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

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

For the transition period from                                    to                                   

Commission File Number: 000-51395

FEDERAL HOME LOAN BANK OF PITTSBURGH

(Exact name of registrant as specified in its charter)

Federally Chartered Corporation	25-6001324
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)
601 Grant Street Pittsburgh, PA 15219  (Address of principal executive offices)	15219  (Zip Code)

(412) 288-3400

(Registrant’s telephone number, including area code)

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 []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 during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  [x] Yes [] No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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.

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

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. []

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  [] Yes [x] No

There were 38,396,427 shares of common stock with a par value of $100 per share outstanding at July 31, 2018.

FEDERAL HOME LOAN BANK OF PITTSBURGH

TABLE OF CONTENTS

Part I - FINANCIAL INFORMATION	1
Item 1: Financial Statements (unaudited)	43
Notes to Financial Statements (unaudited)	50
Item 2: Management's Discussion and Analysis of Financial Condition and Results of Operations	1
Risk Management	23
Item 3: Quantitative and Qualitative Disclosures about Market Risk	90
Item 4: Controls and Procedures	90
Part II - OTHER INFORMATION	90
Item 1: Legal Proceedings	90
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
Signature	91

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PART I - FINANCIAL INFORMATION

Item 2: Management's Discussion and Analysis of Financial Condition and Results of Operations

Forward-Looking Information

Statements contained in this Form 10-Q, including statements describing the objectives, projections, estimates, or predictions of the future of the Federal Home Loan Bank of Pittsburgh (the Bank), may be “forward-looking statements.” These statements may use forward-looking terms, such as “anticipates,” “believes,” “could,” “estimates,” “may,” “should,” “will,” or their negatives or other variations on these terms. The Bank cautions that, by their nature, forward-looking statements involve risk or uncertainty and that actual results could differ materially from those expressed or implied in these forward-looking statements or could affect the extent to which a particular objective, projection, estimate, or prediction is realized. These forward-looking statements involve risks and uncertainties including, but not limited to, the following: economic and market conditions, including, but not limited to real estate, credit and mortgage markets; volatility of market prices, rates, and indices related to financial instruments; political, legislative, regulatory, litigation, or judicial events or actions; changes in assumptions used in the other-than-temporary impairment (OTTI) process; risks related to mortgage-backed securities (MBS); changes in the assumptions used in the allowance for credit losses; changes in the Bank’s capital structure; changes in the Bank’s capital requirements; membership changes; changes in the demand by Bank members for Bank advances; an increase in advances’ prepayments; competitive forces, including the availability of other sources of funding for Bank members; changes in investor demand for consolidated obligations and/or the terms of interest rate exchange agreements and similar agreements; changes in the Federal Home Loan Bank (FHLBank) System’s debt rating or the Bank’s rating; the ability of the Bank to introduce new products and services to meet market demand and to manage successfully the risks associated with new products and services; the ability of each of the other FHLBanks to repay the principal and interest on consolidated obligations for which it is the primary obligor and with respect to which the Bank has joint and several liability; applicable Bank policy requirements for retained earnings and the ratio of the market value of equity to par value of capital stock; the Bank’s ability to maintain adequate capital levels (including meeting applicable regulatory capital requirements); business and capital plan adjustments and amendments; technology and cyber-security risks; and timing and volume of market activity.

This Management's Discussion and Analysis (MD&A) should be read in conjunction with the Bank's unaudited interim financial statements and notes and any Risk Factors included in Part II, Item 1A of this Form 10-Q, as well as the Bank's 2017 Form 10-K (2017 Form 10-K), including Risk Factors included in Item 1A of that report.

Executive Summary

Overview. The Bank's financial condition and results of operations are influenced by global and national economies, local economies within its three-state district, and the conditions in the financial, housing and credit markets; all of which impact the interest rate environment.

The interest rate environment significantly impacts the Bank's profitability. Net interest income is affected by several external factors, including market interest rate levels and volatility, credit spreads and the general state of the economy. To manage interest rate risk, the Bank executes interest-rate exchange agreements in which 1-month or 3-month LIBOR is received (advances) or paid (debt). Short-term interest rates also directly affect the Bank's earnings on invested capital. Finally, the Bank's mortgage-related assets make it sensitive to changes in mortgage rates. The Bank earns relatively narrow spreads between yields on assets (particularly advances, its largest asset) and the rates paid on corresponding liabilities.

The Bank's earnings are affected not only by rising or falling interest rates but also by the particular path and volatility of changes in market interest rates and the prevailing shape of the yield curve. The flattening of the yield curve tends to compress the Bank's net interest margin, while steepening of the curve offers better opportunities to purchase assets with wider net interest spreads. The performance of the Bank's mortgage asset portfolios is particularly affected by shifts in the 10-year maturity range of the yield curve, which is the point that heavily influences mortgage rates and potential refinancings. Yield curve shape can also influence the pace at which borrowers refinance or prepay their existing loans, as borrowers may select shorter-duration mortgage products.

Results of Operations. The Bank's net income for the second quarter of 2018 was $91.6 million compared to $88.0 million for the second quarter of 2017. This $3.6 million increase was driven primarily by higher net interest income, partially offset by higher total other expense. Net interest income was $117.1 million for the second quarter of 2018, compared to $110.4

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million in the second quarter of 2017. Interest income and expense were impacted by the rising interest rate environment. The net interest margin was 49 basis points and 47 basis points for the second quarter of 2018 and 2017, respectively.

For the six months ended June 30, 2018, net income was $170.5 million compared to $174.8 million for the same prior-year period, a decrease of $4.3 million. The decrease was primarily due to a decrease in total other noninterest income, partially offset by higher net interest income. Noninterest income was $9.3 million in the first six months of 2018, compared to $19.7 million in the same period of 2017. Net interest income was $226.7 million for the first six months of 2018, an increase of $8.0 million compared to $218.7 million in the same period in 2017 and reflected the rising interest rate environment during the first half of 2018. The net interest margin was 48 and 46 basis points for the first six months of 2018 and 2017, respectively.

Financial Condition. Advances. Advances totaled $76.3 billion at June 30, 2018, an increase of $2.0 billion compared to $74.3 billion at December 31, 2017. It is not uncommon for the Bank to experience variances in the overall advance portfolio driven primarily by changes in member needs. While the advance portfolio increased compared to December 31, 2017, the term of advances decreased slightly. At June 30, 2018, approximately 57% of the par value of advances in the portfolio had a remaining maturity of more than one year, compared to 58% at December 31, 2017.

The ability to grow and/or maintain the advance portfolio is affected by, among other things, the following: (1) the liquidity demands of the Bank's borrowers; (2) the composition of the Bank's membership; (3) members' regulatory requirements; (4) current and future credit market conditions; (5) housing market trends; (6) the shape of the yield curve and (7) advance pricing.

Liquidity. At June 30, 2018, the Bank held $8.8 billion of liquid assets compared to $10.2 billion at December 31, 2017. The Bank maintains its liquidity to meet member borrowing needs and is comprised of cash, interest-bearing deposits, Federal funds sold, securities purchased under agreements to resell, and U.S. Treasury and Agency securities classified as tradinginvestments.

Available-for-Sale (AFS) and Held-to-Maturity (HTM) Investments. The Bank also maintainsinvestments classified as AFS and HTM to enhance earnings. At June 30, 2018, the Bank held $12.1 billion in its investment portfolio compared to $10.9 billion at December 31, 2017. The change in these portfolios was primarily due to the Bank using cash to purchase certificates of deposit.

Consolidated Obligations. The Bank's consolidated obligations totaled $95.7 billion at June 30, 2018, an increase of $2.0 billion from December 31, 2017. At June 30, 2018, bonds represented 72% of the Bank's consolidated obligations, compared with 60% at December 31, 2017. Discount notes represented 28% of the Bank's consolidated obligations at June 30, 2018 compared with 40% at year-end 2017. The overall increase in consolidated obligations is largely consistent with the changes in advances and total assets.

Capital Position and Regulatory Requirements. Total capital at June 30, 2018 was $5.3 billion, compared to $4.9 billion at December 31, 2017. Total retained earnings at June 30, 2018 were $1,215.7 million, up $57.8 million from $1,157.9 million at year-end 2017, reflecting the Bank's net income for the first half of 2018, which was partially offset by dividends paid. Accumulated other comprehensive income (AOCI) was $100.7 million at June 30, 2018, a decrease of $10.2 million from December 31, 2017. This decrease was primarily due to changes in the fair values of securities within the AFS portfolio.

In February, April and July 2018, the Bank paid quarterly dividends of 6.75% annualized on activity stock and 3.5% annualized on membership stock. These dividends were based on stockholders' average balances for the fourth quarter of 2017 (February dividend), the first quarter of 2018 (April dividend), and the second quarter of 2018 (July dividend).

The Bank met all of its capital requirements as of June 30, 2018, and in the Federal Housing Finance Agency's (Finance Agency) most recent determination, as of March 31 2018, the Bank was deemed "adequately capitalized."

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Financial Highlights

The following are the financial highlights of the Bank. The Condensed Statements of Condition as of December 31, 2017 have been derived from the Bank's audited financial statements. Financial highlights for the other quarter-end periods have been derived from the Bank's unaudited financial statements.

Condensed Statements of Income

	Three months ended
	June 30,			March 31,			December 31,			September 30,			June 30,
(in millions)	2018			2018			2017			2017			2017
Net interest income	$	117.1		$	109.6		$	107.5		$	109.3		$	110.4
Provision (benefit) for credit losses	0.4			2.4			0.2			0.1			(0.1		)
Other noninterest income	7.6			1.7			6.0			6.5			7.0
Other expense	22.5			21.2			23.4			22.5			19.7
Income before assessments	101.8			87.7			89.9			93.2			97.8
Affordable Housing Program (AHP) assessment (1)	10.2			8.8			9.0			9.3			9.8
Net income	$	91.6		$	78.9		$	80.9		$	83.9		$	88.0
Dividends	$	56.1		$	56.6		$	42.5		$	41.9		$	42.0
Dividend payout ratio (2)	61.26		%	71.67		%	52.47		%	49.95		%	47.76		%
Return on average equity	7.41		%	6.63		%	6.76		%	6.93		%	7.49		%
Return on average assets	0.38		%	0.33		%	0.33		%	0.34		%	0.37		%
Net interest margin (3)	0.49		%	0.47		%	0.45		%	0.45		%	0.47		%
Regulatory capital ratio (4)	5.08		%	5.05		%	4.84		%	4.83		%	4.78		%
GAAP capital ratio (5)	5.17		%	5.15		%	4.94		%	4.95		%	4.89		%
Total average equity to average assets	5.13		%	5.05		%	4.95		%	4.90		%	4.88		%

Notes:

⁽¹⁾ Although the Bank is not subject to federal or state income taxes, by regulation, the Bank is required to allocate 10% of its income before assessments to fund the AHP.

⁽²⁾ Represents dividends paid as a percentage of net income for the respective periods presented.

⁽³⁾ Net interest margin is net interest income before provision for credit losses as a percentage of average interest-earning assets.

⁽⁴⁾ Regulatory capital ratio is the sum of period-end capital stock, mandatorily redeemable capital stock and retained earnings as a percentage of total assets at period-end.

⁽⁵⁾ GAAP capital ratio is the sum of capital stock, retained earnings and AOCI as a percentage of total assets at period-end.

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	Six months ended
(in millions)	June 30, 2018			June 30, 2017
Net interest income	$	226.7		$	218.7
Provision (benefit) for credit losses	2.8			(0.1		)
Other noninterest income	9.3			19.7
Other expense	43.7			44.2
Income before assessments	189.5			194.3
AHP assessment (1)	19.0			19.5
Net income	$	170.5		$	174.8
Dividends	$	112.7		$	83.6
Dividend payout ratio (2)	66.08		%	47.83		%
Return on average equity	7.02		%	7.50		%
Return on average assets	0.36		%	0.36		%
Net interest margin (3)	0.48		%	0.46		%
Regulatory capital ratio (4)	5.08		%	4.78		%
GAAP capital ratio (5)	5.17		%	4.89		%
Total average equity to average assets	5.09		%	4.86		%

Notes:

⁽¹⁾ Although the Bank is not subject to federal or state income taxes, by regulation, the Bank is required to allocate 10% of its income before assessments to fund the AHP.

⁽²⁾ Represents dividends paid as a percentage of net income for the respective periods presented.

⁽³⁾ Net interest margin is net interest income before provision for credit losses as a percentage of average interest-earning assets.

⁽⁴⁾ Regulatory capital ratio is the sum of period-end capital stock, mandatorily redeemable capital stock, and retained earnings as a percentage of total assets at period-end.

⁽⁵⁾ GAAP capital ratio is the sum of capital stock, retained earnings and AOCI as a percentage of total assets at period-end.

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Condensed Statements of Condition

	June 30,		March 31,		December 31,		September 30,		June 30,
(in millions)	2018		2018		2017		2017		2017
Cash and due from banks	$	161.9	$	252.6	$	3,415.0	$	2,068.7	$	4,010.4
Investments (1)	20,752.4		18,487.2		17,757.1		19,528.9		18,943.1
Advances	76,340.0		70,278.0		74,279.8		74,228.0		74,080.2
Mortgage loans held for portfolio, net	4,171.5		4,018.8		3,923.1		3,763.3		3,537.5
Total assets	101,814.3		93,369.3		99,663.0		99,864.6		100,828.6
Consolidated obligations:
Discount notes	26,988.9		23,905.7		36,193.3		38,877.0		31,928.8
Bonds	68,681.9		63,706.0		57,533.7		55,140.2		62,910.9
Total consolidated obligations (2)	95,670.8		87,611.7		93,727.0		94,017.2		94,839.7
Deposits	551.1		612.4		538.1		627.1		590.4
Mandatorily redeemable capital stock	4.5		4.8		5.1		5.6		5.0
AHP payable	95.3		93.1		91.6		88.7		86.1
Total liabilities	96,547.4		88,564.1		94,735.5		94,924.7		95,896.4
Capital stock - putable	3,950.5		3,528.4		3,658.7		3,696.9		3,732.6
Unrestricted retained earnings	899.1		881.9		875.4		853.1		827.9
Restricted retained earnings	316.6		298.3		282.5		266.3		249.5
AOCI	100.7		96.6		110.9		123.6		122.2
Total capital	5,266.9		4,805.2		4,927.5		4,939.9		4,932.2

Notes:

⁽¹⁾ Includes trading, AFS and HTM investment securities, Federal funds sold, securities purchased under agreements to resell, and interest-bearing deposits.

⁽²⁾ Aggregate FHLBank System-wide consolidated obligations (at par) were $1,059.9 billion at June 30, 2018, $1,019.2 billion at March 31, 2018, $1,034.3 billion at December 31, 2017, $1,028.7 billion at September 30, 2017 and $1,011.5 billion at June 30, 2017.

Earnings Performance

The following is Management's Discussion and Analysis of the Bank's earnings performance for the three and six months ended June 30, 2018 and 2017, which should be read in conjunction with the Bank's unaudited interim financial statements included in this Form 10-Q as well as the audited financial statements included in Item 8. Financial Statements and Supplementary Financial Data in the Bank's 2017 Form 10-K.

Summary of Financial Results

Net Income and Return on Average Equity. The Bank’s net income totaled $91.6 million for the second quarter of 2018, compared to $88.0 million for the second quarter of 2017. This $3.6 million increase was driven primarily by higher net interest income, partially offset by higher total other expense. Net interest income was $117.1 million for the second quarter of 2018, compared to $110.4 million in the second quarter of 2017. Interest income and expense were impacted by the rising interest rate environment. Total other expense increased $2.8 million in the second quarter of 2018, compared to the second quarter of 2017, primarily due to higher compensation and benefits. The Bank's return on average equity for the second quarter of 2018 was 7.41% compared to 7.49% for the second quarter of 2017.

For the six months ended June 30, 2018, net income was $170.5 million compared to $174.8 million for the same prior-year period, a decrease of $4.3 million. The decrease was primarily due to a decrease in total other noninterest income, partially offset by higher net interest income. Noninterest income was $9.3 million in the first six months of 2018, compared to $19.7 million in the same period of 2017. This $10.4 million decrease was primarily driven by net losses on trading securities of $11.4 million in the first six months of 2018, compared to net gains of $7.6 million in the same period in 2017, partially offset by an increase in net gains on derivatives and hedging activities of $8.1 million. Net interest income was $226.7 million for the first six months of 2018, an increase of $8.0 million compared to $218.7 million in the same period in 2017 and reflected the rising interest rate environment during the first half of 2018. The Bank's return on average equity for the first six months of 2018 was 7.02% compared to 7.50% for the same prior year period.

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Net Interest Income

The following table summarizes the yields and rates paid on interest-earning assets and interest-bearing liabilities, respectively, the average balance for each of the primary balance sheet classifications, and the net interest margin for the three and six months ended June 30, 2018 and 2017.

Average Balances and Interest Yields/Rates Paid

	Three months ended June 30,
	2018					2017
(dollars in millions)	Average Balance		Interest Income/ Expense		Avg. Yield/ Rate (%)	Average Balance		Interest Income/ Expense		Avg. Yield/ Rate (%)
Assets:
Federal funds sold and securities purchased under agreements to resell (1)	$	6,326.9	$	27.7	1.76	$	6,875.4	$	16.3	0.95
Interest-bearing deposits (2)	586.2		2.5		1.71	316.6		0.6		0.73
Investment securities (3)	11,575.0		77.4		2.68	11,596.7		62.7		2.17
Advances (4)	73,280.1		409.0		2.24	72,956.2		237.1		1.30
Mortgage loans held for portfolio (5)	4,095.7		36.4		3.56	3,467.4		31.8		3.68
Total interest-earning assets	95,863.9		553.0		2.31	95,212.3		348.5		1.47
Other assets (6)	744.1					1,314.9
Total assets	$	96,608.0				$	96,527.2
Liabilities and capital:
Deposits (2)	$	499.5	$	1.9	1.58	$	552.3	$	1.1	0.82
Consolidated obligation discount notes	23,005.6		102.4		1.78	28,427.6		57.4		0.81
Consolidated obligation bonds (7)	67,471.6		331.5		1.97	62,273.1		179.6		1.16
Other borrowings	4.7		0.1		6.62	9.5		—		3.13
Total interest-bearing liabilities	90,981.4		435.9		1.92	91,262.5		238.1		1.05
Other liabilities	667.3					551.0
Total capital	4,959.3					4,713.7
Total liabilities and capital	$	96,608.0				$	96,527.2
Net interest spread					0.39					0.42
Impact of noninterest-bearing funds					0.10					0.05
Net interest income/net interest margin			$	117.1	0.49			$	110.4	0.47

Notes:

⁽¹⁾ The average balance of Federal funds sold and securities purchased under agreements to resell and the related interest income and average yield calculations may include loans to other FHLBanks.

⁽²⁾ Average balances of deposits (assets and liabilities) include cash collateral received from/paid to counterparties which is reflected in the Statements of Condition as derivative assets/liabilities.

⁽³⁾ Investment securities include trading, AFS and HTM securities. The average balances of AFS and HTM are reflected at amortized cost; therefore, the resulting yields do not give effect to changes in fair value or the noncredit component of recognized OTTI reflected in AOCI.

⁽⁴⁾ Average balances reflect noninterest-earning hedge accounting adjustments of $(253.3) million and $(17.6) million in 2018 and 2017, respectively.

⁽⁵⁾ Nonaccrual mortgage loans are included in average balances in determining the average rate.

⁽⁶⁾ The allowance for credit losses and the noncredit portion of OTTI losses on investment securities is reflected in other assets for purposes of the average balance sheet presentation.

⁽⁷⁾ Average balances reflect noninterest-bearing hedge accounting adjustments of $(229.9) million and $(89.0) million in 2018 and 2017, respectively.

Net interest income for the second quarter of 2018 increased $6.7 million from the same prior year period due to an increase in interest income, partially offset by higher interest expense. Interest-earning assets increased 0.7% primarily due to increased purchases of mortgage loans held for portfolio and higher demand for advances, partially offset by decreased purchases of Federal funds sold and securities purchased under agreements to resell. The rate earned on interest-earning assets increased 84 basis points primarily due to a higher yield on advances. Interest income increased across all categories. Interest

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income on advances increased due to an increase in yield. Interest income on Federal funds sold and securities purchased under agreements to resell increased due to an increase in yield. Interest income on mortgage loans held for portfolio increased due to increased volume, which more than offset the run-off of higher-yielding assets that have been replaced with lower-yielding assets. The rate paid on interest-bearing liabilities increased 87 basis points due to higher funding costs on consolidated obligation bonds and discount notes. The impact of noninterest-bearing funds increased 5 basis points due to higher interest rates.

	Six months ended June 30,
	2018					2017
(dollars in millions)	Average Balance		Interest Income/ Expense		Avg. Yield/ Rate (%)	Average Balance		Interest Income/ Expense		Avg. Yield/ Rate (%)
Assets:
Federal funds sold and securities purchased under agreements to resell (1)	$	7,389.5	$	58.2	1.59	$	6,253.8	$	25.9	0.83
Interest-bearing deposits (2)	507.6		3.7		1.46	232.7		0.8		0.65
Investment securities (3)	11,332.4		144.9		2.58	11,995.1		125.1		2.10
Advances (4)	72,119.4		730.2		2.04	73,472.3		443.4		1.22
Mortgage loans held for portfolio (5)	4,038.8		71.9		3.59	3,439.6		62.6		3.67
Total interest-earning assets	95,387.7		1,008.9		2.13	95,393.5		657.8		1.39
Other assets (6)	774.7					1,327.4
Total assets	$	96,162.4				$	96,720.9
Liabilities and capital:
Deposits (2)	$	504.4	$	3.6	1.45	$	550.6	$	1.9	0.70
Consolidated obligation discount notes	25,470.9		198.2		1.57	26,444.2		92.3		0.70
Consolidated obligation bonds (7)	64,676.9		580.2		1.81	64,475.9		344.8		1.08
Other borrowings	5.9		0.2		5.85	8.2		0.1		3.53
Total interest-bearing liabilities	90,658.1		782.2		1.74	91,478.9		439.1		0.97
Other liabilities	609.7					538.5
Total capital	4,894.6					4,703.5
Total liabilities and capital	$	96,162.4				$	96,720.9
Net interest spread					0.39					0.42
Impact of noninterest-bearing funds					0.09					0.04
Net interest income/net interest margin			$	226.7	0.48			$	218.7	0.46

Notes:

⁽¹⁾ The average balance of Federal funds sold and securities purchased under agreements to resell and the related interest income and average yield calculations may include loans to other FHLBanks.

⁽²⁾ Average balances of deposits (assets and liabilities) include cash collateral received from/paid to counterparties which is reflected in the Statements of Condition as derivative assets/liabilities.

⁽³⁾ Investment securities include trading, AFS and HTM securities. The average balances of AFS and HTM are reflected at amortized cost; therefore, the resulting yields do not give effect to changes in fair value or the noncredit component of a previously recognized OTTI reflected in AOCI.

⁽⁴⁾ Average balances reflect noninterest-earning hedge accounting adjustments of $(216.7) million and $(22.4) million in 2018 and 2017, respectively.

⁽⁵⁾ Nonaccrual mortgage loans are included in average balances in determining the average rate.

⁽⁶⁾ The allowance for credit losses and the noncredit portion of OTTI losses on investment securities is reflected in other assets for purposes of the average balance sheet presentation.

⁽⁷⁾ Average balances reflect noninterest-bearing hedge accounting adjustments of $(208.8) million and $(92.8) million in 2018 and 2017, respectively.

Net interest income for the first six months of 2018 increased $8.0 million from the same prior year period due to an increase in interest income, partially offset by higher interest expense. Interest-earning assets were relatively unchanged as increased purchases of Federal funds sold and securities purchased under agreements to resell and mortgage loans held for portfolio were offset by lower demand for advances and decreased purchases of investment securities. The rate earned on interest-bearing assets increased 74 basis points primarily due to a higher yield on advances. Interest income increased across all categories. The increase was primarily driven by increase in interest rates. The rate paid on interest-bearing liabilities

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increased 77 basis points due to higher funding costs on consolidated obligation bonds and discount notes. The impact of noninterest-bearing funds increased 5 basis points due to higher interest rates.

Rate/Volume Analysis. Changes in both volume and interest rates influence changes in net interest income and net interest margin. The following table summarizes changes in interest income and interest expense between the three and six months ended June 30, 2018 and 2017.

	Increase (Decrease) in Interest Income/Expense Due to Changes in Rate/Volume 2018 compared to 2017
	Three months ended June 30,								Six months ended June 30,
(in millions)	Volume			Rate			Total		Volume			Rate			Total
Federal funds sold	$	(1.4	)	$	12.8		$	11.4	$	5.4		$	26.9		$	32.3
Interest-bearing deposits	0.7			1.2			1.9		1.4			1.5			2.9
Investment securities	(0.1		)	14.8			14.7		(7.2		)	27.0			19.8
Advances	1.1			170.8			171.9		(8.3		)	295.1			286.8
Mortgage loans held for portfolio	5.6			(1.0		)	4.6		10.7			(1.4		)	9.3
Total interest-earning assets	$	5.9		$	198.6		$	204.5	$	2.0		$	349.1		$	351.1
Interest-bearing deposits	$	(0.1	)	$	0.9		$	0.8	$	(0.2	)	$	1.9		$	1.7
Consolidated obligation discount notes	(12.8		)	57.8			45.0		(3.5		)	109.4			105.9
Consolidated obligation bonds	16.1			135.8			151.9		1.1			234.3			235.4
Other borrowings	—			0.1			0.1		—			0.1			0.1
Total interest-bearing liabilities	$	3.2		$	194.6		$	197.8	$	(2.6	)	$	345.7		$	343.1
Total increase in net interest income	$	2.7		$	4.0		$	6.7	$	4.6		$	3.4		$	8.0

Interest income and interest expense increased in both the quarter-over-quarter and year-over-year comparisons. Higher rates drove the increases in both interest income and expense while volumes were steady. The rate increase was primarily due to an increase in market interest rates as the Federal funds target rate increased five times between January 2017 and June 2018.

Interest expense on the average consolidated obligations portfolio increased in both comparisons. Rates paid on both discount notes and bonds rose due to the rise in market interest rates. In both comparisons, a decrease in average discount note balances was partially offset by an increase in average bond balances. A portion of the bond portfolio is currently swapped to 3-month LIBOR; therefore, as the LIBOR rate (decreases) increases, interest expense on swapped bonds, including the impact of swaps, (decreases) increases. See details regarding the impact of swaps on the rates paid in the “Interest Income Derivatives Effects” discussion below.

The following table presents the average par balances of the Bank's advance portfolio for the three and six months ended June 30, 2018 and 2017. These balances do not reflect any hedge accounting adjustments.

(in millions)	Three months ended June 30,				Six months ended June 30,
Product	2018		2017		2018		2017
RepoPlus/Mid-Term Repo	$	24,095.1	$	21,036.9	$	23,030.3	$	20,901.6
Core (Term)	49,349.4		51,509.6		49,216.3		52,166.2
Convertible Select	89.1		429.5		89.8		429.5
Total par value	$	73,533.6	$	72,976.0	$	72,336.4	$	73,497.3

Variances in total advances shown above were driven primarily by changes in large member activity.

8

Interest Income Derivative Effects. The following tables quantify the effects of the Bank's derivative activities on interest income and interest expense for the three and six months ended June 30, 2018 and 2017. Derivative and hedging activities are discussed below.

