital. The Bank must maintain at all times permanent capital greater than or equal to the sum of its credit, market, and operations risk capital requirements, all calculated in accordance with Finance Agency regulations.Only permanent capital, defined as Class B stock (including mandatorily redeemable capital stock), and retained earnings can satisfy this risk-based capital requirement.

• Regulatory capital. The Bank is required to maintain a minimum four percent capital-to-asset ratio, which is defined as total regulatory capital divided by total assets. Total regulatory capital includes Class B stock (including mandatorily redeemable capital stock) and retained earnings. It does not include AOCI.

• Leverage capital. The Bank is required to maintain a minimum five percent leverage ratio, which is defined as the sum of permanent capital weighted 1.5 times and nonpermanent capital weighted 1.0 times, divided by total assets. The Bank did not hold any nonpermanent capital at June 30, 2018 and December 31, 2017.

If the Bank’s capital falls below the required levels, the Finance Agency has authority to take actions necessary to return it to levels that it deems to be consistent with safe and sound business operations.

The following table shows the Bank’s compliance with the Finance Agency’s regulatory capital requirements (dollars in millions):

	June 30, 2018						December 31, 2017
	Required			Actual			Required			Actual
Regulatory capital requirements
Risk-based capital	$	1,178		$	7,770		$	1,041		$	7,292
Regulatory capital	$	6,039		$	7,770		$	5,804		$	7,292
Leverage capital	$	7,549		$	11,656		$	7,255		$	10,937
Capital-to-assets ratio	4.00		%	5.15		%	4.00		%	5.03		%
Leverage ratio	5.00		%	7.72		%	5.00		%	7.54		%

XML

Fair Value

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value [Text Block]

Fair Value

Fair value amounts are determined by the Bank using available market information and reflect the Bank’s best judgment of appropriate valuation methods. GAAP defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (i.e., and exit price). The fair value hierarchy requires an entity to maximize the use of significant observable inputs and minimize the use of significant unobservable inputs when measuring fair value. The inputs are evaluated and an overall level for the fair value measurement is determined. This overall level is an indication of market observability of the fair value measurement for the asset or liability.

The fair value hierarchy prioritizes the inputs used to measure fair value into three broad levels:

• Level 1 Inputs. Quoted prices (unadjusted) for identical assets or liabilities in an active market that the Bank can access on the measurement date.

• Level 2 Inputs. Inputs other than quoted prices within Level 1 that are observable inputs for the asset or liability, either directly or indirectly. If the asset or liability has a specified (contractual) term, a Level 2 input must be observable for substantially the full term of the asset or liability. Level 2 inputs include the following: (i) quoted prices for similar assets or liabilities in active markets, (ii) quoted prices for identical or similar assets or liabilities in markets that are not active, (iii) inputs other than quoted prices that are observable for the asset or liability (e.g., interest rates and yield curves that are observable at commonly quoted intervals and implied volatilities, and (iv) market-corroborated inputs.

• Level 3 Inputs. Unobservable inputs for the asset or liability.

The Bank reviews its fair value hierarchy classifications on a quarterly basis. Changes in the observability of the valuation inputs may result in a reclassification of certain assets or liabilities. These reclassifications are reported as transfers in/out as of the beginning of the quarter in which the changes occur. There were no such transfers during the six months ended June 30, 2018 and 2017.

The following table summarizes the carrying value, fair value, and fair value hierarchy of the Bank’s financial instruments at June 30, 2018 (dollars in millions). The Bank records trading securities, AFS securities, derivative assets, derivative liabilities, certain advances, and certain other assets at fair value on a recurring basis, and on occasion certain mortgage loans held for portfolio on a non-recurring basis. The Bank records all other financial assets and liabilities at amortized cost. The fair values do not represent an estimate of the overall market value of the Bank as a going concern, which would take into account future business opportunities and the net profitability of assets and liabilities.

				Fair Value
Financial Instruments	Carrying Value			Level 1			Level 2			Level 3		Netting Adjustments and Cash Collateral1			Total
Assets
Cash and due from banks	$	201		$	201		$	—		$	—	$	—		$	201
Interest-bearing deposits	1			—			1			—		—			1
Securities purchased under agreements to resell	4,900			—			4,900			—		—			4,900
Federal funds sold	4,435			—			4,435			—		—			4,435
Trading securities	937			—			937			—		—			937
Available-for-sale securities	19,451			—			19,451			—		—			19,451
Held-to-maturity securities	3,295			—			3,314			11		—			3,325
Advances	109,963			—			110,031			—		—			110,031
Mortgage loans held for portfolio, net	7,310			—			7,189			63		—			7,252
Accrued interest receivable	305			—			305			—		—			305
Derivative assets, net	83			—			154			—		(71		)	83
Other assets	29			29			—			—		—			29
Liabilities
Deposits	(1,028		)	—			(1,028		)	—		—			(1,028		)
Consolidated obligations
Discount notes	(43,122		)	—			(43,119		)	—		—			(43,119		)
Bonds	(98,468		)	—			(98,539		)	—		—			(98,539		)
Total consolidated obligations	(141,590		)	—			(141,658		)	—		—			(141,658		)
Mandatorily redeemable capital stock	(373		)	(373		)	—			—		—			(373		)
Accrued interest payable	(238		)	—			(238		)	—		—			(238		)
Derivative liabilities, net	(2		)	—			(127		)	—		125			(2		)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty.

The following table summarizes the carrying value, fair value, and fair value hierarchy of the Bank’s financial instruments at December 31, 2017 (dollars in millions):

				Fair Value
Financial Instruments	Carrying Value			Level 1			Level 2			Level 3		Netting Adjustments and Cash Collateral1		Total
Assets
Cash and due from banks	$	503		$	503		$	—		$	—	$	—	$	503
Interest-bearing deposits	1			—			1			—		—		1
Securities purchased under agreements to resell	4,600			—			4,600			—		—		4,600
Federal funds sold	4,250			—			4,250			—		—		4,250
Trading securities	1,177			—			1,177			—		—		1,177
Available-for-sale securities	20,796			—			20,796			—		—		20,796
Held-to-maturity securities	3,628			—			3,674			12		—		3,686
Advances	102,613			—			102,708			—		—		102,708
Mortgage loans held for portfolio, net	7,096			—			7,124			64		—		7,188
Accrued interest receivable	223			—			223			—		—		223
Derivative assets, net	100			—			97			—		3		100
Other assets	28			28			—			—		—		28
Liabilities
Deposits	(1,107		)	—			(1,107		)	—		—		(1,107		)
Borrowings from other FHLBanks	(600		)	—			(600		)	—		—		(600		)
Consolidated obligations
Discount notes	(36,682		)	—			(36,674		)	—		—		(36,674		)
Bonds	(98,893		)	—			(99,150		)	—		—		(99,150		)
Total consolidated obligations	(135,575		)	—			(135,824		)	—		—		(135,824		)
Mandatorily redeemable capital stock	(385		)	(385		)	—			—		—		(385		)
Accrued interest payable	(210		)	—			(210		)	—		—		(210		)
Derivative liabilities, net	(6		)	—			(188		)	—		182		(6		)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty. To conform with current presentation $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with netting adjustments and cash collateral.

SUMMARY OF VALUATION TECHNIQUES AND PRIMARY INPUTS

The valuation techniques and primary inputs used to develop the measurement of fair value for assets and liabilities that are measured at fair value on a recurring or non-recurring basis in the Statements of Condition are outlined below.

Trading and AFS Investment Securities. The Bank’s valuation technique incorporates prices from multiple designated third-party pricing vendors, when available. The pricing vendors generally use various proprietary models to price investment securities. The inputs to those models are derived from various sources including, but not limited to, benchmark securities and yields, reported trades, dealer estimates, issuer spreads, bids, offers, and other market-related data. Since many investment securities do not trade on a daily basis, the pricing vendors use available information, as applicable, such as benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing to determine the prices for individual securities. Each pricing vendor has an established process in place to challenge investment valuations, which facilitates resolution of questionable prices identified by the Bank. Annually, the Bank conducts reviews of its pricing vendors to confirm and further augment its understanding of the vendors’ pricing processes, methodologies, and control procedures for investment securities.

The Bank’s valuation technique for estimating the fair values of its investment securities first requires the establishment of a median price for each security. All prices that are within a specified tolerance threshold of the median price are included in the cluster of prices that are averaged to compute a default price. All prices that are outside the threshold (outliers) are subject to further analysis (including, but not limited to, comparison to prices provided by an additional third-party valuation service, prices for similar securities, and/or non-binding dealer estimates) to determine if an outlier is a better estimate of fair value. If an outlier (or some other price identified in the analysis) is determined to be a better estimate of fair value, then the outlier (or the other price as appropriate) is used as the final price rather than the default price. Alternatively, if the analysis confirms that an outlier (or outliers) is (are) in fact not representative of fair value and the default price is the best estimate, then the default price is used as the final price. In all cases, the final price is used to determine the fair value of the security. In limited instances, when no prices are available from one of the designated pricing services, the Bank obtains prices from dealers.

As of June 30, 2018 and December 31, 2017, multiple prices were received for the majority of the Bank’s trading and AFS investment securities. Based on the Bank’s review of the pricing methods and controls employed by the third-party pricing vendors and the relative lack of dispersion among the vendor prices, the Bank believes its final prices are representative of the prices that would have been received if the assets had been sold at the measurement date (i.e., exit prices) and further, that the fair value measurements are classified appropriately in the fair value hierarchy.

Advances Recorded under the Fair Value Option. The fair value of advances recorded under the fair value option is determined by calculating the present value of the expected future cash flows and includes accrued interest receivable. The discount rates used in these calculations are equivalent to the replacement advance rates for advances with similar terms. In accordance with Finance Agency regulations, advances generally require a prepayment fee sufficient to make the Bank financially indifferent to a borrower’s decision to prepay the advances. Therefore, the fair value of advances assumes no prepayment risk.

The Bank uses the following inputs for measuring the fair value of advances:

• Consolidated Obligation Curve (CO Curve). The Office of Finance constructs a curve, referred to as the CO Curve, using the U.S. Treasury Curve as a base curve which is then adjusted by adding indicative spreads obtained from market-observable sources. These market indications are generally derived from pricing indications from dealers, historical pricing relationships, recent GSE trades, and secondary market activity. The Bank utilizes the CO Curve as its input to fair value for advances because it represents the Bank’s cost of funds and is used to price advances.

• Volatility assumption. Market-based expectations of future interest rate volatility implied from current market prices for similar options.

• Spread assumption. Represents a spread adjustment to the CO Curve.

Impaired Mortgage Loans Held for Portfolio. The fair value of impaired mortgage loans held for portfolio is estimated by obtaining property values from an external pricing vendor. This vendor utilizes multiple pricing models that generally factor in market observable inputs, including actual sales transactions and home price indices. The Bank applies an adjustment to these values to capture certain limitations in the estimation process and takes into consideration estimated selling costs and expected PMI proceeds. In limited instances, the Bank may estimate the fair value of an impaired mortgage loan by calculating the present value of expected future cash flows discounted at the loan’s effective interest rate.  

Derivative Assets and Liabilities. The fair value of derivatives is generally estimated using standard valuation techniques such as discounted cash flow analyses and comparisons to similar instruments, and includes variation margin payments for daily settled contracts. In limited instances, fair value estimates for interest-rate related derivatives may be obtained using an external pricing model that utilizes observable market data. The Bank is subject to credit risk in derivatives transactions due to the potential nonperformance of its derivatives counterparties. The use of cleared derivatives is intended to mitigate credit risk exposure because a central counterparty is substituted for individual counterparties and collateral/payments is posted daily, through a clearing agent, for changes in the fair value of cleared derivatives. To mitigate credit risk on uncleared derivatives, the Bank enters into master netting agreements with its counterparties as well as collateral agreements that provide for the delivery of collateral at specified levels tied to those counterparties’ credit ratings. The Bank has evaluated the potential for the fair value of its derivatives to be affected by counterparty credit risk and its own credit risk and has determined that no adjustments were significant to the overall fair value measurements.

The fair values of the Bank’s derivative assets and derivative liabilities include accrued interest receivable/payable and cash collateral remitted to/received from counterparties. The estimated fair values of the accrued interest receivable/payable and cash collateral approximate their carrying values due to their short-term nature. The fair values of derivatives are netted by clearing agent and/or counterparty if the netting requirements are met. If these netted amounts are positive, they are classified as an asset and, if negative, they are classified as a liability.

The Bank’s discounted cash flow model utilizes market-observable inputs (inputs that are actively quoted and can be validated to external sources). The Bank uses the following inputs for measuring the fair value of interest-related derivatives:

• Discount rate assumption. The Bank utilizes the Overnight-Index Swap (OIS) curve. 

• Forward interest rate assumption. The Bank utilizes the London Interbank Offered Rate (LIBOR) swap curve.

• Volatility assumption. Market-based expectations of future interest rate volatility implied from current market prices for similar options.

For forward settlement agreements (TBAs), the Bank utilizes TBA securities prices that are determined by coupon class and expected term until settlement. For mortgage delivery commitments, the Bank utilizes TBA securities prices adjusted for factors such as credit risk and servicing spreads.

Other Assets. These represent grantor trust assets, which are carried at estimated fair value based on quoted market prices as of the last business day of the reporting period.

Subjectivity of Estimates. Estimates of the fair value of financial assets and liabilities using the methods previously described are highly subjective and require judgments regarding significant matters, such as the amount and timing of future cash flows, prepayment speed assumptions, expected interest rate volatility, possible distributions of future interest rates used to value options, and the selection of discount rates that appropriately reflect market and credit risks. The use of different assumptions could have a material effect on the fair value estimates.

FAIR VALUE ON A RECURRING BASIS

The following table summarizes, for each hierarchy level, the Bank’s assets and liabilities that are measured at fair value in the Statements of Condition atJune 30, 2018(dollars in millions):

Recurring Fair Value Measurements	Level 1		Level 2			Level 3		Netting Adjustments and Cash Collateral1			Total
Assets
Trading securities
U.S. obligations	$	—	$	182		$	—	$	—		$	182
GSE and Tennessee Valley Authority obligations	—		57			—		—			57
Othernon-MBS	—		265			—		—			265
GSE multifamily MBS	—		433			—		—			433
Total trading securities	—		937			—		—			937
Available-for-sale securities
U.S. obligations	—		2,820			—		—			2,820
GSE and Tennessee Valley Authority obligations	—		1,039			—		—			1,039
State or local housing agency obligations	—		906			—		—			906
Other non-MBS	—		272			—		—			272
U.S. obligations single-family MBS	—		4,097			—		—			4,097
GSE single-family MBS	—		885			—		—			885
GSE multifamily MBS	—		9,432			—		—			9,432
Total available-for-sale securities	—		19,451			—		—			19,451
Advances2	—		15			—		—			15
Derivative assets, net
Interest-rate related	—		154			—		(71		)	83
Other assets	29		—			—		—			29
Total recurring assets at fair value	$	29	$	20,557		$	—	$	(71	)	$	20,515
Liabilities
Derivative liabilities, net
Interest-rate related	—		(126		)	—		125			(1		)
Forward settlement agreements (TBAs)	—		(1		)	—		—			(1		)
Total recurring liabilities at fair value	$	—	$	(127	)	$	—	$	125		$	(2	)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty.

2 Represents financial instruments recorded under the fair value option.

The following table summarizes, for each hierarchy level, the Bank’s assets and liabilities that are measured at fair value in the Statements of Condition at December 31, 2017 (dollars in millions):

Recurring Fair Value Measurements	Level 1		Level 2			Level 3		Netting Adjustments and Cash Collateral1		Total
Assets
Trading securities
U.S. obligations	$	—	$	197		$	—	$	—	$	197
GSE and Tennessee Valley Authority obligations	—		260			—		—		260
Othernon-MBS	—		272			—		—		272
GSE multifamily MBS	—		448			—		—		448
Total trading securities	—		1,177			—		—		1,177
Available-for-sale securities
U.S. obligations	—		3,099			—		—		3,099
GSE and Tennessee Valley Authority obligations	—		1,236			—		—		1,236
State or local housing agency obligations	—		934			—		—		934
Other non-MBS	—		278			—		—		278
U.S. obligations single-family MBS	—		3,726			—		—		3,726
GSE single-family MBS	—		988			—		—		988
GSE multifamily MBS	—		10,535			—		—		10,535
Total available-for-sale securities	—		20,796			—		—		20,796
Derivative assets, net
Interest-rate related	—		97			—		3		100
Other assets	28		—			—		—		28
Total recurring assets at fair value	$	28	$	22,070		$	—	$	3	$	22,101
Liabilities
Derivative liabilities, net
Interest-rate related	—		(188		)	—		182		(6		)
Total recurring liabilities at fair value	$	—	$	(188	)	$	—	$	182	$	(6	)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty. To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with netting adjustments and cash collateral.

FAIR VALUE ON A NON-RECURRING BASIS

The Bank measures certain impaired mortgage loans held for portfolio at level 3 fair value on a non-recurring basis. These assets are subject to fair value adjustments in certain circumstances. At June 30, 2018 and December 31, 2017, impaired mortgage loans held for portfolio recorded at fair value as a result of a non-recurring change in fair value were $1 million and $7 million. These fair values were as of the date the fair value adjustment was recorded during the six months ended June 30, 2018 and year-ended December 31, 2017.

FAIR VALUE OPTION

The fair value option provides an irrevocable option to elect fair value as an alternative measurement for selected financial assets, financial liabilities, unrecognized firm commitments, and written loan commitments not previously carried at fair value. It require entities to display the fair value of those assets and liabilities for which it has chosen to use fair value on the face of the Statements of Condition. Fair value is used for both the initial and subsequent measurement of the designated assets, liabilities, and commitments, with the changes in fair value recognized in income.

The Bank elects the fair value option for certain financial instruments when a hedge relationship does not qualify for hedge accounting. These fair value elections are made primarily in an effort to mitigate the potential income statement volatility that can arise when an economic derivative is adjusted for changes in fair value but the related hedged item is not.

For financial instruments recorded under the fair value option, the related contractual interest income and interest expense are recorded as part of net interest income in the Statements of Income. The remaining changes are recorded as “Net gains (losses) on financial instruments held at fair value” in the Statements of Income.

For the three and six months ended June 30, 2018 and 2017, net gains on financial instruments held at fair value were less than $1 million. At June 30, 2018 and December 31, 2017, the Bank determined no credit risk adjustments for nonperformance were necessary to the instruments recorded under the fair value option.

At December 31, 2017, advances recorded under the fair value option were less than $1 million. The following table summarizes the difference between the unpaid principal balance and fair value of outstanding instruments for which the fair value option was elected at June 30, 2018 (dollars in million):

	June 30, 2018
	Unpaid Principal Balance		Fair Value		Fair Value Over (Under) Unpaid Principal
Advances1	$	15	$	15	$	—

1    AtJune 30, 2018 none of the advances were 90 days or more past due or had been placed on non-accrual status.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies [Text Block]

Commitments and Contingencies

Joint and Several Liability. The FHLBanks have joint and several liability for all consolidated obligations issued. Accordingly, if an FHLBank were unable to repay any consolidated obligation for which it is the primary obligor, each of the other FHLBanks could be called upon by the Finance Agency to repay all or part of such obligations. No FHLBank has ever been asked or required to repay the principal or interest on any consolidated obligation on behalf of another FHLBank. AtJune 30, 2018andDecember 31, 2017, the total par value of outstanding consolidated obligations issued on behalf of other FHLBanks for which the Bank is jointly and severally liable was approximately $917.7 billion and $898.3 billion.

The following table summarizes additional off-balance sheet commitments for the Bank (dollars in millions):

	June 30, 2018						December 31, 2017
	Expire within one year		Expire after one year		Total		Total
Standby letters of credit1	$	9,111	$	166	$	9,277	$	8,594
Standby bond purchase agreements	117		587		704		755
Commitments to purchase mortgage loans	172		—		172		72
Commitments to issue bonds	264		—		264		—
Commitments to fund advances	779		1		780		1,138

1 Excludes commitments to issue standby letters of credit of $53 million and $7 million at June 30, 2018 and December 31, 2017.

Standby Letters of Credit. The Bank issues standby letters of credit on behalf of its members to support certain obligations of the members to third-party beneficiaries. These standby letters of credit are subject to the same collateralization and borrowing limits that are applicable to advances. Standby letters of credit may be offered to assist members in facilitating residential housing finance, community lending, and asset-liability management, and to provide liquidity. In particular, members often use standby letters of credit as collateral for deposits from federal and state government agencies. Standby letters of credit are executed with members for a fee. If the Bank is required to make payment for a beneficiary’s draw, the member either reimburses the Bank for the amount drawn or, subject to the Bank’s discretion, the amount drawn may be converted into a collateralized advance to the member. The original terms of standby letters of credit range from less than one month to 13 years, currently no later than 2025. The carrying value of guarantees related to standby letters of credit are recorded in “Other liabilities” in the Statements of Condition and amounted to $2 million and $3 million at June 30, 2018andDecember 31, 2017.

The Bank monitors the creditworthiness of its standby letters of credit based on an evaluation of its borrowers. The Bank has established parameters for the measurement, review, classification, and monitoring of credit risk related to these standby letters of credit. Based on management’s credit analyses and collateral requirements, the Bank does not deem it necessary to have any provision for credit losses on these standby letters of credit. All standby letters of credit are subject to the same collateralization and borrowing limits that apply to advances and are fully collateralized at the time of issuance.

Standby Bond Purchase Agreements. The Bank has entered into standby bond purchase agreements with state housing associates within its district whereby, for a fee, it agrees to serve as a standby liquidity provider if required, to purchase and hold the housing associate’s bonds until the designated marketing agent can find a suitable investor or the housing associate repurchases the bonds according to a schedule established by the agreement. Each standby bond purchase agreement includes the provisions under which the Bank would be required to purchase the bonds. At June 30, 2018, the Bank had standby bond purchase agreements with seven housing associates. The standby bond purchase commitments entered into by the Bank have original expiration periods of up to seven years, currently no later than 2024. During both the six months ended June 30, 2018 and 2017, the Bank was not required to purchase any bonds under these agreements.

Commitments to Purchase Mortgage Loans. The Bank enters into commitments that unconditionally obligate it to purchase mortgage loans from its members. Commitments are generally for periods not to exceed 45 days. These commitments are considered derivatives and their estimated fair value at June 30, 2018 and December 31, 2017 is reported in “Note 10 — Derivatives and Hedging Activities” as mortgage delivery commitments.

Commitments to Issue Bonds. At June 30, 2018, the Bank had commitments to issue $264 million of consolidated obligation bonds. At December 31, 2017, the Bank had no commitments to issue consolidated obligation bonds.

Commitments to Fund Advances. The Bank enters into commitments that legally bind it to fund additional advances up to 24 months in the future. At June 30, 2018 and December 31, 2017, the Bank had commitments to fund advances of $0.8 billion and $1.1 billion.

Other Commitments. For each MPF master commitment, the Bank’s potential loss exposure prior to the PFI’s credit enhancement obligation is estimated and tracked in a memorandum account called the FLA. For absorbing certain losses in excess of the FLA, PFIs are paid a credit enhancement fee, a portion of which may be performance-based. To the extent the Bank experiences losses under the FLA, it may be able to recapture performance-based credit enhancement fees paid to the PFI to offset these losses. The FLA balance for all MPF master commitments with a PFI credit enhancement obligation was $108 million and $104 million at June 30, 2018 and December 31, 2017.

Legal Proceedings. As a result of the merger with the Federal Home Loan Bank of Seattle (Merger), the Bank has been involved in a number of legal proceedings initiated by the Seattle Bank against various entities relating to its purchases and subsequent impairment of certain private-label MBS. Of the 11 cases initially filed, one has been dismissed, two have been settled in part and dismissed in part, and eight have been settled. The Bank appealed the one complete dismissal and two partial dismissals covering the claims related to five certificates across three different cases. The appellate court affirmed the dismissal of the claims related to four certificates in December 2017 and affirmed the dismissal of the remaining certificate in May 2018. In January 2018, the Bank filed petitions for discretionary review of the appellate court’s rulings in December related to four of the certificates with the Washington Supreme Court. On May 3, 2018, the Court granted those petitions. The aggregate consideration paid for these four certificates is $567 million. Oral arguments have been scheduled for October 9, 2018. In June 2018, the Bank filed a petition for discretionary review of the appellate court’s ruling in May on the fifth certificate. The aggregate consideration paid for that one certificate is $200 million. The Washington Supreme Court has not yet acted on that petition. Other than the private-label MBS litigation, the Bank does not believe any legal proceedings to which it is a party could have a material impact on its financial condition, results of operations, or cash flows.

Litigation settlement gains are considered realized and recorded when the Bank receives cash or assets that are readily convertible to known amounts of cash or claims to cash. In addition, litigation settlement gains are considered realizable and recorded when the Bank enters into a signed agreement that is not subject to appeal, where the counterparty has the ability to pay, and the amount to be received can be reasonably estimated. Prior to being realized or realizable, the Bank considers potential litigation settlement gains to be gain contingencies, and therefore they are not recorded in the Statements of Income.

The Bank records legal expenses related to litigation settlements as incurred in other expenses in the Statements of Income with the exception of certain legal expenses related to litigation settlement awards that are contingent based fees for the attorneys representing the Bank. The Bank incurs and recognizes these contingent based legal fees only when litigation settlement awards are realized, at which time these fees are netted against the gains recognized on the litigation settlement.  During the three months ended June 30, 2018 and 2017, and during the six months ended June 30, 2018, the Bank did not recognize net gains on private-label MBS litigation settlements. During the six months ended June 30, 2017, the Bank recognized $21 million in net gains on litigation settlements through other income (loss), due to the settlement of one of the Bank’s private-label MBS claims.

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Activities with Stockholders

6 Months Ended

Jun. 30, 2018

Related Party Transactions [Abstract]

Activities with Stockholders [Text Block]

Activities with Stockholders

The Bank is a cooperative. This means the Bank is owned by its customers, whom the Bank calls members. As a condition of membership in the Bank, all members must purchase and maintain membership capital stock based on a percentage of their total assets, subject to a minimum and maximum amount, as of the preceding December 31^st. Each member is also required to purchase and maintain activity-based capital stock to support certain business activities with the Bank.

TRANSACTIONS WITH DIRECTORS’ FINANCIAL INSTITUTIONS

In the normal course of business, the Bank extends credit to its members whose directors and officers serve as Bank directors (Directors’ Financial Institutions). Finance Agency regulations require that transactions with Directors’ Financial Institutions be made on the same terms and conditions as those with any other member.

The following table summarizes the Bank’s outstanding transactions with Directors’ Financial Institutions (dollars in millions):

	June 30, 2018			December 31, 2017
	Amount		% of Total	Amount		% of Total
Advances	$	5,134	5	$	6,036	6
Mortgage loans	86		1	68		1
Deposits	11		1	39		4
Capital stock	256		4	297		5

BUSINESS CONCENTRATIONS

The Bank considers itself to have business concentrations with stockholders owning 10 percent or more of its total capital stock outstanding (including mandatorily redeemable capital stock). At June 30, 2018, the Bank had the following business concentrations with stockholders (dollars in millions):

	Capital Stock					Mortgage		Interest
Stockholder	Amount		% of Total1	Advances		Loans4		Income2
Wells Fargo Bank, N.A.	$	2,052	35	$	51,025	$	27	$	550
Superior Guaranty Insurance Company3	19		—	—		463		—
Total	$	2,071	35	$	51,025	$	490	$	550

1 Pursuant to applicable Finance Agency regulations, the Bank’s voting structure limits the voting rights of these stockholders and other members holding a significant amount of the Bank’s capital stock.

2 Represents interest income earned on advances during the six months ended June 30, 2018. Interest income on mortgage loans is excluded from this table as this interest relates to the borrower, not to the stockholder.

3 Superior Guaranty Insurance Company is an affiliate of Wells Fargo Bank, N.A.

4 PFI rights and obligations associated with MPP mortgage loans of $27 million were transferred from Wells Fargo Trust Company, N.A. (formerly Wells Fargo Bank Northwest N.A.) to Wells Fargo Bank, N.A. during the three months ended June 30, 2018.

At December 31, 2017, the Bank had the following business concentrations with stockholders (dollars in millions):

	Capital Stock					Mortgage		Interest
Stockholder	Amount		% of Total1	Advances		Loans		Income2
Wells Fargo Bank, N.A.	$	1,843	34	$	45,825	$	—	$	834
Superior Guaranty Insurance Company3	22		—	—		520		—
Wells Fargo Bank Northwest N.A.3	1		—	—		30		—
Total	$	1,866	34	$	45,825	$	550	$	834

1 Pursuant to applicable Finance Agency regulations, the Bank’s voting structure limits the voting rights of these stockholders and other members holding a significant amount of the Bank’s capital stock.

2 Represents interest income earned on advances during the year ended December 31, 2017. Interest income on mortgage loans is excluded from this table as this interest relates to the borrower, not to the stockholder.

3 Superior Guaranty Insurance Company and Wells Fargo Bank Northwest, N.A. were affiliates of Wells Fargo Bank, N.A at December 31, 2017.

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Activities with Other FHLBanks

6 Months Ended

Jun. 30, 2018

Activities with Other FHLBanks [Abstract]

Activities with Other FHLBanks [Text Block]

Activities with Other FHLBanks

Overnight Funds. The Bank may lend or borrow unsecured overnight funds to or from other FHLBanks. All such transactions are at current market rates. The following table summarizes loan activity to other FHLBanks during the six months ended June 30, 2018 and 2017 (dollars in millions):

Other FHLBank	Beginning Balance		Loans		Principal Repayment			Ending Balance
2018
Boston	$	—	$	800	$	(800	)	$	—
San Francisco	—		300		(300		)	—
Dallas	—		500		(500		)	—
	$	—	$	1,600	$	(1,600	)	$	—
2017
San Francisco	$	200	$	—	$	(200	)	$	—

During the six months ended June 30, 2017, the Bank did not borrow funds from other FHLBanks. The following table summarizes borrowing activity from other FHLBanks during the six months ended June 30, 2018 (dollars in millions):

Other FHLBank	Beginning Balance		Borrowing		Principal Payment			Ending Balance
2018
Atlanta	$	200	$	—	$	(200	)	$	—
Boston	400		—		(400		)	—
	$	600	$	—	$	(600	)	$	—

At June 30, 2018 and 2017, none of the previous transactions were outstanding on the Bank’s Statements of Condition. The interest income and expense related to this activity were immaterial.

Advance Transfers. The Bank may purchase or sell advances from/to other FHLBanks. These transfers are accounted for in the same manner as an advances origination with a member bank. During the six months ended June 30, 2017, a member of the Federal Home Loan Bank of Chicago (Chicago Bank) re-designated its charter, and concurrently transferred its Federal Home Loan Bank membership from the Chicago Bank to the Des Moines Bank. In conjunction with this transfer and at request of the member, the Bank purchased $37 million of par value advances outstanding to this member from the Chicago Bank and recognized related premiums of $1 million. There were no advance transfers during the six months ended June 30, 2018.

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Subsequent Events

6 Months Ended

Jun. 30, 2018

Subsequent Events [Abstract]

Subsequent Events [Text Block]

Subsequent Events

Subsequent events have been evaluated from July 1, 2018, through the time of the Form 10-Q filing with the Securities and Exchange Commission. No material subsequent events requiring disclosure were identified.

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Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Basis of Accounting, Policy [Policy Text Block]

The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information.

New Accounting Pronouncements, Policy [Policy Text Block]

Recently Adopted and Issued Accounting Guidance

ADOPTED ACCOUNTING GUIDANCE

Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07)

On March 10, 2017, the FASB issued amended guidance that requires an employer to disaggregate the service cost component from the other components of net periodic pension cost and net periodic postretirement benefit cost (net benefit cost). The amendments also provide explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement and allow only the service cost component of net benefit cost to be eligible for capitalization. This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018 and was adopted retrospectively. The adoption of this guidance resulted in a reclassification of other net benefit costs from “Compensation and Benefits” to “Other Expense, Net” in the Bank’s Statements of Income. The adoption of this guidance did not have a material effect on the Bank’s financial condition, result of operations, or cash flows.

Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15)

On August 26, 2016, the FASB issued amendments to clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. This guidance is intended to reduce existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018 and was adopted retrospectively. The adoption of this guidance did not have a direct effect on the Bank’s financial condition, results of operations, or cash flows. However, the Bank did revise its previously reported supplemental interest paid disclosure to align with the clarified accounting guidance.

Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01)

On January 5, 2016, the FASB issued amended guidance on certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This guidance includes, but is not limited to, the following:

• Requires equity investments (with certain exceptions) to be measured at fair value with changes in fair value recognized in income.

• Requires an entity to present separately in other comprehensive income (OCI) the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments.

• Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the statements of condition or the accompanying notes to the financial statements.

• Eliminates the requirement for public entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the statements of condition.