Three Months Ended June 30, 2018 (dollars in millions)	Average Balance		Interest Inc./  Exp. with Derivatives		Avg. Yield/ Rate (%)	Interest Inc./ Exp. without Derivatives		Avg. Yield/ Rate (%)	Impact of Derivatives(1)			Incr./ (Decr.) (%)
Assets:
Advances	$	73,280.1	$	409.0	2.24	$	398.4	2.18	$	10.6		0.06
Mortgage loans held for  portfolio	4,095.7		36.4		3.56	37.3		3.65	(0.9		)	(0.09	)
All other interest-earning  assets	18,488.1		107.6		2.34	108.5		2.36	(0.9		)	(0.02	)
Total interest-earning  assets	$	95,863.9	$	553.0	2.31	$	544.2	2.28	$	8.8		0.03
Liabilities:
Consolidated obligation  bonds	$	67,471.6	$	331.5	1.97	$	307.8	1.83	$	23.7		0.14
All other interest-bearing  liabilities	23,509.8		104.4		1.78	104.4		1.78	—			—
Total interest-bearing  liabilities	$	90,981.4	$	435.9	1.92	$	412.2	1.82	$	23.7		0.10
Net interest income/net  interest spread			$	117.1	0.39	$	132.0	0.46	$	(14.9	)	(0.07	)

Three Months Ended June 30, 2017 (dollars in millions)	Average Balance		Interest Inc./  Exp. with Derivatives		Avg. Yield/ Rate (%)	Interest Inc./ Exp. without Derivatives		Avg. Yield/ Rate (%)	Impact of Derivatives(1)			Incr./ (Decr.) (%)
Assets:
Advances	$	72,956.2	$	237.1	1.30	$	245.4	1.35	$	(8.3	)	(0.05	)
Mortgage loans held for  portfolio	3,467.4		31.8		3.68	32.8		3.79	(1.0		)	(0.11	)
All other interest-earning  assets	18,788.7		79.6		1.70	83.9		1.79	(4.3		)	(0.09	)
Total interest-earning  assets	$	95,212.3	$	348.5	1.47	$	362.1	1.53	$	(13.6	)	(0.06	)
Liabilities:
Consolidated obligation  bonds	$	62,273.1	$	179.6	1.16	$	182.4	1.17	$	(2.8	)	(0.01	)
All other interest-bearing  liabilities	28,989.4		58.5		0.81	58.5		0.81	—			—
Total interest-bearing  liabilities	$	91,262.5	$	238.1	1.05	$	240.9	1.06	$	(2.8	)	(0.01	)
Net interest income/net  interest spread			$	110.4	0.42	$	121.2	0.47	$	(10.8	)	(0.05	)

9

Six Months Ended June 30, 2018 (dollars in millions)	Average Balance		Interest Inc./  Exp. with Derivatives		Avg. Yield/ Rate (%)	Interest Inc./ Exp. without Derivatives		Avg. Yield/ Rate (%)	Impact of Derivatives(1)			Incr./ (Decr.) (%)
Assets:
Advances	$	72,119.4	$	730.2	2.04	$	722.5	2.02	$	7.7		0.02
Mortgage loans held for  portfolio	4,038.8		71.9		3.59	73.5		3.67	(1.6		)	(0.08	)
All other interest-earning  assets	19,229.5		206.8		2.17	210.4		2.21	(3.6		)	(0.04	)
Total interest-earning  assets	$	95,387.7	$	1,008.9	2.13	$	1,006.4	2.13	$	2.5		—
Liabilities:
Consolidated obligation  bonds	$	64,676.9	$	580.2	1.81	$	548.9	1.71	$	31.3		0.10
All other interest-bearing  liabilities	25,981.2		202.0		1.57	202.0		1.57	—			—
Total interest-bearing  liabilities	$	90,658.1	$	782.2	1.74	$	750.9	1.67	$	31.3		0.07
Net interest income/net  interest spread			$	226.7	0.39	$	255.5	0.46	$	(28.8	)	(0.07	)

Six Months Ended June 30, 2017 (dollars in millions)	Average Balance		Interest Inc./  Exp. with Derivatives		Avg. Yield/ Rate (%)	Interest Inc./ Exp. without Derivatives		Avg. Yield/ Rate (%)	Impact of Derivatives(1)			Incr./ (Decr.) (%)
Assets:
Advances	$	73,472.3	$	443.4	1.22	$	461.9	1.27	$	(18.5	)	(0.05	)
Mortgage loans held for  portfolio	3,439.6		62.6		3.67	64.5		3.78	(1.9		)	(0.11	)
All other interest-earning  assets	18,481.6		151.8		1.66	161.0		1.76	(9.2		)	(0.10	)
Total interest-earning  assets	$	95,393.5	$	657.8	1.39	$	687.4	1.45	$	(29.6	)	(0.06	)
Liabilities:
Consolidated obligation  bonds	$	64,475.9	$	344.8	1.08	$	354.4	1.11	$	(9.6	)	(0.03	)
All other interest-bearing  liabilities	27,003.0		94.3		0.70	94.3		0.70	—			—
Total interest-bearing  liabilities	$	91,478.9	$	439.1	0.97	$	448.7	0.99	$	(9.6	)	(0.02	)
Net interest income/net  interest spread			$	218.7	0.42	$	238.7	0.46	$	(20.0	)	(0.04	)

Note:

⁽¹⁾ Impact of Derivatives includes net interest settlements, amortization of basis adjustments resulting from previously terminated hedging relationships and the amortization of the market value of mortgage purchase commitments classified as derivatives at the time the commitment settled.

The use of derivatives reduced net interest income and net interest spread for the three and six months ended June 30, 2018 and 2017. The variances in the advances and consolidated obligation derivative impacts from period to period are driven by the change in the average LIBOR-based variable rate, the timing of interest rate resets and the average hedged portfolio balances outstanding during any given period.

The Bank uses derivatives to hedge the fair market value changes attributable to the change in the LIBOR benchmark interest rate. The Bank generally uses interest rate swaps to hedge a portion of advances and consolidated obligations, which convert the interest rates on those instruments from a fixed rate to a LIBOR-based variable rate. The purpose of this strategy is

10

to protect the interest rate spread. Using derivatives to convert interest rates from fixed to variable can increase or decrease net interest income.

The Bank uses many different funding and hedging strategies. These strategies involve closely match-funding bullet advances with bullet debt. This is designed in part to avoid the use of derivatives where prudent and reduce the Bank's reliance on short-term funding.

Provision (Benefit) for Credit Losses. The provision (benefit) for credit losses on mortgage loans held for portfolio and Banking on Business (BOB) loans was $0.4 million for the second quarter of 2018 and was $(0.1) million for the same period in 2017. For the six months ended June 30, 2018 and 2017, the provision (benefit) for credit losses on mortgage loans held for portfolio and BOB loans was $2.8 million and $(0.1) million, respectively. The six month increase was primarily due to a non-recurring adjustment to the MPF Plus product.

Other Noninterest Income

	Three months ended June 30,						Six months ended June 30,
(in millions)	2018			2017			2018			2017
Net OTTI losses, credit portion	$	(0.1	)	$	—		$	(0.4	)	$	(0.7	)
Net gains (losses) on trading securities	(2.7		)	5.3			(11.4		)	7.6
Net gains (losses) on derivatives and hedging activities	4.1			(4.3		)	8.2			0.1
Standby letters of credit fees	5.7			6.0			11.5			12.1
Other, net	0.6			—			1.4			0.6
Total other noninterest income	$	7.6		$	7.0		$	9.3		$	19.7

The change in the Bank's total other noninterest income for the second quarter of 2018 compared to the same prior year period was due primarily to net gains on derivatives and hedging activities partially offset by net losses on trading securities. The change in the Bank's total other noninterest income for the first half of 2018 compared to the same prior year period was due primarily to net losses on trading securities partially offset by an increase in net gains on derivatives and hedging activities. The net losses on trading securities reflects the impact of fair market value changes in Agency and U.S. Treasury investments held in the Bank's trading portfolio. The activity related to derivatives and hedging is discussed in more detail below.

Derivatives and Hedging Activities. The Bank enters into interest rate swaps, caps, floors and swaption agreements, referred to collectively as interest rate exchange agreements and more broadly as derivatives transactions. The Bank enters into derivatives transactions to offset all or portions of the financial risk exposures inherent in its member lending, investment and funding activities. All derivatives are recorded on the balance sheet at fair value. Changes in derivatives' fair values are recorded in the Statements of Income.

The Bank's hedging strategies consist of fair value accounting hedges and economic hedges. Fair value hedges are discussed in more detail below. Economic hedges address specific risks inherent in the Bank's balance sheet, but either they do not qualify for hedge accounting or the Bank does not elect to apply hedge accounting. As a result, income recognition on the derivatives in economic hedges may vary considerably compared to the timing of income recognition on the underlying asset or liability. The Bank does not enter into derivatives for speculative purposes nor does it have any cash flow hedges.

Regardless of the hedge strategy employed, the Bank's predominant hedging instrument is an interest rate swap. At the time of inception, the fair market value of an interest rate swap generally equals or is close to zero. Notwithstanding the exchange of interest payments made during the life of the swap, which are recorded as either interest income/expense or as a gain (loss) on derivatives, depending upon the accounting classification of the hedging instrument, the fair value of an interest rate swap returns to zero at the end of its contractual term. Therefore, although the fair value of an interest rate swap is likely to change over the course of its full term, upon maturity any unrealized gains and losses generally net to zero.

11

The following tables detail the net effect of derivatives and hedging activities for the three and six months ended June 30, 2018 and 2017.

	Three months ended June 30, 2018
(in millions)	Advances		Investments			Mortgage Loans			Bonds			Discount Notes		Other			Total
Net interest income:
Amortization/accretion of hedging activities in net interest income (1)	$	—	$	—		$	(0.9	)	$	(0.2	)	$	—	$	—		$	(1.1	)
Net interest settlements included in net interest     income (2)	10.6		(0.9		)	—			(23.5		)	—		—			(13.8		)
Total effect on net interest income	$	10.6	$	(0.9	)	$	(0.9	)	$	(23.7	)	$	—	$	—		$	(14.9	)
Net gains (losses) on derivatives and hedging activities:
Gains (losses) on fair value hedges	$	0.2	$	0.8		$	—		$	(2.7	)	$	—	$	—		$	(1.7	)
Gains (losses) on derivatives not receiving hedge accounting, including net interest settlements	1.0		7.0			2.9			(8.0		)	3.7		—			6.6
Other (3)	—		—			—			—			—		(0.8		)	(0.8		)
Total net gains (losses) on derivatives and hedging activities	$	1.2	$	7.8		$	2.9		$	(10.7	)	$	3.7	$	(0.8	)	$	4.1
Total net effect of derivatives and hedging activities	$	11.8	$	6.9		$	2.0		$	(34.4	)	$	3.7	$	(0.8	)	$	(10.8	)

	Three months ended June 30, 2017
(in millions)	Advances			Investments			Mortgage Loans			Bonds		Discount Notes		Balance Sheet			Other		Total
Net interest income:
Amortization/accretion of hedging activities in net interest income (1)	$	(0.3	)	$	—		$	(1.0	)	$	0.3	$	—	$	—		$	—	$	(1.0	)
Net interest settlements included in net interest income(2)	(8.0		)	(4.3		)	—			2.5		—		—			—		(9.8		)
Total effect on net interest income	$	(8.3	)	$	(4.3	)	$	(1.0	)	$	2.8	$	—	$	—		$	—	$	(10.8	)
Net gains (losses) on derivatives and hedging activities:
Gains (losses) on fair value hedges	$	(0.1	)	$	(0.8	)	$	—		$	0.5	$	—	$	—		$	—	$	(0.4	)
Gains (losses) on derivatives not receiving hedge accounting, including net interest settlements	(1.9		)	(11.2		)	(4.4		)	13.5		—		(0.1		)	—		(4.1		)
Other (3)	—			—			—			—		—		—			0.2		0.2
Total net gains (losses) on derivatives and hedging activities	$	(2.0	)	$	(12.0	)	$	(4.4	)	$	14.0	$	—	$	(0.1	)	$	0.2	$	(4.3	)
Total net effect of derivatives and hedging activities	$	(10.3	)	$	(16.3	)	$	(5.4	)	$	16.8	$	—	$	(0.1	)	$	0.2	$	(15.1	)

12

	Six months ended June 30, 2018
(in millions)	Advances			Investments			Mortgage Loans			Bonds			Discount Notes			Other			Total
Net interest income:
Amortization/accretion of hedging activities in net interest income (1)	$	(0.1	)	$	(0.1	)	$	(1.6	)	$	—		$	—		$	—		$	(1.8	)
Net interest settlements included in net interest income(2)	7.8			(3.5		)	—			(31.3		)	—			—			(27.0		)
Total effect on net interest income	$	7.7		$	(3.6	)	$	(1.6	)	$	(31.3	)	$	—		$	—		$	(28.8	)
Net gains (losses) on derivatives and hedging activities:
Gains (losses) on fair value hedges	$	0.5		$	2.6		$	—		$	(3.6	)	$	—		$	—		$	(0.5	)
Gains (losses) on derivatives not receiving hedge accounting, including net interest settlements	5.2			26.2			12.5			(32.2		)	(1.8		)	—			9.9
Other (3)	—			—			—			—			—			(1.2		)	(1.2		)
Total net gains (losses) on derivatives and hedging activities	$	5.7		$	28.8		$	12.5		$	(35.8	)	$	(1.8	)	$	(1.2	)	$	8.2
Total net effect of derivatives and hedging activities	$	13.4		$	25.2		$	10.9		$	(67.1	)	$	(1.8	)	$	(1.2	)	$	(20.6	)

	Six months ended June 30, 2017
(in millions)	Advances			Investments			Mortgage Loans			Bonds		Discount Notes			Balance Sheet			Other		Total
Net interest income:
Amortization/accretion of hedging activities in net interest income (1)	$	(0.5	)	$	—		$	(1.9	)	$	0.8	$	—		$	—		$	—	$	(1.6	)
Net interest settlements included in net interest income(2)	(18.0		)	(9.2		)	—			8.8		—			—			—		(18.4		)
Total effect on net interest income	$	(18.5	)	$	(9.2	)	$	(1.9	)	$	9.6	$	—		$	—		$	—	$	(20.0	)
Net gains (losses) on derivatives and hedging activities:
Gains (losses) on fair value hedges	$	(0.1	)	$	(0.7	)	$	—		$	1.0	$	—		$	—		$	—	$	0.2
Gains (losses) on derivatives not receiving hedge accounting, including net interest settlements	(0.8		)	(11.3		)	(4.0		)	16.0		(0.2		)	(0.1		)	—		(0.4		)
Other (3)	—			—			—			—		—			—			0.3		0.3
Total net gains (losses) on derivatives and hedging activities	$	(0.9	)	$	(12.0	)	$	(4.0	)	$	17.0	$	(0.2	)	$	(0.1	)	$	0.3	$	0.1
Total net effect of derivatives and hedging activities	$	(19.4	)	$	(21.2	)	$	(5.9	)	$	26.6	$	(0.2	)	$	(0.1	)	$	0.3	$	(19.9	)

Notes:

⁽¹⁾ Represents the amortization/accretion of hedging fair value adjustments.

⁽²⁾ Represents interest income/expense on derivatives included in net interest income.

⁽³⁾ Represents the price alignment amount on derivatives for which variation margin is characterized as a daily settled contract.

Fair value hedges. The Bank uses interest rate swaps to hedge a large portion of its fixed-rate advances and consolidated obligations and a small portion of its fixed rate investment securities. The interest rate swaps convert these fixed-rate instruments to a variable-rate (i.e., LIBOR). Most of these hedge relationships are subject to fair value hedge accounting treatment. Fair value hedge ineffectiveness represents the difference between the change in the fair value of the derivative and the change in the fair value of the underlying asset/liability hedged. Fair value hedge ineffectiveness is generated by movement in the benchmark interest rate being hedged and by other structural characteristics of the transaction involved. For example, the presence of an upfront fee associated with a structured debt hedge will introduce valuation differences between the hedge and hedged item that will fluctuate over time. During the second quarter of 2018, the Bank recorded net losses of $(1.7) million compared to net losses of $(0.4) million for the second quarter of 2017. For the six months ended June 30, 2018 and 2017, the Bank recorded net losses of $(0.5) million and net gains of $0.2 million, respectively. The total notional amount increased to $35.9 billion at June 30, 2018, up from $30.0 billion at December 31, 2017.

13

Derivatives not receiving hedge accounting. For derivatives not receiving hedge accounting, also referred to as economic hedges, the Bank includes the net interest settlements and the fair value changes in the "Net gains (losses) on derivatives and hedging activities" financial statement line item. For economic hedges, the Bank recorded net gains of $6.6 million in second quarter of 2018 compared to net losses of $(4.1) million for the second quarter of 2017. For the six months ended June 30, 2018, the Bank recorded net gains of $9.9 million compared to net losses of $(0.4) million for the period ended June 30, 2017. The net gains for 2018 were driven by rising LIBOR rates and their impact on derivatives hedging the Bank's assets. The total notional amount of economic hedges, which includes mortgage delivery commitments, was $17.0 billion at June 30, 2018 and $14.8 billion at December 31, 2017. The increase in economic hedge notional from December 31, 2017 to June 30, 2018 was primarily due to new basis swaps executed in the first quarter of 2018 to hedge basis risk between 1-month and 3-month LIBOR.

Other Expense

The Bank's total other expenses increased $2.8 million to $22.5 million for the second quarter of 2018, compared to the same prior year period. For the first half of 2018 compared to the same prior year period, the Bank's total other expense decreased $0.5 million, to $43.7 million. The change in total other expenses was primarily driven by the Bank's voluntary contributions to its pension plan. The Bank made a $2.0 million contribution in the second quarter of 2018 and $3.0 million for the first half of 2018, compared to none during the second quarter of 2017 and $4.0 million in the first half of 2017.

Financial Condition

The following should be read in conjunction with the Bank's unaudited interim financial statements in this Form 10-Q and the audited financial statements in the Bank's 2017 Form 10-K.

Assets

Total assets were $101.8 billion at June 30, 2018, compared with $99.7 billion at December 31, 2017, a increase of $2.1 billion. The increase was primarily due to an increase in advances. Advances totaled $76.3 billion at June 30, 2018, a increase of $2.0 billion compared to $74.3 billion at December 31, 2017.

The Bank's core mission activities include the issuance of advances and acquiring member assets through the Mortgage Partnership Finance^® (MPF^®) program. The core mission asset ratio, defined as the ratio of par amount of advances and MPF loans relative to consolidated obligations using full year average balances, was 84.4% and 83.5% as of June 30, 2018 and December 31, 2017, respectively.

Advances. Advances (par) totaled $76.6 billion at June 30, 2018 compared to $74.4 billion at December 31, 2017. At June 30, 2018, the Bank had advances to 179 borrowing members, compared to 185 borrowing members at December 31, 2017. A significant amount of the advances continued to be generated from the Bank’s five largest borrowers, reflecting the asset concentration mix of the Bank’s membership base. Total advances outstanding to the Bank’s five largest borrowers decreased to 75.5% of total advances as of June 30, 2018, compared to 77.3% at December 31, 2017.

14

The following table provides information on advances at par by contractual maturity at June 30, 2018 and December 31, 2017.

	June 30,		December 31,
(in millions)	2018		2017
Fixed-rate
Due in 1 year or less (1)	$	20,089.8	$	19,776.3
Due after 1 year through 3 years	10,763.6		9,504.1
Due after 3 years through 5 years	6,453.9		4,074.4
Thereafter	648.3		661.9
Total par value	$	37,955.6	$	34,016.7
Fixed-rate, callable or prepayable(1)
Due in 1 year or less	$	3,000.0	$	—
Total par value	$	3,000.0	$	—
Variable-rate
Due in 1 year or less (1)	$	8,131.4	$	10,220.4
Due after 1 year through 3 years	19,234.3		18,788.3
Due after 3 years through 5 years	1,020.0		4,500.0
Thereafter	3.1		3.1
Total par value	$	28,388.8	$	33,511.8
Variable-rate, callable or prepayable(2)
Due in 1 year or less	$	1,700.0	$	1,400.0
Due after 1 year through 3 years	4,040.0		1,790.0
Due after 3 years through 5 years	1,010.0		3,010.0
Total par value	$	6,750.0	$	6,200.0
Other(3)
Due in 1 year or less	$	79.3	$	210.2
Due after 1 year through 3 years	173.8		160.5
Due after 3 years through 5 years	132.8		115.8
Thereafter	129.6		168.9
Total par value	$	515.5	$	655.4
Total par balance	$	76,609.9	$	74,383.9

Notes:

⁽¹⁾ Includes overnight advances.

⁽²⁾ Prepayable advances are those advances that may be contractually prepaid by the borrower on specified dates without incurring prepayment or termination fees.

⁽³⁾ Includes fixed-rate amortizing/mortgage matched, convertible, and other advances.

The Bank had no putable advances at June 30, 2018 or December 31, 2017.

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The following table provides a distribution of the number of members, categorized by individual member asset size, that had an outstanding advance balance during the six months ended June 30, 2018 and 2017. Commercial Bank, Savings Institution, and Credit Union members are classified by asset size as follows: Large (over $25 billion), Regional ($4 billion to $25 billion), Mid-size ($1.2 billion to $4 billion) and Community Financial Institutions (CFIs) (under $1.2 billion).

	June 30,		June 30,
Member Classification	2018		2017
Large	5		6
Regional	15		13
Mid-size	23		23
CFI (1)	165		160
Insurance	17		9
Total borrowing members during the period	225		211
Total membership	295		301
Percentage of members borrowing during the period	76.3	%	70.1	%

Notes:

⁽¹⁾ For purposes of this member classification reporting, the Bank groups smaller credit unions and community development financial institutions (CDFIs) with CFIs. CFIs are FDIC-insured depository institutions whose assets do not exceed the applicable regulatory limit.

The following table provides information at par on advances by member classification at June 30, 2018 and December 31, 2017.

(in millions)	June 30, 2018		December 31, 2017		Increase/(Decrease)
Member Classification
Large	$	56,730.0	$	57,480.0	(1.3	)%
Regional	9,483.6		7,691.5		23.3
Mid-size	4,477.9		4,157.6		7.7
CFI	4,095.5		3,528.2		16.1
Insurance	1,816.0		1,512.7		20.1
Non-member	6.9		13.9		(50.5	)
Total	$	76,609.9	$	74,383.9	3.0	%

As of June 30, 2018, total advances increased 3.0% compared with balances at December 31, 2017. It is not uncommon for the Bank to experience variances in the overall advance portfolio driven primarily by changes in member needs.

See the “Credit and Counterparty Risk - TCE and Collateral” discussion in the Risk Management section of this Item 2 for further information on collateral policies and practices and details regarding eligible collateral, including amounts and percentages of eligible collateral securing member advances as of June 30, 2018.

Mortgage Loans Held for Portfolio.Mortgage loans held for portfolio, net of allowance for credit losses, totaled $4.2 billion and $3.9 billion at June 30, 2018 and December 31, 2017 respectively.

The Bank places conventional mortgage loans that are 90 days or more delinquent on nonaccrual status. In addition, the Bank records cash payments received as a reduction of principaluntil the remaining principal amount due is expected to be collected and then as a recovery of any charge-off, if applicable, followed by the recording of interest income. However, government mortgage loans that are 90 days or more delinquent remain in accrual status due to government guarantees or insurance.The Bank has a loan modification program for participating financial institutions (PFIs) under the MPF program. The Bank considers loan modifications or Chapter 7 bankruptcies where the obligation is discharged under the MPF program to be troubled debt restructurings (TDRs), since some form of concession has been made by the Bank. Balances regarding the Bank’s loan products are summarized below.

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(in millions)	June 30, 2018		December 31, 2017
Advances (1)	$	76,340.0	$	74,279.8
Mortgage loans held for portfolio, net (2)	4,171.5		3,923.1
Nonaccrual mortgage loans (3)	16.9		22.8
Mortgage loans 90 days or more delinquent and still accruing interest (4)	3.4		4.8
BOB loans, net	16.2		14.1

Notes:

⁽¹⁾ There are no advances which are past due or on nonaccrual status.

⁽²⁾ All mortgage loans are fixed-rate. Balances are reflected net of the allowance for credit losses.

⁽³⁾ Nonaccrual mortgage loans are reported net of interest applied to principal and do not include performing TDRs.

⁽⁴⁾ Only government-insured or -guaranteed loans continue to accrue interest after becoming 90 days or more delinquent.

The performance of the mortgage loans in the Bank’s MPF Program has been relatively stable, and the MPFOriginal portfolio continues to outperform the market based on national delinquency statistics. As of June 30, 2018, the Bank’s seriously delinquent mortgage loans (90 days or more delinquent or in the process of foreclosure) represented 0.4% of the MPF Original portfolio and 2.3% of the MPF Plus portfolio compared with 0.6% and 2.6%, respectively, at December 31, 2017. The MPF 35 portfolio delinquency remains minimal at 0.01%, for both June 30, 2018 and December 31, 2017, as it is still relatively new.

Allowance for Credit Losses (ACL). The Bank has not incurred any losses on advances since its inception in 1932. Due to the collateral held as security and the repayment history for advances, management believes that an ACL for advances is not appropriate under GAAP. This assessment also includes letters of credit, which have the same collateral requirements as advances. For additional information, see discussion regarding collateral policies and standards on the advances portfolio in the Advance Products discussion in Item 1. Business in the Bank's 2017 Form 10-K.

The ACL on mortgage loans is based on the losses inherent in the Bank's mortgage loan portfolio after taking into consideration the credit enhancement (CE) structure of the MPF Program. The losses inherent in the portfolio are based on either an individual or collective assessment of the mortgage loans. The Bank purchases government-guaranteed and/or -insured and conventional fixed-rate residential mortgage loans. Because the credit risk on the government-guaranteed/insured loans is predominantly assumed by other entities, only conventional mortgage loans are evaluated for an ACL.

The Bank’s conventional mortgage loan portfolio is comprised of large groups of smaller-balance homogeneous loans made to borrowers of PFIs that are secured by residential real estate. A mortgage loan is considered impaired when it is probable that all contractual principal and interest payments will not be collected as scheduled based on current information and events. The Bank evaluates certain conventional mortgage loans for impairment individually and the related credit loss is charged-off against the reserve. However, if the estimated loss can be recovered through CE, a receivable is established, resulting in a net charge-off. The CE receivable is evaluated for collectibility, and a reserve, included as part of the allowance for credit losses, is established, if required.

The remainder of the portfolio's incurred loss is estimated using a collective assessment, which is based on probability of default and loss given default. Probability of default and loss given default are based on the prior 12-month historical performance of the Bank's mortgage loans. Probability of default is based on a migration analysis, and loss given default is based on realized losses incurred on the sale of mortgage loan collateral, including a factor that reduces estimated proceeds from primary mortgage insurance (PMI) given the credit deterioration experienced by those companies.

Mortgage loans are assessed by a third party's credit model at acquisition and a CE is calculated based on loan attributes and the Bank’s risk tolerance on its entire MPF portfolio. Credit losses on a mortgage loan may only be absorbed by the CE amount in the master commitment related to the loan. In addition, the CE structure of the MPF Program is designed such that initial losses on mortgage loans are incurred by the Bank up to an agreed upon amount, referred to as the first loss account (FLA). Additional eligible credit losses are covered by CEs provided by PFIs (available CE) until exhausted. Certain losses incurred by the Bank on MPF 35 and MPF Plus can be recaptured by withholding fees paid to the PFI for its retention of credit risk. All additional losses are incurred by the Bank.

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The following table presents the impact of the CE structure on the ACL and the balance of the FLA and available CE at June 30, 2018 and December 31, 2017.

	MPF CE structure June 30, 2018				ACL June 30, 2018
(in millions)	FLA		Available CE		Estimate of Credit Loss		Charge - offs			Reduction to the ACL due to CE			ACL
MPF Original	$	5.3	$	76.4	$	5.8	$	(1.3	)	$	(3.9	)	$	0.6
MPF 35	5.4		52.3		0.3		—			(0.3		)	—
MPF Plus	16.7		8.9		9.1		—			(1.7		)	7.4
Total	$	27.4	$	137.6	$	15.2	$	(1.3	)	$	(5.9	)	$	8.0

	MPF CE structure December 31, 2017				ACL December 31, 2017
(in millions)	FLA		Available CE		Estimate of Credit Loss		Charge - offs			Reduction to the ACL due to CE			ACL
MPF Original	$	4.9	$	78.7	$	6.0	$	(1.1	)	$	(4.4	)	$	0.5
MPF 35	4.2		38.0		0.2		—			(0.2		)	—
MPF Plus	16.9		10.0		9.5		—			(4.0		)	5.5
Total	$	26.0	$	126.7	$	15.7	$	(1.1	)	$	(8.6	)	$	6.0

The ACL on mortgage loans increased $2.0 million during the first six months of 2018. The increase is primarily due to a non-recurring adjustment to the MPF Plus product. The ACL associated with MPF Original remained consistent, and the ACL associated with the MPF 35 program remained zero due to the nature of its credit structure and performance.

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Investments. At June 30, 2018, the sum of the Bank's interest-bearing deposits, Federal funds sold and securities purchased under agreements to resell was $8.1 billion, an increase of approximately $1.7 billion from December 31, 2017. The Bank's strategy is to maintain its short-term liquidity position in part to be able to meet members' loan demand and regulatory liquidity requirements. Investment securities, including trading, AFS, and HTM securities, totaled $12.7 billion at June 30, 2018, compared to $11.3 billion at December 31, 2017. Details of the investment securities portfolio follow.

	Carrying Value
(in millions)	June 30, 2018			December 31, 2017
Trading securities:
Non-MBS:
U.S. Treasury obligations	$	98.0		$	—
Mutual funds (1)	—			9.7
Government-sponsored enterprises (GSE) and Tennessee Valley Authority (TVA) obligations	437.1			389.6
Total trading securities	$	535.1		$	399.3
Yield on trading securities	2.74		%	2.89		%
AFS securities:
Mutual funds (1)	$	—		$	2.0
GSE and TVA obligations	2,427.1			2,820.8
State or local agency obligations	261.0			269.4
MBS:
U.S. obligations single family MBS	165.7			179.3
GSE single-family MBS	2,521.1			2,665.8
GSE multifamily MBS	2,468.4			2,582.6
Private label residential MBS	475.7			524.5
Total AFS securities	$	8,319.0		$	9,044.4
Yield on AFS securities	2.66		%	2.28		%
HTM securities:
Certificates of deposit	$	1,700.0		$	175.0
State or local agency obligations	117.4			122.4
MBS:
U.S. obligations single family MBS	370.4			424.4
GSE single-family MBS	681.4			156.6
GSE multifamily MBS	694.5			726.0
Private label residential MBS	238.7			278.7
Total HTM securities	$	3,802.4		$	1,883.1
Yield on HTM securities	2.77		%	2.71		%
Total investment securities	$	12,656.5		$	11,326.8
Yield on investment securities	2.69		%	2.37		%

Note:

⁽¹⁾ Reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01, effective January 1, 2018. Refer to Note 1 in this Form 10-Q.

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As of June 30, 2018, the Bank held securities from the following issuers with a book value greater than 10% of Bank total capital.

(in millions)	Total Book Value		Total Fair Value
Freddie Mac	$	3,828.5	$	3,824.6
Fannie Mae	3,469.2		3,470.1
Federal Farm Credit Banks	1,827.9		1,827.9
Total	$	9,125.6	$	9,122.6

For additional information on the credit risk of the investment portfolio, see the Credit and Counterparty Risk - Investments discussion in the Risk Management section of this Item 2.