This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018 and was adopted using the modified retrospective approach. The adoption of this guidance affected the Bank’s fair value disclosures. However, the guidance did not have any effect on the Bank’s financial condition, results of operations, or cash flows.

Revenue from Contracts with Customers (ASU 2014-09)

On May 28, 2014, the FASB issued guidance on revenue from contracts with customers. This guidance outlines a single comprehensive model for recognizing revenue arising from contracts with customers and supersedes most current revenue recognition guidance. In addition, this guidance amends the existing requirements for the recognition of a gain or loss on the transfer of non-financial assets that are not in a contract with a customer. This guidance applies to all contracts with customers except those that are within the scope of certain other standards, such as financial instruments, certain guarantees, insurance contracts, and lease contracts. The guidance provides entities with the option of using either of the following adoption methods: a full retrospective method, retrospectively to each prior reporting period presented; or a modified retrospective method, retrospectively with the cumulative effect of initially applying this guidance recognized at the date of initial application.

On August 12, 2015, the FASB issued an amendment to defer the effective date of this guidance issued in May 2014 by one year. In 2016, the FASB issued additional amendments to clarify certain aspects of the new revenue guidance. However, these amendments did not change the core principle in the new revenue standard.

This guidance became effective for the Bank for the interim and annual periods beginning on January 1, 2018, and was adopted retrospectively. Given that the majority of the Bank’s financial instruments and other contractual rights that generate revenue are covered by other U.S. GAAP, the adoption of this guidance did not have a material effect on the Bank’s financial condition, results of operations, and cash flows.

ISSUED ACCOUNTING GUIDANCE

Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12)

On August 28, 2017, the FASB issued amended guidance to improve the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements. This guidance requires that, for fair value hedges, the entire change in the fair value of the hedging instrument included in the assessment of hedge effectiveness be presented in the same income statement line that is used to present the earnings effect of the hedged item. For cash flow hedges, the entire change in the fair value of the hedging instrument included in the assessment of hedge effectiveness must be recorded in OCI. In addition, the amendments include certain targeted improvements to the assessment of hedge effectiveness and permit, among other things, the following:

• Measurement of the change in fair value of the hedged item on the basis of the benchmark rate component of the contractual coupon cash flows determined at hedge inception.

• Measurement of the hedged item in a partial-term fair value hedge of interest-rate risk by assuming the hedged item has a term that reflects only the designated cash flows being hedged.

• Consideration only of how changes in the benchmark interest rate affect a decision to settle a prepayable instrument before its scheduled maturity in calculating the change in the fair value of the hedged item attributable to interest-rate risk.

• For a cash flow hedge of interest-rate risk of a variable-rate financial instrument, an entity could designate as the hedged risk the variability in cash flows attributable to the contractually specified interest-rate.

This guidance becomes effective for the Bank for the interim and annual periods beginning on January 1, 2019, and early adoption is permitted. For all cash flow hedges existing on the date of adoption, this guidance should be applied through a cumulative-effect adjustment to accumulated other comprehensive income (AOCI) with a corresponding adjustment to retained earnings as of the beginning of the year of adoption. The amended presentation and disclosure guidance is required only prospectively. The Bank does not intend to adopt this guidance early. The Bank is in the process of evaluating this guidance, and its effect on the Bank’s financial condition, results of operations, and cash flows has not yet been determined.

Premium Amortization on Purchased Callable Debt Securities (ASU 2017-08)

On March 30, 2017, the FASB issued guidance to shorten the amortization period for certain purchased callable debt securities held at a premium. Specifically, this guidance requires the premium to be amortized to the earliest call date. This guidance does not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. This guidance is effective for the Bank for the interim and annual periods beginning on January 1, 2019, and early adoption is permitted. This guidance should be applied using a modified retrospective method through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Bank does not intend to adopt this guidance early. The Bank has evaluated this guidance and its effect on the Bank’s financial condition, results of operations, and cash flows is not expected to be material.

Measurement of Credit Losses on Financial Instruments (ASU 2016-13)

On June 16, 2016, the FASB issued amended guidance for the accounting of credit losses on financial instruments. The amendments require entities to measure expected credit losses based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The new guidance requires a financial asset, or a group of financial assets, measured at amortized cost to be presented at the net amount expected to be collected. The guidance also requires, among other things, the following:

• The statement of income to reflect the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period.

• Entities to determine the allowance for credit losses for purchased financial assets with a more-than-insignificant amount of credit deterioration since origination (PCD) that are measured at amortized cost in a similar manner to other financial assets measured at amortized cost. The initial allowance for credit losses is required to be added to the purchase price of the assets acquired.

• Entities to record credit losses relating to available-for-sale (AFS) debt securities through an allowance for credit losses. The amendments limit the allowance for credit losses to the amount by which fair value is below amortized cost.

• Public entities to further disaggregate the current disclosure of credit quality indicators in relation to the amortized cost of financing receivables by the year of origination (i.e., vintage).

This guidance is effective for the Bank for the interim and annual periods beginning on January 1, 2020. Early application is permitted as of the interim and annual reporting periods beginning after December 15, 2018. This guidance should be applied using a modified-retrospective approach, through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. In addition, entities are required to use a prospective transition approach for PCD assets upon adoption and for debt securities for which an other-than-temporary impairment had been recognized before the effective date. The Bank does not intend to adopt the new guidance early. While the Bank is in the process of evaluating this guidance, the Bank expects the adoption of the guidance may result in an increase in the allowance for credit losses and corresponding expense, including an allowance for debt securities, given the requirement to assess losses for the entire estimated life of the financial asset. The effect on the Bank’s financial condition, results of operations, and cash flows will depend upon the composition of financial assets held by the Bank at the adoption date as well as the economic conditions and forecasts at that time.

Leases (ASU 2016-02)

On February 25, 2016, the FASB issued guidance which requires recognition of lease assets and lease liabilities on the statement of condition and disclosure of key information about leasing arrangements. Specifically, this guidance requires a lessee, of operating or finance leases, to recognize on the statement of condition a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election not to recognize lease assets and lease liabilities. Under previous GAAP, a lessee was not required to recognize lease assets and lease liabilities arising from operating leases on the statement of condition. While this guidance does not fundamentally change lessor accounting, some changes have been made to align that guidance with the lessee guidance and other areas within GAAP.

This guidance becomes effective for the Bank for the interim and annual periods beginning on January 1, 2019, and early application is permitted. In July 2018, the FASB issued amendments that, among other things, provide entities with an additional transition method to adopt the guidance. The new transition method allows entities an option to recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Bank does not intend to adopt this new guidance early. Upon adoption, the Bank expects to report higher assets and liabilities as a result of recording right-of-use assets and lease liabilities on its statements of condition. The Bank is in the process of evaluating this guidance, and its effect on the Bank’s financial condition, results of operations, and cash flows has not yet been determined.

Other Than Temporary Impairment, Policy [Policy Text Block]

The Bank evaluates its individual AFS and HTM securities in an unrealized loss position for other-than-temporary impairment (OTTI) on a quarterly basis. As part of its evaluation of securities for OTTI, the Bank considers its intent to sell each debt security and whether it is more likely than not that it will be required to sell the security before its anticipated recovery. If either of these conditions is met, the Bank will recognize an OTTI charge to earnings equal to the entire difference between the security’s amortized cost basis and its fair value at the reporting date. For securities in an unrealized loss position that meet neither of these conditions, the Bank performs analyses to determine if any of these securities are other-than-temporarily impaired.

Advance Prepayment Fees, Policy [Policy Text Block]

The Bank generally charges a prepayment fee for advances that a borrower elects to terminate prior to the stated maturity or outside of a predetermined call or put date. The fees charged are priced to make the Bank financially indifferent to the prepayment of the advance. For certain advances with symmetrical prepayment features, the Bank may charge the borrower a prepayment fee or pay the borrower a prepayment credit, depending on certain circumstances, such as movements in interest rates, when the advance is prepaid. Prepayment fees and credits are recorded net of fair value hedging adjustments in advance income in the Statements of Income.

Loan and leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]

The Bank utilizes an allowance for credit losses to reserve for estimated losses in its conventional MPF and MPP mortgage loan portfolios at the balance sheet date. The measurement of the Bank’s MPF and MPP allowance for credit losses is determined by the following:

• reviewing similar conventional mortgage loans for impairment on a collective basis. This evaluation is primarily based on the following factors: (i) current loan delinquencies, (ii) loans migrating to collateral-dependent status, and (iii) actual historical loss severities;

• reviewing conventional mortgage loans for impairment on an individual basis; and

• estimating additional credit losses in the conventional mortgage loan portfolio. These losses result from other factors that may not be captured in the methodology previously described at the balance sheet date, which include but are not limited to certain quantifiable economic factors, such as unemployment rates and home prices impacting housing markets.

Impairment Financing Receivable, Policy [Policy Text Block]

As previously described, the Bank evaluates certain conventional mortgage loans for impairment individually. A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect all amounts due according to the contractual terms of the loan agreement.

Derivatives, Offsetting Fair Value Amounts, Policy [Policy Text Block]

The Bank presents derivative instruments, related cash collateral, including initial margin, received or pledged, and associated accrued interest on a net basis by clearing agent and/or by counterparty when it has met the netting requirements. Additional information regarding these agreements is provided in “Note 1 — Summary of Significant Accounting Policies” in the 2017 Form 10-K.

The Bank has analyzed the enforceability of offsetting rights incorporated in its cleared derivative transactions and has determined that the exercise of those offsetting rights by a non-defaulting party under these transactions should be upheld under applicable law upon an event of default, including a bankruptcy, insolvency, or similar proceeding involving the Clearinghouse or the clearing agent, or both. Based on this analysis, the Bank presents a net derivative receivable or payable for all of its transactions through a particular clearing agent with a particular Clearinghouse.

Shares Subject to Mandatory Redemption, Changes in Redemption Value, Policy [Policy Text Block]

The Bank reclassifies capital stock subject to redemption from equity to a liability (mandatorily redeemable capital stock) at the time shares meet the definition of a mandatorily redeemable financial instrument. This occurs after a member provides written notice of intention to withdraw from membership, becomes ineligible for continuing membership, or attains non-member status by merger or consolidation, charter termination, or other involuntary termination from membership. Dividends on mandatorily redeemable capital stock are classified as interest expense in the Statements of Income.

Restricted Retained Earnings, Policy [Policy Text Block]

The Bank entered into a Joint Capital Enhancement Agreement (JCE Agreement) with all of the other FHLBanks in February 2011. The JCE Agreement, as amended, is intended to enhance the capital position of the Bank over time. It requires the Bank to allocate 20 percent of its quarterly net income to a separate restricted retained earnings account until the balance of that account equals at least one percent of its average balance of outstanding consolidated obligations for the previous quarter. The restricted retained earnings are not available to pay dividends.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair value amounts are determined by the Bank using available market information and reflect the Bank’s best judgment of appropriate valuation methods. GAAP defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (i.e., and exit price). The fair value hierarchy requires an entity to maximize the use of significant observable inputs and minimize the use of significant unobservable inputs when measuring fair value. The inputs are evaluated and an overall level for the fair value measurement is determined. This overall level is an indication of market observability of the fair value measurement for the asset or liability.

The fair value hierarchy prioritizes the inputs used to measure fair value into three broad levels:

• Level 1 Inputs. Quoted prices (unadjusted) for identical assets or liabilities in an active market that the Bank can access on the measurement date.

• Level 2 Inputs. Inputs other than quoted prices within Level 1 that are observable inputs for the asset or liability, either directly or indirectly. If the asset or liability has a specified (contractual) term, a Level 2 input must be observable for substantially the full term of the asset or liability. Level 2 inputs include the following: (i) quoted prices for similar assets or liabilities in active markets, (ii) quoted prices for identical or similar assets or liabilities in markets that are not active, (iii) inputs other than quoted prices that are observable for the asset or liability (e.g., interest rates and yield curves that are observable at commonly quoted intervals and implied volatilities, and (iv) market-corroborated inputs.

• Level 3 Inputs. Unobservable inputs for the asset or liability.

The Bank reviews its fair value hierarchy classifications on a quarterly basis. Changes in the observability of the valuation inputs may result in a reclassification of certain assets or liabilities. These reclassifications are reported as transfers in/out as of the beginning of the quarter in which the changes occur.

Commitments and Contingencies, Policy [Policy Text Block]

Litigation settlement gains are considered realized and recorded when the Bank receives cash or assets that are readily convertible to known amounts of cash or claims to cash. In addition, litigation settlement gains are considered realizable and recorded when the Bank enters into a signed agreement that is not subject to appeal, where the counterparty has the ability to pay, and the amount to be received can be reasonably estimated. Prior to being realized or realizable, the Bank considers potential litigation settlement gains to be gain contingencies, and therefore they are not recorded in the Statements of Income.

The Bank records legal expenses related to litigation settlements as incurred in other expenses in the Statements of Income with the exception of certain legal expenses related to litigation settlement awards that are contingent based fees for the attorneys representing the Bank. The Bank incurs and recognizes these contingent based legal fees only when litigation settlement awards are realized, at which time these fees are netted against the gains recognized on the litigation settlement. 

Reclassification, Policy [Policy Text Block]

Reclassifications

Certain amounts in the Bank’s2017financial statements and footnotes have been reclassified to conform to the presentation as ofJune 30, 2018. In particular, due to the change in current presentation, variation margin on cleared derivatives has been allocated to the individual derivative instruments. Previously, this amount was included as a component of netting adjustments and cash collateral.

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Trading Securities (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Trading Securities and Other Trading Assets [Line Items]

Trading Securities [Table Text Block]

Trading securities were as follows (dollars in millions):

	June 30, 2018		December 31, 2017
Non-mortgage-backed securities
U.S. obligations1	$	182	$	197
GSE and Tennessee Valley Authority obligations	57		260
Other2	265		272
Total non-mortgage-backed securities	504		729
Mortgage-backed securities
GSE multifamily	433		448
Total fair value	$	937	$	1,177

1 Represents investment securities backed by the full faith and credit of the U.S. Government.

2 Consists of taxable municipal bonds.

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Available-for-Sale Securities (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Available-for-sale Securities [Line Items]

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

AFS securities were as follows (dollars in millions):

	June 30, 2018
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
U.S. obligations2	$	2,808	$	13	$	(1	)	$	2,820
GSE and Tennessee Valley Authority obligations	1,001		38		—			1,039
State or local housing agency obligations	908		—		(2		)	906
Other3	260		12		—			272
Total non-mortgage-backed securities	4,977		63		(3		)	5,037
Mortgage-backed securities
U.S. obligations single-family2	4,065		33		(1		)	4,097
GSE single-family	883		7		(5		)	885
GSE multifamily	9,380		59		(7		)	9,432
Total mortgage-backed securities	14,328		99		(13		)	14,414
Total	$	19,305	$	162	$	(16	)	$	19,451

	December 31, 2017
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
U.S. obligations2	$	3,096	$	8	$	(5	)	$	3,099
GSE and Tennessee Valley Authority obligations	1,197		39		—			1,236
State or local housing agency obligations	935		—		(1		)	934
Other3	269		9		—			278
Total non-mortgage-backed securities	5,497		56		(6		)	5,547
Mortgage-backed securities
U.S. obligations single-family2	3,716		11		(1		)	3,726
GSE single-family	983		7		(2		)	988
GSE multifamily	10,482		57		(4		)	10,535
Total mortgage-backed securities	15,181		75		(7		)	15,249
Total	$	20,678	$	131	$	(13	)	$	20,796

1 Amortized cost includes adjustments made to the cost basis of an investment for accretion, amortization, and/or fair value hedge accounting adjustments.

2 Represents investment securities backed by the full faith and credit of the U.S. Government.

3 Consists of taxable municipal bonds and/or Private Export Funding Corporation (PEFCO) bonds.

Available-for-sale Securities [Member]

Schedule of Available-for-sale Securities [Line Items]

Schedule of Unrealized Loss on Investments [ Table Text Block]

The following tables summarize AFS securities with unrealized losses by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in millions). In cases where the gross unrealized losses for an investment category are less than $1 million, the losses are not reported.