Liabilities and Capital

Deposits. The Bank offers demand, overnight and term deposits for members and qualifying nonmembers. Total deposits at June 30, 2018 increased to $551.1 million from $538.1 million at December 31, 2017.

Consolidated Obligations. Consolidated obligations consist of bonds and discount notes. The Bank's consolidated obligations totaled $95.7 billion at June 30, 2018, an increase of $2.0 billion from December 31, 2017. The increase in total consolidated obligations was mainly due to the advance balance increase in 2018.

At June 30, 2018, the Bank’s bonds outstanding increased to $68.7 billion compared to $57.5 billion at December 31, 2017. Conversely, discount notes outstanding at June 30, 2018 decreased to $27.0 billion from $36.2 billion at December 31, 2017. The shorter-term discount notes were issued near year-end 2017 to make additional liquidity available to members, if needed, and caused the shift in bonds compared to discount notes outstanding for the first half of 2018.

The Bank primarily uses noncallable bonds as a source of funding but also utilizes structured notes such as callable bonds. Unswapped callable bonds primarily fund the Bank’s mortgage portfolio while swapped callable bonds fund other floating rate assets. For additional information on the Bank's consolidated obligations, refer to Note 14 to the audited financial statements in Item 8. Financial Statements and Supplementary Financial Data of the Bank's 2017 Form 10-K.

Commitments and Off-Balance Sheet Items. As of June 30, 2018, the Bank was obligated to fund approximately $15.7 million in additional advances and BOB loans, $35.8 million of mortgage loans and $18.6 billion in outstanding standby letters of credit, and to issue $1.9 billion in consolidated obligations. The Bank does not consolidate any off-balance sheet special purpose entities or other off-balance sheet conduits.

Capital and Retained Earnings. The Finance Agency has issued regulatory guidance to the FHLBanks relating to capital management and retained earnings. The guidance directs each FHLBank to assess, at least annually, the adequacy of its retained earnings with consideration given to future possible financial and economic scenarios. The guidance also outlines the considerations that each FHLBank should undertake in assessing the adequacy of its retained earnings.

Management monitors capital adequacy, including the level of retained earnings, through the evaluation of market value of equity to par value of capital stock (MV/CS) as well as other risk metrics. Details regarding these metrics are discussed in the Risk Management portion of this Item 2.

Management has developed and adopted a framework for evaluating retained earnings adequacy, consistent with regulatory guidance and requirements. Retained earnings are intended to cover unexpected losses and protect members' par value of capital stock. The framework includes four risk elements that comprise the Bank's total retained earnings target: (1) market risk; (2) credit risk; (3) operational risk; and (4) accounting risk. The retained earnings target generated from this framework is sensitive to changes in the Bank's risk profile, whether favorable or unfavorable. The framework assists management in its overall analysis of the level of future dividends. The framework generated a retained earnings target of $564 million as of June 30, 2018. The Bank's retained earnings were $1,215.7 million at June 30, 2018.

Retained earnings increased $57.8 million to $1,215.7 million at June 30, 2018, compared to $1,157.9 million at December 31, 2017. The increase in retained earnings during the first six months of 2018 reflected net income that was

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partially offset by $112.7 million of dividends paid. Total retained earnings at June 30, 2018 included unrestricted retained earnings of $899.1 million and restricted retained earnings (RRE) of $316.6 million.

Capital Resources

The following should be read in conjunction with the unaudited interim financial statements included in this Form 10-Q, the audited financial statements in Item 8. Financial Statements and Supplementary Financial Data and the Capital Resources section of Item 1. Business in the Bank's 2017 Form 10-K.

Risk-Based Capital (RBC)

The Finance Agency’s RBC regulatory framework requires the Bank to maintain sufficient permanent capital, defined as retained earnings plus capital stock, to meet its combined credit risk, market risk and operations risk. Each of these components is computed as specified in regulations and directives issued by the Finance Agency.

(in millions)	June 30, 2018		December 31, 2017
Permanent capital:
Capital stock (1)	$	3,955.0	$	3,663.8
Retained earnings	1,215.7		1,157.9
Total permanent capital	$	5,170.7	$	4,821.7
RBC requirement:
Credit risk capital	$	384.4	$	390.4
Market risk capital	654.4		418.9
Operations risk capital	311.6		242.8
Total RBC requirement	$	1,350.4	$	1,052.1
Excess permanent capital over RBC requirement	$	3,820.3	$	3,769.6

Note:

⁽¹⁾ Capital stock includes mandatorily redeemable capital stock.

The increase in the total RBC requirement as of June 30, 2018 is mainly related to the change in the market risk capital component. The change was driven by an increase in floating rate debt outstanding and an increase in the severity of the scenarios modeled as a result of higher short-term interest rates. The Finance Agency has issued an Advisory Bulletin effective for RBC reporting beginning with the fourth quarter of 2018, which revises the market risk scenario methodology and significantly lessens the influence of the current level of rates on the scenarios under the current requirements. The Bank expects this to continue under future regulatory requirements. The Bank continues to maintain significant excess permanent capital over the RBC requirement.

On June 7, 2018, the Bank received final notification from the Finance Agency that it was considered "adequately capitalized" for the quarter ended March 31, 2018. As of the date of this filing, the Bank has not received final notice from the Finance Agency regarding its capital classification for the quarter ended June 30, 2018.

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Regulatory Capital and Leverage Ratios

In addition to the RBC requirements, the Finance Agency has mandated maintenance of total regulatory capital and leverage ratios of at least 4.0% and 5.0% of total assets, respectively. Management has an ongoing program to measure and monitor compliance with the ratio requirements. The Bank exceeded all regulatory capital requirements at June 30, 2018.

(dollars in millions)	June 30, 2018			December 31, 2017
Regulatory Capital Ratio
Minimum capital (4.0% of total assets)	$	4,072.6		$	3,986.5
Regulatory capital	5,170.7			4,821.7
Total assets	101,814.3			99,663.0
Regulatory capital ratio (regulatory capital as a percentage of total assets)	5.1		%	4.8		%
Leverage Ratio
Minimum leverage capital (5.0% of total assets)	$	5,090.7		$	4,983.2
Leverage capital (permanent capital multiplied by a 1.5 weighting factor)	7,756.0			7,232.5
Leverage ratio (leverage capital as a percentage of total assets)	7.6		%	7.3		%

The Bank's capital stock is owned by its members. The concentration of the Bank's capital stock by institution type is presented below.

(dollars in millions)	June 30, 2018			December 31, 2017
Commercial banks	152	$	3,527.7	155	$	3,259.3
Savings institutions	58	205.6		60	207.1
Insurance companies	28	144.5		28	130.0
Credit unions	55	72.2		53	62.0
Community Development Financial Institution (CDFI)	2	0.5		2	0.3
Total member institutions / total GAAP capital stock	295	$	3,950.5	298	$	3,658.7
Mandatorily redeemable capital stock		4.5			5.1
Total capital stock		$	3,955.0		$	3,663.8

The Bank lost five members in the first six months of 2018 and added two new members. One member merged with another institution outside of the Bank's district, and four members merged with another institution within the Bank's district.

Critical Accounting Policies and Estimates

The Bank's financial statements are prepared by applying certain accounting policies. Note 1 - Summary of Significant Accounting Policies in Item 8. Financial Statements and Supplementary Financial Data in the Bank's 2017 Form 10-K describes the most significant accounting policies used by the Bank. In addition, the Bank's critical accounting policies and estimates are presented in Item 7. Management's Discussion and Analysis in the Bank's 2017 Form 10-K. Certain of these policies require management to make estimates or economic assumptions that may prove inaccurate or be subject to variations that may significantly affect the Bank's reported results and financial position for the period or in future periods. Management views these policies as critical accounting policies.

The Bank made no changes to its critical accounting policies during the six months ended June 30, 2018.

In addition to evaluating the Bank's private label MBS portfolio under a base case (or best estimate) scenario, a cash flow analysis was also performed for each of the Bank's private label MBS under a more stressed housing price scenario. This additional scenario was used to determine the amount of credit losses, if any, that would have been recorded in earnings during the quarter ended June 30, 2018, if the more stressed housing price scenario had been used in the Bank's OTTI assessment as of June 30, 2018. The more stressed scenario results were immaterial. A more detailed discussion of this analysis is in the OTTI section of Credit and Counterparty Risk - Investments of this Item 2.

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See Note 1 - Changes in Accounting Principle and Recently Issued Accounting Standards and Interpretations to the unaudited financial statements in this Form 10-Q for information on new accounting pronouncements impacting the financial statements or becoming effective for the Bank in future periods.

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 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 subsidiaries may not have aggregate net credit exposure to an FHLBank and (in certain cases) economically interdependent entities in excess of 25% 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; all other covered companies will have until July 1, 2020 to comply. The Bank is continuing to study the overall impact of the rule, but does not believe it will materially affect its financial condition or results of operations.

Risk Management

The Bank employs a corporate governance and internal control framework designed to support the effective management of the Bank’s business activities and the related inherent risks. As part of this framework, the Board has approved a Risk Governance Policy and a Member Products Policy, both of which are reviewed regularly and re-approved at least annually. The Risk Governance Policy establishes risk guidelines, limits (if applicable), and standards for credit risk, market risk, liquidity risk, operational risk, and business risk in accordance with Finance Agency regulations and consistent with the Bank’s risk appetite. The Member Products Policy establishes the eligibility and authorization requirements, policy limits and restrictions, and the terms applicable to each type of Bank product or service, as well as collateral requirements. The risk appetite is established by the Board, as are other applicable guidelines in connection with the Bank’s Capital Plan and overall risk management.

Risk Governance

The Bank’s lending, investment and funding activities and use of derivative instruments expose the Bank to a number of risks that include, among others:

•market and interest rate risk;

•credit and counterparty risk;

•liquidity and funding risk; and

•operational and business risk.

In addition, the Bank’s risks are affected by current and projected financial and residential mortgage market trends, including those described in Item 1A. Risk Factors in the Bank's 2017 Form 10-K. Details regarding the Bank's risk governance framework and processes are included in the "Risk Governance" discussion in Risk Management in Item 7. Management's Discussion and Analysis in the Bank's 2017 Form 10-K.

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Capital Adequacy Measures. MV/CS provides a current assessment of the liquidation value of the balance sheet and measures the Bank's current ability to honor the par put redemption feature of its capital stock. This is one of the risk metrics used to evaluate the adequacy of retained earnings, which is used to develop dividend payment recommendations and support the repurchase of excess capital stock.

The current Board-approved floor for MV/CS is 90.0%. MV/CS is measured against the floor monthly. When MV/CS is below the established floor, excess capital stock repurchases and dividend payouts are restricted. See the “Capital and Retained Earnings” discussion in Financial Condition in this Item 2 for details regarding the Bank’s retained earnings policy. The MV/CS ratio was 136.1% at June 30, 2018 and 136.3% at December 31, 2017.

Qualitative and Quantitative Disclosures Regarding Market Risk

Managing Market Risk. The Bank's market risk management objective is to protect member/shareholder and bondholder value consistent with the Bank's housing mission and safe and sound operations across a wide range of interest rate environments. Management believes that a disciplined approach to market risk management is essential to maintaining a strong capital base and uninterrupted access to the capital markets.

The Bank's Market Risk Model. Significant resources are devoted to ensuring that the level of market risk in the balance sheet is accurately measured, thus allowing management to monitor the risk against policy and regulatory limits. The Bank uses externally developed models to evaluate its financial position and market risk. One of the most critical market-based models relates to the prepayment of principal on mortgage-related instruments. Management regularly reviews the major assumptions and methodologies used in its models, as well as the performance of the models relative to empirical results, so that appropriate changes to the models can be made.

The Bank regularly validates the models used to measure market risk. Such model validations are performed by third-party specialists or the Bank's model risk management department, which are separate from the model owner. The model validations are supplemented by additional validation processes performed by the Bank, most notably benchmarking model-derived fair values to those provided by third-party services or alternative internal valuation models. This analysis is performed by a group that is separate from the model owner. Results of the validation process, as well as any changes in valuation methodologies and the benchmarking analysis, are reported to the Bank's Asset and Liability Committee (ALCO), which is responsible for reviewing and approving the approaches used in the valuation of such risks to ensure that they are well controlled and effective and result in reasonable fair values.

Duration of Equity. One key risk metric used by the Bank is duration. Duration is a measure of the sensitivity of a financial instrument's value, or the value of a portfolio of instruments, to a 100 basis point parallel shift in interest rates. Duration (typically expressed in years) is commonly used by investors throughout the fixed income securities market as a measure of financial instrument price sensitivity.

The Bank's asset/liability management policy approved by the Board calls for actual duration of equity to be maintained within a + 4.5 year range in the base case. In addition, the duration of equity exposure limit in an instantaneous parallel interest rate shock of + 200 basis points is + 7 years. Management analyzes the duration of equity exposure against this policy limit on a daily basis and regularly evaluates its market risk management strategies.

The following table presents the Bank's duration of equity exposure at June 30, 2018 and December 31, 2017. Given the low level of interest rates, an instantaneous parallel interest rate shock of "down 200 basis points" could not be meaningfully measured for these periods and therefore is not presented. The "down 100 basis point" scenario results became meaningful during the first quarter of 2018 due to an increase in short term interest rates and therefore is only presented for June 30, 2018.

(in years)	Down 100 basis points	Base Case	Up 100  basis points	Up 200  basis points
Actual Duration of Equity:
June 30, 2018	(0.4)	0.0	0.3	0.6
December 31, 2017	n/a	0.0	0.2	0.6

Duration of equity changes in the first six months of 2018 were minimal. The Bank continues to monitor the mortgage and related fixed-income markets, including the impact that changes in the market or anticipated modeling changes may have on duration of equity and other market risk measures and may take actions to reduce market risk exposures as needed. Management believes that the Bank's current market risk profile is reasonable given these market conditions.

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Return on Equity (ROE) Spread Volatility. Interest rate risk is also measured based on the volatility in the Bank’s projected return on capital in excess of the return of an established benchmark market index. ROE spread is defined as the Bank's return on average equity, including capital stock and retained earnings, in excess of the average of 3-month LIBOR. ROE spread volatility is a measure of the variability of the Bank’s projected ROE spread in response to shifts in interest rates and represents the change in ROE spread compared to an ROE spread that is generated by the Bank in its base forecasting scenario. ROE spread volatility is measured over a rolling forward 12 month period for selected interest rate scenarios and excludes the income sensitivity resulting from mark-to-market changes, which are separately described below.

The ROE spread volatility presented in the table below reflects spreads relative to 3-month LIBOR. Management uses both parallel and non-parallel rate scenarios to assess interest rate risk. The steeper and flatter yield curve shift scenarios are represented by appropriate increases and decreases in short-term and long-term interest rates using the three-year point on the yield curve as the pivot point. Given the low rate environment, management replaced a "down 200 basis points parallel rate" scenario with a "down 100 basis point longer term rate" shock as an additional non-parallel rate scenario that reflects a decline in longer-term rates. Due to increases in short-term interest rates, the Bank had re-introduced a "down 50 basis point parallel rate" scenario during the first quarter of 2017. As a result of further increases in short term interest rates, the Bank replaced this "down 50 basis point parallel rate" scenario with a "down 100 basis point parallel rate" scenario during the first quarter of 2018.

ROE Spread Volatility Increase/(Decline)
(in basis points)	Down 100 bps Longer Term Rate Shock	Down 100 bps Parallel Shock	100 bps Steeper	100 bps Flatter	Up 200 bps Parallel Shock
June 30, 2018	(5)	(24)	(24)	7	(3)
December 31, 2017	(13)	n/a	(8)	2	(10)

Changes in ROE spread volatility in the first six months of 2018 were minimal. For each scenario, the Board's limit on the decline in ROE spread is set at no greater than 100 basis points. The Bank was in compliance with the ROE spread volatility limit across all selected interest rate shock scenarios at June 30, 2018 and December 31, 2017.

Mark-to-Market Risk. The Bank measures earnings risk associated with certain mark-to-market positions, including economic hedges. This framework measures forward-looking, scenario-based exposure based on interest rate and volatility shocks that are applied to any existing transaction that is marked to market through the income statement without an offsetting mark arising from a qualifying hedge relationship. In addition, the Bank's Capital Markets and Corporate Risk Management departments monitor the actual profit/loss change on a daily, monthly cumulative, and quarterly cumulative basis. The Bank's ALCO monitors mark-to-market risk through a daily exposure guideline and quarterly profit/loss reporting trigger.

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Credit and Counterparty Risk - Total Credit Exposure (TCE) and Collateral

TCE.The Bank manages the credit risk of each member on the basis of the member’s total credit exposure (TCE) to the Bank, which includes advances and related accrued interest, fees, basis adjustments and estimated prepayment fees; letters of credit; forward-dated advance commitments; and MPF credit enhancement and related obligations. This credit risk is managed by monitoring the financial condition of borrowers and by requiring all borrowers (and, where applicable in connection with member affiliate pledge arrangements approved by the Bank, their affiliates) to pledge sufficient eligible collateral for all borrower obligations to the Bank to ensure that all potential forms of credit-related exposures are covered by sufficient eligible collateral. At June 30, 2018, aggregate TCE was $96.7 billion, comprised of approximately $76.6 billion in advance principal outstanding, $19.7 billion in letters of credit (including forward commitments), $13.5 million in advance commitments, and $339.3 million in accrued interest, prepayment fees, MPF credit enhancement obligations and other fees.

The Bank establishes a maximum borrowing capacity (MBC) for each member based on collateral weightings applied to eligible collateral as described in the Bank’s Member Products Policy. Details regarding this policy are available in the Advance Products discussion in Item 1. Business in the Bank's 2017 Form 10-K. According to the Policy, eligible collateral is weighted to help ensure that the collateral value will exceed the amount that may be owed to the Bank in the event of a default. The Bank also has the ability to call for additional or substitute collateral while any indebtedness is outstanding to protect the Bank’s fully secured position. At June 30, 2018 and December 31, 2017, on a borrower-by-borrower basis, the Bank had a perfected security interest in eligible collateral with an estimated collateral value (after collateral weightings) in excess of the book value of all members’ and nonmember housing associates’ obligations to the Bank.

The financial condition of all members and eligible non-member housing associates is closely monitored for compliance with financial criteria as set forth in the Bank’s credit policies. The Bank has developed an internal credit rating (ICR) system that calculates financial scores and rates member institutions on a quarterly basis using a numerical rating scale from one to ten, with one being the best rating. Generally, scores are objectively calculated based on financial ratios computed from publicly available data. The scoring system gives the highest weighting to the member’s asset quality and capitalization. Other key factors include earnings and balance sheet composition. Operating results which include net income, capital levels, reserve coverage and other factors for the previous four quarters are used. The most recent quarter’s results are given a higher weighting. Additionally, a member’s credit score can be adjusted for various qualitative factors, such as the financial condition of the member’s holding company. A rating in one of the higher number (i.e., worse) categories indicates that a member exhibits well defined financial weaknesses as described in the policy. Members in these categories are reviewed for potential collateral delivery status. Other uses of the ICR include the scheduling of on-site collateral reviews. Insurance company members are rated on the same credit scale as depository institutions, but the analysis includes both quantitative and qualitative factors. While depository institution member analysis is based on standardized regulatory Call Report data and risk modeling, insurance company credit risk analysis is based on various forms of financial data, including, but not limited to, statutory reporting filed by insurance companies with state insurance regulators, which requires specialized methodologies and dedicated underwriting resources.

Management believes that it has adequate policies and procedures in place to effectively manage credit risk exposure related to member TCE. These credit and collateral policies balance the Bank’s dual goals of meeting members’ needs as a reliable source of liquidity and limiting credit loss by adjusting the credit and collateral terms in response to deterioration in creditworthiness. The Bank has never experienced a loss on its member advance exposure.

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The following table presents the Bank’s top five members with respect to their TCE at June 30, 2018.

	June 30, 2018
(dollars in millions)	TCE		% of Total
PNC Bank, National Association, DE (1)	$	24,998.8	25.9	%
Ally Bank, UT (2)	18,170.1		18.8
Chase Bank USA, N.A., DE	12,217.3		12.6
TD Bank, National Association, DE	9,947.7		10.3
Customers Bank, PA	3,985.2		4.1
	69,319.1		71.7
Other financial institutions	27,372.4		28.3
Total TCE outstanding	$	96,691.5	100.0	%

Notes:

⁽¹⁾ For Bank membership purposes, principal place of business is Pittsburgh, PA.

⁽²⁾ For Bank membership purposes, principal place of business is Horsham, PA.

Member Advance Concentration Risk. The following table lists the Bank’s top five borrowers based on advance balances at par as of June 30, 2018.

	June 30, 2018
(dollars in millions)	Advance Balance		% of Total
PNC Bank, National Association, DE (1)	$	22,035.0	28.8	%
Ally Bank, UT (2)	18,125.0		23.7
Chase Bank USA, N.A., DE	12,200.0		15.9
First National Bank of Pennsylvania, PA	3,070.0		4.0
Customers Bank, PA	2,389.8		3.1
	57,819.8		75.5
Other borrowers	18,790.1		24.5
Total advances	$	76,609.9	100.0	%

Notes:

⁽¹⁾ For Bank membership purposes, principal place of business is Pittsburgh, PA.

⁽²⁾ For Bank membership purposes, principal place of business is Horsham, PA.

The average year-to-date June 30, 2018 balances for the five largest borrowers totaled $55.3 billion, or 76.4% of total average advances outstanding. The advances made by the Bank to each of these borrowers are secured by collateral with an estimated value, after collateral weightings, in excess of the book value of the advances. The Bank has never incurred any losses on these advances. The Bank has implemented specific credit and collateral review monitoring for these members.

Letters of Credit. The following table presents the Bank’s total outstanding letters of credit as of June 30, 2018 and December 31, 2017. The letter of credit product is collateralized under the same policies, procedures and guidelines that apply to advances.

(dollars in millions)	June 30, 2018		December 31, 2017
Letters of credit:
Public unit deposit	$	18,638.5	$	18,948.8
Other	0.7		17.1
Total (1)	$	18,639.2	$	18,965.9

Notes:

⁽¹⁾ For June 30, 2018 and December 31, 2017 respectively, excludes approved requests to issue future standby letters of credit of $165.9 million and $44.1 million; also excludes available master standby letters of credit of $923.8 million and $676.3 million at June 30, 2018 and December 31, 2017, respectively.

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At June 30, 2018, the Bank had a concentration of letters of credit with two members (TD Bank and PNC Bank) totaling $12.0 billion or 64.1% of the total amount. At December 31, 2017, $12.2 billion or 64.2% of the letters of credit were concentrated with these same two members.

Collateral Policies and Practices. All members are required to maintain eligible collateral to secure their TCE. Refer to the Risk Management section of the Bank's 2017 Form 10-K for additional information related to the Bank’s Collateral Policy.

Collateral Agreements and Valuation. The Bank provides members with two types of collateral agreements: a blanket lien collateral pledge agreement and a specific collateral pledge agreement. Under a blanket lien agreement, the Bank obtains a lien against all of the member’s unencumbered eligible collateral assets and most ineligible assets to secure the member’s obligations with the Bank. Under a specific collateral pledge agreement, the Bank obtains a lien against specific eligible collateral assets of the member or its affiliate (if applicable) to secure the member’s obligations with the Bank. The member provides a detailed listing, as an addendum to the specific collateral agreement, identifying those assets pledged as collateral or delivered to the Bank or its third party custodian. Details regarding average lending values provided under both blanket liens and specific liens and delivery arrangements are available in the "Credit and Counterparty Risk - TCE and Collateral" discussion in Risk Management in Item 7. Management's Discussion and Analysis in the Bank's 2017 Form 10-K.

High quality investment securities are defined as U.S. Treasury and U.S. Agency securities, REFCORP bonds, GSE MBS, commercial and residential private label MBS with a minimum credit rating of single A, which the Bank considers as part of its evaluation of the collateral. In addition, municipal securities (or portions thereof) with a real estate nexus (e.g. proceeds primarily used for real estate development) with a minimum credit rating of single A are included. Members have the option to deliver such high quality investment securities to the Bank to increase their maximum borrowing capacity. Upon delivery, these securities are valued daily and all non-government or agency securities are subject to weekly ratings reviews. Reported amount also includes pledged FHLBank cash deposits.

For all of the Bank's members, the following table summarizes total eligible collateral values, after collateral weighting, by type under both blanket lien and specific collateral pledge agreements as of June 30, 2018 and December 31, 2017. The amount of excess collateral by individual borrowers varies significantly.

(dollars in millions)	June 30, 2018					December 31, 2017
All members	Amount			Percentage		Amount			Percentage
One-to-four single family residential mortgage loans	$	103,622.0		45.0	%	$	107,527.6		46.0	%
High quality investment securities	12,880.6			5.6		12,512.0			5.4
ORERC(1)/CFIeligible collateral	94,059.8			40.9		94,033.0			40.2
Multi-family residential mortgage loans	19,678.4			8.5		19,626.8			8.4
Total eligible collateral value	$	230,240.8		100.0	%	$	233,699.4		100.0	%
Total TCE	$	96,691.5				$	94,420.0
Collateralization ratio (eligible collateral value to TCE outstanding)	238.1		%			247.5		%

⁽¹⁾ Other real estate related collateral.

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For member borrowers, the following tables present information on a combined basis regarding the type of collateral securing their outstanding credit exposure and the collateral status as of June 30, 2018 and December 31, 2017.

	June 30, 2018
(dollars in millions)	Blanket Lien				Listing				Delivery				Total
	Amount		%		Amount		%		Amount		%		Amount		%
One-to-four single family residential   mortgage loans	$	79,645.0	39.6	%	$	19,901.5	88.1	%	$	4.6	1.3	%	$	99,551.1	44.4	%
High quality investment securities	9,776.4		4.9		2,693.0		11.9		316.8		91.5		12,786.2		5.7
ORERC/CFI eligible collateral	92,329.4		45.8		—		—		24.6		7.1		92,354.0		41.2
Multi-family residential mortgage   loans	19,575.9		9.7		—		—		0.3		0.1		19,576.2		8.7
Total eligible collateral value	$	201,326.7	100.0	%	$	22,594.5	100.0	%	$	346.3	100.0	%	$	224,267.5	100.0	%
Total TCE	$	80,418.1	83.2	%	$	15,962.0	16.5	%	$	311.4	0.3	%	$	96,691.5	100.0	%
Number of members	193		88.2	%	13		5.9	%	13		5.9	%	219		100.0	%

	December 31, 2017
(dollars in millions)	Blanket Lien				Listing				Delivery				Total
	Amount		%		Amount		%		Amount		%		Amount		%
One-to-four single family residential   mortgage loans	$	78,657.2	39.2	%	$	24,665.6	93.7	%	$	4.7	0.7	%	$	103,327.5	45.4	%
High quality investment securities	10,080.7		5.0		1,651.1		6.3		684.9		95.7		12,416.7		5.5
ORERC/CFI eligible collateral	92,192.4		46.1		—		—		24.8		3.5		92,217.2		40.5
Multi-family residential mortgage   loans	19,507.9		9.7		—		—		0.8		0.1		19,508.7		8.6
Total eligible collateral value	$	200,438.2	100.0	%	$	26,316.7	100.0	%	$	715.2	100.0	%	$	227,470.1	100.0	%
Total TCE	$	76,914.8	81.5	%	$	17,132.0	18.1	%	$	373.2	0.4	%	$	94,420.0	100.0	%
Number of members	200		89.2	%	10		4.5	%	14		6.3	%	224		100.0	%

Credit and Counterparty Risk - Investments

The Bank is also subject to credit risk on investments consisting of money market investments and investment securities. The Bank considers a variety of credit quality factors when analyzing potential investments, including collateral performance, marketability, asset class or sector considerations, local and regional economic conditions, credit ratings based on NRSROs, and/or the financial health of the underlying issuer. As of June 30, 2018 and December 31, 2017, the Bank’s carrying value of investment securities issued by entities other than the U.S. government, Federal agencies or GSEs was $3.4 billion and $1.6 billion, respectively.

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Investment Quality and External Credit Ratings. The following tables present the Bank’s investment carrying values as of June 30, 2018 and December 31, 2017, based on the lowest credit rating from the NRSROs (Moody’s, S&P and Fitch).