	June 30, 2018
	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
U.S. obligations1	$	316	$	—		$	338	$	(1	)	$	654	$	(1	)
State or local housing agency obligations	13		—			594		(2		)	607		(2		)
Total non-mortgage-backed securities	329		—			932		(3		)	1,261		(3		)
Mortgage-backed securities
U.S. obligations single-family1	497		(1		)	—		—			497		(1		)
GSE single-family	297		(5		)	48		—			345		(5		)
GSE multifamily	2,653		(4		)	859		(3		)	3,512		(7		)
Total mortgage-backed securities	3,447		(10		)	907		(3		)	4,354		(13		)
Total	$	3,776	$	(10	)	$	1,839	$	(6	)	$	5,615	$	(16	)

	December 31, 2017
	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
U.S. obligations1	$	29	$	—		$	1,783	$	(5	)	$	1,812	$	(5	)
State or local housing agency obligations	6		—			655		(1		)	661		(1		)
Total non-mortgage-backed securities	35		—			2,438		(6		)	2,473		(6		)
Mortgage-backed securities
U.S. obligations single-family1	111		—			887		(1		)	998		(1		)
GSE single-family	222		(2		)	53		—			275		(2		)
GSE multifamily	224		(1		)	1,756		(3		)	1,980		(4		)
Total mortgage-backed securities	557		(3		)	2,696		(4		)	3,253		(7		)
Total	$	592	$	(3	)	$	5,134	$	(10	)	$	5,726	$	(13	)

1 Represents investment securities backed by the full faith and credit of the U.S. Government.

Investments Classified by Contractual Maturity Date [Table Text Block]

The following table summarizes AFS securities by contractual maturity. Expected maturities of some securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment fees (dollars in millions):

	June 30, 2018				December 31, 2017
Year of Contractual Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Non-mortgage-backed securities
Due in one year or less	$	26	$	26	$	158	$	159
Due after one year through five years	969		976		750		755
Due after five years through ten years	3,160		3,181		3,574		3,583
Due after ten years	822		854		1,015		1,050
Total non-mortgage-backed securities	4,977		5,037		5,497		5,547
Mortgage-backed securities	14,328		14,414		15,181		15,249
Total	$	19,305	$	19,451	$	20,678	$	20,796

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Held-to-Maturity Securities (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Held-to-maturity Securities [Line Items]

Held-to-maturity Securities [Table Text Block]

Held-to-maturity (HTM) securities were as follows (dollars in millions):

	June 30, 2018
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
GSE and Tennessee Valley Authority obligations	$	391	$	49	$	(2	)	$	438
State or local housing agency obligations	427		1		(2		)	426
Total non-mortgage-backed securities	818		50		(4		)	864
Mortgage-backed securities
U.S. obligations single-family2	11		—		—			11
U.S. obligations commercial2	2		—		—			2
GSE single-family	2,453		8		(24		)	2,437
Private-label residential	11		—		—			11
Total mortgage-backed securities	2,477		8		(24		)	2,461
Total	$	3,295	$	58	$	(28	)	$	3,325

	December 31, 2017
	Amortized Cost1		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-mortgage-backed securities
GSE and Tennessee Valley Authority obligations	$	393	$	65	$	—		$	458
State or local housing agency obligations	454		2		(2		)	454
Total non-mortgage-backed securities	847		67		(2		)	912
Mortgage-backed securities
U.S. obligations single-family2	15		—		—			15
U.S. obligations commercial2	2		—		—			2
GSE single-family	2,752		7		(14		)	2,745
Private-label residential	12		—		—			12
Total mortgage-backed securities	2,781		7		(14		)	2,774
Total	$	3,628	$	74	$	(16	)	$	3,686

1 Amortized cost includes adjustments made to the cost basis of an investment for accretion or amortization.

2 Represents investment securities backed by the full faith and credit of the U.S. Government.

Held-to-maturity Securities [Member]

Schedule of Held-to-maturity Securities [Line Items]

Schedule of Unrealized Loss on Investments [ Table Text Block]

The following tables summarize HTM securities with unrealized losses by major security type and the length of time that individual securities have been in a continuous unrealized loss position (dollars in millions). In cases where the gross unrealized losses for an investment category are less than $1 million, the losses are not reported.

	June 30, 2018
	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
GSE and Tennessee Valley Authority obligations	$	90	$	(2	)	$	—	$	—		$	90	$	(2	)
State or local housing agency obligations	$	17	$	—		$	162	$	(2	)	$	179	$	(2	)
Total non-mortgage-backed securities	107		(2		)	162		(2		)	269		(4		)
Mortgage-backed securities
U.S. obligations single-family1	—		—			5		—			5		—
U.S. obligations commercial1	1		—			1		—			2		—
GSE single-family	12		—			1,200		(24		)	1,212		(24		)
Private-label residential	—		—			7		—			7		—
Total mortgage-backed securities	13		—			1,213		(24		)	1,226		(24		)
Total	$	120	$	(2	)	$	1,375	$	(26	)	$	1,495	$	(28	)

	December 31, 2017
	Less than 12 Months				12 Months or More					Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-mortgage-backed securities
State or local housing agency obligations	$	2	$	—	$	168	$	(2	)	$	170	$	(2	)
Total non-mortgage-backed securities	2		—		168		(2		)	170		(2		)
Mortgage-backed securities
U.S. obligations single-family1	7		—		1		—			8		—
U.S. obligations commercial1	1		—		1		—			2		—
GSE single-family	42		—		1,427		(14		)	1,469		(14		)
Private-label residential	—		—		8		—			8		—
Total mortgage-backed securities	50		—		1,437		(14		)	1,487		(14		)
Total	$	52	$	—	$	1,605	$	(16	)	$	1,657	$	(16	)

1 Represents investment securities backed by the full faith and credit of the U.S. Government.

Investments Classified by Contractual Maturity Date [Table Text Block]

The following table summarizes HTM securities by contractual maturity. Expected maturities of some securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment fees (dollars in millions):

	June 30, 2018				December 31, 2017
Year of Contractual Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Non-mortgage-backed securities
Due in one year or less	$	14	$	14	$	20	$	20
Due after one year through five years	71		71		72		72
Due after five years through ten years	340		362		344		376
Due after ten years	393		417		411		444
Total non-mortgage-backed securities	818		864		847		912
Mortgage-backed securities	2,477		2,461		2,781		2,774
Total	$	3,295	$	3,325	$	3,628	$	3,686

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Advances (Tables)

6 Months Ended

Jun. 30, 2018

Advances [Abstract]

Schedule of Federal Home Loan Bank Advances by Year of Contractual Maturity [Table Text Block]

The following table summarizes the Bank’s advances outstanding by contractual maturity (dollars in millions):

	June 30, 2018					December 31, 2017
Year of Contractual Maturity	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Overdrawn demand deposit accounts	$	34		3.10	%	$	1		3.63	%
Due in one year or less	52,016			2.16		45,310			1.62
Due after one year through two years	18,954			2.25		17,094			1.79
Due after two years through three years	20,620			2.31		14,222			1.64
Due after three years through four years	10,543			2.51		17,561			1.79
Due after four years through five years	3,918			2.51		3,089			1.91
Thereafter	4,097			2.83		5,401			2.28
Total par value	110,182			2.28	%	102,678			1.73	%
Premiums	44					53
Discounts	(10		)			(12		)
Fair value hedging adjustments	(253		)			(106		)
Total	$	109,963				$	102,613

The following table summarizes all advances by year of contractual maturity or next call date for callable advances, and by year of contractual maturity or next put date for putable advances (dollars in millions):

	Year of Contractual Maturity or Next Call Date				Year of Contractual Maturity or Next Put Date
	June 30, 2018		December 31, 2017		June 30, 2018		December 31, 2017
Overdrawn demand deposit accounts	$	34	$	1	$	34	$	1
Due in one year or less	83,073		69,971		52,075		45,372
Due after one year through two years	11,161		16,539		18,954		17,094
Due after two years through three years	3,458		3,809		20,595		14,222
Due after three years through four years	7,746		8,511		10,533		17,520
Due after four years through five years	1,895		1,276		3,909		3,073
Thereafter	2,815		2,571		4,082		5,396
Total par value	$	110,182	$	102,678	$	110,182	$	102,678

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Mortgage Loans Held for Portfolio (Tables)

6 Months Ended

Jun. 30, 2018

Mortgage Loans on Real Estate [Abstract]

Mortgage Loans Held for Portfolio [Table Text Block]

The following table presents information on the Bank’s mortgage loans held for portfolio (dollars in millions):

	June 30, 2018			December 31, 2017
Fixed rate, long-term single-family mortgage loans	$	6,281		$	5,998
Fixed rate, medium-term1 single-family mortgage loans	934			1,003
Total unpaid principal balance	7,215			7,001
Premiums	99			98
Discounts	(6		)	(6		)
Basis adjustments from mortgage loan commitments	3			5
Total mortgage loans held for portfolio	7,311			7,098
Allowance for credit losses	(1		)	(2		)
Total mortgage loans held for portfolio, net	$	7,310		$	7,096

1 Medium-term is defined as a term of 15 years or less.

The following table presents the Bank’s mortgage loans held for portfolio by collateral or guarantee type (dollars in millions):

	June 30, 2018		December 31, 2017
Conventional mortgage loans	$	6,699	$	6,472
Government-insured mortgage loans	516		529
Total unpaid principal balance	$	7,215	$	7,001

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Allowance for Credit Losses (Tables)

6 Months Ended

Jun. 30, 2018

Allowance for Credit Losses [Abstract]

Allowance for Credit Losses by Impairment Methodology [Table Text Block]

The following table summarizes the allowance for credit losses and the recorded investment of the Bank’s conventional mortgage loan portfolio by impairment methodology (dollars in millions):

	June 30, 2018		December 31, 2017
Allowance for credit losses
Collectively evaluated for impairment	$	1	$	2
Recorded investment1
Collectively evaluated for impairment	$	6,759	$	6,530
Individually evaluated for impairment, without a related allowance	59		61
Total recorded investment	$	6,818	$	6,591

1    Represents the unpaid principal balance adjusted for accrued interest, unamortized premiums, discounts, basis adjustments, and direct write-downs.

Past Due Financing Receivables [Table Text Block]

The tables below summarize the Bank’s key credit quality indicators for mortgage loans (dollars in millions):

	June 30, 2018
	Conventional MPF/MPP			Government-Guaranteed or -Insured6			Total
Past due 30 - 59 days	$	44		$	18		$	62
Past due 60 - 89 days	13			6			19
Past due 90 - 179 days	10			3			13
Past due 180 days or more	16			4			20
Total past due mortgage loans	83			31			114
Total current mortgage loans	6,735			499			7,234
Total recorded investment of mortgage loans1	$	6,818		$	530		$	7,348
In process of foreclosure (included above)2	$	11		$	2		$	13
Serious delinquency rate3	—		%	1		%	—		%
Past due 90 days or more and still accruing interest4	—			$	7		$	7
Non-accrual mortgage loans5	$	40		$	—		$	40

1 Represents the unpaid principal balance adjusted for accrued interest, unamortized premiums, discounts, basis adjustments, and direct write-downs.

2 Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans depending on their payment status.

3 Represents mortgage loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment.

4 Represents government-insured mortgage loans that are 90 days or more past due.

5 Represents conventional mortgage loans that are 90 days or more past due and TDRs.

6 The Bank did not record any allowance for credit losses on government-guaranteed or -insured mortgage loans at June 30, 2018 and December 31, 2017.

	December 31, 2017
	Conventional MPF/MPP			Government- Guaranteed or -Insured6			Total
Past due 30 - 59 days	$	58		$	19		$	77
Past due 60 - 89 days	16			6			22
Past due 90 - 179 days	15			5			20
Past due 180 days or more	21			6			27
Total past due mortgage loans	110			36			146
Total current mortgage loans	6,481			507			6,988
Total recorded investment of mortgage loans1	$	6,591		$	543		$	7,134
In process of foreclosure (included above)2	$	12		$	2		$	14
Serious delinquency rate3	1		%	2		%	1		%
Past due 90 days or more and still accruing interest4	$	—		$	11		$	11
Non-accrual mortgage loans5	$	48		$	—		$	48

1 Represents the unpaid principal balance adjusted for accrued interest, unamortized premiums, discounts, basis adjustments, and direct write-downs.

2 Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans depending on their payment status.

3 Represents mortgage loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment.

4 Represents government-insured mortgage loans that are 90 days or more past due.

5 Represents conventional mortgage loans that are 90 days or more past due and TDRs.

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Derivatives and Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Offsetting Assets [Table Text Block]

The following table presents the fair value of derivative instruments meeting or not meeting the netting requirements and the related collateral received from or pledged to counterparties (dollars in millions):

	June 30, 2018
Derivative Instruments Meeting Netting Requirements	Amount Recognized		Gross Amount of Netting Adjustments and Cash Collateral			Total Derivative Assets and Total Derivative Liabilities
Derivative Assets
Uncleared derivatives	$	151	$	(150	)	$	1
Cleared derivatives	3		79			82
Total	$	154	$	(71	)	$	83
Derivative Liabilities
Uncleared derivatives	$	120	$	(118	)	$	2
Cleared derivatives	7		(7		)	—
Total	$	127	$	(125	)	$	2

	December 31, 2017
Derivative Instruments Meeting Netting Requirements	Amount Recognized1		Gross Amount of Netting Adjustments and Cash Collateral			Total Derivative Assets and Total Derivative Liabilities
Derivative Assets
Uncleared derivatives	$	88	$	(87	)	$	1
Cleared derivatives	9		90			99
Total	$	97	$	3		$	100
Derivative Liabilities
Uncleared derivatives	$	170	$	(164	)	$	6
Cleared derivatives	18		(18		)	—
Total	$	188	$	(182	)	$	6

1    To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with gross amount of netting adjustments and cash collateral.

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The following table summarizes the Bank’s notional amount and fair value of derivative instruments and total derivative assets and liabilities. Total derivative assets and liabilities include the effect of netting adjustments and cash collateral. For purposes of this disclosure, the derivative values include the fair value of derivatives and the related accrued interest(dollars in millions):

	June 30, 2018								December 31, 20171
	Notional Amount		Derivative Assets			Derivative  Liabilities			Notional Amount		Derivative Assets		Derivative  Liabilities
Derivatives designated as hedging instruments (fair value hedges)
Interest rate swaps	$	46,828	$	125		$	105		$	52,120	$	77	$	151
Derivatives not designated as hedging instruments (economic hedges)
Interest rate swaps	1,372		29			21			1,407		20		37
Forward settlement agreements (TBAs)	167		—			1			66		—		—
Mortgage delivery commitments	172		—			—			72		—		—
Total derivatives not designated as hedging instruments	1,711		29			22			1,545		20		37
Total derivatives before netting and collateral adjustments	$	48,539	154			127			$	53,665	97		188
Netting adjustments and cash collateral2			(71		)	(125		)			3		(182		)
Total derivative assets and derivative liabilities			$	83		$	2				$	100	$	6

1 To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with netting adjustments and cash collateral.

2 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty. At June 30, 2018 and December 31, 2017, cash collateral posted by the Bank (including accrued interest) was $128 million and $191 million. At June 30, 2018 and December 31, 2017, the Bank received cash collateral (including accrued interest) from clearing agents and/or counterparties of $73 million and $6 million.

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]

The following table summarizes the components of “Net gains (losses) on derivatives and hedging activities” as presented in the Statements of Income (dollars in millions):

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
Derivatives designated as hedging instruments (fair value hedges)
Interest rate swaps	$	7		$	6		$	7		$	10
Derivatives not designated as hedging instruments (economic hedges)
Interest rate swaps	7			(6		)	28			(1		)
Forward settlement agreements (TBAs)	1			—			2			(1		)
Mortgage delivery commitments	—			—			(1		)	1
Net interest settlements	(1		)	(3		)	(3		)	(7		)
Total net gains (losses) related to derivatives not designated as hedging instruments	7			(9		)	26			(8		)
Other1	—			—			1			1
Net gains (losses) on derivatives and hedging activities	$	14		$	(3	)	$	34		$	3

1 Consists of price alignment amount on derivatives for which variation margin is characterized as a daily settled contract.

Schedule of Derivative Instruments By Type, Gain (Loss) in Statement of Financial Performance [Table Text Block]

The following tables summarize, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships, the net fair value hedge ineffectiveness, and the effect of those derivatives on the Bank’s net interest income (dollars in millions):

	For the Three Months Ended June 30, 2018
Hedged Item Type	Net Gains (Losses) on Derivatives		Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness			Effect on Net Interest Income1
Available-for-sale investments	$	55	$	(48	)	$	7		$	(6	)
Advances2	31		(29		)	2			13
Consolidated obligation bonds	—		(2		)	(2		)	(62		)
Total	$	86	$	(79	)	$	7		$	(55	)

	For the Three Months Ended June 30, 2017
Hedged Item Type	Net Gains (Losses) on Derivatives			Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness			Effect on Net Interest Income1
Available-for-sale investments	$	(41	)	$	49		$	8		$	(24	)
Advances2	(25		)	26			1			(21		)
Consolidated obligation bonds	72			(75		)	(3		)	7
Total	$	6		$	—		$	6		$	(38	)

1 Represents the net interest settlements on derivatives in fair value hedge relationships and the amortization of the financing element of off-market derivatives, both of which are included in the interest income or interest expense line item of the respective hedged item type. During the three months ended June 30, 2018 and 2017, the amortization for off-market derivatives totaled less than $1 million and $4 million.

2 Includes net gains (losses) on fair value hedge firm commitments of forward starting advances.

The following tables summarize, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships, the net fair value hedge ineffectiveness, and the effect of those derivatives on the Bank’s net interest income (dollars in millions):

	For the Six Months Ended June 30, 2018
Hedged Item Type	Net Gains (Losses) on Derivatives			Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness		Effect on Net Interest Income1
Available-for-sale investments	$	207		$	(203	)	$	4	$	(19	)
Advances2	156			(154		)	2		12
Consolidated obligation bonds	(154		)	155			1		(94		)
Total	$	209		$	(202	)	$	7	$	(101	)

	For the Six Months Ended June 30, 2017
Hedged Item Type	Net Gains (Losses) on Derivatives			Net Gains (Losses) on Hedged Items			Net Fair Value Hedge Ineffectiveness			Effect on Net Interest Income1
Available-for-sale investments	$	(4	)	$	18		$	14		$	(53	)
Advances2	8			(6		)	2			(45		)
Consolidated obligation bonds	22			(28		)	(6		)	26
Total	$	26		$	(16	)	$	10		$	(72	)

1 Represents the net interest settlements on derivatives in fair value hedge relationships and the amortization of the financing element of off-market derivatives, both of which are included in the interest income or interest expense line item of the respective hedged item type. During the six months ended June 30, 2018 and 2017, the amortization for off-market derivatives totaled less than $1 million and $9 million.

2 Includes net gains (losses) on fair value hedge firm commitments of forward starting advances.

Offsetting Assets and Liabilities [Table Text Block]

The following table presents the fair value of derivative instruments meeting or not meeting the netting requirements and the related collateral received from or pledged to counterparties (dollars in millions):

	June 30, 2018
Derivative Instruments Meeting Netting Requirements	Amount Recognized		Gross Amount of Netting Adjustments and Cash Collateral			Total Derivative Assets and Total Derivative Liabilities
Derivative Assets
Uncleared derivatives	$	151	$	(150	)	$	1
Cleared derivatives	3		79			82
Total	$	154	$	(71	)	$	83
Derivative Liabilities
Uncleared derivatives	$	120	$	(118	)	$	2
Cleared derivatives	7		(7		)	—
Total	$	127	$	(125	)	$	2

	December 31, 2017
Derivative Instruments Meeting Netting Requirements	Amount Recognized1		Gross Amount of Netting Adjustments and Cash Collateral			Total Derivative Assets and Total Derivative Liabilities
Derivative Assets
Uncleared derivatives	$	88	$	(87	)	$	1
Cleared derivatives	9		90			99
Total	$	97	$	3		$	100
Derivative Liabilities
Uncleared derivatives	$	170	$	(164	)	$	6
Cleared derivatives	18		(18		)	—
Total	$	188	$	(182	)	$	6

1    To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with gross amount of netting adjustments and cash collateral.

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Consolidated Obligations (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Schedule of Short-term Debt [Table Text Block]

The following table summarizes the Bank’s discount notes (dollars in millions):

	June 30, 2018					December 31, 2017
	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Par value	$	43,241		1.87	%	$	36,740		1.20	%
Discounts and concessions1	(119		)			(58		)
Total	$	43,122				$	36,682

1 Concessions represent fees paid to dealers in connections with the issuance of certain consolidated obligation discount notes.

Schedule of Maturities of Long-term Debt [Table Text Block]

The following table summarizes the Bank’s bonds outstanding by contractual maturity (dollars in millions):

	June 30, 2018					December 31, 2017
Year of Contractual Maturity	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Due in one year or less	$	57,307		1.87	%	$	50,077		1.32	%
Due after one year through two years	24,341			1.90		32,249			1.43
Due after two years through three years	3,034			2.59		3,177			2.84
Due after three years through four years	7,207			1.71		7,422			1.69
Due after four years through five years	2,124			2.31		1,507			2.42
Thereafter	4,917			3.37		4,752			3.10
Total par value	98,930			1.97	%	99,184			1.54	%
Premiums	168					193
Discounts and concessions1	(52		)			(60		)
Fair value hedging adjustments	(578		)			(424		)
Total	$	98,468				$	98,893

1 Concessions represent fees paid to dealers in connections with the issuance of certain consolidated obligation bonds.

Schedule of Long-term Debt by Call Feature [Table Text Block]

The following table summarizes the Bank’s bonds outstanding by call features (dollars in millions):

	June 30, 2018		December 31, 2017
Non-callable or non-putable	$	94,742	$	97,196
Callable	4,188		1,988
Total par value	$	98,930	$	99,184

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Capital (Tables)

6 Months Ended

Jun. 30, 2018

Capital [Abstract]

Mandatorily Redeemable Capital Stock [Table Text Block]

The following table summarizes changes in mandatorily redeemable capital stock (dollars in millions):

	For the Three Months Ended June 30,
	2018			2017
Balance, beginning of period	$	356		$	494
Capital stock reclassified to (from) mandatorily redeemable capital stock, net	36			18
Net payments for repurchases/redemptions of mandatorily redeemable capital stock	(19		)	(32		)
Balance, end of period	$	373		$	480

The following table summarizes changes in mandatorily redeemable capital stock (dollars in millions):

	For the Six Months Ended June 30,
	2018			2017
Balance, beginning of period	$	385		$	664
Capital stock reclassified to (from) mandatorily redeemable capital stock, net	39			28
Net payments for repurchases/redemptions of mandatorily redeemable capital stock	(51		)	(212		)
Balance, end of period	$	373		$	480

The following table summarizes the Bank’s mandatorily redeemable capital stock by year of contractual redemption (dollars in millions):

Year of Contractual Redemption1	June 30, 2018		December 31, 2017
Due in one year or less	$	—	$	4
Due after one year through two years	2		2
Due after two years through three years	1		—
Due after three years through four years	11		1
Due after four years through five years	26		22
Thereafter2	317		341
Past contractual redemption date due to outstanding activity with the Bank	16		15
Total	$	373	$	385

1 At the Bank’s election, the mandatorily redeemable capital stock may be redeemed prior to the expiration of the five year redemption period that commences on the date of the notice of redemption, or in the case of captive insurance company members, on the date of the membership termination.

2 Represents mandatorily redeemable capital stock resulting from the Finance Agency rule previously discussed that makes captive insurance companies ineligible for FHLBank membership. The related mandatorily redeemable capital stock is not required to be redeemed until five years after the member's termination.

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table summarizes changes in AOCI (dollars in millions):

	Net unrealized gains (losses) on AFS securities (Note 4)			Pension and postretirement benefits			Total AOCI
Balance, March 31, 2017	$	50		$	(3	)	$	47
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	41			—			41
Reclassifications from AOCI to net income
Amortization - pension and postretirement	—			1			1
Net current period other comprehensive income (loss)	41			1			42
Balance, June 30, 2017	$	91		$	(2	)	$	89
Balance, March 31, 2018	$	163		$	(4	)	$	159
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	(17		)	—			(17		)
Net current period other comprehensive income (loss)	(17		)	—			(17		)
Balance, June 30, 2018	$	146		$	(4	)	$	142
Balance, December 31, 2016	$	(14	)	$	(4	)	$	(18	)
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	105			—			105
Reclassifications from AOCI to net income
Amortization - pension and postretirement	—			2			2
Net current period other comprehensive income (loss)	105			2			107
Balance, June 30, 2017	$	91		$	(2	)	$	89
Balance, December 31, 2017	$	118		$	(4	)	$	114
Other comprehensive income (loss) before reclassifications
Net unrealized gains (losses) on AFS securities	28			—			28
Net current period other comprehensive income (loss)	28			—			28
Balance, June 30, 2018	$	146		$	(4	)	$	142

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

The following table shows the Bank’s compliance with the Finance Agency’s regulatory capital requirements (dollars in millions):

	June 30, 2018						December 31, 2017
	Required			Actual			Required			Actual
Regulatory capital requirements
Risk-based capital	$	1,178		$	7,770		$	1,041		$	7,292
Regulatory capital	$	6,039		$	7,770		$	5,804		$	7,292
Leverage capital	$	7,549		$	11,656		$	7,255		$	10,937
Capital-to-assets ratio	4.00		%	5.15		%	4.00		%	5.03		%
Leverage ratio	5.00		%	7.72		%	5.00		%	7.54		%

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Fair Value (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value, Option, Quantitative Disclosures [Table Text Block]

The following table summarizes the difference between the unpaid principal balance and fair value of outstanding instruments for which the fair value option was elected at June 30, 2018 (dollars in million):

	June 30, 2018
	Unpaid Principal Balance		Fair Value		Fair Value Over (Under) Unpaid Principal
Advances1	$	15	$	15	$	—

1    AtJune 30, 2018 none of the advances were 90 days or more past due or had been placed on non-accrual status.

Fair Value, by Balance Sheet Grouping [Table Text Block]

The following table summarizes the carrying value, fair value, and fair value hierarchy of the Bank’s financial instruments at June 30, 2018 (dollars in millions). The Bank records trading securities, AFS securities, derivative assets, derivative liabilities, certain advances, and certain other assets at fair value on a recurring basis, and on occasion certain mortgage loans held for portfolio on a non-recurring basis. The Bank records all other financial assets and liabilities at amortized cost. The fair values do not represent an estimate of the overall market value of the Bank as a going concern, which would take into account future business opportunities and the net profitability of assets and liabilities.

				Fair Value
Financial Instruments	Carrying Value			Level 1			Level 2			Level 3		Netting Adjustments and Cash Collateral1			Total
Assets
Cash and due from banks	$	201		$	201		$	—		$	—	$	—		$	201
Interest-bearing deposits	1			—			1			—		—			1
Securities purchased under agreements to resell	4,900			—			4,900			—		—			4,900
Federal funds sold	4,435			—			4,435			—		—			4,435
Trading securities	937			—			937			—		—			937
Available-for-sale securities	19,451			—			19,451			—		—			19,451
Held-to-maturity securities	3,295			—			3,314			11		—			3,325
Advances	109,963			—			110,031			—		—			110,031
Mortgage loans held for portfolio, net	7,310			—			7,189			63		—			7,252
Accrued interest receivable	305			—			305			—		—			305
Derivative assets, net	83			—			154			—		(71		)	83
Other assets	29			29			—			—		—			29
Liabilities
Deposits	(1,028		)	—			(1,028		)	—		—			(1,028		)
Consolidated obligations
Discount notes	(43,122		)	—			(43,119		)	—		—			(43,119		)
Bonds	(98,468		)	—			(98,539		)	—		—			(98,539		)
Total consolidated obligations	(141,590		)	—			(141,658		)	—		—			(141,658		)
Mandatorily redeemable capital stock	(373		)	(373		)	—			—		—			(373		)
Accrued interest payable	(238		)	—			(238		)	—		—			(238		)
Derivative liabilities, net	(2		)	—			(127		)	—		125			(2		)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty.

The following table summarizes the carrying value, fair value, and fair value hierarchy of the Bank’s financial instruments at December 31, 2017 (dollars in millions):

				Fair Value
Financial Instruments	Carrying Value			Level 1			Level 2			Level 3		Netting Adjustments and Cash Collateral1		Total
Assets
Cash and due from banks	$	503		$	503		$	—		$	—	$	—	$	503
Interest-bearing deposits	1			—			1			—		—		1
Securities purchased under agreements to resell	4,600			—			4,600			—		—		4,600
Federal funds sold	4,250			—			4,250			—		—		4,250
Trading securities	1,177			—			1,177			—		—		1,177
Available-for-sale securities	20,796			—			20,796			—		—		20,796
Held-to-maturity securities	3,628			—			3,674			12		—		3,686
Advances	102,613			—			102,708			—		—		102,708
Mortgage loans held for portfolio, net	7,096			—			7,124			64		—		7,188
Accrued interest receivable	223			—			223			—		—		223
Derivative assets, net	100			—			97			—		3		100
Other assets	28			28			—			—		—		28
Liabilities
Deposits	(1,107		)	—			(1,107		)	—		—		(1,107		)
Borrowings from other FHLBanks	(600		)	—			(600		)	—		—		(600		)
Consolidated obligations
Discount notes	(36,682		)	—			(36,674		)	—		—		(36,674		)
Bonds	(98,893		)	—			(99,150		)	—		—		(99,150		)
Total consolidated obligations	(135,575		)	—			(135,824		)	—		—		(135,824		)
Mandatorily redeemable capital stock	(385		)	(385		)	—			—		—		(385		)
Accrued interest payable	(210		)	—			(210		)	—		—		(210		)
Derivative liabilities, net	(6		)	—			(188		)	—		182		(6		)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty. To conform with current presentation $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with netting adjustments and cash collateral.

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following table summarizes, for each hierarchy level, the Bank’s assets and liabilities that are measured at fair value in the Statements of Condition atJune 30, 2018(dollars in millions):

Recurring Fair Value Measurements	Level 1		Level 2			Level 3		Netting Adjustments and Cash Collateral1			Total
Assets
Trading securities
U.S. obligations	$	—	$	182		$	—	$	—		$	182
GSE and Tennessee Valley Authority obligations	—		57			—		—			57
Othernon-MBS	—		265			—		—			265
GSE multifamily MBS	—		433			—		—			433
Total trading securities	—		937			—		—			937
Available-for-sale securities
U.S. obligations	—		2,820			—		—			2,820
GSE and Tennessee Valley Authority obligations	—		1,039			—		—			1,039
State or local housing agency obligations	—		906			—		—			906
Other non-MBS	—		272			—		—			272
U.S. obligations single-family MBS	—		4,097			—		—			4,097
GSE single-family MBS	—		885			—		—			885
GSE multifamily MBS	—		9,432			—		—			9,432
Total available-for-sale securities	—		19,451			—		—			19,451
Advances2	—		15			—		—			15
Derivative assets, net
Interest-rate related	—		154			—		(71		)	83
Other assets	29		—			—		—			29
Total recurring assets at fair value	$	29	$	20,557		$	—	$	(71	)	$	20,515
Liabilities
Derivative liabilities, net
Interest-rate related	—		(126		)	—		125			(1		)
Forward settlement agreements (TBAs)	—		(1		)	—		—			(1		)
Total recurring liabilities at fair value	$	—	$	(127	)	$	—	$	125		$	(2	)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty.

2 Represents financial instruments recorded under the fair value option.

The following table summarizes, for each hierarchy level, the Bank’s assets and liabilities that are measured at fair value in the Statements of Condition at December 31, 2017 (dollars in millions):

Recurring Fair Value Measurements	Level 1		Level 2			Level 3		Netting Adjustments and Cash Collateral1		Total
Assets
Trading securities
U.S. obligations	$	—	$	197		$	—	$	—	$	197
GSE and Tennessee Valley Authority obligations	—		260			—		—		260
Othernon-MBS	—		272			—		—		272
GSE multifamily MBS	—		448			—		—		448
Total trading securities	—		1,177			—		—		1,177
Available-for-sale securities
U.S. obligations	—		3,099			—		—		3,099
GSE and Tennessee Valley Authority obligations	—		1,236			—		—		1,236
State or local housing agency obligations	—		934			—		—		934
Other non-MBS	—		278			—		—		278
U.S. obligations single-family MBS	—		3,726			—		—		3,726
GSE single-family MBS	—		988			—		—		988
GSE multifamily MBS	—		10,535			—		—		10,535
Total available-for-sale securities	—		20,796			—		—		20,796
Derivative assets, net
Interest-rate related	—		97			—		3		100
Other assets	28		—			—		—		28
Total recurring assets at fair value	$	28	$	22,070		$	—	$	3	$	22,101
Liabilities
Derivative liabilities, net
Interest-rate related	—		(188		)	—		182		(6		)
Total recurring liabilities at fair value	$	—	$	(188	)	$	—	$	182	$	(6	)

1 Amounts represent the application of the netting requirements that allow the Bank to net settle positive and negative positions and also cash collateral and the related accrued interest held or placed with the same clearing agent and/or counterparty. To conform with current presentation, $313 million in variation margin has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with netting adjustments and cash collateral.