	June 30, 2018 (1)
	Long-Term Rating
(in millions)	AAA		AA		A		BBB		Below Investment Grade		Unrated		Total
Money market investments:
Interest-bearing deposits	$	—	$	—	$	615.0	$	—	$	—	$	—	$	615.0
Securities purchased under agreements to resell	1,000.0		—		—		—		500.0		—		1,500.0
Federal funds sold	—		3,000.0		2,975.0		—		—		—		5,975.0
Total money market investments	1,000.0		3,000.0		3,590.0		—		500.0		—		8,090.0
Investment securities:
U.S. Treasury obligations	—		98.0		—		—		—		—		98.0
Certificates of deposit	—		475.0		1,225.0		—		—		—		1,700.0
GSE and TVA obligations	—		2,864.2		—		—		—		—		2,864.2
State or local agency obligations	26.0		352.4		—		—		—		—		378.4
Total non-MBS	26.0		3,789.6		1,225.0		—		—		—		5,040.6
U.S. obligations single family MBS	—		536.1		—		—		—		—		536.1
GSE single-family MBS	—		3,202.5		—		—		—		—		3,202.5
GSE multifamily MBS	—		3,162.9		—		—		—		—		3,162.9
Private label residential MBS	—		5.8		28.4		88.5		370.1		221.6		714.4
Total MBS	—		6,907.3		28.4		88.5		370.1		221.6		7,615.9
Total investments	$	1,026.0	$	13,696.9	$	4,843.4	$	88.5	$	870.1	$	221.6	$	20,746.5

	December 31, 2017 (1)
	Long-Term Rating
(in millions)	AAA		AA		A		BBB		Below Investment Grade		Unrated		Total
Money market investments:
Interest-bearing deposits	$	—	$	—	$	275.0	$	—	$	—	$	—	$	275.0
Securities purchased under agreements to resell	—		—		—		—		500.0		—		500.0
Federal funds sold	—		2,650.0		3,000.0		—		—		—		5,650.0
Total money market investments	—		2,650.0		3,275.0		—		500.0		—		6,425.0
Investment securities:
Certificates of deposit	—		50.0		125.0		—		—		—		175.0
GSE and TVA obligations	—		3,210.4		—		—		—		—		3,210.4
State or local agency obligations	27.2		364.6		—		—		—		—		391.8
Other (2)	—		—		—		—		—		11.7		11.7
Total non-MBS	27.2		3,625.0		125.0		—		—		11.7		3,788.9
U.S. obligations single family MBS	—		603.7		—		—		—		—		603.7
GSE single-family MBS	—		2,822.4		—		—		—		—		2,822.4
GSE multifamily MBS	—		3,308.6		—		—		—		—		3,308.6
Private label residential MBS	—		5.2		18.4		106.1		547.1		126.4		803.2
Total MBS	—		6,739.9		18.4		106.1		547.1		126.4		7,537.9
Total investments	$	27.2	$	13,014.9	$	3,418.4	$	106.1	$	1,047.1	$	138.1	$	17,751.8

Notes:

⁽¹⁾ Balances exclude total accrued interest of $37.5 million and $29.7 million for June 30, 2018 and December 31, 2017, respectively.

⁽²⁾ Includes various deposits not held as investments as well as mutual fund equity investments held by the Bank through Rabbi trusts which are not generally assigned a credit rating. Effective January 1, 2018, the mutual fund equity investments were reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01. Refer to Note 1 in this Form 10-Q.

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The Bank also manages credit risk based on an internal credit rating system. For purposes of determining the internal credit rating, the Bank measures credit exposure through a process which includes internal credit review and various external factors, including placement of the counterparty on negative watch by one or more NRSROs. For internal reporting purposes, the incorporation of negative credit watch into the credit rating analysis of an investment may translate into a downgrade of one credit rating level from the external rating. The Bank does not rely solely on any NRSRO rating in deriving its final internal credit rating.

Short-term Investments. Within the portfolio of short-term investments, the Bank faces credit risk from unsecured exposures. The Bank's unsecured credit investments have maturities generally ranging between overnight and six months and may include the following types:

• Interest-bearing deposits. Primarily consists of unsecured deposits that earn interest;

• Federal funds sold. Unsecured loans of reserve balances at the Federal Reserve Banks between financial institutions that are made on an overnight and term basis; and

• Certificates of deposit. Unsecured negotiable promissory notes issued by banks and payable to the bearer at maturity or on demand.

Under the Bank’s Risk Governance Policy, the Bank can place money market investments, which include those investment types listed above, on an unsecured basis with large financial institutions with long-term credit ratings no lower than BBB. Management actively monitors the credit quality of these counterparties.

As of June 30, 2018, the Bank had unsecured exposure to 17 counterparties totaling $8.3 billion, with three counterparties each exceeding 10% of the total exposure. The following table presents the Bank's unsecured credit exposure with non-governmental counterparties by investment type at June 30, 2018 and December 31, 2017. The unsecured investment credit exposure presented may not reflect the average or maximum exposure during the period.

(in millions)
Carrying Value (1)	June 30, 2018		December 31, 2017
Interest-bearing deposits	$	615.0	$	275.0
Certificates of deposit	1,700.0		175.0
Federal funds sold	5,975.0		5,650.0
Total	$	8,290.0	$	6,100.0

Note:

⁽¹⁾ Excludes unsecured investment credit exposure to U.S. government, U.S. government agencies and instrumentalities, GSEs, and supranational entities.

As of June 30, 2018, 76% of the Bank’s unsecured investment credit exposures were to U.S. branches and agency offices of foreign commercial banks. The Bank actively monitors its credit exposures and the credit quality of its counterparties, including an assessment of each counterparty’s financial performance, capital adequacy, sovereign support, and the current market perceptions of the counterparties. General macro-economic, political and market conditions may also be considered when deciding on unsecured exposure. As a result, the Bank may limit or suspend existing exposures.

Finance Agency regulations include limits on the amount of unsecured credit the Bank 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 the Bank's 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. This percentage is 1% to 15% and is based on the counterparty's credit rating. The calculation of term extensions of unsecured credit includes on-balance sheet transactions, off-balance sheet commitments, and derivative transactions.

Finance Agency regulation also permits the Bank to extend additional unsecured credit for overnight transactions and for sales of Federal funds subject to continuing contracts that renew automatically. For overnight exposures only, the Bank's total unsecured exposure to a counterparty may not exceed twice the applicable regulatory limit, or a total of 2% to 30% of the eligible amount of regulatory capital, based on the counterparty's credit rating. As of June 30, 2018, the Bank was in compliance with the regulatory limits established for unsecured credit.

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The Bank's 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. The Bank's 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.

The following table presents the long-term credit ratings of the unsecured investment credit exposures by the domicile of the counterparty or the domicile of the counterparty's immediate parent for U.S. subsidiaries or branches and agency offices of foreign commercial banks based on the NRSROs used. This table does not reflect the foreign sovereign government's credit rating.

(in millions)
June 30, 2018 (1) (2)
Carrying Value
Domicile of Counterparty	Investment Grade (3)(4)
	AA		A		Total
Domestic	$	1,000.0	$	990.0	$	1,990.0
U.S. branches and agency offices of foreign commercial banks:
Australia	1,000.0		—		1,000.0
Austria	—		125.0		125.0
Canada	200.0		2,150.0		2,350.0
France	—		525.0		525.0
Netherlands	—		800.0		800.0
Norway	—		225.0		225.0
Sweden	1,275.0		—		1,275.0
Total U.S. branches and agency offices of foreign commercial banks	2,475.0		3,825.0		6,300.0
Total unsecured investment credit exposure	$	3,475.0	$	4,815.0	$	8,290.0

(in millions)
December 31, 2017 (1) (2)
Carrying Value
Domicile of Counterparty	Investment Grade (3)(4)
	AA		A		Total
Domestic	$	950.0	$	675.0	$	1,625.0
U.S. branches and agency offices of foreign commercial banks:
Australia	950.0		—		950.0
Canada	50.0		1,375.0		1,425.0
France	—		50.0		50.0
Netherlands	—		650.0		650.0
Norway	—		650.0		650.0
Sweden	750.0		—		750.0
Total U.S. branches and agency offices of foreign commercial banks	1,750.0		2,725.0		4,475.0
Total unsecured investment credit exposure	$	2,700.0	$	3,400.0	$	6,100.0

Notes:

⁽¹⁾ Does not reflect any changes in ratings, outlook or watch status occurring after June 30, 2018.

⁽²⁾ These ratings represent the lowest rating available for each security owned by the Bank based on the NRSROs used by the Bank. The Bank’s internal ratings may differ from those obtained from the NRSROs.

⁽³⁾ Excludes unsecured investment credit exposure to U.S. government, U.S. government agencies and instrumentalities, GSEs, and supranational entities.

⁽⁴⁾ Represents the NRSRO rating of the counterparty not the country. There were no AAA-rated investments at June 30, 2018 or December 31, 2017.

The following table presents the remaining contractual maturity of the Bank's unsecured investment credit exposure by the domicile of the counterparty or the domicile of the counterparty's parent for U.S. subsidiaries or branches and agency offices of

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foreign commercial banks. The Bank also mitigates the credit risk on investments by generally investing in investments that have short-term maturities.

(in millions)
June 30, 2018
Carrying Value
Domicile of Counterparty	Overnight		Due 2 days through 30 days		Due 31 days through 90 days		Total
Domestic	$	1,990.0	$	—	$	—	$	1,990.0
U.S. branches and agency offices of foreign commercial banks:
Australia	1,000.0		—		—		1,000.0
Austria	—		—		125.0		125.0
Canada	1,650.0		350.0		350.0		2,350.0
France	150.0		50.0		325.0		525.0
Netherlands	800.0		—		—		800.0
Norway	—		50.0		175.0		225.0
Sweden	1,000.0		100.0		175.0		1,275.0
Total U.S. branches and agency offices of foreign commercial banks	4,600.0		550.0		1,150.0		6,300.0
Total unsecured investment credit exposure	$	6,590.0	$	550.0	$	1,150.0	$	8,290.0

(in millions)
December 31, 2017
Carrying Value
Domicile of Counterparty	Overnight		Due 31 days through 90 days		Total
Domestic	$	1,625.0	$	—	$	1,625.0
U.S. branches and agency offices of foreign commercial banks:
Australia	950.0		—		950.0
Canada	1,300.0		125.0		1,425.0
France	—		50.0		50.0
Netherlands	650.0		—		650.0
Norway	650.0		—		650.0
Sweden	750.0		—		750.0
Total U.S. branches and agency offices of foreign commercial banks	4,300.0		175.0		4,475.0
Total unsecured investment credit exposure	$	5,925.0	$	175.0	$	6,100.0

U.S. Treasury Bills, Agency Securities, GSE Securities and State and Local Agency Obligations. In addition to U.S. Treasury bills and securities issued or guaranteed by U.S. Agencies or U.S. government corporations, the Bank invests in and is subject to credit risk related to GSE securities and state and local agency obligations. Further, the Bank maintains a portfolio of state and local agency obligations to enhance net interest income. These portfolios totaled $3.3 billion and $3.6 billion at June 30, 2018 and December 31, 2017, respectively.

Agency and GSE MBS. The Bank invests in and is subject to credit risk related to MBS issued or guaranteed by Federal agencies and GSEs that are directly supported by underlying mortgage loans. The Bank’s total agency and GSE MBS portfolio was $6.9 billion at June 30, 2018 and $6.7 billion at December 31, 2017.

Private Label MBS. The Bank also holds investments in private label MBS, which are supported by underlying mortgage loans.The Bank made investments in private label MBS that were rated AAA at the time of purchase with the exception of one, which was rated AA at the time of purchase. However, since the time of purchase, there have been significant downgrades. Current ratings are in the table below. In late 2007, the Bank discontinued the purchase of private label MBS.

The carrying value of the Bank’s private label MBS portfolio at June 30, 2018 was $714.4 million, which was a decrease of $88.8 million from December 31, 2017. This decline was primarily due to repayments.

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Unrealized gains of OTTI securities in AOCI at June 30, 2018 were $76.4 million compared to $72.9 million at December 31, 2017. The weighted average prices on OTTI securities were 90.4 and 89.5 at June 30, 2018 and December 31, 2017, respectively. These fair values are determined using unobservable inputs (i.e., Level 3) derived from multiple third-party pricing services. There continues to be unobservable inputs and alack of significant market activity for private label MBS; therefore, as of June 30, 2018, the Bank classified private label MBS as Level 3. The Bank uses the unadjusted prices received from the third-party pricing services in its process relating to fair value calculations and methodologies as described further in the Critical Accounting Policies and Estimates section in Item 7. Management’s Discussion and Analysis in the Bank's 2017 Form 10-K.

Participants in the mortgage market have often characterized single family loans based upon their overall credit quality at the time of origination, generally considering them to be Prime, Alt-A or subprime. There has been no universally accepted definition of these segments or classifications. The subprime segment of the mortgage market primarily served borrowers with poorer credit payment histories, and such loans typically had a mix of credit characteristics that indicate a higher likelihood of default and higher loss severities than Prime loans. Further, many mortgage participants classified single family loans with credit characteristics that range between Prime and subprime categories as Alt-A because these loans had a combination of characteristics of each category or may have been underwritten with low or no documentation compared to a full documentation mortgage loan. Industry participants often used this classification principally to describe loans for which the underwriting process was less rigorous and the documentation requirements of the borrower were reduced.

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Private Label MBS Collateral Statistics. The following tables provide collateral performance and credit enhancement information for the Bank’s private label MBS portfolio by par and by collateral type as of June 30, 2018.

	Private Label MBS
(dollars in millions)	Prime			Alt-A			Subprime			Total
Par by lowest external long-  term rating:
AA	$	5.7		$	—		$	—		$	5.7
A	12.4			16.0			—			28.4
BBB	82.0			3.8			3.2			89.0
Below investment grade:
BB	69.8			26.1			—			95.9
B	16.2			3.3			—			19.5
CCC	71.7			120.5			—			192.2
CC	—			31.3			—			31.3
D	48.0			10.3			—			58.3
Unrated	99.6			146.0			—			245.6
Total	$	405.4		$	357.3		$	3.2		$	765.9
Amortized cost	$	349.7		$	285.3		$	3.2		$	638.2
Gross unrealized losses (1)	(0.2		)	(0.1		)	(0.1		)	(0.4		)
Fair value	389.7			325.2			3.0			717.9
OTTI (2)
Total OTTI losses	$	—		$	—		$	—		$	—
OTTI losses reclassified to (from) AOCI	(0.2		)	(0.2		)	—			(0.4		)
Net OTTI losses, credit portion	$	(0.2	)	$	(0.2	)	$	—		$	(0.4	)
Weighted average fair value/par	96.1		%	91.0		%	93.8		%	93.7		%
Original weighted average credit support	6.8			10.3			12.5			8.4
Weighted-average credit support - current	8.5			3.6			48.5			6.3
Weighted avg. collateral delinquency (3)	10.3			15.1			15.2			12.5

Notes:

⁽¹⁾ Represents total gross unrealized losses including non-credit-related other-than-temporary impairment recognized in AOCI. The unpaid principal balance and amortized cost of private label MBS in a gross unrealized loss position were both $20.5 million at June 30, 2018.

⁽²⁾ For the six months ended June 30, 2018.

⁽³⁾ Delinquency information is presented at the cross-collateralization level.

OTTI. The Bank recognized $0.1 million of credit-related OTTI charges in earnings during the three months ended June 30, 2018 and none during the three months ended June 30, 2017, and $0.4 million and $0.7 million during the six months ended June 30, 2018 and 2017, respectively. Because the Bank does not intend to sell and it is not more likely than not that the Bank will be required to sell any OTTI securities before anticipated recovery of their amortized cost basis, the Bank does not have an additional OTTI charge for the difference between amortized cost and fair value. The Bank has not recorded OTTI on any other type of security (i.e., U.S. Agency MBS or non-MBS securities).

The Bank’s estimate of cash flows has a significant impact on the determination of credit losses. Cash flows expected to be collected are based on the performance and type of private label MBS and the Bank’s expectations of the economic environment. To ensure consistency in determination of the OTTI for private label MBS among all FHLBanks, each quarter the Bank works with the OTTI Governance Committee to update its OTTI analysis based on actual loan performance and current housing market assumptions in the collateral loss projection models, which generate the estimated cash flows from the Bank’s private label MBS. This process is described in Note 5 - OTTI to the unaudited financial statements included in this Form 10-Q.

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The Bank’s quarterly OTTI analysis is based on current and forecasted economic trends. Significant assumptions used on the Bank’s private label MBS as part of its second quarter of 2018 analysis are presented below.

	Significant Inputs for Private Label Residential MBS
Category at origination	Prepayment Rates	Default Rates	Loss Severities	Current Credit Enhancement
	Weighted Avg %	Weighted Avg %	Weighted Avg %	Weighted Avg %
Prime	13.7	10.1	24.7	7.4
Alt-A	14.0	19.3	38.2	3.7
Subprime	4.4	26.2	54.9	48.5
Total Private Label Residential MBS	13.8	14.6	31.4	5.8

The Bank’s life-to-date credit losses are concentrated in its 2006 and 2007 vintage bonds. These vintages represent 92% of life-to-date credit losses, of which 48% relates to Prime and 44% relates to Alt-A, with the remainder in subprime and HELOC. The Bank has recognized life to date OTTI as follows:

(dollars in millions)	June 30, 2018			June 30, 2017
Number of private label MBS with an OTTI charge:
Life-to-date	60			60
Still outstanding	38			39
Total OTTI credit loss recorded life-to-date	$	457.4		$	456.8
Principal write-downs on private label MBS	(154.6		)	(149.8		)
Credit losses on private label MBS no longer owned:
Private label MBS sold	(116.5		)	(116.5		)
Private label MBS matured (less principal write-downs realized)	(7.1		)	(5.5		)
Remaining amount of previously recognized OTTI credit losses	$	179.2		$	185.0

The table above excludes recoveries of OTTI through interest income, which occur if there is a significant increase in estimated cash flows whereby the Bank increases the yield on the Bank’s investment and recognizes recovery as interest income over the life of the investment. OTTI recovered through interest income on these securities was $4.9 million and $6.9 million for the second quarter of 2018 and 2017, respectively; $10.1 million and $13.6 million for the first six months of 2018 and 2017, respectively; and $148.9 million life-to-date. The OTTI recovered through interest income was recognized on 34 and 35 private label MBS securities for the first six months of 2018 and 2017, respectively. The same private label MBS can have multiple increases in cash flows that are deemed to be significant.

The Bank transfers private label MBS from HTM to AFS when an OTTI credit loss is recorded on a security. The Bank believes that a credit loss constitutes evidence of deterioration in the credit quality of the security. The Bank believes that the transfer increases its flexibility to potentially sell other-than-temporarily-impaired securities if it makes economic sense. There were no transfers during the first six months of 2018 and 2017.

Management will continue to evaluate all impaired securities, including those on which OTTI has been recorded. Material credit losses have occurred on private label MBS and may occur in the future. The specific amount of credit losses will depend on the actual performance of the underlying loan collateral, payments received on the securities themselves, as well as the Bank’s future modeling assumptions. Those securities for which the Bank is recognizing recovery of OTTI may be more likely to incur a credit loss due to the nature of the accounting. The Bank cannot estimate the future amount of any additional credit losses. The FASB issued guidance which will amend the accounting for credit losses beginning January 1, 2020. See Note 1 to the Financial Statements for additional discussion.

As discussed above, the projection of cash flows expected to be collected on private label MBS involves significant judgment with respect to key modeling assumptions. Therefore, on all private label MBS, the Bank performed a cash flow analysis under one additional scenario which was agreed to by the OTTI Governance Committee that represented meaningful, plausible and more adverse external assumptions. This more adverse scenario decreases the short-term housing price forecast by five percentage points and slows housing price recovery rates by 33%.The adverse scenario estimated cash flows were generated using the same model (Prime, Alt-A or subprime) as the base scenario. Using a model with more severe assumptions could increase the estimated credit loss recorded by the Bank. The securities included in this stress scenario were only those

36

that were in an unrealized loss position at June 30, 2018. Additionally, the maximum credit loss under the adverse case was limited to the amount of the security's unrealized loss. The adverse case housing price forecast is not management’s current best estimate of cash flows and is therefore not used as a basis for determining OTTI. The results of the analysis were immaterial.

Credit and Counterparty Risk - Mortgage Loans, BOB Loans and Derivatives

Mortgage Loans.The Finance Agency has authorized the Bank to hold mortgage loans under the MPF Program whereby the Bank acquires mortgage loans from participating members in a shared credit risk structure. These assets carry CEs, although the CE is not rated. The CE was originally established to be sufficient such that a Master Commitment (MC) has a AA credit rating. The Bank has revised this requirement to a BBB credit rating for all new MCs and legacy MCs for specific products. The Bank had net mortgage loans held for portfolio of $4.2 billion and $3.9 billion after an allowance for credit losses of $8.0 million at June 30, 2018 and $6.0 million at December 31, 2017, respectively.

Mortgage Insurers. The Bank’s MPF Program currently has credit exposure to nine mortgage insurance companies which provide PMI and/or Supplemental Mortgage Insurance (SMI) for the Bank’s various products. The Bank monitors the financial condition of these mortgage insurers. PMI for MPF Program loans must be issued by a mortgage insurance company on the approved mortgage insurance company list whenever PMI coverage is required.

None of the Bank’s mortgage insurers currently maintain a rating by at least one NRSRO of A+ or better. Given the credit deterioration of PMI providers, the estimate of the allowance for credit losses includes projected reduced claim payments. As required by the MPF Program, for originations with PMI, the ratings model currently requires additional CE from the PFI to compensate for the mortgage insurer rating when it is below A+.

The MPF Plus product required SMI under the MPF Program when each pool was established. At June 30, 2018, six of the 14 MPF Plus pools still have SMI policies in place. The Bank does not currently offer the MPF Plus product and has not purchased loans under MPF Plus Commitments since July 2006. Per MPF Program guidelines, the existing MPF Plus product exposure is required to be secured by the PFI once the SMI company is rated below AA-. The Finance Agency guidelines require mortgage insurers that underwrite SMI to be rated AA- or better. This requirement has been temporarily waived by the Finance Agency provided that the Bank otherwise mitigates the risk by requiring the PFI to secure the exposure. As of June 30, 2018, all of the SMI exposure is fully collateralized.

The unpaid principal balance and maximum coverage outstanding for seriously delinquent loans with PMI as of June 30, 2018 was $5.8 million and $2.3 million, respectively. The corresponding amounts at December 31, 2017 were $6.4 million and $2.6 million.

BOB Loans. See Note 1 - Summary of Significant Accounting Policies in Item 8 in the Bank's 2017 Form 10-K for a description of the BOB program. At June 30, 2018, the allowance for credit losses on BOB loans was $2.4 million, an increase of $0.5 million from December 31, 2017.

Derivative Counterparties. To manage interest rate risk, the Bank enters into derivative contracts. Derivative transactions may be either executed with a counterparty (referred to as uncleared derivatives) or cleared through a Futures Commission Merchant (i.e., clearing agent) or a Swap Execution Facility with a Derivatives Clearing Organization (referred to as cleared derivatives). For uncleared derivatives, the Bank transacts most of its derivatives with large banks and major broker-dealers. Some of these banks and broker-dealers or their affiliates buy, sell, and distribute consolidated obligations. The Bank is not a derivatives dealer and does not trade derivatives for short-term profit.

The Bank uses CME Clearing as the Clearing House for all cleared derivative transactions. Variation margin payments are characterized as daily settlement payments, rather than collateral. Initial margin is considered cash collateral. The Bank is subject to credit risk due to the risk of non-performance by counterparties to its derivative transactions. The amount of credit risk on derivatives depends on the extent to which netting procedures, collateral requirements, daily settlement and other credit enhancements are used and are effective in mitigating the risk. The Bank manages credit risk through credit analysis, collateral management, and other credit enhancements.

Uncleared Derivatives. The Bank is subject to non-performance by counterparties to its uncleared derivative transactions. The Bank requires collateral on uncleared derivative transactions. The amount of net unsecured credit exposure that is permissible with respect to each counterparty depends on the credit rating of that counterparty. A counterparty must deliver collateral to the Bank if the total market value of the Bank's exposure to that counterparty rises above a specific trigger point.

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As a result of these risk mitigation initiatives, the Bank does not anticipate any credit losses on its uncleared derivative transactions with counterparties as of June 30, 2018.

Cleared Derivatives. The Bank is subject to credit risk exposure to the Clearing Houses and clearing agent. The requirement that the Bank post initial margin and exchange variation margin settlement payments, through the clearing agent, to the Clearing Houses, exposes the Bank to institutional credit risk in the event that the clearing agent or the Clearing Houses fail to meet their obligations. Initial margin is the amount calculated based on anticipated exposure to future changes in the value of a swap and protects the Clearing Houses from market risk in the event of default by one of its clearing agents. Variation margin is the amount accumulated through daily settlement of the current exposure arising from changes in the market value of the position since the trade was executed. The Bank's use of cleared derivatives is intended to mitigate credit risk exposure because a central counterparty is substituted for individual counterparties and collateral postings and variation margin settlement payments are made daily for changes in the value of cleared derivatives through a clearing agent. The Bank does not anticipate any credit losses on its cleared derivatives as of June 30, 2018.

The contractual or notional amount of derivative transactions reflects the involvement of the Bank in the various classes of financial instruments. The maximum credit risk of the Bank with respect to derivative transactions is the estimated cost of replacing the derivative transactions if there is a default, minus the value of any related collateral, including initial margin and variation margin settlements on cleared derivatives. In determining maximum credit risk, the Bank considers accrued interest receivables and payables as well as the netting requirements to net assets and liabilities. The following table presents the derivative positions with non-member counterparties and member institutions to which the Bank has credit exposure at June 30, 2018 and December 31, 2017.

(in millions)	June 30, 2018
Credit Rating (1)	Notional Amount		Fair Value Before Collateral			Cash Collateral Pledged To (From) Counterparties			Net Credit Exposure to Counterparties
Non-member counterparties
Asset positions with credit exposure:
Uncleared derivatives
A	$	3,815.9	$	2.7		$	(0.9	)	$	1.8
BBB	145.0		0.6			—			0.6
Liability positions with credit exposure:
Uncleared derivatives
A	3,475.9		(14.1		)	14.6			0.5
Cleared derivatives (2)	41,396.2		—			112.6			112.6
Total derivative positions with credit exposure to non-member counterparties	48,833.0		(10.8		)	126.3			115.5
Member institutions (3)	35.8		—			—			—
Total	$	48,868.8	$	(10.8	)	$	126.3		$	115.5
Derivative positions without credit exposure	4,067.5
Total notional	$	52,936.3

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(in millions)	December 31, 2017
Credit Rating (1)	Notional Amount		Fair Value Before Collateral			Cash Collateral Pledged To (From) Counterparties		Net Credit Exposure to Counterparties
Non-member counterparties
Asset positions with credit exposure:
Uncleared derivatives
A	$	234.0	$	0.3		$	—	$	0.3
Liability positions with credit exposure:
Uncleared derivatives
A	3,861.9		(7.7		)	8.0		0.3
Cleared derivatives (2)	33,528.4		(0.7		)	80.8		80.1
Total derivative positions with credit exposure to non-member counterparties	37,624.3		(8.1		)	88.8		80.7
Member institutions (3)	25.5		—			—		—
Total	$	37,649.8	$	(8.1	)	$	88.8	$	80.7
Derivative positions without credit exposure	7,134.2
Total notional	$	44,784.0

Notes:

⁽¹⁾ This table does not reflect any changes in rating, outlook or watch status occurring after June 30, 2018. The ratings presented in this table represent the lowest long-term counterparty credit rating available for each counterparty based on the NRSROs used by the Bank.

⁽²⁾ Represents derivative transactions cleared through Clearing Houses.

⁽³⁾ Member institutions include mortgage delivery commitments.

The following tables summarize the Bank’s uncleared derivative counterparties which represent more than 10% of the Bank’s total notional amount outstanding and net credit exposure as of June 30, 2018 and December 31, 2017.

Notional Greater Than 10%	June 30, 2018				December 31, 2017
(dollars in millions) Derivative Counterparty	Credit Rating	Notional		% of Notional	Credit Rating	Notional		% of Notional
Barclays Bank	A	$	3,606.9	31.2	A	$	3,416.9	30.4
Citibank, NA	A	2,500.0		21.7	A	2,510.0		22.3
Morgan Stanley Capital	A	1,361.0		11.8	BBB	1,288.8		11.5
All others	n/a	4,072.3		35.3	n/a	4,039.9		35.8
Total		$	11,540.2	100.0		$	11,255.6	100.0

Net Credit Exposure   Greater Than 10%	June 30, 2018				December 31, 2017
(dollars in millions) Derivative Counterparty	Credit Rating	Net Credit Exposure		% of Net Credit Exposure	Credit Rating	Net Credit Exposure		% of Net Credit Exposure
BNP Paribas	A	$	1.4	47.5	A	$	0.3	50.4
Citigroup Financial	BBB	0.6		19.5	(1)	(1)		(1)
Barclays Bank	A	0.4		14.1	A	0.2		31.6
Societe Generale	(1)	(1)		(1)	A	0.1		18.0
All others	n/a	0.5		18.9	n/a	—		—
Total		$	2.9	100.0		$	0.6	100.0

Notes:

⁽¹⁾ The counterparty had no credit exposure for the period-end.

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To manage interest rate risk, the Bank enters into derivative contracts. Some of these derivatives are with U.S. branches of financial institutions located in Europe. In terms of counterparty credit risk exposure, European financial institutions are exposed to the Bank as shown below.

(in millions)	June 30, 2018						December 31, 2017
Country of Counterparty	Market Value of Total Exposure		Collateral Obligation (Net Exposure)		Collateral Pledged by the Bank		Market Value of Total Exposure		Collateral Obligation (Net Exposure)		Collateral Pledged by the Bank
Switzerland	$	16.7	$	16.7	$	16.5	$	8.7	$	8.7	$	8.1
France	13.5		13.5		13.2		6.7		6.7		6.7
United Kingdom	0.1		—		—		1.1		1.1		1.3
Germany	8.5		4.1		4.0		4.1		0.7		0.6
Total	$	38.8	$	34.3	$	33.7	$	20.6	$	17.2	$	16.7

Note: The average maturity of these derivative contracts is July 2023 at June 30, 2018 and July 2022 at December 31, 2017, respectively. Collateral Obligation (Net Exposure) is defined as Market Value of Total Exposure minus delivery threshold and minimum collateral transfer requirements.

In addition, the Bank is exposed to counterparty credit risk with U.S. branches of European financial institutions, as presented in the tables below.