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Off-Balance Sheet Commitments [Table Text Block]

The following table summarizes additional off-balance sheet commitments for the Bank (dollars in millions):

	June 30, 2018						December 31, 2017
	Expire within one year		Expire after one year		Total		Total
Standby letters of credit1	$	9,111	$	166	$	9,277	$	8,594
Standby bond purchase agreements	117		587		704		755
Commitments to purchase mortgage loans	172		—		172		72
Commitments to issue bonds	264		—		264		—
Commitments to fund advances	779		1		780		1,138

1 Excludes commitments to issue standby letters of credit of $53 million and $7 million at June 30, 2018 and December 31, 2017.

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Activities with Stockholders (Tables)

6 Months Ended

Jun. 30, 2018

Related Party Transactions [Abstract]

Related Party Transactions by Balance Sheet Grouping [Table Text Block]

The following table summarizes the Bank’s outstanding transactions with Directors’ Financial Institutions (dollars in millions):

	June 30, 2018			December 31, 2017
	Amount		% of Total	Amount		% of Total
Advances	$	5,134	5	$	6,036	6
Mortgage loans	86		1	68		1
Deposits	11		1	39		4
Capital stock	256		4	297		5

Schedule Of Related Party Transactions By Related Party [Tables Text Block]

At June 30, 2018, the Bank had the following business concentrations with stockholders (dollars in millions):

	Capital Stock					Mortgage		Interest
Stockholder	Amount		% of Total1	Advances		Loans4		Income2
Wells Fargo Bank, N.A.	$	2,052	35	$	51,025	$	27	$	550
Superior Guaranty Insurance Company3	19		—	—		463		—
Total	$	2,071	35	$	51,025	$	490	$	550

1 Pursuant to applicable Finance Agency regulations, the Bank’s voting structure limits the voting rights of these stockholders and other members holding a significant amount of the Bank’s capital stock.

2 Represents interest income earned on advances during the six months ended June 30, 2018. Interest income on mortgage loans is excluded from this table as this interest relates to the borrower, not to the stockholder.

3 Superior Guaranty Insurance Company is an affiliate of Wells Fargo Bank, N.A.

4 PFI rights and obligations associated with MPP mortgage loans of $27 million were transferred from Wells Fargo Trust Company, N.A. (formerly Wells Fargo Bank Northwest N.A.) to Wells Fargo Bank, N.A. during the three months ended June 30, 2018.

At December 31, 2017, the Bank had the following business concentrations with stockholders (dollars in millions):

	Capital Stock					Mortgage		Interest
Stockholder	Amount		% of Total1	Advances		Loans		Income2
Wells Fargo Bank, N.A.	$	1,843	34	$	45,825	$	—	$	834
Superior Guaranty Insurance Company3	22		—	—		520		—
Wells Fargo Bank Northwest N.A.3	1		—	—		30		—
Total	$	1,866	34	$	45,825	$	550	$	834

1 Pursuant to applicable Finance Agency regulations, the Bank’s voting structure limits the voting rights of these stockholders and other members holding a significant amount of the Bank’s capital stock.

2 Represents interest income earned on advances during the year ended December 31, 2017. Interest income on mortgage loans is excluded from this table as this interest relates to the borrower, not to the stockholder.

3 Superior Guaranty Insurance Company and Wells Fargo Bank Northwest, N.A. were affiliates of Wells Fargo Bank, N.A at December 31, 2017.

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Activities with Other FHLBanks (Tables)

6 Months Ended

Jun. 30, 2018

Activities with Other FHLBanks [Abstract]

Schedule of Loans to Other Federal Home Loan Banks [Table Text Block]

The following table summarizes loan activity to other FHLBanks during the six months ended June 30, 2018 and 2017 (dollars in millions):

Other FHLBank	Beginning Balance		Loans		Principal Repayment			Ending Balance
2018
Boston	$	—	$	800	$	(800	)	$	—
San Francisco	—		300		(300		)	—
Dallas	—		500		(500		)	—
	$	—	$	1,600	$	(1,600	)	$	—
2017
San Francisco	$	200	$	—	$	(200	)	$	—

Schedule of Loans From Other Federal Home Loan Banks [Table Text Block]

The following table summarizes borrowing activity from other FHLBanks during the six months ended June 30, 2018 (dollars in millions):

Other FHLBank	Beginning Balance		Borrowing		Principal Payment			Ending Balance
2018
Atlanta	$	200	$	—	$	(200	)	$	—
Boston	400		—		(400		)	—
	$	600	$	—	$	(600	)	$	—

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Background Information (Details)	Jun. 30, 2018 bank
Background Information [Abstract]
Number of Federal Home Loan Banks	11

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Trading Securities (Major Security Types) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	$ 937	$ 1,177
Other U.S. obligations [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	182	197
GSE obligations [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	57	260
Other [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	265	272
Non-mortgage-backed securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	504	729
Multifamily [Member] | Mortgage-backed securities, GSE [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	$ 433	$ 448

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Trading Securities (Net Gains (Losses) on Trading Securities) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Trading Securities [Abstract]
Trading Securities, Change in Unrealized Holding Gain (Loss)	$ (8)	$ 4	$ (24)	$ 9

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Available-for-Sale Securities (Major Security Types) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 19,305	$ 20,678
Gross Unrealized Gains	162	131
Gross Unrealized Losses	(16)	(13)
Fair Value	19,451	20,796
Other U.S. obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,808	3,096
Gross Unrealized Gains	13	8
Gross Unrealized Losses	(1)	(5)
Fair Value	2,820	3,099
GSE obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,001	1,197
Gross Unrealized Gains	38	39
Gross Unrealized Losses	0	0
Fair Value	1,039	1,236
State or local housing agency obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	908	935
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2)	(1)
Fair Value	906	934
Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	260	269
Gross Unrealized Gains	12	9
Gross Unrealized Losses	0	0
Fair Value	272	278
Non-mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,977	5,497
Gross Unrealized Gains	63	56
Gross Unrealized Losses	(3)	(6)
Fair Value	5,037	5,547
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	14,328	15,181
Gross Unrealized Gains	99	75
Gross Unrealized Losses	(13)	(7)
Fair Value	14,414	15,249
Single Family [Member] | Other U.S. obligations MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,065	3,716
Gross Unrealized Gains	33	11
Gross Unrealized Losses	(1)	(1)
Fair Value	4,097	3,726
Single Family [Member] | Mortgage-backed securities, GSE [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	883	983
Gross Unrealized Gains	7	7
Gross Unrealized Losses	(5)	(2)
Fair Value	885	988
Multifamily [Member] | Mortgage-backed securities, GSE [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,380	10,482
Gross Unrealized Gains	59	57
Gross Unrealized Losses	(7)	(4)
Fair Value	$ 9,432	$ 10,535

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Available-for-Sale Securities (Unrealized Losses) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 3,776	$ 592
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(10)	(3)
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,839	5,134
Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(6)	(10)
Continuous Unrealized Loss Position, Fair Value	5,615	5,726
Continuous Unrealized Loss Position, Unrealized Losses	(16)	(13)
Other U.S. obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	316	29
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	338	1,783
Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(1)	(5)
Continuous Unrealized Loss Position, Fair Value	654	1,812
Continuous Unrealized Loss Position, Unrealized Losses	(1)	(5)
State or local housing agency obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	13	6
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	594	655
Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(2)	(1)
Continuous Unrealized Loss Position, Fair Value	607	661
Continuous Unrealized Loss Position, Unrealized Losses	(2)	(1)
Non-mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	329	35
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	932	2,438
Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(3)	(6)
Continuous Unrealized Loss Position, Fair Value	1,261	2,473
Continuous Unrealized Loss Position, Unrealized Losses	(3)	(6)
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	3,447	557
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(10)	(3)
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	907	2,696
Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(3)	(4)
Continuous Unrealized Loss Position, Fair Value	4,354	3,253
Continuous Unrealized Loss Position, Unrealized Losses	(13)	(7)
Multifamily [Member] | Mortgage-backed securities, GSE [Member]
Schedule of Available-for-sale Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	2,653	224
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(4)	(1)
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	859	1,756
Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(3)	(3)
Continuous Unrealized Loss Position, Fair Value	3,512	1,980
Continuous Unrealized Loss Position, Unrealized Losses	(7)	(4)
Single Family [Member] | Other U.S. obligations MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	497	111
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(1)	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	887
Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0	(1)
Continuous Unrealized Loss Position, Fair Value	497	998
Continuous Unrealized Loss Position, Unrealized Losses	(1)	(1)
Single Family [Member] | Mortgage-backed securities, GSE [Member]
Schedule of Available-for-sale Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	297	222
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(5)	(2)
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	48	53
Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0	0
Continuous Unrealized Loss Position, Fair Value	345	275
Continuous Unrealized Loss Position, Unrealized Losses	$ (5)	$ (2)

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Available-for-Sale Securities (Contractual Maturity) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 19,305	$ 20,678
Fair Value	19,451	20,796
Non-mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Contractual Maturities, Due in one year or less, Amortized Cost	26	158
Contractual Maturities, Due in one year or less, Fair Value	26	159
Contractual Maturities, Due after one year through five years, Amortized Cost	969	750
Contractual Maturities, Due after one year through five years, Fair Value	976	755
Contractual Maturities, Due after five years through ten years, Amortized Cost	3,160	3,574
Contractual Maturities, Due after five years through ten years, Fair Value	3,181	3,583
Contractual Maturities, Due after ten years, Amortized Cost	822	1,015
Contractual Maturities, Due after ten years, Fair Value	854	1,050
Amortized Cost	4,977	5,497
Fair Value	5,037	5,547
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	14,328	15,181
Fair Value	$ 14,414	$ 15,249

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Held-to-Maturity Securities (Major Security Types) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 3,295	$ 3,628
Accumulated Unrecognized Holding Gain	58	74
Accumulated Unrecognized Holding Loss	(28)	(16)
Fair Value	3,325	3,686
GSE obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	391	393
Accumulated Unrecognized Holding Gain	49	65
Accumulated Unrecognized Holding Loss	(2)	0
Fair Value	438	458
State or local housing agency obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	427	454
Accumulated Unrecognized Holding Gain	1	2
Accumulated Unrecognized Holding Loss	(2)	(2)
Fair Value	426	454
Non-mortgage-backed securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	818	847
Accumulated Unrecognized Holding Gain	50	67
Accumulated Unrecognized Holding Loss	(4)	(2)
Fair Value	864	912
Mortgage-backed securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,477	2,781
Accumulated Unrecognized Holding Gain	8	7
Accumulated Unrecognized Holding Loss	(24)	(14)
Fair Value	2,461	2,774
Single Family [Member] | Other U.S. obligations MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	11	15
Accumulated Unrecognized Holding Gain	0	0
Accumulated Unrecognized Holding Loss	0	0
Fair Value	11	15
Single Family [Member] | Mortgage-backed securities, GSE [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,453	2,752
Accumulated Unrecognized Holding Gain	8	7
Accumulated Unrecognized Holding Loss	(24)	(14)
Fair Value	2,437	2,745
Commercial Mortgage Backed Securities [Member] | Other U.S. obligations MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2	2
Accumulated Unrecognized Holding Gain	0	0
Accumulated Unrecognized Holding Loss	0	0
Fair Value	2	2
Residential Mortgage Backed Securities [Member] | Mortgage-backed securities, Private-label [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	11	12
Accumulated Unrecognized Holding Gain	0	0
Accumulated Unrecognized Holding Loss	0	0
Fair Value	$ 11	$ 12

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Held-to-Maturity Securities (Unrealized Losses) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 120	$ 52
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(2)	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,375	1,605
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(26)	(16)
Continuous Unrealized Loss Position, Fair Value	1,495	1,657
Continuous Unrealized Loss Position, Unrealized Losses	(28)	(16)
GSE obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	90
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(2)
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Continuous Unrealized Loss Position, Fair Value	90
Continuous Unrealized Loss Position, Unrealized Losses	(2)
State or local housing agency obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	17	2
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	162	168
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2)	(2)
Continuous Unrealized Loss Position, Fair Value	179	170
Continuous Unrealized Loss Position, Unrealized Losses	(2)	(2)
Non-mortgage-backed securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	107	2
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(2)	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	162	168
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2)	(2)
Continuous Unrealized Loss Position, Fair Value	269	170
Continuous Unrealized Loss Position, Unrealized Losses	(4)	(2)
Mortgage-backed securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	13	50
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,213	1,437
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(24)	(14)
Continuous Unrealized Loss Position, Fair Value	1,226	1,487
Continuous Unrealized Loss Position, Unrealized Losses	(24)	(14)
Commercial Mortgage Backed Securities [Member] | Other U.S. obligations MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	1	1
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1	1
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Continuous Unrealized Loss Position, Fair Value	2	2
Continuous Unrealized Loss Position, Unrealized Losses	0	0
Single Family [Member] | Other U.S. obligations MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	7
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	5	1
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Continuous Unrealized Loss Position, Fair Value	5	8
Continuous Unrealized Loss Position, Unrealized Losses	0	0
Single Family [Member] | Mortgage-backed securities, GSE [Member]
Schedule of Held-to-maturity Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	12	42
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,200	1,427
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(24)	(14)
Continuous Unrealized Loss Position, Fair Value	1,212	1,469
Continuous Unrealized Loss Position, Unrealized Losses	(24)	(14)
Residential Mortgage Backed Securities [Member] | Mortgage-backed securities, Private-label [Member]
Schedule of Held-to-maturity Securities [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	0
Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	7	8
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Continuous Unrealized Loss Position, Fair Value	7	8
Continuous Unrealized Loss Position, Unrealized Losses	$ 0	$ 0

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Held-to-Maturity Securities (Contractual Maturity) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 3,295	$ 3,628
Fair Value	3,325	3,686
Non-mortgage-backed securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Amortized Cost	14	20
Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value	14	20
Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Amortized Cost	71	72
Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Fair Value	71	72
Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Amortized Cost	340	344
Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value	362	376
Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Amortized Cost	393	411
Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Fair Value	417	444
Amortized Cost	818	847
Fair Value	864	912
Mortgage-backed securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,477	2,781
Fair Value	$ 2,461	$ 2,774

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Advances (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances [Line Items]
Advances	$ 109,963	$ 102,613
Federal Home Loan Bank, Advances, Par Value	110,182	102,678
Federal Home Loan Bank, Advances, Callable Option [Member]
Federal Home Loan Bank, Advances [Line Items]
Federal Home Loan Bank, Advances, Par Value	39,600	27,000
Federal Home Loan Bank, Advances, Putable Option [Member]
Federal Home Loan Bank, Advances [Line Items]
Federal Home Loan Bank, Advances, Par Value	89	405
Wells Fargo Bank N.A. [Member]
Federal Home Loan Bank, Advances [Line Items]
Advances	$ 51,025	$ 45,825
Federal Home Loan Bank Advances, Percent	46.00%	45.00%

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Advances (Redemption Terms) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Advances [Abstract]
Overdrawn demand deposit accounts	$ 34	$ 1
Weighted Average Interest Rate on Overdrawn Demand Deposit	3.10%	3.63%
Due in one year or less	$ 52,016	$ 45,310
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing in Next Twelve Rolling Months	2.16%	1.62%
Due after one year through two years	$ 18,954	$ 17,094
Federal Home Loan Bank Advances, Weighted Average Interest Rate, Maturing in Rolling Year Two	2.25%	1.79%
Due after two years through three years	$ 20,620	$ 14,222
Federal Home Loan Bank Advances, Weighted Average Interest Rate, Maturing in Rolling Year Three	2.31%	1.64%
Due after three years through four years	$ 10,543	$ 17,561
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing in Rolling Year Four	2.51%	1.79%
Due after four years through five years	$ 3,918	$ 3,089
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing in Rolling Year Five	2.51%	1.91%
Thereafter	$ 4,097	$ 5,401
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing after Rolling Year Five	2.83%	2.28%
Federal Home Loan Bank, Advances, Par Value	$ 110,182	$ 102,678
Federal Home Loan Bank, Advances, Weighted Average Interest Rate	2.28%	1.73%
Premiums	$ 44	$ 53
Discounts	(10)	(12)
Fair value hedging adjustments	(253)	(106)
Total	109,963	102,613
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Call Date, in Next Rolling Twelve Months	83,073	69,971
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Put or Convert Date, in Next Rolling Twelve Months	52,075	45,372
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Call Date, in Rolling Year Two	11,161	16,539
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Put or Convert Date, in Rolling Year Two	18,954	17,094
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Call Date, in Rolling Year Three	3,458	3,809
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Put or Convert Date, in Rolling Year Three	20,595	14,222
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Call Date, in Rolling Year Four	7,746	8,511
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Put or Convert Date, in Rolling Year Four	10,533	17,520
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Call Date, in Rolling Year Five	1,895	1,276
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Put or Convert Date, in Rolling Year Five	3,909	3,073
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Call Date, after Rolling Year Five	2,815	2,571
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Put or Convert Date, after Rolling Year Five	$ 4,082	$ 5,396

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Advances (Prepayment Fees) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Advances [Abstract]
Prepayment fees on advances, net	$ 1	$ 1	$ 6	$ 1

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Mortgage Loans Held for Portfolio (Mortgage Loans Held for Portfolio) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Mortgage Loans on Real Estate [Line Items]
Unpaid principal balance	$ 7,215	$ 7,001
Premiums	99	98
Discounts	(6)	(6)
Basis adjustments from mortgage loan commitments	3	5
Total mortgage loans held for portfolio	7,311	7,098
Allowance for credit losses	(1)	(2)
Total mortgage loans held for portfolio, net	7,310	7,096
Single Family [Member] | Fixed rate, long-term single family mortgages [Member]
Mortgage Loans on Real Estate [Line Items]
Unpaid principal balance	6,281	5,998
Single Family [Member] | Fixed rate, medium-term single family mortgages [Member]
Mortgage Loans on Real Estate [Line Items]
Unpaid principal balance	$ 934	$ 1,003

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Mortgage Loans Held for Portfolio (Mortgage Loans Held for Portfolio by Collateral or Guarantee Type) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Mortgage Loans on Real Estate [Line Items]
Unpaid principal balance	$ 7,215	$ 7,001
Conventional Mortgage Loan [Member]
Mortgage Loans on Real Estate [Line Items]
Unpaid principal balance	6,699	6,472
Loans Insured or Guaranteed by US Government Authorities [Member]
Mortgage Loans on Real Estate [Line Items]
Unpaid principal balance	$ 516	$ 529

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Allowance for Credit Losses (Allowance and Recorded Investment by Impairment Methodology) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Gross	$ 7,348	$ 7,134
Conventional Mortgage Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1	2
Financing Receivable, Collectively Evaluated for Impairment	6,759	6,530
Financing Receivable, Individually Evaluated for Impairment	59	61
Financing Receivable, Gross	$ 6,818	$ 6,591

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Allowance for Credit Losses (Credit Quality Indicators) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	$ 114	$ 146
Total current loans	7,234	6,988
Total recorded investment	7,348	7,134
In process of foreclosure	$ 13	$ 14
Serious delinquency rate	0.00%	1.00%
Past due 90 days or more and still accruing interest	$ 7	$ 11
Non-accrual mortgage loans	40	48
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	62	77
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	19	22
Financing Receivables, 90 to 179 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	13	20
Financing Receivables, Greater than 180 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	20	27
Conventional Mortgage Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	83	110
Total current loans	6,735	6,481
Total recorded investment	6,818	6,591
In process of foreclosure	$ 11	$ 12
Serious delinquency rate	0.00%	1.00%
Past due 90 days or more and still accruing interest	$ 0	$ 0
Non-accrual mortgage loans	40	48
Conventional Mortgage Loan [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	44	58
Conventional Mortgage Loan [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	13	16
Conventional Mortgage Loan [Member] | Financing Receivables, 90 to 179 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	10	15
Conventional Mortgage Loan [Member] | Financing Receivables, Greater than 180 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	16	21
Loans Insured or Guaranteed by US Government Authorities [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	31	36
Total current loans	499	507
Total recorded investment	530	543
In process of foreclosure	$ 2	$ 2
Serious delinquency rate	1.00%	2.00%
Past due 90 days or more and still accruing interest	$ 7	$ 11
Non-accrual mortgage loans	0	0
Loans Insured or Guaranteed by US Government Authorities [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	18	19
Loans Insured or Guaranteed by US Government Authorities [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	6	6
Loans Insured or Guaranteed by US Government Authorities [Member] | Financing Receivables, 90 to 179 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	3	5
Loans Insured or Guaranteed by US Government Authorities [Member] | Financing Receivables, Greater than 180 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	$ 4	$ 6

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Allowance for Credit Losses (Individually Evaluated Impaired Loans) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Interest Income, Accrual Method	$ 0	$ 0	$ 0	$ 0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	$ 60	$ 68	$ 60	$ 69

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Derivatives and Hedging Activities (Derivatives in Statement of Condition) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives	$ 48,539	$ 53,665
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	154	97
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	127	188
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(71)	3
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	(125)	(182)
Derivative assets, net	83	100
Derivative liabilities, net	2	6
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	128	191
Derivative Asset, Collateral, Obligation to Return Cash, Offset	73	6
Variation Margin for Daily Settled Contracts		313
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives	46,828	52,120
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	125	77
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	105	151
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives	1,711	1,545
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	29	20
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	22	37
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives	1,372	1,407
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	29	20
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	21	37
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Collateralized Mortgage Backed Securities [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives	167	66
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	1	0
Mortgages [Member] | Not Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives	172	72
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	$ 0	$ 0

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Derivatives and Hedging Activities (Derivatives in Statement of Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives Designated as Hedging Instruments, Gain (Loss), Net	$ 7	$ 6	$ 7	$ 10
Derivatives Not Designated as Hedging Instruments, Gain (Loss), Net	7	(9)	26	(8)
Derivative Instruments, Other Gain (Loss)	0	0	1	1
Net gains (losses) on derivatives and hedging activities	14	(3)	34	3
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives Designated as Hedging Instruments, Gain (Loss), Net	7	6	7	10
Net Interest Settlements [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives Not Designated as Hedging Instruments, Gain (Loss), Net	(1)	(3)	(3)	(7)
Mortgages [Member] | Forward Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives Not Designated as Hedging Instruments, Gain (Loss), Net	0	0	(1)	1
Not Designated as Hedging Instrument, Economic Hedge [Member] | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives Not Designated as Hedging Instruments, Gain (Loss), Net	7	(6)	28	(1)
Collateralized Mortgage Backed Securities [Member] | Not Designated as Hedging Instrument, Economic Hedge [Member] | Forward Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives Not Designated as Hedging Instruments, Gain (Loss), Net	$ 1	$ 0	$ 2	$ (1)

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Derivatives and Hedging Activities (Derivatives in Statement of Income and Impact on Interest) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives	$ 86	$ 6	$ 209	$ 26
Net Fair Value Hedge Ineffectiveness	7	6	7	10
Effect on Net Interest Income	(55)	(38)	(101)	(72)
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(79)	0	(202)	(16)
Amortization and Accretion of Off-Market Derivatives	1	4	1	9
Available-for-sale Securities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives	55	(41)	207	(4)
Net Fair Value Hedge Ineffectiveness	7	8	4	14
Effect on Net Interest Income	(6)	(24)	(19)	(53)
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(48)	49	(203)	18
Advances [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives	31	(25)	156	8
Net Fair Value Hedge Ineffectiveness	2	1	2	2
Effect on Net Interest Income	13	(21)	12	(45)
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(29)	26	(154)	(6)
Consolidated Obligation Bonds [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives	0	72	(154)	22
Net Fair Value Hedge Ineffectiveness	(2)	(3)	1	(6)
Effect on Net Interest Income	(62)	7	(94)	26
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ (2)	$ (75)	$ 155	$ (28)

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Derivatives and Hedging Activities (Credit Risk Exposure) (Details) $ in Millions	Jun. 30, 2018 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Collateral Already Posted, Aggregate Fair Value	$ 0
Derivative, Net Liability Position, Aggregate Fair Value	$ 1

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Derivatives and Hedging Activities (Offsetting of Derivative Assets and Derivative Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Offsetting Assets and Liabilities [Line Items]
variation margin for daily settled contracts		$ 313
Derivative Asset, Fair Value, Gross Asset	$ 154	97
Derivative Liability, Fair Value, Gross Liability	127	188
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(71)	3
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	(125)	(182)
Derivative assets, net	83	100
Derivative liabilities, net	2	6
Over the Counter [Member]
Offsetting Assets and Liabilities [Line Items]
Derivative Asset, Fair Value, Gross Asset	151	88
Derivative Liability, Fair Value, Gross Liability	120	170
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(150)	(87)
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	(118)	(164)
Exchange Cleared [Member]
Offsetting Assets and Liabilities [Line Items]
Derivative Asset, Fair Value, Gross Asset	3	9
Derivative Liability, Fair Value, Gross Liability	7	18
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	79	90
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	(7)	(18)
Exchange Cleared [Member]
Offsetting Assets and Liabilities [Line Items]
Derivative assets, net	82	99
Derivative liabilities, net	0	0
Over the Counter [Member]
Offsetting Assets and Liabilities [Line Items]
Derivative assets, net	1	1
Derivative liabilities, net	$ 2	$ 6

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Consolidated Obligations Narrative (Details) - USD ($) $ in Billions	Jun. 30, 2018	Dec. 31, 2017
Schedule of Short-term and Long-term Debt [Line Items]
Obligation with Joint and Several Liability Arrangement, Amount Outstanding	$ 917.7	$ 898.3
FHLBanks [Member]
Schedule of Short-term and Long-term Debt [Line Items]
Obligation with Joint and Several Liability Arrangement, Amount Outstanding	$ 1,059.9	$ 1,034.2

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Consolidated Obligations Discount Notes (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Total	$ 43,122	$ 36,682
Consolidated Obligation Discount Notes [Member]
Short-term Debt [Line Items]
Par value	$ 43,241	$ 36,740
Par Value, Weighted Average Interest Rate	1.87%	1.20%
Discounts and concessions	$ (119)	$ (58)

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Consolidated Obligations Bonds (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total	$ 98,468	$ 98,893
Consolidated Obligation Bonds [Member]
Debt Instrument [Line Items]
Due in one year or less	$ 57,307	$ 50,077
Due in one year or less, Weighted Average Interest Rate	1.87%	1.32%
Due after one year through two years, Weighted Average Interest Rate	1.90%	1.43%
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two	$ 24,341	$ 32,249
Due after two years through three years	$ 3,034	$ 3,177
Due after two years through three years, Weighted Average Interest Rate	2.59%	2.84%
Due after three years through four years	$ 7,207	$ 7,422
Due after three years through four years, Weighted Average Interest Rate	1.71%	1.69%
Due after four years through five years	$ 2,124	$ 1,507
Due after four years through five years, Weighted Average Interest Rate	2.31%	2.42%
Thereafter	$ 4,917	$ 4,752
Thereafter, Weighted Average Interest Rate	3.37%	3.10%
Total par value	$ 98,930	$ 99,184
Total par value, Weighted Average Interest Rate	1.97%	1.54%
Premiums	$ 168	$ 193
Discounts and concessions	(52)	(60)
Fair value hedging adjustments	(578)	(424)
Total	$ 98,468	$ 98,893

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Consolidated Obligations Bonds by Call Features (Details) - Consolidated Obligation Bonds [Member] - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total par value	$ 98,930	$ 99,184
Noncallable or Nonputable [Member]
Debt Instrument [Line Items]
Total par value	94,742	97,196
Callable [Member]
Debt Instrument [Line Items]
Total par value	$ 4,188	$ 1,988

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Capital (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Stock, Par or Stated Value Per Share	$ 100		$ 100		$ 100
Number of Subclasses of Capital Stock	2		2
Redemption Period Under FHLBank Capital Plan			5 years
Written Notice Period Required to Repurchase Excess Membership Capital Stock			15 days
Net payments for repurchases/redemptions of mandatorily redeemable capital stock	$ (19,000,000)	$ (32,000,000)	$ (51,000,000)	$ (212,000,000)
Net Shares Reclassified to Mandatorily Redeemable Capital Stock, Value	36,000,000	$ 18,000,000	39,000,000	$ 28,000,000
Excess Capital	$ 0		$ 0		$ 0
Minimum Capital Stock Required to be Held by Members as a Percent of Total Assets at Preceeding Fiscal Year End, Subject to Cap and Floor	0.12%		0.12%
Activity Based Capital Stock Required by Members as a Percent of Total Advances and Mortgage Loans Oustanding as Disclosed in the Statement of Condition	4.00%		4.00%
Maximum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Federal Home Loan Banks, Membership Requirements, Capital Stock	$ 10,000,000		$ 10,000,000
Minimum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Federal Home Loan Banks, Membership Requirements, Capital Stock	$ 10,000		10,000
Captive Insurance Companies [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Net payments for repurchases/redemptions of mandatorily redeemable capital stock			$ (148,000,000)

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Capital (Rollforward of MRCS) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
MRCS [Abstract]
Beginning Balance	$ 356	$ 494	$ 385	$ 664
Net Shares Reclassified to Mandatorily Redeemable Capital Stock, Value	36	18	39	28
Financial Instruments Subject To Mandatory Redemption Repurchases	(19)	(32)	(51)	(212)
Ending Balance	$ 373	$ 480	$ 373	$ 480

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Capital (Mandatorily Redeemable Capital Stock) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
MRCS [Abstract]
Financial Instruments Subject to Mandatory Redemption, Redeemable within One year	$ 0		$ 0			$ 4
Financial Instruments Subject to Mandatory Redemption, Redeemable in Year Two	2		2			2
Financial Instruments Subject to Mandatory Redemption, Redeemable in Year Three	1		1			0
Financial Instruments Subject to Mandatory Redemption, Redeemable in Year Four	11		11			1
Financial Instruments Subject to Mandatory Redemption, Redeemable in Year Five	26		26			22
Financial Instruments Subject to Mandatory Redemption, Redeemable After Year Five	317		317			341
Financial Instruments Subject to Mandatory Redemption, Past Contractual Redemption Date, Due to Outstanding Activity	16		16			15
Mandatorily redeemable capital stock	373	$ 480	373	$ 480	$ 356	$ 385	$ 494	$ 664
Interest Expense, Capital Securities	$ 5	$ 4	$ 9	$ 9

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Capital (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ 7,021	$ 7,401
Other comprehensive income (loss) before reclassifications, Net unrealized losses	$ (17)	$ 41	28	105
Total other comprehensive income (loss)	(17)	42	28	107
Ending Balance	7,539	7,396	7,539	7,396
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	163	50	118	(14)
Other comprehensive income (loss) before reclassifications, Net unrealized losses	(17)	41	28	105
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax		0		0
Total other comprehensive income (loss)	(17)	41	28	105
Ending Balance	146	91	146	91
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(4)	(3)	(4)	(4)
Other comprehensive income (loss) before reclassifications, Net unrealized losses	0	0	0	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax		1		2
Total other comprehensive income (loss)	0	1	0	2
Ending Balance	(4)	(2)	(4)	(2)
Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	159	47	114	(18)
Other comprehensive income (loss) before reclassifications, Net unrealized losses	(17)	41	28	105
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax		1		2
Total other comprehensive income (loss)	(17)	42	28	107
Ending Balance	$ 142	$ 89	$ 142	$ 89

XML

Capital (Regulatory Capital Requirements) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Capital [Abstract]
Number of Finance Agency Regulatory Capital Requirements	3
Federal Home Loan Bank, Risk-Based Capital, Required	$ 1,178	$ 1,041
Federal Home Loan Bank, Risk-Based Capital, Actual	7,770	7,292
Federal Home Loan Bank, Regulatory Capital, Required	6,039	5,804
Federal Home Loan Bank, Regulatory Capital, Actual	7,770	7,292
Federal Home Loan Bank, Leverage Capital, Required	7,549	7,255
Federal Home Loan Bank, Leverage Capital, Actual	$ 11,656	$ 10,937
Regulatory Capital Ratio, Required	4.00%	4.00%
Federal Home Loan Bank, Regulatory Capital Ratio, Actual	5.15%	5.03%
Leverage Ratio, Required	5.00%	5.00%
Federal Home Loan Bank, Leverage Ratio, Actual	7.72%	7.54%
Weight Applied to Permanent Capital in Computing Leverage Ratio	1.5
Weight Applied to Nonpermanent Capital in Computing Leverage Ratio	1.0

XML

Capital Retained Earnings (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Capital [Abstract]
Quarterly Net Income Allocated to Restricted Retained Earnings	20.00%
Percent of Average Balance of Outstanding Consolidated Obligations Prescribed per the Joint Capital Enhancement Agreement For Each Previous Quarter	1.00%
Retained Earnings, Appropriated	$ 384	$ 335