(in millions)	June 30, 2018						December 31, 2017
Country of Counterparty	Market Value of Total Exposure		Collateral Obligation (Net Exposure)		Collateral Pledged to the Bank		Market Value of Total Exposure		Collateral Obligation (Net Exposure)		Collateral Pledged to the Bank
France	$	1.4	$	—	$	—	$	0.2	$	—	$	—
United Kingdom	1.2		1.2		0.9		—		—		—
Total	$	2.6	$	1.2	$	0.9	$	0.2	$	—	$	—

Note: The average maturity of these derivative contracts is July 2021 at June 30, 2018 and August 2020 at December 31, 2017, respectively. Collateral Obligation (Net Exposure) is defined as Market Value of Total Exposure minus delivery threshold and minimum collateral transfer requirements.

To appropriately assess potential credit risk to its European holdings, the Bank annually underwrites each counterparty and country and regularly monitors NRSRO rating actions and other publications for changes to credit quality. The Bank also actively monitors its counterparties' approximate indirect exposure to European sovereign debt and considers this exposure as a component of its credit risk review process.

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Liquidity and Funding Risk

As a wholesale bank, the Bank employs financial strategies which enable it to expand and contract its assets, liabilities and capital in response to changes in member credit demand, membership composition and other market factors. In addition, the Bank is required to maintain a level of liquidity in accordance with the FHLBank Act, FHFA regulations and policies established by its management and board of directors. The Bank's liquidity resources are designed to support these strategies and requirements and are described further in the Bank's 2017 Form 10-K.

Asset/Liability Maturity Profile. The Bank is focused on maintaining adequate liquidity and funding balances with its financial assets and financial liabilities, and the FHLBanks work collectively to manage system-wide liquidity and funding needs. The FHLBanks jointly monitor the combined risks, primarily by tracking the maturities of financial assets and financial liabilities. The Bank also monitors the funding balance between financial assets and financial liabilities and is committed to prudent risk management practices. 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.

Sources of Liquidity. The Bank's primary sources of liquidity are proceeds from the issuance of consolidated obligations and a liquidity investment portfolio, along with maturing advances and proceeds from the issuance of capital stock.

Consolidated Obligations. The Bank’s ability to operate its business, meet its obligations and generate net interest income depends primarily on the ability to issue large amounts of various debt structures at attractive rates. Investor demand for FHLBank debt remains strong as money market reform continues to provide strong demand for discount and floating rate notes. Consolidated obligation bonds and discount notes are rated Aaa with stable outlook/P-1 by Moody’s and AA+ with stable outlook/A-1+ by S & P, as of June 30, 2018. These ratings measure the likelihood of timely payment of principal and interest. Note 10 - Consolidated Obligations to the unaudited financial statements in this Form 10-Q provides additional information regarding the Bank’s consolidated obligations.

Liquidity Investment Portfolio. The Bank’s operating liquidity is comprised of cash, interest-bearing deposits, Federal funds sold and securities purchased under agreements to resell. In addition, U.S. Treasury and GSE obligations that are classified as trading securities are also included in operating liquidity.

Contingency Liquidity. The Bank’s access to the capital markets has never been interrupted to the extent that the Bank’s ability to meet its obligations was compromised, and the Bank currently has no reason to believe that its ability to issue consolidated obligations will be impeded to that extent. The Bank maintains a contingency liquidity portfolio in the event it is unable to access the capital markets. In addition to its liquidity investment portfolio above, the Bank's sources of contingency liquidity include advances maturing within five days, certificates of deposit, unencumbered repurchase-eligible assets within its AFS and HTM securities portfolios and MBS repayments expected within five days. Uses of contingency liquidity include net settlements of consolidated obligations, member loan commitments, mortgage loan purchase commitments, deposit outflows and maturing other borrowed funds. Excess contingency liquidity is calculated as the difference between sources and uses of contingency liquidity. At June 30, 2018 and December 31, 2017, excess contingency liquidity was approximately $24.3 billion and $25.6 billion, respectively.

Funding and Debt Issuance. Changes or disruptions in the capital markets could limit the Bank’s ability to issue consolidated obligations. During the first half of 2018, the Bank maintained continual access to funding. Access to short-term debt markets has been reliable because investors, driven by increased liquidity preferences and risk aversion, including the effects of money market fund reform, have sought the FHLBank’s short-term debt as an asset of choice. This has led to advantageous funding opportunities and increased utilization of debt maturing in one year or less. The FHLBanks have comparatively stable access to funding through a diverse investor base at relatively favorable spreads to U.S. Treasury rates.

Refinancing Risk. There are inherent risks in utilizing short-term funding to support longer-dated assets and the Bank may be exposed to refinancing and investor concentration risks (collectively, refinancing risk). Refinancing risk includes the risk the Bank could have difficulty in rolling over short-term obligations when market conditions change. In managing and monitoring the amounts of financial assets that require refinancing, the Bank considers their contractual maturities, as well as certain assumptions regarding expected cash flows (i.e., estimated prepayments, embedded call optionality, and scheduled amortizations). The Bank and the OF jointly monitor the combined refinancing risk of the FHLBank system. In managing and monitoring the amounts of assets that require refunding, the Bank may consider contractual maturities of the financial assets, as well as certain assumptions regarding expected cash flows (i.e., estimated prepayments and scheduled amortizations).

41

Interest Rate Risk. The Bank may use a portion of the short-term consolidated obligations issued to fund both short- and long-term LIBOR-indexed assets. However, funding longer-term LIBOR-indexed assets with shorter-term liabilities generally does not expose the Bank to interest rate risk because the rates on the LIBOR-indexed assets reset similar to the liabilities. The Bank measures and monitors interest rate-risk with commonly used methods and metrics, which include the calculations of market value of equity, duration of equity, and duration gap.

Regulatory Liquidity Requirements.The Bank is required to maintain a level of liquidity in accordance with certain Finance Agency guidance. Under these policies and guidelines, the Bank is required to maintain sufficient liquidity in an amount at least equal to its anticipated net cash outflows under two different scenarios. One scenario assumes that the Bank cannot access the capital markets for a period of 15 days and that, during that time, members do not renew any maturing, prepaid and called advances. The second scenario assumes that the Bank cannot access the capital markets for five days and during that period, an FHLBank will automatically renew maturing and called advances for all members except very large members, provided that the member is well-rated by its primary Federal regulator or its state regulator equivalent for insurance companies and is well-rated by the Bank's internal credit rating system. The Bank was in compliance with these requirements at June 30, 2018. Refer to the Liquidity and Funding Risk section in Item 7. of the Bank's 2017 Form 10-K for additional information.

Joint and Several Liability. Although the Bank is primarily liable for its portion of consolidated obligations (i.e., those issued on its behalf), the Bank is also jointly and severally liable with the other 10 FHLBanks for the payment of principal and interest on consolidated obligations of all the FHLBanks. The Finance Agency, in its discretion and notwithstanding any other provisions, may at any time order any FHLBank to make principal or interest payments due on any consolidated obligation, even in the absence of default by the primary obligor. To the extent that an FHLBank makes any payment on a consolidated obligation on behalf of another FHLBank, the paying FHLBank shall be entitled to reimbursement from the non-paying FHLBank, which has a corresponding obligation to reimburse the FHLBank to the extent of such assistance and other associated costs. However, if the Finance Agency determines that the non-paying FHLBank is unable to satisfy its obligations, then the Finance Agency may allocate the outstanding liability among the remaining FHLBanks on a pro rata basis in proportion to each FHLBank’s participation in all consolidated obligations outstanding, or on any other basis the Finance Agency may determine. Finance Agency regulations govern the issuance of debt on behalf of the FHLBanks and authorize the FHLBanks to issue consolidated obligations, through the OF as its agent. The Bank is not permitted to issue individual debt without Finance Agency approval. See Note 14 - Consolidated Obligations of the audited financial statements in Item 8. Financial Statements and Supplementary Financial Data in the Bank's 2017 Form 10-K for additional information.

Operational and Business Risks

Operational Risk. Operational Risk is defined as the risk of loss resulting from inadequate or failed internal processes, people, and systems, or from external events and encompasses risks related to housing mission-related activities, including activities associated with affordable housing programs or goals. The Bank considers various sources of risk of unexpected loss, including human error, fraud, unenforceability of legal contracts, deficiencies in internal controls and/or information systems, or damage from fire, theft, natural disaster or acts of terrorism. Generally, the category of operational risk includes loss exposures of a physical or procedural nature. Specifically, operational risk includes compliance, fraud, information/transaction, legal, cyber, vendor and people risk. The Bank has established operational risk policies and procedures to manage each of the specific operational risks.

Business Risk. Business risk is the risk of an adverse impact on the Bank’s profitability or financial or business strategies resulting from external factors that may occur in the short-term and/or long-term. This risk includes the potential for strategic business constraints to be imposed through regulatory, legislative or political changes. The Bank’s Risk Management Committee monitors economic indicators and the external environment in which the Bank operates and attempts to mitigate this risk through long-term strategic planning.

For additional information, on operating and business risks, see the "Operating and Business Risks" discussion in the Risk Management section of Item 7. in the Bank's 2017 Form 10-K.

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Item 1: Financial Statements (unaudited)

Federal Home Loan Bank of Pittsburgh

Statements of Income (unaudited)

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Interest income:
Advances	$	408,974		$	237,128		$	730,241		$	443,350
Prepayment fees on advances, net	4			49			4			132
Interest-bearing deposits	2,495			576			3,667			754
Securities purchased under agreements to resell	1,330			453			2,448			635
Federal funds sold	26,408			15,824			55,705			25,219
Trading securities	2,922			2,816			5,738			5,632
Available-for-sale (AFS) securities	56,088			46,225			107,835			90,219
Held-to-maturity (HTM) securities	18,410			13,675			31,379			29,250
Mortgage loans held for portfolio	36,368			31,803			71,828			62,610
Total interest income	552,999			348,549			1,008,845			657,801
Interest expense:
Consolidated obligations - discount notes	102,376			57,353			198,187			92,294
Consolidated obligations - bonds	331,460			179,580			580,219			344,800
Mandatorily redeemable capital stock	77			64			162			127
Deposits	1,970			1,128			3,626			1,917
Other borrowings	—			10			9			16
Total interest expense	435,883			238,135			782,203			439,154
Net interest income	117,116			110,414			226,642			218,647
Provision (benefit) for credit losses	423			(90		)	2,795			(92		)
Net interest income after provision (benefit) for credit losses	116,693			110,504			223,847			218,739
Other noninterest income (loss):
Total OTTI losses (Note 5)	—			—			—			—
OTTI losses reclassified to (from) AOCI (Note 5)	(80		)	—			(342		)	(664		)
Net OTTI losses, credit portion (Note 5)	(80		)	—			(342		)	(664		)
Net gains (losses) on trading securities (Note 2)	(2,710		)	5,321			(11,402		)	7,606
Net gains (losses) on derivatives and hedging activities (Note 9)	4,059			(4,295		)	8,171			135
Standby letters of credit fees	5,695			5,958			11,483			12,044
Other, net	637			21			1,410			667
Total other noninterest income	7,601			7,005			9,320			19,788
Other expense:
Compensation and benefits	12,349			10,354			24,149			25,276
Other operating	7,553			7,137			14,214			13,888
Finance Agency	1,406			1,290			2,956			2,699
Office of Finance	1,217			911			2,407			2,375
Total other expense	22,525			19,692			43,726			44,238
Income before assessments	101,769			97,817			189,441			194,289
Affordable Housing Program (AHP) assessment	10,184			9,788			18,960			19,442
Net income	$	91,585		$	88,029		$	170,481		$	174,847

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

43

Federal Home Loan Bank of Pittsburgh

Statements of Comprehensive Income (unaudited)

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Net income	$	91,585		$	88,029		$	170,481		$	174,847
Other comprehensive income (loss):
Net unrealized gains (losses) on AFS securities	714			31,654			(13,901		)	63,029
Net non-credit portion of OTTI gains (losses) on AFS securities	3,229			8,329			3,404			6,706
Reclassification of net (gains) losses included in net income relating to hedging activities	(4		)	(4		)	(12		)	(11		)
Pension and post-retirement benefits	176			86			296			172
Total other comprehensive income (loss)	4,115			40,065			(10,213		)	69,896
Total comprehensive income	$	95,700		$	128,094		$	160,268		$	244,743

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

44

Federal Home Loan Bank of Pittsburgh

Statements of Condition (unaudited)

(in thousands)	June 30, 2018		December 31, 2017
ASSETS
Cash and due from banks	$	161,924	$	3,414,992
Interest-bearing deposits	620,888		280,340
Federal funds sold	5,975,000		5,650,000
Securities purchased under agreements to resell	1,500,000		500,000
Investment securities:
Trading securities (Note 2)	535,095		399,296
AFS securities at fair value (Note 3)	8,318,998		9,044,387
HTM securities; fair value of $3,802,259 and $1,894,534 respectively (Note 4)	3,802,405		1,883,051
Total investment securities	12,656,498		11,326,734
Advances, net (Note 6)	76,340,011		74,279,798
Mortgage loans held for portfolio (Note 7), net of allowance for credit losses of     $8,054 and $5,954, respectively (Note 8)	4,171,476		3,923,123
Banking on Business (BOB) loans, net of allowance for credit losses of     $2,402 and $1,964, respectively	16,214		14,083
Accrued interest receivable	209,555		164,459
Premises, software and equipment, net	8,621		8,179
Derivative assets (Note 9)	115,533		80,756
Other assets	38,609		20,542
Total assets	$	101,814,329	$	99,663,006

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

45

Federal Home Loan Bank of Pittsburgh

Statements of Condition (unaudited)

(continued)

(in thousands, except par value)	June 30, 2018		December 31, 2017
LIABILITIES AND CAPITAL
Liabilities
Deposits:
Interest-bearing	$	520,670	$	514,275
Noninterest-bearing	30,422		23,801
Total deposits	551,092		538,076
Consolidated obligations:(Note 10)
Discount notes	26,988,892		36,193,289
Bonds	68,681,867		57,533,722
Total consolidated obligations	95,670,759		93,727,011
Mandatorily redeemable capital stock (Note 11)	4,530		5,113
Accrued interest payable	170,415		118,473
AHP payable	95,341		91,563
Derivative liabilities (Note 9)	15,027		19,521
Other liabilities	40,264		235,761
Total liabilities	96,547,428		94,735,518
Commitments and contingencies (Note 14)
Capital (Note 11)
Capital stock - putable ($100 par value) issued and outstanding       39,505 and 36,587 shares, respectively	3,950,450		3,658,656
Retained earnings:
Unrestricted	899,131		875,395
Restricted	316,569		282,473
Total retained earnings	1,215,700		1,157,868
Accumulated Other Comprehensive Income (AOCI)	100,751		110,964
Total capital	5,266,901		4,927,488
Total liabilities and capital	$	101,814,329	$	99,663,006

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

46

Federal Home Loan Bank of Pittsburgh

Statements of Cash Flows (unaudited)

	Six months ended June 30,
(in thousands)	2018			2017
OPERATING ACTIVITIES
Net income	$	170,481		$	174,847
Adjustments to reconcile net income to net cash provided by   (used in) operating activities:
Depreciation and amortization	(23,324		)	1,142
Net change in derivative and hedging activities	159,048			(28,790		)
Net OTTI credit losses	342			664
Other adjustments	2,798			(93		)
Net change in:
Trading securities	(145,456		)	(8,525		)
Accrued interest receivable	(45,423		)	(16,410		)
Other assets	(10,130		)	(1,361		)
Accrued interest payable	51,943			1,083
Other liabilities	1,177			7,782
Net cash provided by operating activities	$	161,456		$	130,339
INVESTING ACTIVITIES
Net change in:
Interest-bearing deposits (including ($548) and $778 (to) from other FHLBanks for mortgage loan program)	$	(413,718	)	$	(176,764	)
Securities purchased under agreements to resell	(1,000,000		)	1,500,000
Federal funds sold	(325,000		)	(2,853,000		)
AFS securities:
Proceeds	910,550			642,524
Purchases	(434,628		)	(535,482		)
HTM securities:
Net change in short-term	(1,525,000		)	(150,000		)
Proceeds from long-term maturities	151,879			286,396
Purchases of long-term	(546,802		)	(98,286		)
Advances:
Repaid	737,362,625			416,070,963
Originated	(739,591,271		)	(413,335,106		)
Mortgage loans held for portfolio:
Proceeds	203,710			226,398
Purchases	(463,609		)	(382,700		)
Proceeds from sales of foreclosed assets	5,123			3,627
Premises, software and equipment:
Purchases	(1,939		)	(686		)
Net cash provided by (used in) investing activities	$	(5,668,080	)	$	1,197,884
The accompanying notes are an integral part of these financial statements.

47

Federal Home Loan Bank of Pittsburgh Statements of Cash Flows (unaudited)
(continued)
	Six months ended June 30,
(in thousands)	2018			2017
FINANCING ACTIVITIES
Net change in deposits	$	13,881		$	32,100
Net proceeds from issuance of consolidated obligations:
Discount notes	208,065,350			97,327,761
Bonds	32,090,222			23,153,680
Payments for maturing and retiring consolidated obligations:
Discount notes	(217,258,536		)	(93,915,228		)
Bonds	(20,835,923		)	(27,397,101		)
Proceeds from issuance of capital stock	2,734,464			2,096,726
Payments for repurchase/redemption of capital stock	(2,442,653		)	(2,119,283		)
Payments for repurchase/redemption of mandatorily redeemable capital stock	(600		)	(466		)
Cash dividends paid	(112,649		)	(83,624		)
Net cash provided by (used in) financing activities	$	2,253,556		$	(905,435	)
Net increase (decrease) in cash and due from banks	$	(3,253,068	)	$	422,788
Cash and due from banks at beginning of the period	3,414,992			3,587,605
Cash and due from banks at end of the period	$	161,924		$	4,010,393
Supplemental disclosures:
Interest paid	$	755,916		$	435,191
AHP payments	15,182			10,023
Transfers of mortgage loans to real estate owned	2,537			2,679
Variation margin recharacterized as settlement payments on derivative contracts	—			44,674

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

48

Federal Home Loan Bank of Pittsburgh

Statements of Changes in Capital (unaudited)

	Capital Stock - Putable					Retained Earnings
(in thousands)	Shares		Par Value			Unrestricted			Restricted		Total			AOCI		Total Capital
December 31, 2016	37,554		$	3,755,411		$	771,661		$	214,547	$	986,208		$	52,296	$	4,793,915
Comprehensive income	—		—			139,878			34,969		174,847			69,896		244,743
Issuance of capital stock	20,967		2,096,726			—			—		—			—		2,096,726
Repurchase/redemption of capital stock	(21,192	)	(2,119,283		)	—			—		—			—		(2,119,283		)
Net shares reclassified to mandatorily    redeemable capital stock	(3	)	(269		)	—			—		—			—		(269		)
Cash dividends	—		—			(83,624		)	—		(83,624		)	—		(83,624		)
June 30, 2017	37,326		$	3,732,585		$	827,915		$	249,516	$	1,077,431		$	122,192	$	4,932,208

	Capital Stock - Putable					Retained Earnings
(in thousands)	Shares		Par Value			Unrestricted			Restricted		Total			AOCI			Total Capital
December 31, 2017	36,587		$	3,658,656		$	875,395		$	282,473	$	1,157,868		$	110,964		$	4,927,488
Comprehensive income	—		—			136,385			34,096		170,481			(10,213		)	160,268
Issuance of capital stock	27,345		2,734,464			—			—		—			—			2,734,464
Repurchase/redemption of capital stock	(24,427	)	(2,442,653		)	—			—		—			—			(2,442,653		)
Net shares reclassified to mandatorily    redeemable capital stock	—		(17		)	—			—		—			—			(17		)
Cash dividends	—		—			(112,649		)	—		(112,649		)	—			(112,649		)
June 30, 2018	39,505		$	3,950,450		$	899,131		$	316,569	$	1,215,700		$	100,751		$	5,266,901

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

49

Federal Home Loan Bank of Pittsburgh

Notes to Unaudited Financial Statements

Background Information

The Bank, a federally chartered corporation, is one of 11 district Federal Home Loan Banks (FHLBanks). The FHLBanks are government-sponsored enterprises (GSEs) that serve the public by increasing the availability of credit for residential mortgages and community development. The Bank provides a readily available, low-cost source of funds to its member institutions. The Bank is a cooperative, which means that current members own nearly all of the outstanding capital stock of the Bank. All holders of the Bank’s capital stock may, to the extent declared by the Board, receive dividends on their capital stock. Regulated financial depositories and insurance companies engaged in residential housing finance that maintain their principal place of business (as defined by Finance Agency regulation) in Delaware, Pennsylvania or West Virginia may apply for membership. Community Development Financial Institutions (CDFIs) which meet membership regulation standards are also eligible to become Bank members. State and local housing associates that meet certain statutory and regulatory criteria may also borrow from the Bank. While eligible to borrow, state and local housing associates are not members of the Bank and, as such, do not hold capital stock.

All members must purchase stock in the Bank. The amount of capital stock a member owns is based on membership requirements (membership asset value) and activity requirements (i.e., outstanding advances, letters of credit, and the principal balance of certain residential mortgage loans sold to the Bank). The Bank considers those members with capital stock outstanding in excess of 10% of total capital stock outstanding to be related parties. See Note 12 - Transactions with Related Parties for additional information.

The Federal Housing Finance Agency (Finance Agency) is the independent regulator of the FHLBanks. The mission of the Finance Agency is to ensure the FHLBanks operate in a safe and sound manner so they serve as a reliable source for liquidity and funding for housing finance and community investment. Each FHLBank operates as a separate entity with its own management, employees and board of directors. The Bank does not consolidate any off-balance sheet special-purpose entities or other conduits.

As provided by the Federal Home Loan Bank Act (FHLBank Act) or Finance Agency regulation, the Bank’s debt instruments, referred to as consolidated obligations, are joint and several obligations of all the FHLBanks and are the primary source of funds for the FHLBanks. These funds are primarily used to provide advances, purchase mortgages from members through the MPF Program and purchase certain investments. See Note 10 - Consolidated Obligations for additional information. The Office of Finance (OF) is a joint office of the FHLBanks established to facilitate the issuance and servicing of the consolidated obligations of the FHLBanks and to prepare the combined quarterly and annual financial reports of all the FHLBanks. Deposits, other borrowings, and capital stock issued to members provide other funds. The Bank primarily invests these funds in short-term investments to provide liquidity. The Bank also provides member institutions with correspondent services, such as wire transfer, safekeeping and settlement with the Federal Reserve.

The accounting and financial reporting policies of the Bank conform to U.S. Generally Accepted Accounting Principles (GAAP). Preparation of the unaudited financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, as well as the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses. Actual results could differ from those estimates. In addition, from time to time certain amounts in the prior period may be reclassified to conform to the current presentation. To the extent that any reclassifications were made, the reclassifications did not have a material impact on the Bank's financial statements. In the opinion of management, all normal recurring adjustments have been included for a fair statement of this interim financial information. These unaudited financial statements should be read in conjunction with the audited financial statements for the year ended December 31, 2017 included in the Bank's 2017 Form 10-K.

50

Notes to Unaudited Financial Statements (continued)

Note 1 – Changes in Accounting Principle and Recently Issued Accounting Standards and Interpretations

The Bank adopted the following new accounting standards during the six months ended June 30, 2018.

Standard	Description	Adoption Date and Transition	Effect on the Financial Statements or Other Significant Matters
Accounting Standards Update (ASU) 2017-07: Improving the presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	This ASU requires entities to disaggregate the service cost component of net benefit cost from other components and present the other components outside of income from operations. It also requires that only the service cost component be eligible for capitalization.	The Bank adopted this ASU on January 1, 2018. The presentation of service costs separately was adopted on a retrospective basis. The limiting of capitalization to service costs was adopted on a prospective basis.	The adoption of this ASU did not materially impact the Bank’s results of operations. It resulted in an immaterial reclassification of other pension costs from "Compensation and benefits" to "Other operating" in the Statement of Income for all periods presented.
ASU 2016-15: Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments	This ASU is focused on reducing diversity in practice in the Statement of Cash Flows by providing clarification on eight classification issues.	The Bank adopted this ASU on January 1, 2018 on a modified retrospective basis.	The adoption of this ASU resulted in the Bank including interest paid on consolidated obligation discount notes in its "Interest paid" supplemental disclosure in the Statement of Cash Flows for all periods presented.
ASU 2016-01: Financial Instruments - Recognition and Measurement of Financial Assets and Financial Liabilities	This ASU amends certain requirements for accounting for the recognition and measurement of financial instruments. Most notably, this guidance revises the accounting for equity securities, financial instruments measured under the fair value option, and certain disclosure requirements for fair value of financial instruments.	The Bank adopted this ASU on January 1, 2018 on a modified retrospective basis.	The adoption of this ASU did not materially impact the Bank’s financial condition or results of operations. The Bank reclassified immaterial investments from "Trading securities" and "AFS securities" to "Other assets" in the Statement of Condition on January 1, 2018. The Bank also reflected the reduced disclosure requirements for financial instruments not recognized at fair value in the financial statements.
ASU 2014-09: Revenue from Contracts with Customers in conjunction with ASU 2017-05: Gains and Losses from the Derecognition of Nonfinancial Assets	ASU 2014-09 was issued to increase comparability across industries by providing a single, comprehensive revenue recognition model for all contracts with customers. It will require recognition of revenue to reflect the economics of the transaction and will require expanded disclosures regarding revenue recognition. ASU 2017-05 clarifies that the guidance in ASU 2014-09 should also be applied to the accounting for derecognition of nonfinancial assets, including sales of real estate assets such as REO.	This Bank adopted this ASU on January 1, 2018 on a modified retrospective basis.	The adoption of these ASUs did not impact the Bank’s financial condition or results of operations, as the majority of the Bank’s revenue is derived from financial instruments, which are excluded from the scope of this guidance.

51

Notes to Unaudited Financial Statements (continued)

The following table provides a brief description of recently issued accounting standards which may have an impact on the Bank.

Standard	Description	Effective Date and Transition	Effect on the Financial Statements or Other Significant Matters
ASU 2018-11: Targeted Improvements to Accounting for Leases	This ASU provides an additional transition method for the new leases standard, ASU 2016-02.	This ASU is effective for the Bank beginning January 1, 2019 and will be adopted on a modified retrospective basis as of the effective date.	The Bank will utilize the additional transition method to apply the new leases standard as of its effective date. Upon adoption, the Bank will not be required to restate comparative reporting periods.
ASU 2018-08: Contributions Received and Contributions Made	This ASU clarifies the distinction between exchange transactions and contributions, including whether a contribution is conditional.	This ASU is effective for the Bank beginning January 1, 2019 and will be adopted on a modified prospective basis.	The Bank is continuing to evaluate the impact of this ASU on its financial statements.
ASU 2017-12: Targeted Improvements to Accounting for Hedging Activities	This ASU makes amendments to the accounting for derivatives and hedging activities intended to better portray the economics of the transactions.	This ASU is effective for the Bank beginning January 1, 2019 and allows for early adoption. The guidance will be applied to existing hedging relationships as of the beginning of the year of adoption.	The Bank is continuing to evaluate the impact of this ASU on its financial statements. The Bank's hedging strategies, documentation, effectiveness testing, and presentation and disclosure may be impacted by this ASU.
ASU 2017-08: Premium Amortization on Purchased Callable Debt Securities	This ASU requires that the amortization period for premiums on certain purchased callable debt securities be shortened to the earliest call date, rather than contractual maturity.	This ASU is effective for the Bank beginning January 1, 2019 and will be adopted on a modified retrospective basis.	The Bank is continuing to evaluate the impact of this ASU on its financial statements. The Bank does not believe that the impact will be material to its financial condition or results of operations as it does not typically purchase callable debt securities at premiums.
ASU 2016-13: Financial Instruments - Credit Losses	This ASU makes substantial changes to the accounting for credit losses on certain financial instruments. It replaces the current incurred loss model with a new model based on lifetime expected credit losses, which the FASB believes will result in more timely recognition of credit losses.	This ASU is effective for the Bank no later than January 1, 2020 and will generally be adopted on a modified retrospective basis, with the exception of previously-OTTI AFS debt securities, for which the guidance will be applied prospectively.	The Bank is continuing to evaluate the impact of this ASU on its financial statements and will continue to monitor interpretations made by standard-setters and regulators. The Bank expects its allowance for credit losses on MPF loans to increase; however, the Bank does not currently have an estimate of the amount of the expected increase. The Bank has not yet determined the impact this standard will have on its private label MBS securities. The Bank will continue to evaluate the appropriateness of an allowance for credit losses on other specific elements of its financial statements.

52

Notes to Unaudited Financial Statements (continued)

Standard	Description	Effective Date and Transition	Effect on the Financial Statements or Other Significant Matters
ASU 2016-02: Leases	This ASU amends the accounting for leases. It will require lessees to recognize a right-of-use asset and lease liability for virtually all leases.	This ASU is effective for the Bank no later than January 1, 2019 and will be adopted on a modified retrospective basis as of the effective date.	The Bank is continuing to evaluate the impact of this ASU on its financial statements. Upon adoption, the Bank will increase its assets and liabilities for capitalized leases. The Bank’s most significant lease is its headquarters. Future minimum lease payments under current accounting standards are disclosed in Note 20 - Commitments and Contingencies in its 2017 Form 10-K. Substantially all of these payments represent the building lease.