XML

Fair Value (Carrying Value and Fair Value of Financial Instruments) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
variation margin for daily settled contracts			$ 313
Assets
Cash and due from banks	$ 201		503
Trading securities	937		1,177
Available-for-sale securities	19,451		20,796
Held-to-maturity securities	3,295		3,628
Held-to-Maturity Securities, Fair Value	3,325		3,686
Loans to Other Federal Home Loan Banks	0		0
Accrued interest receivable	305		223
Derivative assets, net	83		100
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(71)		3
Liabilities
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	125		182
Mandatorily redeemable capital stock	(373)	$ (356)	(385)	$ (480)	$ (494)	$ (664)
Accrued interest payable	(238)		(210)
Derivative liabilities, net	(2)		(6)
Reported Value Measurement [Member]
Assets
Cash and due from banks	201		503
Interest-bearing deposits	1		1
Securities purchased under agreements to resell	4,900		4,600
Federal funds sold	4,435		4,250
Trading securities	937		1,177
Available-for-sale securities	19,451		20,796
Held-to-maturity securities	3,295		3,628
Advances	109,963		102,613
Mortgage loans held for portfolio, net	7,310		7,096
Accrued interest receivable	305		223
Derivative assets, net	83		100
Other assets	29		28
Liabilities
Deposits	(1,028)		(1,107)
Federal Home Loan Bank Borrowings, Fair Value Disclosure			(600)
Federal Home Loan Bank, Consolidated Obligations Fair Value Disclosure	(141,590)		(135,575)
Mandatorily redeemable capital stock	(373)		(385)
Accrued interest payable	(238)		(210)
Derivative liabilities, net	(2)		(6)
Fair Value [Member]
Assets
Cash and due from banks	201		503
Interest-bearing deposits	1		1
Securities purchased under agreements to resell	4,900		4,600
Federal funds sold	4,435		4,250
Trading securities	937		1,177
Available-for-sale securities	19,451		20,796
Held-to-Maturity Securities, Fair Value	3,325		3,686
Advances	110,031		102,708
Mortgage loans held for portfolio, net	7,252		7,188
Accrued interest receivable	305		223
Derivative assets, net	83		100
Other assets	29		28
Liabilities
Deposits	(1,028)		(1,107)
Federal Home Loan Bank Borrowings, Fair Value Disclosure			(600)
Federal Home Loan Bank, Consolidated Obligations Fair Value Disclosure	(141,658)		(135,824)
Mandatorily redeemable capital stock	(373)		(385)
Accrued interest payable	(238)		(210)
Derivative liabilities, net	(2)		(6)
Fair Value, Level 1 [Member]
Assets
Cash and due from banks	201		503
Interest-bearing deposits	0		0
Securities purchased under agreements to resell	0		0
Federal funds sold	0		0
Trading securities	0		0
Available-for-sale securities	0		0
Held-to-Maturity Securities, Fair Value	0		0
Advances	0		0
Mortgage loans held for portfolio, net	0		0
Accrued interest receivable	0		0
Derivative assets, net	0		0
Other assets	29		28
Liabilities
Deposits	0		0
Federal Home Loan Bank Borrowings, Fair Value Disclosure			0
Federal Home Loan Bank, Consolidated Obligations Fair Value Disclosure	0		0
Mandatorily redeemable capital stock	(373)		(385)
Accrued interest payable	0		0
Derivative liabilities, net	0		0
Fair Value, Level 2 [Member]
Assets
Cash and due from banks	0		0
Interest-bearing deposits	1		1
Securities purchased under agreements to resell	4,900		4,600
Federal funds sold	4,435		4,250
Trading securities	937		1,177
Available-for-sale securities	19,451		20,796
Held-to-Maturity Securities, Fair Value	3,314		3,674
Advances	110,031		102,708
Mortgage loans held for portfolio, net	7,189		7,124
Accrued interest receivable	305		223
Derivative assets, net	154		97
Other assets	0		0
Liabilities
Deposits	(1,028)		(1,107)
Federal Home Loan Bank Borrowings, Fair Value Disclosure			(600)
Federal Home Loan Bank, Consolidated Obligations Fair Value Disclosure	(141,658)		(135,824)
Mandatorily redeemable capital stock	0		0
Accrued interest payable	(238)		(210)
Derivative liabilities, net	(127)		(188)
Fair Value, Level 3 [Member]
Assets
Cash and due from banks	0		0
Interest-bearing deposits	0		0
Securities purchased under agreements to resell	0		0
Federal funds sold	0		0
Trading securities	0		0
Available-for-sale securities	0		0
Held-to-Maturity Securities, Fair Value	11		12
Advances	0		0
Mortgage loans held for portfolio, net	63		64
Accrued interest receivable	0		0
Derivative assets, net	0		0
Other assets	0		0
Liabilities
Deposits	0		0
Federal Home Loan Bank Borrowings, Fair Value Disclosure			0
Federal Home Loan Bank, Consolidated Obligations Fair Value Disclosure	0		0
Mandatorily redeemable capital stock	0		0
Accrued interest payable	0		0
Derivative liabilities, net	0		0
Consolidated Obligation Discount Notes [Member] | Reported Value Measurement [Member]
Liabilities
Discount notes	(43,122)		(36,682)
Consolidated Obligation Discount Notes [Member] | Fair Value [Member]
Liabilities
Discount notes	(43,119)		(36,674)
Consolidated Obligation Discount Notes [Member] | Fair Value, Level 1 [Member]
Liabilities
Discount notes	0		0
Consolidated Obligation Discount Notes [Member] | Fair Value, Level 2 [Member]
Liabilities
Discount notes	(43,119)		(36,674)
Consolidated Obligation Discount Notes [Member] | Fair Value, Level 3 [Member]
Liabilities
Discount notes	0		0
Consolidated Obligation Bonds [Member] | Reported Value Measurement [Member]
Liabilities
Bonds, Fair Value	(98,468)		(98,893)
Consolidated Obligation Bonds [Member] | Fair Value [Member]
Liabilities
Bonds, Fair Value	(98,539)		(99,150)
Consolidated Obligation Bonds [Member] | Fair Value, Level 1 [Member]
Liabilities
Bonds, Fair Value	0		0
Consolidated Obligation Bonds [Member] | Fair Value, Level 2 [Member]
Liabilities
Bonds, Fair Value	(98,539)		(99,150)
Consolidated Obligation Bonds [Member] | Fair Value, Level 3 [Member]
Liabilities
Bonds, Fair Value	$ 0		$ 0

XML

Fair Value (Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
variation margin for daily settled contracts		$ 313
Trading securities	$ 937	1,177
Available-for-sale securities	19,451	20,796
Advances, Fair Value Disclosure	15	0
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(71)	3
Derivative assets, net	83	100
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	125	182
Derivative liabilities, net	(2)	(6)
Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
Derivative assets, net	0	0
Other assets	29	28
Derivative liabilities, net	0	0
Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	937	1,177
Available-for-sale securities	19,451	20,796
Derivative assets, net	154	97
Other assets	0	0
Derivative liabilities, net	(127)	(188)
Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
Derivative assets, net	0	0
Other assets	0	0
Derivative liabilities, net	0	0
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(71)	3
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	125	182
Fair Value, Measurements, Recurring [Member] | Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
Advances, Fair Value Disclosure	0
Other assets	29	28
Total recurring assets	29	28
Total recurring liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	937	1,177
Available-for-sale securities	19,451	20,796
Advances, Fair Value Disclosure	15
Other assets	0	0
Total recurring assets	20,557	22,070
Total recurring liabilities	(127)	(188)
Fair Value, Measurements, Recurring [Member] | Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
Advances, Fair Value Disclosure	0
Other assets	0	0
Total recurring assets	0	0
Total recurring liabilities	0	0
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(71)	3
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	125	182
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets, net	0	0
Derivative liabilities, net	0	0
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets, net	154	97
Derivative liabilities, net	126	(188)
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets, net	0	0
Derivative liabilities, net	0	0
Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, net	0
Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, net	1
Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, net	0
Other U.S. obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	182	197
Available-for-sale securities	2,820	3,099
Other U.S. obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
Other U.S. obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	182	197
Available-for-sale securities	2,820	3,099
Other U.S. obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
GSE obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	57	260
Available-for-sale securities	1,039	1,236
GSE obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
GSE obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	57	260
Available-for-sale securities	1,039	1,236
GSE obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
State or local housing agency obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	906	934
State or local housing agency obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
State or local housing agency obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	906	934
State or local housing agency obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Other non-MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	265	272
Available-for-sale securities	272	278
Other non-MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
Other non-MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	265	272
Available-for-sale securities	272	278
Other non-MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	937	1,177
Available-for-sale securities	19,451	20,796
Derivative assets, net	83	100
Other assets	29	28
Derivative liabilities, net	(2)	(6)
Fair Value [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	937	1,177
Available-for-sale securities	19,451	20,796
Advances, Fair Value Disclosure	15
Other assets	29	28
Total recurring assets	20,515	22,101
Total recurring liabilities	(2)	(6)
Fair Value [Member] | Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets, net	83	100
Derivative liabilities, net	(1)	(6)
Fair Value [Member] | Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, net	1
Fair Value [Member] | Other U.S. obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	182	197
Available-for-sale securities	2,820	3,099
Fair Value [Member] | GSE obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	57	260
Available-for-sale securities	1,039	1,236
Fair Value [Member] | State or local housing agency obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	906	934
Fair Value [Member] | Other non-MBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	265	272
Available-for-sale securities	272	278
Single Family [Member] | Other U.S. obligations MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,097	3,726
Single Family [Member] | Other U.S. obligations MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Single Family [Member] | Other U.S. obligations MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,097	3,726
Single Family [Member] | Other U.S. obligations MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Single Family [Member] | GSE MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	885	988
Single Family [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Single Family [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	885	988
Single Family [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Single Family [Member] | Fair Value [Member] | Other U.S. obligations MBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	4,097	3,726
Single Family [Member] | Fair Value [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	885	988
Multifamily [Member] | GSE MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	433	448
Available-for-sale securities	9,432	10,535
Multifamily [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
Multifamily [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	433	448
Available-for-sale securities	9,432	10,535
Multifamily [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Available-for-sale securities	0	0
Multifamily [Member] | Fair Value [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	433	448
Available-for-sale securities	$ 9,432	$ 10,535

XML

Fair Value (Fair Value on a Non-Recurring Basis) (Details) - Fair Value, Level 3 [Member] - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired mortgage loans held for portfolio	$ 63	$ 64
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired mortgage loans held for portfolio	$ 1	$ 7

XML

Fair Value (Fair Value Difference Between Fair Value and Remaining Contractual Principal Balance Outstanding) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Option, Quantitative Disclosures [Line Items]
Federal Home Loan Bank, Advances, Par Value	$ 110,182	$ 102,678
Advances, Fair Value Disclosure	15	$ 0
Federal Home Loan Bank, Advances, Valuation Adjustments under Fair Value Option	0
Reported Value Measurement [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Federal Home Loan Bank, Advances, Par Value	$ 15

XML

Commitments and Contingencies (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) Institutions	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Institutions	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Obligation with Joint and Several Liability Arrangement, Amount Outstanding	$ 917,700		$ 917,700		$ 898,300
Other liabilities	56		56		53
FLA Balance For All Master Commitments	108		108		104
Gain (Loss) Related to Litigation Settlement	0	$ 0	0	$ 21
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring Within One Year	9,111		9,111
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring After One Year	166		166
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	9,277		$ 9,277		8,594
Standby Letters Of Credit Original Terms			P13Y
Other liabilities	2		$ 2		3
Financial Standby Letter of Credit [Member]
Loss Contingencies [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring Within One Year	117		117
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring After One Year	587		587
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 704		$ 704		755
Original Expiration Periods Up To			7 years
Number of Housing Authorities For Which the Bank Has Standby Bond Purchase Agreements | Institutions	7		7
Fees Generated From Guarantees Related to Standby Bond Purchase Agreements	$ 0	$ 0	$ 1	$ 1
Commitments to Issue Bonds [Member]
Loss Contingencies [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring Within One Year	264		264		0
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring After One Year	0		0
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	264		264		0
Loan Origination Commitments [Member]
Loss Contingencies [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring Within One Year	779		779
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring After One Year	1		1
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	780		780		1,138
Mortgages [Member] | Forward Contracts [Member]
Loss Contingencies [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring Within One Year	172		172
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring After One Year	0		0
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	172		$ 172		72
Period of Delivery Commitments			45 days
standby letters of credit issuance commitments [Domain]
Loss Contingencies [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 53		$ 53		$ 7

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Activities with Stockholders (Transactions with Directors' Financial Institutions) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Advances	$ 109,963	$ 102,613
Mortgage Loans	7,311	7,098
Deposits, Domestic	1,028	1,107
Capital Stock	5,420	5,068
Director [Member]
Related Party Transaction [Line Items]
Advances	$ 5,134	$ 6,036
Advances, Percent	5.00%	6.00%
Mortgage Loans	$ 86	$ 68
Mortgage Loans, Percent	1.00%	1.00%
Deposits, Domestic	$ 11	$ 39
Deposits, Percent	1.00%	4.00%
Capital Stock	$ 256	$ 297
Capital Stock, Percent	4.00%	5.00%

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Activities with Stockholders (Business Concentrations) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Advances	$ 109,963		$ 109,963		$ 102,613
Mortgage Loans	7,311		7,311		7,098
Interest Income on Advances	626	$ 381	1,128	$ 714
Wells Fargo Bank N.A. [Member]
Related Party Transaction [Line Items]
Transfer of PFI Rights and Obligations	27
Capital Stock	$ 2,052		$ 2,052		$ 1,843
Capital Stock Percentage	35.00%		35.00%		34.00%
Advances	$ 51,025		$ 51,025		$ 45,825
Mortgage Loans	27		27		0
Interest Income on Advances			550		834
Superior Guaranty Insurance Company [Member]
Related Party Transaction [Line Items]
Capital Stock	$ 19		$ 19		$ 22
Capital Stock Percentage	0.00%		0.00%		0.00%
Advances	$ 0		$ 0		$ 0
Mortgage Loans	463		463		520
Interest Income on Advances			0		0
Wells Fargo Northwest NA [Member] [Member]
Related Party Transaction [Line Items]
Capital Stock					$ 1
Capital Stock Percentage					0.00%
Advances					$ 0
Mortgage Loans					30
Interest Income on Advances					0
Principal Owner [Member]
Related Party Transaction [Line Items]
Capital Stock	$ 2,071		$ 2,071		$ 1,866
Capital Stock Percentage	35.00%		35.00%		34.00%
Advances	$ 51,025		$ 51,025		$ 45,825
Mortgage Loans	$ 490		490		550
Interest Income on Advances			$ 550		$ 834
Stockholders' Equity, Total [Member] | Stockholders' Capital Stock Outstanding Concenetration Risk [Member] | Minimum [Member]
Related Party Transaction [Line Items]
Business Concentration Percentage			10.00%

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Activities with Other FHLBanks (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Schedule of Other Transactions [Line Items]
Loans from Other Federal Home Loan Banks	$ 0	$ 0	$ 600	$ 600
Payments for Federal Home Loan Bank Advances	157,016	130,163
Payments for Federal Home Loan Bank Advances	1,600
Proceeds from Federal Home Loan Bank Loans	(1,600)
Loans to Other Federal Home Loan Banks	0		0
Federal Home Loan Bank, Advances, Premium	44		53
Proceeds from Federal Home Loan Bank Borrowings		0
Repayments of Federal Home Loan Bank Borrowings		(600)
Federal Home Loan Bank of Atlanta [Member]
Schedule of Other Transactions [Line Items]
Loans from Other Federal Home Loan Banks	0		200
Proceeds from Federal Home Loan Bank Borrowings	0
Repayments of Federal Home Loan Bank Borrowings	(200)
Federal Home Loan Bank of Boston [Member]
Schedule of Other Transactions [Line Items]
Loans from Other Federal Home Loan Banks	0		400
Payments for Federal Home Loan Bank Advances	800
Proceeds from Federal Home Loan Bank Loans	(800)
Loans to Other Federal Home Loan Banks	0		0
Proceeds from Federal Home Loan Bank Borrowings	0
Repayments of Federal Home Loan Bank Borrowings	(400)
Federal Home Loan Bank of San Francisco [Member]
Schedule of Other Transactions [Line Items]
Payments for Federal Home Loan Bank Advances	300	0
Proceeds from Federal Home Loan Bank Loans	(300)	(200)
Loans to Other Federal Home Loan Banks	0	$ 0	0	$ 200
Federal Home Loan Bank of Dallas [Member]
Schedule of Other Transactions [Line Items]
Payments for Federal Home Loan Bank Advances	500
Proceeds from Federal Home Loan Bank Loans	(500)
Loans to Other Federal Home Loan Banks	0		$ 0
Federal Home Loan Bank of Chicago [Member]
Schedule of Other Transactions [Line Items]
Payments for Federal Home Loan Bank Advances	37
Federal Home Loan Bank, Advances, Premium	$ 1