53

Notes to Unaudited Financial Statements (continued)

Note 2 – Trading Securities

The following table presents trading securities as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Mutual funds (1)	$	—	$	9,657
U.S. Treasury obligations	97,972		—
GSE and TVA obligations	437,123		389,639
Total	$	535,095	$	399,296

Note:

⁽¹⁾ Reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01, effective January 1, 2018. Refer to Note 1 in this Form 10-Q.

The following table presents net gains (losses) on trading securities for the second quarter and the first six months of 2018 and 2017.

	Three months ended June 30,					Six months ended June 30,
(in thousands)	2018			2017		2018			2017
Net unrealized gains (losses) on trading securities held at period-end	$	(2,710	)	$	5,321	$	(11,402	)	$	7,606
Net realized gains (losses) on trading securities sold/matured during the period	—			—		—			—
Net gains (losses) on trading securities	$	(2,710	)	$	5,321	$	(11,402	)	$	7,606

54

Notes to Unaudited Financial Statements (continued)

Note 3 – Available-for-Sale (AFS) Securities

The following tables present AFS securities as of June 30, 2018 and December 31, 2017.

	June 30, 2018
(in thousands)	Amortized Cost (1)		OTTI Recognized in AOCI (2)		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-MBS:
GSE and TVA obligations	$	2,397,893	$	—	$	33,175	$	(4,003	)	$	2,427,065
State or local agency obligations	264,032		—		2,292		(5,352		)	260,972
Total non-MBS	$	2,661,925	$	—	$	35,467	$	(9,355	)	$	2,688,037
MBS:
U.S. obligations single family MBS	$	165,238	$	—	$	541	$	(51	)	$	165,728
GSE single-family MBS	2,512,230		—		15,329		(6,490		)	2,521,069
GSE multifamily MBS	2,476,465		—		1,402		(9,416		)	2,468,451
Private label residential MBS	399,474		—		76,357		(118		)	475,713
Total MBS	$	5,553,407	$	—	$	93,629	$	(16,075	)	$	5,630,961
Total AFS securities	$	8,215,332	$	—	$	129,096	$	(25,430	)	$	8,318,998

	December 31, 2017
(in thousands)	Amortized Cost (1)		OTTI Recognized in AOCI (2)		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-MBS:
Mutual funds (3)	$	2,015	$	—	$	—	$	—		$	2,015
GSE and TVA obligations	2,798,838		—		27,460		(5,519		)	2,820,779
State or local agency obligations	264,812		—		5,546		(994		)	269,364
Total non-MBS	$	3,065,665	$	—	$	33,006	$	(6,513	)	$	3,092,158
MBS:
U.S. obligations single family MBS	$	178,882	$	—	$	465	$	(74	)	$	179,273
GSE single-family MBS	2,654,315		—		15,238		(3,758		)	2,665,795
GSE multifamily MBS	2,579,625		—		5,162		(2,169		)	2,582,618
Private label residential MBS	451,737		—		72,953		(147		)	524,543
Total MBS	$	5,864,559	$	—	$	93,818	$	(6,148	)	$	5,952,229
Total AFS securities	$	8,930,224	$	—	$	126,824	$	(12,661	)	$	9,044,387

Notes:

⁽¹⁾ Amortized cost includes adjustments made to the cost basis of an investment for accretion of discounts and/or amortization of premiums, collection of cash, OTTI recognized, and/or fair value hedge accounting adjustments.

⁽²⁾ Represents the non-credit portion of an OTTI recognized during the life of the security.

⁽³⁾ Reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01, effective January 1, 2018. Refer to Note 1 in this Form 10-Q.

As of June 30, 2018, the amortized cost of the Bank’s MBS classified as AFS included net purchased discounts of $16.9 million, credit losses of $179.2 million and OTTI-related accretion adjustments of $69.6 million. As of December 31, 2017, these amounts were $16.3 million, $178.8 million and $62.1 million, respectively.

55

Notes to Unaudited Financial Statements (continued)

The following table presents a reconciliation of the AFS OTTI loss recognized through AOCI to the total net non-credit portion of OTTI gains on AFS securities in AOCI as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Non-credit portion of OTTI losses	$	—	$	—
Net unrealized gains on OTTI securities since their last OTTI credit charge	76,357		72,953
Net non-credit portion of OTTI gains on AFS securities in AOCI	$	76,357	$	72,953

The following tables summarize the AFS securities with unrealized losses as of June 30, 2018 and December 31, 2017. The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position.

	June 30, 2018
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses (1)
Non-MBS:
GSE and TVA obligations	$	16,945	$	(338	)	$	914,515	$	(3,665	)	$	931,460	$	(4,003	)
State or local agency obligations	49,670		(865		)	74,288		(4,487		)	123,958		(5,352		)
Total non-MBS	$	66,615	$	(1,203	)	$	988,803	$	(8,152	)	$	1,055,418	$	(9,355	)
MBS:
U.S. obligations single-family MBS	$	—	$	—		$	25,572	$	(51	)	$	25,572	$	(51	)
GSE single-family MBS	194,089		(2,350		)	150,692		(4,140		)	344,781		(6,490		)
GSE multifamily MBS	1,461,775		(9,416		)	—		—			1,461,775		(9,416		)
Private label residential MBS	—		—			3,043		(118		)	3,043		(118		)
Total MBS	$	1,655,864	$	(11,766	)	$	179,307	$	(4,309	)	$	1,835,171	$	(16,075	)
Total	$	1,722,479	$	(12,969	)	$	1,168,110	$	(12,461	)	$	2,890,589	$	(25,430	)

	December 31, 2017
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses (1)
Non-MBS:
GSE and TVA obligations	$	12,386	$	(114	)	$	1,262,810	$	(5,405	)	$	1,275,196	$	(5,519	)
State or local agency obligations	4,371		(78		)	77,859		(916		)	82,230		(994		)
Total non-MBS	$	16,757	$	(192	)	$	1,340,669	$	(6,321	)	$	1,357,426	$	(6,513	)
MBS:
U.S. obligations single family MBS	$	—	$	—		$	37,330	$	(74	)	$	37,330	$	(74	)
GSE single-family MBS	150,170		(651		)	272,925		(3,107		)	423,095		(3,758		)
GSE multifamily MBS	424,932		(2,096		)	10,796		(73		)	435,728		(2,169		)
Private label residential MBS	—		—			3,013		(147		)	3,013		(147		)
Total MBS	$	575,102	$	(2,747	)	$	324,064	$	(3,401	)	$	899,166	$	(6,148	)
Total	$	591,859	$	(2,939	)	$	1,664,733	$	(9,722	)	$	2,256,592	$	(12,661	)

Note:

⁽¹⁾ Total unrealized losses equal the sum of “OTTI Recognized in AOCI” and “Gross Unrealized Losses” in the first two tables of this Note 3.

56

Notes to Unaudited Financial Statements (continued)

Redemption Terms. The amortized cost and fair value of AFS securities by contractual maturity as of June 30, 2018 and December 31, 2017 are presented below. Expected maturities of some securities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment fees.

(in thousands)	June 30, 2018				December 31, 2017
Year of Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in one year or less	$	984,940	$	982,701	$	1,002,015	$	999,160
Due after one year through five years	298,276		301,970		607,802		611,231
Due after five years through ten years	731,591		746,432		676,975		687,993
Due in more than ten years	647,118		656,934		778,873		793,774
Total non-MBS	2,661,925		2,688,037		3,065,665		3,092,158
MBS	5,553,407		5,630,961		5,864,559		5,952,229
Total AFS securities	$	8,215,332	$	8,318,998	$	8,930,224	$	9,044,387

Interest Rate Payment Terms.  The following table details interest payment terms at June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Amortized cost of AFS non-MBS:
Fixed-rate	$	2,576,985	$	2,980,770
Variable-rate	84,940		84,895
Total non-MBS	$	2,661,925	$	3,065,665
Amortized cost of AFS MBS:
Fixed-rate	$	1,090,644	$	1,142,290
Variable-rate	4,462,763		4,722,269
Total MBS	$	5,553,407	$	5,864,559
Total amortized cost of AFS securities	$	8,215,332	$	8,930,224

57

Notes to Unaudited Financial Statements (continued)

Note 4 – Held-to-Maturity (HTM) Securities

The following tables present HTM securities as of June 30, 2018 and December 31, 2017.

	June 30, 2018
(in thousands)	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Fair Value
Non-MBS:
Certificates of deposit	$	1,700,000	$	63	$	(53	)	$	1,700,010
State or local agency obligations	117,455		75		(4,399		)	113,131
Total non-MBS	$	1,817,455	$	138	$	(4,452	)	$	1,813,141
MBS:
U.S. obligations single-family MBS	$	370,376	$	3,576	$	—		$	373,952
GSE single-family MBS	681,427		4,049		(203		)	685,273
GSE multifamily MBS	694,501		3,373		(10,207		)	687,667
Private label residential MBS	238,646		3,879		(299		)	242,226
Total MBS	$	1,984,950	$	14,877	$	(10,709	)	$	1,989,118
Total HTM securities	$	3,802,405	$	15,015	$	(15,161	)	$	3,802,259

	December 31, 2017
(in thousands)	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Fair Value
Non-MBS:
Certificates of deposit	$	175,000	$	30	$	—		$	175,030
State or local agency obligations	122,400		62		(5,571		)	116,891
Total non-MBS	$	297,400	$	92	$	(5,571	)	$	291,921
MBS:
U.S. obligations single-family MBS	$	424,341	$	4,112	$	—		$	428,453
GSE single-family MBS	156,597		2,323		(39		)	158,881
GSE multifamily MBS	726,008		9,186		(3,298		)	731,896
Private label residential MBS	278,705		4,953		(275		)	283,383
Total MBS	$	1,585,651	$	20,574	$	(3,612	)	$	1,602,613
Total HTM securities	$	1,883,051	$	20,666	$	(9,183	)	$	1,894,534

58

Notes to Unaudited Financial Statements (continued)

The following tables summarize the HTM securities with unrealized losses as of June 30, 2018 and December 31, 2017. The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position.

	June 30, 2018
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-MBS:
Certificates of deposit	$	449,947	$	(53	)	$	—	$	—		$	449,947	$	(53	)
State or local agency obligations	—		—			102,371		(4,399		)	102,371		(4,399		)
Total non-MBS	$	449,947	$	(53	)	$	102,371	$	(4,399	)	$	552,318	$	(4,452	)
MBS:
GSE single-family MBS	$	74,524	$	(166	)	$	4,988	$	(37	)	$	79,512	$	(203	)
GSE multifamily MBS	250,746		(5,646		)	92,016		(4,561		)	342,762		(10,207		)
Private label residential MBS	3,617		(18		)	13,454		(281		)	17,071		(299		)
Total MBS	$	328,887	$	(5,830	)	$	110,458	$	(4,879	)	$	439,345	$	(10,709	)
Total	$	778,834	$	(5,883	)	$	212,829	$	(9,278	)	$	991,663	$	(15,161	)

	December 31, 2017
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-MBS:
State or local agency obligations	$	—	$	—		$	105,119	$	(5,571	)	$	105,119	$	(5,571	)
MBS:
GSE single-family MBS	$	—	$	—		$	5,633	$	(39	)	$	5,633	$	(39	)
GSE multifamily MBS	169,089		(790		)	94,241		(2,508		)	263,330		(3,298		)
Private label residential MBS	—		—			27,079		(275		)	27,079		(275		)
Total MBS	$	169,089	$	(790	)	$	126,953	$	(2,822	)	$	296,042	$	(3,612	)
Total	$	169,089	$	(790	)	$	232,072	$	(8,393	)	$	401,161	$	(9,183	)

Redemption Terms. The amortized cost and fair value of HTM securities by contractual maturity as of June 30, 2018 and December 31, 2017 are presented below. Expected maturities of some securities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment fees.

(in thousands)	June 30, 2018				December 31, 2017
Year of Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Non-MBS:
Due in one year or less	$	1,700,000	$	1,700,010	$	175,000	$	175,030
Due after one year through five years	10,685		10,760		—		—
Due after five years through ten years	28,305		27,677		42,010		41,211
Due after ten years	78,465		74,694		80,390		75,680
Total non-MBS	1,817,455		1,813,141		297,400		291,921
MBS	1,984,950		1,989,118		1,585,651		1,602,613
Total HTM securities	$	3,802,405	$	3,802,259	$	1,883,051	$	1,894,534

59

Notes to Unaudited Financial Statements (continued)

Interest Rate Payment Terms. The following table details interest rate payment terms at June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Amortized cost of HTM non-MBS:
Fixed-rate	$	1,700,000	$	175,000
Variable-rate	117,455		122,400
Total non-MBS	$	1,817,455	$	297,400
Amortized cost of HTM MBS:
Fixed-rate	$	1,291,410	$	787,395
Variable-rate	693,540		798,256
Total MBS	$	1,984,950	$	1,585,651
Total HTM securities	$	3,802,405	$	1,883,051

Note 5 – Other-Than-Temporary Impairment (OTTI)

The Bank evaluates its individual AFS and HTM securities in an unrealized loss position for OTTI on a quarterly basis. The Bank assesses whether there is OTTI by performing an analysis to determine if any securities will incur a credit loss, the amount of which could be up to the difference between the security's amortized cost basis and its fair value, and records any difference in its Statement of Income. For information on the Bank’s accounting for OTTI, see Note 1 - Summary of Significant Accounting Policies to the audited financial statements in the Bank's 2017 Form 10-K. For information about how the Bank projects cash flows expected to be collected, see Note 7 - OTTI to the audited financial statements in the Bank’s 2017 Form 10-K.

The Bank performed a cash flow analysis using two third-party models to assess whether the amortized cost basis of its private label residential MBS will be recovered. During the second quarter of 2018, the OTTI Governance Committee developed a short-term housing price forecast using whole percentages with changes ranging from (8.0)% to 13.0% over the 12 month period beginning April 1, 2018. For the vast majority of markets the short-term forecast has changes from 2.0% to 7.0%. Thereafter, a unique path is projected for each geographic area based on an internally developed framework derived from historical data.

All of the Bank's other-than-temporarily impaired securities were classified as AFS as of June 30, 2018. The "Total OTTI securities" balances below summarize the Bank’s securities as of June 30, 2018 for which an OTTI has been recognized during the life of the security. The "Private label MBS with no OTTI" balances below represent AFS securities on which an OTTI was not taken. The sum of these two amounts reflects the total AFS private label MBS balance.

	OTTI Recognized During the Life of the Security
(in thousands)	Unpaid Principal Balance		Amortized Cost (1)		Fair Value
Private label residential MBS:
Prime	$	219,705	$	164,814	$	201,843
Alt-A	303,321		231,500		270,827
Total OTTI securities	523,026		396,314		472,670
Private label MBS with no OTTI	3,160		3,160		3,043
Total AFS private label MBS	$	526,186	$	399,474	$	475,713

Notes:

⁽¹⁾ Amortized cost includes adjustments made to the cost basis of an investment for accretion of discounts and/or amortization of premiums, collection of cash, and/or OTTI recognized.

60

Notes to Unaudited Financial Statements (continued)

The following table presents the rollforward of the amounts related to OTTI credit losses recognized during the life of the security for which a portion of the OTTI charges was recognized in AOCI for the three and six months ended June 30, 2018 and 2017.

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Beginning balance	$	205,938		$	230,450		$	210,875		$	236,460
Additions:
Additional OTTI credit losses for which an OTTI charge was previously recognized(1)	80			—			342			664
Reductions:
Securities sold and matured during the period	—			(191		)	—			(191		)
Increases in cash flows expected to be collected (accreted as interest income over the remaining lives of the applicable securities)	(4,913		)	(6,906		)	(10,112		)	(13,580		)
Ending balance	$	201,105		$	223,353		$	201,105		$	223,353

Notes:

⁽¹⁾ For the three months ended June 30, 2018 and 2017, additional OTTI credit losses for which an OTTI charge was previously recognized relate to all securities that were previously impaired prior to April 1 of the applicable year. For the six months ended June 30, 2018 and 2017, additional OTTI credit losses for which an OTTI charge was previously recognized relate to all securities that were previously impaired prior to January 1 of the applicable year.

All Other AFS and HTM Investments. At June 30, 2018, the Bank held certain securities in an unrealized loss position. These unrealized losses were considered to be temporary as the Bank expects to recover the entire amortized cost basis on the remaining securities in unrealized loss positions based on the creditworthiness of the underlying creditor, guarantor, or implicit government support, and the Bank neither intends to sell these securities nor considers it more likely than not that the Bank would be required to sell any such security before its anticipated recovery. As a result, the Bank did not consider any of these other investments to be other-than-temporarily impaired at June 30, 2018.

61

Notes to Unaudited Financial Statements (continued)

Note 6 – Advances

General Terms. The Bank offers fixed- and variable-rate advance products with different maturities, interest rates, payment characteristics and optionality. Fixed-rate advances generally have maturities ranging from one day to 30 years. Variable-rate advances generally have maturities ranging from less than 30 days to ten years, and the interest rates reset periodically at a fixed spread to LIBOR or other specified indices.

At June 30, 2018 and December 31, 2017, the Bank had advances outstanding, including AHP advances, with interest rates ranging from 0.83% to 7.40%. AHP subsidized advances have an interest rate of 5.50%.

The following table details the Bank’s advances portfolio by year of contractual maturity as of June 30, 2018 and December 31, 2017.

(dollars in thousands)	June 30, 2018					December 31, 2017
Year of Contractual Maturity	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Due in 1 year or less	$	33,000,442		2.14	%	$	31,606,861		1.56	%
Due after 1 year through 2 years	13,876,672			2.20		11,786,189			1.63
Due after 2 years through 3 years	20,335,058			2.38		18,456,775			1.71
Due after 3 years through 4 years	6,470,173			2.43		10,445,920			1.85
Due after 4 years through 5 years	2,146,531			2.57		1,254,184			2.14
Thereafter	781,011			2.76		833,938			2.72
Total par value	76,609,887			2.26	%	74,383,867			1.67	%
Discount on AHP advances	—					(1		)
Deferred prepayment fees	(400		)			(613		)
Hedging adjustments	(269,476		)			(103,455		)
Total book value	$	76,340,011				$	74,279,798

The Bank also offers convertible advances. Convertible advances allow the Bank to convert an advance from one interest rate structure to another. When issuing convertible advances, the Bank may purchase put options from a member that allow the Bank to convert the fixed-rate advance to a variable-rate advance at the current market rate or another structure after an agreed-upon lockout period. A convertible advance carries a lower interest rate than a comparable-maturity, fixed-rate advance without the conversion feature. In addition, the Bank offers certain advances to members that provide a member the right, based upon predetermined exercise dates, to prepay the advance prior to maturity without incurring prepayment or termination fees (returnable advances).

At June 30, 2018 and December 31, 2017, the Bank did not have any advances with embedded features that met the requirements to separate the embedded feature from the host contract and designate the embedded feature as a stand-alone derivative.

62

Notes to Unaudited Financial Statements (continued)

The following table summarizes advances by the earlier of (i) year of contractual maturity or next call date and (ii) year of contractual maturity or next convertible date as of June 30, 2018 and December 31, 2017.

	Year of Contractual Maturity or Next Call Date				Year of Contractual Maturity or Next Convertible Date
(in thousands)	June 30, 2018		December 31, 2017		June 30, 2018		December 31, 2017
Due in 1 year or less	$	38,050,442	$	35,856,861	$	33,025,942	$	31,632,361
Due after 1 year through 2 years	13,061,672		11,771,189		13,871,172		11,780,689
Due after 2 years through 3 years	17,110,058		17,231,775		20,335,058		18,456,775
Due after 3 years through 4 years	5,460,173		7,445,920		6,470,173		10,445,920
Due after 4 years through 5 years	2,146,531		1,244,184		2,140,531		1,254,184
Thereafter	781,011		833,938		767,011		813,938
Total par value	$	76,609,887	$	74,383,867	$	76,609,887	$	74,383,867

Interest Rate Payment Terms.  The following table details interest rate payment terms for advances as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Fixed-rate – overnight	$	5,437,295	$	3,988,232
Fixed-rate – term:
Due in 1 year or less	17,731,754		15,998,268
Thereafter	18,302,045		14,685,606
Total fixed-rate	41,471,094		34,672,106
Variable-rate:
Due in 1 year or less	9,831,393		11,620,361
Thereafter	25,307,400		28,091,400
Total variable-rate	35,138,793		39,711,761
Total par value	$	76,609,887	$	74,383,867

Credit Risk Exposure and Security Terms. The Bank’s potential credit risk from advances is concentrated in commercial banks and savings institutions. As of June 30, 2018, the Bank had advances of $57.8 billion outstanding to the five largest borrowers, which represented 75.5% of total advances outstanding. Of these five, three had outstanding advance balances that were each in excess of 10% of the total portfolio at June 30, 2018.

As of December 31, 2017, the Bank had advances of $57.5 billion outstanding to the five largest borrowers, which represented 77.3% of total advances outstanding. Of these five, three had outstanding advance balances that were each in excess of 10% of the total portfolio at December 31, 2017.

See Note 8 for information related to the Bank's allowance for credit losses.

63

Notes to Unaudited Financial Statements (continued)

Note 7 – Mortgage Loans Held for Portfolio

Under the MPF Program, the Bank invests in mortgage loans that it purchases from its participating members and housing associates. The Bank’s participating members originate, service, and credit enhance residential mortgage loans that are sold to the Bank. See Note 12 for further information regarding transactions with related parties.

The following table presents balances as of June 30, 2018 and December 31, 2017 for mortgage loans held for portfolio.

(in thousands)	June 30, 2018			December 31, 2017
Fixed-rate long-term single-family mortgages (1)	$	3,868,035		$	3,592,083
Fixed-rate medium-term single-family mortgages (1)	223,785			246,493
Total par value	4,091,820			3,838,576
Premiums	70,861			70,197
Discounts	(3,749		)	(3,418		)
Hedging adjustments	20,598			23,722
Total mortgage loans held for portfolio	$	4,179,530		$	3,929,077

Note:

⁽¹⁾ Long-term is defined as greater than 15 years. Medium-term is defined as a term of 15 years or less.

The following table details the par value of mortgage loans held for portfolio outstanding categorized by type as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Conventional loans	$	3,893,779	$	3,631,292
Government-guaranteed/insured loans	198,041		207,284
Total par value	$	4,091,820	$	3,838,576

See Note 8 - Allowance for Credit Losses for information related to the Bank's credit risk on mortgage loans and allowance for credit losses.

Note 8 – Allowance for Credit Losses

The Bank has established an allowance methodology for each of the Bank’s portfolio segments: credit products, government-guaranteed or insured MPF loans held for portfolio, conventional MPF loans held for portfolio, and BOB loans.

Credit Products. The Bank manages its total credit exposure (TCE), which includes advances, letters of credit, advance commitments, and other credit product exposure, through an integrated approach. This approach generally requires a credit limit to be established 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 each borrower's need for a reliable source of funding. In addition, the Bank lends to its members in accordance with theFHLBankAct and Finance Agency regulations. Specifically, the FHLBank Act requires the Bank to obtain collateral to fully secure credit products. The estimated value of the collateral required to secure each member’s credit products is calculated by applying collateral weightings, or haircuts, to the value of the collateral. The Bank accepts cash, certain investment securities, residential mortgage loans, deposits, and other real estate related assets as collateral. In addition, Community Financial Institutions (CFIs) are eligible to utilize expanded statutory collateral provisions for small business, agriculture, and community development loans. The Bank’s capital stock owned by the borrowing member is pledged as secondary collateral. 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 require additional or substitute collateral to help ensure that credit products continue to be secured by adequate collateral. Management of the Bank believes that these policies effectively manage the Bank’s credit risk from credit products.

Based upon the financial condition of the member, the Bank either allows a member to retain physical possession of the collateral assigned to the Bank or requires the member to specifically deliver physical possession or control of the collateral to the Bank or its custodians. However, regardless of the member's financial condition, the Bank always takes possession or control of securities used as collateral. The Bank perfects its security interest in all pledged collateral. The FHLBank Act affords any security interest granted to the Bank by a member (or an affiliate of a member) priority over the claims or rights of

64

Notes to Unaudited Financial Statements (continued)

any other party, except for claims or rights of a third party that would be otherwise entitled to priority under applicable law and that are held by a bona fide purchaser for value or by a secured party holding a prior perfected security interest.

Using a risk-based approach, the Bank considers the payment status, collateral types and concentration levels, and borrower’s financial condition to be indicators of credit quality on its credit products. At June 30, 2018 and December 31, 2017, the Bank had rights to collateral on a member-by-member basis with a value in excess of its outstanding extensions of credit.

The Bank continues to evaluate and, as necessary, make changes to its collateral guidelines based on current market conditions. At June 30, 2018 and December 31, 2017, the Bank did not have any credit products that were past due, on nonaccrual status, or considered impaired. In addition, the Bank did not have any credit products considered to be troubled debt restructurings (TDRs).

Based upon the collateral held as security, its credit extension policies, collateral policies, management’s credit analysis and the repayment history on credit products, the Bank has not incurred any credit losses on credit products since inception. Accordingly, the Bank has not recorded any allowance for credit losses for these products.

BOB Loans. Both the probability of default and loss given default are determined and used to estimate the allowance for credit losses on BOB loans. Loss given default is considered to be 100% due to the fact that the BOB program has no collateral or credit enhancements. The probability of default is based on the actual performance of the BOB program. The Bank considers BOB loans that are delinquent to be nonperforming assets. The allowance for credit losses on BOB loans was immaterial as of June 30, 2018 and December 31, 2017 and is not included in any of the tables that follow.

TDRs - BOB Loans. The Bank offers a BOB loan deferral, which the Bank considers a TDR. A deferred BOB loan is not required to pay principal or accrue interest for a period up to one year. The credit loss is measured by factoring expected shortfalls incurred as of the reporting date. BOB loan TDRs are not material to the Bank’s financial condition, results of operations, or cash flows.

MortgageLoans- Government-Guaranteed or Insured. The Bank invests in government-guaranteed or insured fixed-rate mortgage loans secured by one-to-four family residential properties. Government-guaranteed mortgage loans are those insured or guaranteed by the Federal Housing Administration (FHA), Department of Veterans Affairs (VA), the Rural Housing Service (RHS) of the Department of Agriculture and/or by Housing and Urban Development (HUD). Any losses from such loans are expected to be recovered from those entities. If not, losses from such loans must be contractually absorbed by the servicers. Therefore, there is no allowance for credit losses on government-guaranteed or insured mortgage loans.

Mortgage Loans - Conventional MPF. The allowances for conventional loans are determined by analyses that include consideration of various data observations such as past performance, current performance, loan portfolio characteristics, collateral-related characteristics, industry data, and prevailing economic conditions. The measurement of the allowance for credit losses includes: (1) reviewing all residential mortgage loans at the individual master commitment level; (2) reviewing specifically identified collateral-dependent loans for impairment; and/or (3) reviewing homogeneous pools of residential mortgage loans.

The Bank’s allowance for credit losses takes into consideration the credit enhancement (CE) associated with conventional mortgage loans under the MPF Program. Specifically, the determination of the allowance generally considers expected Primary Mortgage Insurance (PMI), Supplemental Mortgage Insurance (SMI), and other CE amounts. Any incurred losses that are expected to be recovered from the CE reduce the Bank’s allowance for credit losses.

For conventional MPF loans, credit losses that are not fully covered by PMI are allocated to the Bank up to an agreed-upon amount, referred to as the first loss account (FLA). The FLA functions as a tracking mechanism for determining the point after which the participating financial institution (PFI) is required to cover losses. The Bank pays the PFI a fee, a portion of which may be based on the credit performance of the mortgage loans, in exchange for absorbing the second layer of losses up to an agreed-upon CE amount. The CE amount may be a direct obligation of the PFI and/or an SMI policy paid for by the PFI, and may include performance-based fees which can be withheld to cover losses allocated to the Bank (referred to as recaptured CE fees). The PFI is required to pledge collateral to secure any portion of its CE amount that is a direct obligation. A receivable which is assessed for collectability is generally established for losses expected to be recovered by withholding CE fees. Estimated losses exceeding the CE, if any, are incurred by the Bank. At June 30, 2018 and December 31, 2017, the MPF exposure under the FLA was $27.7 million and $26.3 million, respectively. The Bank records CE fees paid to PFIs as a reduction to mortgage loan interest income. The Bank incurred CE fees of $1.1 million and $0.9 million for the second quarter 2018 and 2017, and $2.2 million and $1.8 million for the six months endedJune 30,2018 and 2017, respectively.

65

Notes to Unaudited Financial Statements (continued)

Individually Evaluated Mortgage Loans. The Bank evaluates certain conventional mortgage loans for impairment individually. This includes impaired loans considered collateral-dependent loans where repayment is expected to be provided by the sale of the underlying property, which primarily consists of MPF loans that are 180 days or more delinquent, TDRs and other loans where the borrower has filed for bankruptcy.

The estimated credit losses on impaired collateral-dependent loans are separately determined because sufficient information exists to make a reasonable estimate of the inherent loss for such loans on an individual basis. The incurred loss on each loan is equal to the difference between the carrying value of the loan and the estimated fair value of the collateral less estimated selling costs and recovery through PMI. The estimated fair value is determined based on a value provided by a third party's retail-based Automated Valuation Model (AVM). The Bank adjusts the AVM based on the amount it has historically received on liquidations. The resulting loss is reduced by available CE. The estimated credit loss on individually evaluated MPF loans is charged-off against the reserve. However, if the estimated loss can be recovered through CE, a receivable is established, resulting in a net charge-off. The CE receivable is evaluated for collectibility, and a reserve, included as part of the allowance for credit losses, is established if required.

Collectively Evaluated Mortgage Loans. For the remainder of the portfolio, the Bank evaluates the homogeneous mortgage loan portfolio collectively for impairment. The allowance for credit loss methodology for mortgage loans considers loan pool specific attribute data, applies loss severities and incorporates the CEs of the MPF Program and PMI. The probability of default and loss given default are based on the actual 12-month historical performance of the Bank’s mortgage loans. Actual probability of default was determined by applying migration analysis to categories of mortgage loans (current, 30 days past due, 60 days past due, and 90 days past due). Actual loss given default was determined based on realized losses incurred on the sale of mortgage loan collateral over the previous 12 months. The resulting estimated losses are reduced by the CEs the Bank expects to be eligible to receive. The CEs are contractually set and calculated by a master commitment agreement between the Bank and the PFI. Losses in excess of the CEs are incurred by the Bank.

Rollforward of Allowance for Credit Losses -Mortgage Loans - Conventional MPF.

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Balance, beginning of period	$	8,241		$	6,204		$	5,954		$	6,231
(Charge-offs) Recoveries, net (1)	(415		)	209			(406		)	(10		)
Provision (benefit) for credit losses	228			(72		)	2,506			120
Balance, June 30	$	8,054		$	6,341		$	8,054		$	6,341

Notes:

⁽¹⁾ Net charge-offs that the Bank does not expect to recover through CE receivable.

Allowances for Credit Losses and Recorded Investment by Impairment Methodology - Mortgage Loans - Conventional MPF.

(in thousands)	June 30, 2018		December 31, 2017
Ending balance, individually evaluated for impairment	$	6,867	$	5,218
Ending balance, collectively evaluated for impairment	1,187		736
Total allowance for credit losses	$	8,054	$	5,954
Recorded investment balance, end of period:
Individually evaluated for impairment, with or without a related allowance	$	49,437	$	52,505
Collectively evaluated for impairment	3,946,534		3,682,167
Total recorded investment	$	3,995,971	$	3,734,672

66

Notes to Unaudited Financial Statements (continued)

Credit Quality Indicators -Mortgage Loans.Key credit quality indicators include the migration of past due loans, nonaccrual loans, loans in process of foreclosure, and impaired loans.

(in thousands)	June 30, 2018
Recorded investment: (1)	Conventional MPF Loans			Government-Guaranteed or Insured Loans (2)			Total
Past due 30-59 days	$	33,816		$	8,911		$	42,727
Past due 60-89 days	6,935			1,638			8,573
Past due 90 days or more	12,580			3,831			16,411
Total past due loans	$	53,331		$	14,380		$	67,711
Total current loans	3,942,640			190,484			4,133,124
Total loans	$	3,995,971		$	204,864		$	4,200,835
Other delinquency statistics:
In process of foreclosures, included above (3)	$	6,452		$	1,143		$	7,595
Serious delinquency rate (4)	0.3		%	1.9		%	0.4		%
Past due 90 days or more still accruing interest	$	—		$	3,831		$	3,831
Loans on nonaccrual status	$	15,530		$	—		$	15,530

(in thousands)	December 31, 2017
Recorded investment: (1)	Conventional MPF Loans			Government-Guaranteed or Insured Loans (2)			Total
Past due 30-59 days	$	39,677		$	11,390		$	51,067
Past due 60-89 days	7,039			2,887			9,926
Past due 90 days or more	17,738			4,959			22,697
Total past due loans	$	64,454		$	19,236		$	83,690
Total current loans	3,670,218			195,382			3,865,600
Total loans	$	3,734,672		$	214,618		$	3,949,290
Other delinquency statistics:
In process of foreclosures, included above (3)	$	9,978		$	1,055		$	11,033
Serious delinquency rate (4)	0.5		%	2.3		%	0.6		%
Past due 90 days or more still accruing interest	$	—		$	4,959		$	4,959
Loans on nonaccrual status	$	20,695		$	—		$	20,695

Notes:

⁽¹⁾ The recorded investment in a loan is the unpaid principal balance, adjusted for charge-offs of estimated losses, accrued interest, net deferred loan fees or costs, unamortized premiums, unaccreted discounts and adjustments for hedging. The recorded investment is not net of any valuation allowance.

⁽²⁾ The Bank has not recorded any allowance for credit losses on government-guaranteed or -insured mortgage loans at June 30, 2018, and December 31, 2017.

⁽³⁾ 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 dependent on their delinquency status.

⁽⁴⁾ Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total loan portfolio class.

67

Notes to Unaudited Financial Statements (continued)

Individually Evaluated Impaired Loans -Mortgage Loans. Information regarding individually evaluated impaired loans is as follows. As indicated above, these loans include impaired loans considered collateral-dependent.

	June 30, 2018
(in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance for Credit Losses
With no related allowance:
Conventional MPF loans	$	30,001	$	29,657	$	—
With a related allowance:
Conventional MPF loans	19,436		19,158		6,867
Total:
Conventional MPF loans	$	49,437	$	48,815	$	6,867

	December 31, 2017
(in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance for Credit Losses
With no related allowance:
Conventional MPF loans	$	30,824	$	30,497	$	—
With a related allowance:
Conventional MPF loans	21,681		21,360		5,218
Total:
Conventional MPF loans	$	52,505	$	51,857	$	5,218

TDRs - Mortgage Loans - Conventional MPF. TDRs are considered to have occurred when a concession is granted to the debtor that would not have been considered had it not been for economic or legal reasons related to the debtor's financial difficulties. The Bank offers a loan modification program for its MPF Program. The loans modified under this program are considered TDRs. The Bank also considers a TDR to have occurred when a borrower files for Chapter 7 bankruptcy, the bankruptcy court discharges the borrower’s obligation, and the borrower does not reaffirm the debt.The recorded investment in mortgage loans classified as TDRs was $10.6 million and $11.1 million as of June 30, 2018 and December 31, 2017, respectively. The financial amounts related to TDRs are not material to the Bank’s financial condition, results of operations, or cash flows.

Real Estate Owned (REO). The Bank had $3.3 million and $3.9 million of REO reported in Other assets on the Statement of Condition at June 30, 2018 and December 31, 2017, respectively.

Purchases, Sales and Reclassifications. During the six months ended June 30, 2018 and 2017, there were no significant purchases or sales of financing receivables. Furthermore, none of the financing receivables were reclassified to held-for-sale.

68

Notes to Unaudited Financial Statements (continued)

Note 9 – 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 interest-bearing liabilities that finance these assets. 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 that include guidelines on the amount of exposure to interest rate changes it is willing to accept. In addition, the Bank monitors the risk to its interest income, net interest margin and average maturity of interest-earning assets and interest-bearing liabilities. For additional information on the Bank's derivative transactions, see Note 11 - Derivatives and Hedging Activities to the audited financial statements in the Bank's 2017 Form 10-K.

Derivative transactions may be executed either with a counterparty (referred to as uncleared derivatives) or cleared through a Futures Commission Merchant (i.e., clearing agent) with a Derivatives Clearing Organization (referred to as cleared derivatives). Once a derivative transaction has been accepted for clearing by a Derivative Clearing Organization (Clearing House), the executing counterparty is replaced with the Clearing House. The Bank is not a derivatives dealer and does not trade derivatives for short-term profit. The Bank transacts uncleared derivatives with large banks and major broker-dealers. Some of these banks and broker-dealers or their affiliates buy, sell, and distribute consolidated obligations.

Financial Statement Effect and Additional Financial Information. The following tables summarize the notional amount and fair value of derivative instruments and total derivatives 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.

	June 30, 2018
(in thousands)	Notional Amount of Derivatives		Derivative Assets		Derivative Liabilities
Derivatives designated as hedging instruments:
Interest rate swaps	$	35,917,784	$	2,323	$	72,707
Derivatives not designated as hedging instruments:
Interest rate swaps	$	10,497,743	$	12,906	$	32,184
Interest rate caps or floors	6,485,000		3,057		—
Mortgage delivery commitments	35,814		39		22
Total derivatives not designated as hedging instruments:	$	17,018,557	$	16,002	$	32,206
Total derivatives before netting and collateral adjustments	$	52,936,341	$	18,325	$	104,913
Netting adjustments and cash collateral (1)			97,208		(89,886		)
Derivative assets and derivative liabilities as reported on the Statement of   Condition			$	115,533	$	15,027

69

Notes to Unaudited Financial Statements (continued)

	December 31, 2017 (2)
(in thousands)	Notional Amount of Derivatives		Derivative Assets		Derivative Liabilities
Derivatives designated as hedging instruments:
Interest rate swaps	$	30,017,995	$	4,185	$	45,302
Derivatives not designated as hedging instruments:
Interest rate swaps	$	8,285,437	$	3,727	$	17,423
Interest rate caps	6,455,000		1,464		—
Mortgage delivery commitments	25,487		4		61
Total derivatives not designated as hedging instruments:	$	14,765,924	$	5,195	$	17,484
Total derivatives before netting and collateral adjustments	$	44,783,919	$	9,380	$	62,786
Netting adjustments and cash collateral (1)			71,376		(43,265		)
Derivative assets and derivative liabilities as reported on the Statement of   Condition			$	80,756	$	19,521

Note:

⁽¹⁾ Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions, cash collateral and related accrued interest held or placed with the same clearing agent and/or counterparties. Cash collateral posted and related accrued interest was $188.0 million and $114.6 million at June 30, 2018 and December 31, 2017, respectively. Cash collateral received was immaterial for both June 30, 2018 and December 31, 2017.

⁽²⁾ To conform with current presentation, $11.2 million of variation margin received from the Clearing House has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

The following table presents the components of net gains (losses) on derivatives and hedging activities as presented in the Statement of Income.

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Derivatives designated as hedging instruments:
Interest rate swaps (1)	$	(1,780	)	$	(455	)	$	(579	)	$	203
Derivatives not designated as hedging instruments:
Economic hedges:
Interest rate swaps	$	10,339		$	(848	)	$	16,136		$	4,340
Interest rate caps or floors	296			(2,069		)	1,273			(2,645		)
Net interest settlements	(3,576		)	(745		)	(6,159		)	(1,609		)
Mortgage delivery commitments	(444		)	(390		)	(1,336		)	(427		)
Other	4			4			12			10
Total net gains (losses) related to derivatives not designated as hedging instruments	$	6,619		$	(4,048	)	$	9,926		$	(331	)
Other - price alignment amount on derivatives for which variation margin is characterized as a daily settled contract	(780		)	208			(1,176		)	263
Net gains (losses) on derivatives and hedging activities	$	4,059		$	(4,295	)	$	8,171		$	135

Note:

⁽¹⁾Pertains to totalnet gains (losses) for fair value hedge ineffectiveness.

70

Notes to Unaudited Financial Statements (continued)

The following tables present, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships and the impact of those derivatives on the Bank’s net interest income for the three and six months ended June 30, 2018 and 2017.

(in thousands)	Gains/(Losses) on Derivative			Gains/(Losses) on Hedged Item			Net Fair Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Three months ended June 30, 2018
Hedged item type:
Advances	$	42,622		$	(42,410	)	$	212		$	10,648
Consolidated obligations – bonds	(6,685		)	3,961			(2,724		)	(23,524		)
AFS securities	13,243			(12,511		)	732			(908		)
Total	$	49,180		$	(50,960	)	$	(1,780	)	$	(13,784	)
Six months ended June 30, 2018
Hedged item type:
Advances	$	166,415		$	(165,953	)	$	462		$	7,839
Consolidated obligations – bonds	(96,457		)	92,864			(3,593		)	(31,307		)
AFS securities	53,895			(51,343		)	2,552			(3,592		)
Total	$	123,853		$	(124,432	)	$	(579	)	$	(27,060	)

(in thousands)	Gains/(Losses) on Derivative			Gains/(Losses) on Hedged Item			Net Fair Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Three months ended June 30, 2017
Hedged item type:
Advances	$	(20,918	)	$	20,815		$	(103	)	$	(7,989	)
Consolidated obligations – bonds	23,457			(23,001		)	456			2,478
AFS securities	(13,686		)	12,878			(808		)	(4,368		)
Total	$	(11,147	)	$	10,692		$	(455	)	$	(9,879	)
Six months ended June 30, 2017
Hedged item type:
Advances	$	(5,005	)	$	4,898		$	(107	)	$	(17,963	)
Consolidated obligations – bonds	12,306			(11,325		)	981			8,827
AFS securities	(7,411		)	6,740			(671		)	(9,273		)
Total	$	(110	)	$	313		$	203		$	(18,409	)

Note:

⁽¹⁾ Represents the net interest settlements on derivatives in fair value hedge relationships presented in the interest income/expense line item of the respective hedged item. These amounts do not include $(1.1) million and $(0.9) million for the second quarter of 2018 and 2017, respectively, and $(1.7) million and $(1.6) million for the six months endedJune 30, 2018 and 2017, respectively, of amortization/accretion of the basis adjustment related to discontinued fair value hedging relationships.

The Bank had no active cash flow hedging relationships during the first six months of 2018 or 2017.

Managing Credit Risk on Derivatives. The Bank is subject to credit risk due to the risk of nonperformance by counterparties to its derivative transactions. The Bank manages counterparty credit risk through credit analysis, collateral requirements, and adherence to the requirements set forth in its policies, U.S. Commodity Futures Trading Commission regulations, and Finance Agency regulations.

Uncleared Derivatives. For uncleared derivatives, the degree of credit risk depends on the extent to which netting arrangements are included in such contracts to mitigate the risk. The Bank requires collateral agreements with collateral delivery thresholds on all uncleared derivatives.

71

Notes to Unaudited Financial Statements (continued)

Generally, the Bank is subject to certain ISDA agreements for uncleared derivatives that require the Bank to post additional collateral with its counterparties if there is deterioration in the Bank's credit rating and the net liability position exceeds the relevant threshold. If the Bank’s credit rating were to be lowered by a major credit rating agency, the Bank would 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 that require the Bank to deliver additional collateral due to a credit downgrade and were in a net liability position (before cash collateral and related accrued interest) at June 30, 2018 was $11.0 million for which the Bank has posted cash collateral of $2.7 million. If the Bank’s credit rating had been lowered one notch (i.e., from its current rating to the next lower rating), the Bank would have been required to deliver up to an additional $6.7 million of collateral to its derivative counterparties at June 30, 2018.

Cleared Derivatives. For cleared derivatives, Derivative Clearing Organizations (Clearing Houses) are the Bank's counterparties. The Clearing House notifies the clearing agent of the required initial and variation margin. The requirement that the Bank post initial margin and exchange variation margin settlement payments through the clearing agent, which notifies the Bank on behalf of the Clearing Houses, exposes the Bank to institutional credit risk in the event that the clearing agent or the Clearing Houses fail to meet their respective obligations. The use of cleared derivatives is intended to mitigate credit risk exposure through the use of a central counterparty instead of individual counterparties. Collateral postings and variation margin settlement payments are made daily, through a clearing agent, for changes in the value of cleared derivatives. Initial margin is the amount calculated based on anticipated exposure to future changes in the value of a swap and protects the Clearing Houses from market risk in the event of default by one of their respective clearing agents. Variation margin is paid daily to settle the exposure arising from changes in the market value of the position. The Bank uses CME Clearing as the Clearing House for all cleared derivative transactions. Variation margin payments are characterized as daily settlement payments, rather than collateral. Initial margin is considered cash collateral.

Based on credit analyses and collateral requirements, the Bank does not anticipate credit losses related to its derivative agreements. See Note 13 - Estimated Fair Values for discussion regarding the Bank's fair value methodology for derivative assets and liabilities, including an evaluation of the potential for the fair value of these instruments to be affected by counterparty credit risk.

For cleared derivatives, the Clearing House 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 by its clearing agents to post additional initial margin at June 30, 2018.

Offsetting of Derivative Assets and Derivative Liabilities. When it has met the netting requirements, theBank presents derivative instruments, related cash collateral received or pledged, and associated accrued interest on a net basis by clearing agent and/or by counterparty. The Bank has analyzed the enforceability of offsetting rights incorporated in its cleared derivative transactions and 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 Clearing Houses or the Bank’s clearing agent, or both. Based on this analysis, the Bank nets derivative fair values on all of its transactions through a particular clearing agent with a particular Clearing House (including settled variation margin) into one net asset or net liability exposure.  Initial margin posted to the clearing house is presented as a derivative asset.

72

Notes to Unaudited Financial Statements (continued)

The following tables present separately the fair value of derivative instruments meeting or not meeting netting requirements. Gross recognized amounts do not include the related collateral received from or pledged to counterparties. Net amounts reflect the adjustments of collateral received from or pledged to counterparties.

	Derivative Assets
(in thousands)	June 30, 2018			December 31, 2017 (2)
Derivative instruments meeting netting requirements:
Gross recognized amount:
Uncleared derivatives	$	17,489		$	5,875
Cleared derivatives	797			3,501
Total gross recognized amount	18,286			9,376
Gross amounts of netting adjustments and cash collateral
Uncleared derivatives	(14,575		)	(5,246		)
Cleared derivatives	111,783			76,622
Total gross amounts of netting adjustments and cash collateral	97,208			71,376
Net amounts after netting adjustments and cash collateral
Uncleared derivatives	2,914			629
Cleared derivatives	112,580			80,123
Total net amounts after netting adjustments and cash collateral	115,494			80,752
Derivative instruments not meeting netting requirements: (1)
Uncleared derivatives	39			4
Cleared derivatives	—			—
Total derivative instruments not meeting netting requirements:	39			4
Total derivative assets:
Uncleared derivatives	2,953			633
Cleared derivatives	112,580			80,123
Total derivative assets as reported in the Statement of Condition	115,533			80,756
Net unsecured amount:
Uncleared derivatives	2,953			633
Cleared derivatives	112,580			80,123
Total net unsecured amount	$	115,533		$	80,756

73

Notes to Unaudited Financial Statements (continued)

	Derivative Liabilities
(in thousands)	June 30, 2018			December 31, 2017 (2)
Derivative instruments meeting netting requirements:
Gross recognized amount:
Uncleared derivatives	$	99,472		$	47,315
Cleared derivatives	5,419			15,409
Total gross recognized amount	104,891			62,724
Gross amounts of netting adjustments and cash collateral
Uncleared derivatives	(89,089		)	(39,063		)
Cleared derivatives	(797		)	(4,202		)
Total gross amounts of netting adjustments and cash collateral	(89,886		)	(43,265		)
Net amounts after netting adjustments and cash collateral
Uncleared derivatives	10,383			8,252
Cleared derivatives	4,622			11,207
Total net amounts after netting adjustments and cash collateral	15,005			19,459
Derivative instruments not meeting netting requirements: (1)
Uncleared derivatives	22			62
Cleared derivatives	—			—
Total derivative instruments not meeting netting requirements:	22			62
Total derivative liabilities
Uncleared derivatives	10,405			8,314
Cleared derivatives	4,622			11,207
Total derivative liabilities as reported in the Statement of Condition	15,027			19,521
Net unsecured amount:
Uncleared derivatives	10,405			8,314
Cleared derivatives	4,622			11,207
Total net unsecured amount	$	15,027		$	19,521

Note:

⁽¹⁾ Represents derivatives that are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments).

⁽²⁾ To conform with current presentation, $11.2 million of variation margin received from the Clearing House for daily settled contracts has been allocated to the individual instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

74

Notes to Unaudited Financial Statements (continued)

Note 10 – Consolidated Obligations

Consolidated obligations consist of consolidated bonds and consolidated discount notes.The FHLBanks issue consolidated obligations through the OF as their agent. In connection with each debt issuance, each FHLBank specifies the amount of debt it wants to have issued on its behalf. The Bank records as a liability its specific portion of consolidated obligations for which it is the primary obligor.

Although the Bank is primarily liable for its portion of consolidated obligations, the Bank is also jointly and severally liable with the other ten FHLBanks for the payment of principal and interest on all consolidated obligations of each of the FHLBanks. The Finance Agency, at its discretion, may require any FHLBank to make principal or interest payments due on any consolidated obligations whether or not the consolidated obligation represents a primary liability of such FHLBank.

Although an FHLBank has never paid the principal or interest payments due on a consolidated obligation on behalf of another FHLBank, if one FHLBank is required to make such payments, Finance Agency regulations provide that the paying FHLBank is entitled to reimbursement from the non-complying FHLBank for any payments made on its behalf and other associated costs including interest to be determined by the Finance Agency. If the Finance Agency determines that the non-complying FHLBank is unable to satisfy its repayment obligations, then the Finance Agency may allocate the outstanding liabilities of the non-complying FHLBank among the remaining FHLBanks on a pro rata basis in proportion to each FHLBank’s participation in all consolidated obligations outstanding. However, the Finance Agency reserves the right to allocate the outstanding liabilities for the consolidated obligations among the FHLBanks in any other manner it may determine to ensure that the FHLBanks operate in a safe and sound manner. The par amounts of the FHLBanks’ outstanding consolidated obligations were$1,059.9 billionand$1,034.3 billion atJune 30, 2018andDecember 31, 2017, respectively.

Additional detailed information regarding consolidated obligations including general terms and interest rate payment terms can be found in Note 14 to the audited financial statements in the Bank's 2017 Form 10-K.

The following table details interest rate payment terms for the Bank's consolidated obligation bonds as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018			December 31, 2017
Par value of consolidated bonds:
Fixed-rate	$	27,184,715		$	26,714,743
Step-up	1,850,000			1,675,000
Floating-rate	39,432,850			28,837,500
Conversion bonds - fixed to floating	390,000			390,000
Total par value	68,857,565			57,617,243
Bond premiums	67,714			65,198
Bond discounts	(9,144		)	(7,927		)
Concession fees	(6,971		)	(6,417		)
Hedging adjustments	(227,297		)	(134,375		)
Total book value	$	68,681,867		$	57,533,722

75

Notes to Unaudited Financial Statements (continued)

Maturity Terms. The following table presents a summary of the Bank’s consolidated obligation bonds outstanding by year of contractual maturity as of June 30, 2018 and December 31, 2017.

	June 30, 2018				December 31, 2017
(dollars in thousands) Year of Contractual Maturity	Amount		Weighted Average Interest Rate		Amount		Weighted Average Interest Rate
Due in 1 year or less	$	42,085,735	1.87	%	$	28,357,115	1.33	%
Due after 1 year through 2 years	14,755,600		1.89		17,184,710		1.44
Due after 2 years through 3 years	3,647,270		1.98		4,062,040		1.78
Due after 3 years through 4 years	2,400,795		2.27		2,357,115		2.11
Due after 4 years through 5 years	1,820,315		2.43		1,701,520		2.12
Thereafter	4,147,850		2.59		3,937,150		2.41
Index amortizing notes	—		—		17,593		5.39
Total par value	$	68,857,565	1.95	%	$	57,617,243	1.53	%

The following table presents the Bank’s consolidated obligation bonds outstanding between noncallable and callable as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Noncallable	$	62,535,565	$	52,328,243
Callable	6,322,000		5,289,000
Total par value	$	68,857,565	$	57,617,243

The following table presents consolidated obligation bonds outstanding by the earlier of contractual maturity or next call date as of June 30, 2018 and December 31, 2017.

(in thousands) Year of Contractual Maturity or Next Call Date	June 30, 2018		December 31, 2017
Due in 1 year or less	$	48,222,735	$	33,384,115
Due after 1 year through 2 years	14,040,600		17,061,710
Due after 2 years through 3 years	2,915,270		3,587,040
Due after 3 years through 4 years	1,692,795		1,477,115
Due after 4 years through 5 years	1,112,315		1,236,520
Thereafter	873,850		853,150
Index amortizing notes	—		17,593
Total par value	$	68,857,565	$	57,617,243

Consolidated Obligation Discount Notes. Consolidated obligation discount notes are issued to raise short-term funds. Discount notes are consolidated obligations with original maturities up to one year. These notes are issued at less than their face amount and redeemed at par value when they mature. The following table details the Bank’s consolidated obligation discount notes as of June 30, 2018 and December 31, 2017.

(dollars in thousands)	June 30, 2018			December 31, 2017
Book value	$	26,988,892		$	36,193,289
Par value	27,060,905			36,253,187
Weighted average interest rate (1)	1.89		%	1.24		%

Note:

⁽¹⁾ Represents an implied rate.

76

Notes to Unaudited Financial Statements (continued)

Note 11 – Capital

The Bank is subject to three capital requirements under its current Capital Plan Structure and the Finance Agency rules and regulations: (1) risk-based capital; (2) total regulatory capital; and (3) leverage capital. Regulatory capital does not include AOCI, but does include mandatorily redeemable capital stock. See details regarding these requirements and the Bank’s Capital Plan in Note 16 to the audited financial statements in the Bank’s 2017 Form 10-K. At June 30, 2018, the Bank was in compliance with all regulatory capital requirements.

The Bank has two subclasses of capital stock: B1 membership stock and B2 activity stock. The Bank had $0.4 billion and $3.6 billion in B1 membership stock and B2 activity stock, respectively, at June 30, 2018. The Bank had $0.4 billion and $3.3 billion in B1 membership stock and B2 activity stock, respectively, at December 31, 2017.

The following table demonstrates the Bank’s compliance with the regulatory capital requirements at June 30, 2018 and December 31, 2017.

	June 30, 2018						December 31, 2017
(dollars in thousands)	Required			Actual			Required			Actual
Regulatory capital requirements:
RBC	$	1,350,377		$	5,170,681		$	1,052,052		$	4,821,638
Total capital-to-asset ratio	4.0		%	5.1		%	4.0		%	4.8		%
Total regulatory capital	4,072,573			5,170,681			3,986,520			4,821,638
Leverage ratio	5.0		%	7.6		%	5.0		%	7.3		%
Leverage capital	5,090,716			7,756,021			4,983,150			7,232,457

When the Finance Agency implemented the prompt corrective action provisions of the Housing and Economic Recovery Act of 2008 (Housing Act), it established four capital classifications for the FHLBanks: adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized. On June 7, 2018, the Bank received final notification from the Finance Agency that it was considered "adequately capitalized" for the quarter ended March 31, 2018. As of the date of this filing, the Bank has not received final notice from the Finance Agency regarding its capital classification for the quarter ended June 30, 2018.

Capital Concentrations. The following tables present member holdings of 10% or more of the Bank’s total capital stock, including mandatorily redeemable capital stock, outstanding as of June 30, 2018 and December 31, 2017.

(dollars in thousands)	June 30, 2018
Member (1)	Capital Stock		% of Total
PNC Bank, N.A., Pittsburgh, PA	$	1,108,150	28.0	%
Ally Bank, Midvale, UT	789,532		20.0
Chase Bank USA, N.A., Wilmington, DE	505,029		12.8

(dollars in thousands)	December 31, 2017
Member (1)	Capital Stock		% of Total
PNC Bank, N.A., Pittsburgh, PA	$	910,400	24.8	%
Ally Bank, Midvale, UT	745,387		20.3
Chase Bank USA, N.A., Wilmington, DE	589,254		16.1

Note:

⁽¹⁾ For Bank membership purposes, the principal place of business for PNC Bank is Pittsburgh, PA. For Ally Bank, the principal place of business is Horsham, PA.

Mandatorily Redeemable Capital Stock. The Bank is a cooperative whose member financial institutions and former members own all of the relevant Bank's issued and outstanding capital stock. Shares cannot be purchased or sold except between the Bank and its members at the shares' par value of $100, as mandated by the Bank's capital plan.

At June 30, 2018 and December 31, 2017, the Bank had $4.5 million and $5.1 million, respectively, in capital stock subject to mandatory redemption with payment subject to a five-year waiting period and the Bank meeting its minimum regulatory

77

Notes to Unaudited Financial Statements (continued)

capital requirements. Estimated dividends on mandatorily redeemable capital stock recorded as interest expense were immaterial during the three and six months ended June 30, 2018 and 2017.

The following table provides the related dollar amounts for activities recorded in mandatorily redeemable capital stock during the six months ended June 30, 2018 and 2017.

	Six months ended June 30,
(in thousands)	2018			2017
Balance, beginning of the period	$	5,113		$	5,216
Capital stock subject to mandatory redemption reclassified from capital	17			269
Redemption/repurchase of mandatorily redeemable stock	(600		)	(466		)
Balance, end of the period	$	4,530		$	5,019

As of June 30, 2018, the total mandatorily redeemable capital stock reflected the balance for five institutions. Four institutions were merged out of district and are considered to be non-members. One other institution has notified the Bank of its intention to voluntarily redeem its capital stock and withdraw from membership. This institution will continue to be a member of the Bank until the withdrawal period is completed.

The following table shows the amount of mandatorily redeemable capital stock by contractual year of redemption at June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Due in 1 year or less	$	326	$	—
Due after 1 year through 2 years	—		342
Due after 2 years through 3 years	3,982		4,256
Due after 3 years through 4 years	—		—
Due after 4 years through 5 years	222		515
Total	$	4,530	$	5,113

Under the terms of the Bank’s Capital Plan, membership capital stock is redeemable five years from the date of membership termination or withdrawal notice from the member. If the membership is terminated due to a merger or consolidation, the membership capital stock is deemed to be excess stock and is repurchased. The activity capital stock (i.e., supporting advances, letters of credit and MPF) relating to termination, withdrawal, mergers or consolidation is recalculated based on the underlying activity. Any excess activity capital stock is repurchased on an ongoing basis as part of the Bank’s excess stock repurchase program that is in effect at the time. Therefore, the redemption period could be less than five years if the stock becomes excess stock. However, the redemption period could extend beyond five years if the underlying activity is still outstanding.

Dividends and Retained Earnings. Each FHLBank is required to contribute 20% of its net income each quarter to a restricted retained earnings (RRE) account until the balance of that account equals at least 1% of that FHLBank's average balance of outstanding consolidated obligations for the previous quarter. These RRE will not be available to pay dividends. At June 30, 2018, retained earnings were $1,215.7 million, including $899.1 million of unrestricted retained earnings and $316.6 million of RRE.

The Finance Agency has issued regulatory guidance to the FHLBanks relating to capital management and retained earnings. The guidance directs each FHLBank to assess, at least annually, the adequacy of its retained earnings with consideration given to future possible financial and economic scenarios. The guidance also outlines the considerations that each FHLBank should undertake in assessing the adequacy of the Bank’s retained earnings. The Bank’s retained earnings policy and capital adequacy metric utilize this guidance.

78

Notes to Unaudited Financial Statements (continued)

Dividends paid by the Bank are subject to Board approval and may be paid in either capital stock or cash; historically, the Bank has paid cash dividends only. Dividends are based on stockholders' average balances for the previous quarter. Dividends paid through the first and second quarters of 2018 and 2017 are presented in the table below.

	Dividend - Annual Yield
	2018		2017
	Membership	Activity	Membership	Activity
February	3.5%	6.75%	2.0%	5.0%
April	3.5%	6.75%	2.0%	5.0%

In July 2018, the Bank paid a quarterly dividend equal to an annual yield of 6.75% and 3.5% on activity and membership stock, respectively.

The following table summarizes the changes in AOCI for the three months ended June 30, 2018 and 2017.

(in thousands)	Net Unrealized Gains(Losses) on AFS		Non-credit OTTI Gains(Losses) on AFS			Non-credit OTTI Gains(Losses) on HTM		Net Unrealized Gains (Losses) on Hedging Activities			Pension and Post-Retirement Plans			Total
March 31, 2017	$	18,540	$	65,801		$	—	$	216		$	(2,430	)	$	82,127
Other comprehensive income (loss) before reclassification:
Net unrealized gains	31,654		8,766			—		—			—			40,420
Net change in fair value of OTTI securities	—		(437		)	—		—			—			(437		)
Reclassifications from OCI to net income:
Amortization on hedging activities	—		—			—		(4		)	—			(4		)
Pension and post-retirement	—		—			—		—			86			86
June 30, 2017	$	50,194	$	74,130		$	—	$	212		$	(2,344	)	$	122,192
March 31, 2018	$	26,595	$	73,128		$	—	$	192		$	(3,279	)	$	96,636
Other comprehensive income (loss) before reclassification:
Net unrealized gains	714		3,149			—		—			—			3,863
Reclassifications from OCI to net income:
Non-credit OTTI to credit OTTI	—		80			—		—			—			80
Amortization on hedging activities	—		—			—		(4		)	—			(4		)
Pension and post-retirement	—		—			—		—			176			176
June 30, 2018	$	27,309	$	76,357		$	—	$	188		$	(3,103	)	$	100,751

79

Notes to Unaudited Financial Statements (continued)

The following table summarizes the changes in AOCI for the six months ended June 30, 2018 and 2017.

(in thousands)	Net Unrealized Gains(Losses) on AFS			Non-credit OTTI Gains(Losses) on AFS			Non-credit OTTI Gains(Losses) on HTM		Net Unrealized Gains (Losses) on Hedging Activities			Pension and Post-Retirement Plans			Total
December 31, 2016	$	(12,835	)	$	67,424		$	—	$	223		$	(2,516	)	$	52,296
Other comprehensive income (loss) before reclassification:
Net unrealized gains (losses)	63,029			7,680			—		—			—			70,709
Net change in fair value of OTTI securities	—			(1,638		)	—		—			—			(1,638		)
Reclassifications from OCI to net income:
Noncredit OTTI to credit OTTI	—			664			—		—			—			664
Amortization on hedging activities	—			—			—		(11		)	—			(11		)
Pension and post-retirement	—			—			—		—			172			172
June 30, 2017	$	50,194		$	74,130		$	—	$	212		$	(2,344	)	$	122,192
December 31, 2017	$	41,210		$	72,953		$	—	$	200		$	(3,399	)	$	110,964
Other comprehensive income (loss) before reclassification:
Net unrealized gains (losses)	(13,901		)	3,062			—		—			—			(10,839		)
Reclassifications from OCI to net income:
Noncredit OTTI to credit OTTI	—			342			—		—			—			342
Amortization on hedging activities	—			—			—		(12		)	—			(12		)
Pension and post-retirement	—			—			—		—			296			296
June 30, 2018	$	27,309		$	76,357		$	—	$	188		$	(3,103	)	$	100,751

80

Notes to Unaudited Financial Statements (continued)

Note 12 – Transactions with Related Parties

The following table includes significant outstanding related party member-activity balances.

(in thousands)	June 30, 2018		December 31, 2017
Advances	$	55,156,375	$	56,819,556
Letters of credit (1)	4,372,957		4,612,680
MPF loans	622,014		696,204
Deposits	17,580		32,420
Capital stock	2,581,823		2,470,117

Note:

⁽¹⁾ Letters of credit are off-balance sheet commitments.

The following table summarizes the effects on the Statement of Income corresponding to the related party member balances above. Amounts related to prepayment of fess on advances and interest expense on deposits were immaterial for the periods presented.

	Three months ended June 30,				Six months ended June 30,
(in thousands)	2018		2017		2018		2017
Interest income on advances (1)	$	308,657	$	166,669	$	552,449	$	326,594
Interest income on MPF loans	8,542		10,386		17,485		21,568
Letters of credit fees	1,379		1,674		2,951		3,536

Note:

⁽¹⁾ For the three and six months ended June 30, 2018, balances include contractual interest income of $299.7 million and $545.1 million, net interest settlements on derivatives in fair value hedge relationships of $8.9 million and $7.2 million and total amortization of basis adjustments was immaterial and $0.1 million. For the three and six months ended June 30, 2017, balances include contractual interest income of $170.8 million and $334.6 million, net interest settlements on derivatives in fair value hedge relationships of $(4.2) million and $(9.4) million and total amortization of basis adjustments was $0.1 million and $1.4 million.

The following table includes the MPF activity of the related party members.

	Three months ended June 30,				Six months ended June 30,
(in thousands)	2018		2017		2018		2017
Total MPF loan volume purchased	$	1,569	$	6,501	$	5,438	$	10,031

The following table summarizes the effect of the MPF activities with FHLBank of Chicago.

	Three months ended June 30,				Six months ended June 30,
(in thousands)	2018		2017		2018		2017
Servicing fee expense	$	747	$	747	$	1,458	$	1,176

(in thousands)	June 30, 2018		December 31, 2017
Interest-bearing deposits maintained with FHLBank of Chicago	$	5,888	$	5,340

From time to time, the Bank may borrow from or lend to other FHLBanks on a short-term uncollateralized basis. During the six months ended June 30, 2018, there was no borrowing or lending activity between the Bank and other FHLBanks. During the six months ended June 30, 2017, the total amount borrowed from and repaid to other FHLBanks was $400.0 million.

Subject to mutually agreed upon terms, on occasion, an FHLBank may transfer at fair value its primary debt obligations to another FHLBank, which becomes the primary obligor on the transferred debt upon completion of the transfer. During the six months ended June 30, 2018 and 2017, there were no transfers of debt between the Bank and another FHLBank.

81

Notes to Unaudited Financial Statements (continued)

From time to time, a member of one FHLBank may be acquired by a member of another FHLBank. When such an acquisition occurs, the two FHLBanks may agree to transfer at fair value the loans of the acquired member to the FHLBank of the surviving member. The FHLBanks may also agree to the purchase and sale of any related hedging instrument. The Bank had no such activity during the six months ended June 30, 2018 and 2017.

Additional discussions regarding related party transactions can be found in Note 18 to the audited financial statements in the Bank's 2017 Form 10-K.

Note 13 – Estimated Fair Values

Fair value amounts have been determined by the Bank using available market information and 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., an exit price). These estimates are based on recent market data and other pertinent information available to the Bank at June 30, 2018 and December 31, 2017. Although the management of the Bank believes that the valuation methods are appropriate and provide a reasonable determination of the fair value of these financial instruments, there are inherent limitations in any valuation technique. Therefore, these fair values are not necessarily equal to the amounts that would be realized in current market transactions, although they do reflect the Bank’s judgment of how a market participant would estimate the fair values.

The carrying value and estimated fair value of the Bank’s financial instruments at June 30, 2018 and December 31, 2017 are presented in the table below.

Fair Value Summary Table
	June 30, 2018
(in thousands)	Carrying Value		Level 1		Level 2		Level 3		Netting Adjustments and Cash Collateral (1)			Estimated Fair Value
Assets:
Cash and due from banks	$	161,924	$	161,924	$	—	$	—	$	—		$	161,924
Interest-bearing deposits	620,888		615,000		5,888		—		—			620,888
Federal funds sold	5,975,000		—		5,974,931		—		—			5,974,931
Securities purchased under agreement to resell (2)	1,500,000		—		1,499,981		—		—			1,499,981
Trading securities	535,095		—		535,095		—		—			535,095
AFS securities	8,318,998		—		7,843,285		475,713		—			8,318,998
HTM securities	3,802,405		—		3,560,033		242,226		—			3,802,259
Advances	76,340,011		—		76,318,912		—		—			76,318,912
Mortgage loans held for portfolio, net	4,171,476		—		4,076,595		—		—			4,076,595
BOB loans, net	16,214		—		—		16,214		—			16,214
Accrued interest receivable	209,555		—		209,555		—		—			209,555
Derivative assets	115,533		—		18,325		—		97,208			115,533
Liabilities:
Deposits	$	551,092	$	—	$	551,092	$	—	$	—		$	551,092
Discount notes	26,988,892		—		26,985,801		—		—			26,985,801
Bonds	68,681,867		—		68,441,441		—		—			68,441,441
Mandatorily redeemable capital stock (3)	4,530		4,607		—		—		—			4,607
Accrued interest payable (3)	170,415		—		170,338		—		—			170,338
Derivative liabilities	15,027		—		104,913		—		(89,886		)	15,027

82

Notes to Unaudited Financial Statements (continued)

	December 31, 2017
(in thousands)	Carrying Value		Level 1		Level 2		Level 3		Netting Adjustments and Cash Collateral (1)			Estimated Fair Value
Assets:
Cash and due from banks	$	3,414,992	$	3,414,992	$	—	$	—	$	—		$	3,414,992
Interest-bearing deposits	280,340		275,000		5,340		—		—			280,340
Federal funds sold	5,650,000		—		5,649,868		—		—			5,649,868
Securities purchased under agreement to resell (2)	500,000		—		499,999		—		—			499,999
Trading securities	399,296		9,657		389,639		—		—			399,296
AFS securities	9,044,387		2,015		8,517,829		524,543		—			9,044,387
HTM securities	1,883,051		—		1,611,151		283,383		—			1,894,534
Advances	74,279,798		—		74,242,369		—		—			74,242,369
Mortgage loans held for portfolio, net	3,923,123		—		3,921,976		—		—			3,921,976
BOB loans, net	14,083		—		—		14,083		—			14,083
Accrued interest receivable	164,459		—		164,459		—		—			164,459
Derivative assets (4)	80,756		—		9,380		—		71,376			80,756
Liabilities:
Deposits	$	538,076	$	—	$	538,076	$	—	$	—		$	538,076
Discount notes	36,193,289		—		36,185,419		—		—			36,185,419
Bonds	57,533,722		—		57,439,681		—		—			57,439,681
Mandatorily redeemable capital stock (3)	5,113		5,201		—		—		—			5,201
Accrued interest payable (3)	118,473		—		118,384		—		—			118,384
Derivative liabilities (4)	19,521		—		62,786		—		(43,265		)	19,521

Notes:

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

⁽²⁾ Based on the fair value of the related collateral held, the securities purchased under agreements to resell were fully collateralized for the periods presented. There were no offsetting liabilities related to these securities at June 30, 2018 and December 31, 2017. These instruments’ maturity term is overnight.

⁽³⁾ The estimated fair value amount for the mandatorily redeemable capital stock line item includes accrued dividend interest; this amount is excluded from the estimated fair value for the accrued interest payable line item.

⁽⁴⁾ To conform with current presentation, $11.2 million in variation margin received on cleared derivatives 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 Hierarchy. The fair value hierarchy is used to prioritize the inputs used to measure fair value by maximizing the use of observable inputs. The inputs are evaluated and an overall level for the fair value measurement is determined. This overall level is an indication of the 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 reporting entity 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: (1) quoted prices for similar assets or liabilities in active markets; (2) quoted prices for identical or similar assets or liabilities in markets that are not active or in which little information is released publicly; (3) 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 (4) inputs that are derived principally from or corroborated by observable market data by correlation or other means.

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

83

Notes to Unaudited Financial Statements (continued)

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.

Summary of Valuation Methodologies and Primary Inputs

The valuation methodologies 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 nonrecurring basis in the Statement of Condition are listed below.

Investment Securities – non-MBS. The Bank uses either the income or market approach to determine the estimated fair value of non-MBS investment securities.

For instruments that use the income approach, the significant inputs include a market-observable interest rate curve and a discount spread, if applicable. The market-observable interest rate curves and the related instrument types are as follows:

•Treasury curve: U.S. Treasury obligations

•LIBOR Swap curve: certificates of deposit

•CO curve: GSE and other U.S. obligations

The Bank uses a market approach for its state and local agency bonds. The Bank obtains prices from multiple designated third-party vendors when available, and the default price is the average of the prices obtained. Otherwise, the approach is generally consistent with the approach outlined below for Investment Securities - MBS.

Investment Securities – MBS.  To value MBS holdings, the Bank obtains prices from multiple third-party pricing vendors, when available. The pricing vendors use various proprietary models to price MBS. The inputs to those models are derived from various sources including, but not limited to: benchmark yields, reported trades, dealer estimates, issuer spreads, benchmark securities, bids, offers and other market-related data. Since many MBS do not trade on a daily basis, the pricing vendors use available information such as benchmark curves, benchmarking of like securities, sector groupings and matrix pricing to determine the prices for individual securities, as applicable. Each pricing vendor has an established challenge process in place for all MBS valuations, which facilitates resolution of potentially erroneous prices identified by the Bank.

During the year, the Bank conducts reviews of its pricing vendors to enhance its understanding of the vendors' pricing processes, methodologies and control procedures. To the extent available, the Bank also reviews the vendors' independent auditors' reports regarding the internal controls over their valuation processes.

The Bank's valuation technique 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. 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. If, on the other hand, 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. If all prices received for a security are outside the tolerance threshold level of the median price, then there is no default price, and the final price is determined by an evaluation of all outlier prices as described above.

As of June 30, 2018, for substantially all of its MBS, the Bank received a price from all of its vendors and for all but one security, the default price was the final price. For this security, an analysis was conducted and the Bank concluded that the outlier price was the best estimate of fair value. In addition, there were minimal outliers to evaluate. Based on the Bank's reviews of the pricing methods including inputs and controls employed by the third-party pricing vendors and the relative lack of dispersion among the vendor prices (or, in those instances in which there were outliers or significant yield variances, the Bank's additional analyses), the Bank believes the 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. There continues to be unobservable inputs and a lack of significant market activity for private label MBS; therefore, as of June 30, 2018, the Bank classified private label MBS as Level 3.

84

Notes to Unaudited Financial Statements (continued)

Derivative Assets/Liabilities. The Bank bases the fair values of derivatives with similar terms on market prices, when available. However, market prices do not exist for many types of derivative instruments. Consequently, fair values for these instruments are estimated using standard valuation techniques such as discounted cash flow analysis and comparisons to similar instruments. Estimates developed using these methods are highly subjective and require judgment regarding significant matters such as the amount and timing of future cash flows, volatility of interest rates and the selection of discount rates that appropriately reflect market and credit risks. In addition, the fair value estimates for these instruments include accrued interest receivable/payable which approximate their carrying values due to their short-term nature.

The discounted cash flow analysis used to determine the net present value of derivative instruments utilizes market-observable inputs (inputs that are actively quoted and can be validated to external sources). Inputs by class of derivative are as follows:

Interest-rate related:

• Discount rate assumption. Overnight Index Swap (OIS) curve through contractual term.

• Forward interest rate assumption. LIBOR Swap curve or OIS curve through contractual term.

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

Mortgage delivery commitments:

• To Be Announced (TBA) securities prices. Market-based prices of TBAs are determined by coupon class and expected term until settlement and a pricing adjustment reflective of the secondary mortgage market.

The Bank is subject to credit risk on uncleared derivatives transactions due to the potential nonperformance by the derivatives counterparties. To mitigate this risk, the Bank has entered into netting arrangements and security agreements that provide for delivery of collateral at specified levels. As a result, uncleared derivatives are recognized as collateralized-to-market and the fair value of uncleared derivatives excludes netting adjustments and collateral. The Bank has evaluated the potential for fair value adjustment due to uncleared counterparty credit risk and has concluded that no adjustments are necessary.

The Bank's credit risk exposure on cleared derivatives is mitigated by the substitution of a central counterparty for individual counterparties. In addition, the CME Clearing rulebook requires delivery of initial margin to offset future changes in value and daily delivery of variation margin to offset changes in market value. Variation margin payments are daily settlement payments rather than collateral. Initial margin continues to be treated as collateral and accounted for separately.

The fair values of derivatives are netted by clearing agent and/or by counterparty pursuant to the provisions of each of the Bank’s netting agreements. If these netted amounts are positive, they are classified as an asset and, if negative, as a liability.

Impaired Mortgage Loans Held for Portfolio and Real Estate Owned. The estimated fair values of impaired mortgage loans held for portfolio and real estate owned are determined based on values provided by a third party's retail-based AVM. The Bank adjusts the AVM value based on the amount it has historically received on liquidation.

Subjectivity of Estimates. Estimates of the fair value of financial assets and liabilities using the methods described above 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. These estimates are susceptible to material near term changes because they are made as of a specific point in time.

85

Notes to Unaudited Financial Statements (continued)

Fair Value Measurements. The following tables present, for each hierarchy level, the Bank’s assets and liabilities that are measured at fair value on a recurring or non-recurring basis on its Statement of Condition at June 30, 2018 and December 31, 2017. The Bank measures certain mortgage loans held for portfolio at fair value when a charge-off is recognized and subsequently when the fair value less costs to sell is lower than the carrying amount. Real estate owned is measured using fair value when the assets' fair value less costs to sell is lower than the carrying amount.

	June 30, 2018
(in thousands)	Level 1		Level 2		Level 3		Netting Adjustment and Cash Collateral(1)			Total
Recurring fair value measurements - Assets
Trading securities:
Non MBS:
U.S. Treasury obligations	$	—	$	97,972	$	—	$	—		$	97,972
GSE and TVA obligations	—		437,123		—		—			437,123
Total trading securities	$	—	$	535,095	$	—	$	—		$	535,095
AFS securities:
Non MBS:
GSE and TVA obligations	$	—	$	2,427,065	$	—	$	—		$	2,427,065
State or local agency obligations	—		260,972		—		—			260,972
MBS:
U.S. obligations single family MBS	—		165,728		—		—			165,728
GSE single-family MBS	—		2,521,069		—		—			2,521,069
GSE multifamily MBS	—		2,468,451		—		—			2,468,451
Private label residential MBS	—		—		475,713		—			475,713
Total AFS securities	$	—	$	7,843,285	$	475,713	$	—		$	8,318,998
Derivative assets:
Interest rate related	$	—	$	18,286	$	—	$	97,208		$	115,494
Mortgage delivery commitments	—		39		—		—			39
Total derivative assets	$	—	$	18,325	$	—	$	97,208		$	115,533
Total recurring assets at fair value	$	—	$	8,396,705	$	475,713	$	97,208		$	8,969,626
Recurring fair value measurements - Liabilities
Derivative liabilities:
Interest rate related	$	—	$	104,891	$	—	$	(89,886	)	$	15,005
Mortgage delivery commitments	—		22		—		—			22
Total recurring liabilities at fair value (3)	$	—	$	104,913	$	—	$	(89,886	)	$	15,027
Non-recurring fair value measurements - Assets
Impaired mortgage loans held for portfolio	$	—	$	—	$	5,530	$	—		$	5,530
Real estate owned	—		—		4,536		—			4,536
Total non-recurring assets at fair value	$	—	$	—	$	10,066	$	—		$	10,066

86

Notes to Unaudited Financial Statements (continued)

	December 31, 2017
(in thousands)	Level 1		Level 2		Level 3		Netting Adjustment and Cash Collateral(2)			Total
Recurring fair value measurements - Assets
Trading securities:
Non MBS:
GSE and TVA obligations	$	—	$	389,639	$	—	$	—		$	389,639
Mutual funds	9,657		—		—		—			9,657
Total trading securities	$	9,657	$	389,639	$	—	$	—		$	399,296
AFS securities:
Non MBS:
GSE and TVA obligations	$	—	$	2,820,779	$	—	$	—		2,820,779
State or local agency obligations	—		269,364		—		—			269,364
Mutual funds	2,015		—		—		—			2,015
MBS:
U.S. obligations single family MBS	—		179,273		—		—			179,273
GSE single-family MBS	—		2,665,795		—		—			2,665,795
GSE multifamily MBS	—		2,582,618		—		—			2,582,618
Private label residential MBS	—		—		524,543		—			524,543
Total AFS securities	$	2,015	$	8,517,829	$	524,543	$	—		$	9,044,387
Derivative assets:
Interest rate related (2)	$	—	$	9,376	$	—	$	71,376		$	80,752
Mortgage delivery commitments	—		4		—		—			4
Total derivative assets	$	—	$	9,380	$	—	$	71,376		$	80,756
Total recurring assets at fair value	$	11,672	$	8,916,848	$	524,543	$	71,376		$	9,524,439
Recurring fair value measurements - Liabilities
Derivative liabilities:
Interest rate related (2)	$	—	$	62,725	$	—	$	(43,265	)	$	19,460
Mortgage delivery commitments	—		61		—		—			61
Total recurring liabilities at fair value (3)	$	—	$	62,786	$	—	$	(43,265	)	$	19,521
Non-recurring fair value measurements - Assets
Impaired mortgage loans held for portfolio	$	—	$	—	$	17,329	$	—		$	17,329
Real estate owned	—		—		8,096		—			8,096
Total non-recurring assets at fair value	$	—	$	—	$	25,425	$	—		$	25,425

Notes:

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

⁽²⁾ To conform with current presentation, $11.2 million in variation margin received on cleared derivatives has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with Netting Adjustments and Cash Collateral.

⁽³⁾ Derivative liabilities represent the total liabilities at fair value.

There were no transfers between Levels 1 or 2 during the first six months of 2018 and 2017.

87

Notes to Unaudited Financial Statements (continued)

Level 3 Disclosures for all Assets and Liabilities That Are Measured at Fair Value on a Recurring Basis. The following table presents a reconciliation of all assets and liabilities that are measured at fair value on the Statement of Condition using significant unobservable inputs (Level 3) for the three and six months ended June 30, 2018 and 2017. For instruments carried at fair value, the Bank reviews the fair value hierarchy classifications each quarter. Changes in the observability of the valuation attributes may result in a reclassification of certain financial assets or liabilities. Such reclassifications are reported as transfers in/out at fair value in the quarter in which the changes occur. Transfers are reported as of the beginning of the period. There were no Level 3 transfers during the first six months of 2018 or 2017.

	AFS Private Label MBS-Residential
	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Balance, beginning of period	$	503,647		$	642,015		$	524,543		$	673,976
Total gains (losses) (realized/unrealized) included in:
Accretion of credit losses in interest income	3,794			5,345			7,579			10,466
Net OTTI losses, credit portion	(80		)	—			(342		)	(664		)
Net unrealized gains on AFS in OCI	8			25			30			91
Reclassification of non-credit portion included in net income	80			—			342			664
Net change in fair value on OTTI AFS in OCI	—			(437		)	—			(1,638		)
Unrealized gains on OTTI AFS in OCI	3,149			8,766			3,062			7,680
Purchases, issuances, sales, and settlements:
Settlements	(34,885		)	(45,338		)	(59,501		)	(80,199		)
Balance at June 30	$	475,713		$	610,376		$	475,713		$	610,376
Total amount of gains for the periods presented included in earnings attributable to the change in unrealized gains or losses relating to assets and liabilities still held at June 30	$	3,714		$	4,852		$	7,237		$	9,296

88

Notes to Unaudited Financial Statements (continued)

Note 14 – Commitments and Contingencies

The following table presents the Bank's various off-balance sheet commitments which are described in detail below.

(in thousands)	June 30, 2018						December 31, 2017
Notional amount	Expiration Date Within One Year		Expiration Date After One Year		Total		Total
Standby letters of credit outstanding (1) (2)	$	18,638,742	$	409	$	18,639,151	$	18,965,939
Commitments to fund additional advances and BOB loans	15,684		—		15,684		43,972
Commitments to fund or purchase mortgage loans	35,814		—		35,814		25,487
Unsettled consolidated obligation bonds, at par	1,863,000		—		1,863,000		1,076,200
Unsettled consolidated obligation discount notes, at par	—		—		—		565,000

Notes:

⁽¹⁾ Excludes approved requests to issue future standby letters of credit of $165.9 million and $44.1 million at June 30, 2018 and December 31, 2017, respectively.

⁽²⁾ Letters of credit in the amount of $2.9 billion and $2.2 billion at June 30, 2018 and December 31, 2017, respectively, have annual renewal language that, as long as both parties agree, permit the letter of credit to be renewed for an additional year with a maximum renewal period of approximately 5 years.

Commitments to Extend Credit on Standby Letters of Credit, Additional Advances and BOB Loans. Standby letters of credit are issued on behalf of members for a fee. A standby letter of credit is a financing arrangement between the Bank and its member. If the Bank is required to make payment for a beneficiary’s draw, these amounts are withdrawn from the member’s Demand Deposit Account (DDA). Any remaining amounts not covered by the withdrawal from the member’s DDA are converted into a collateralized overnight advance.

Unearned fees related to standby letters of credit are recorded in other liabilities and had a balance of $4.0 million and $3.9 million as of June 30, 2018 and December 31, 2017, respectively. The Bank monitors the creditworthiness of its standby letters of credit based on an evaluation of the member. The Bank has established parameters for the review, assessment, monitoring and measurement of credit risk related to these standby letters of credit.

Based on management’s credit analyses, collateral requirements, and adherence to the requirements set forth in Bank policy and Finance Agency regulations, the Bank has not recorded any additional liability on these commitments and standby letters of credit. Refer to Note 8 - Allowance for Credit Losses in this Form 10-Q. Excluding BOB, commitments and standby letters of credit are collateralized at the time of issuance. The Bank records a liability with respect to BOB commitments, which is reflected in Other liabilities on the Statement of Condition.

The Bank does not have any legally binding or unconditional unused lines of credit for advances at June 30, 2018 and December 31, 2017. However, within the Bank's Open RepoPlus advance product, there were conditional lines of credit outstanding of $9.2 billion and $8.0 billion at June 30, 2018 and December 31, 2017, respectively.

Commitments to Fund or Purchase Mortgage Loans. The Bank may enter into commitments that unconditionally obligate the Bank to purchase mortgage loans under the MPF Program. These delivery commitments are generally for periods not to exceed 60 days. Such commitments are recorded as derivatives.

Pledged Collateral. The Bank may pledge cash and securities, as collateral, related to derivatives. Refer to Note 9 - Derivatives and Hedging Activities in this Form 10-Q for additional information about the Bank's pledged collateral and other credit-risk-related contingent features.

Legal Proceedings. The Bank is subject to legal proceedings arising in the normal course of business. The Bank would record an accrual for a loss contingency when it is probable that a loss has been incurred and the amount can be reasonably estimated. After consultation with legal counsel, management does not anticipate that the ultimate liability, if any, arising out of these matters will have a material effect on the Bank's financial condition, results of operations or cash flows.

Notes 6, 9, 10, 11, and 12 also discuss other commitments and contingencies.

89

Item 3: Quantitative and Qualitative Disclosures about Market Risk

See the Risk Management section in Part I, Item 2. Management’s Discussion and Analysis in this Form 10-Q.

Item 4: Controls and Procedures

Under the supervision and with the participation of the Bank’s management, including the chief executive officer, chief financial officer, and chief accounting officer, the Bank conducted an evaluation of its disclosure controls and procedures, as such term is defined under Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the 1934 Act). Based on this evaluation, the Bank’s chief executive officer, chief financial officer, and chief accounting officer concluded that the Bank’s disclosure controls and procedures were effective as of June 30, 2018.

Internal Control Over Financial Reporting

There have been no changes in internal control over financial reporting that occurred during the second quarter of 2018 that have materially affected, or are reasonably likely to materially affect, the Bank’s internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1: Legal Proceedings

The Bank may be subject to various legal proceedings arising in the normal course of business. After consultation with legal counsel, management is not aware of any such proceedings that might result in the Bank’s ultimate liability in an amount that will have a material effect on the Bank’s financial condition or results of operations.

Item 1A: Risk Factors

There are no material changes in the Bank's Risk Factors from those previously disclosed in Part I, Item 1A. Risk Factors in the Bank’s 2017 Form 10-K.

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

None.

90

Item 6: Exhibits

Exhibit 31.1	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 for the Chief Executive Officer	Filed herewith.
Exhibit 31.2	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 for the Chief Financial Officer	Filed herewith.
Exhibit 31.3	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 for the Chief Accounting Officer	Filed herewith.
Exhibit 32.1	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 for the Chief Executive Officer	Furnished herewith.
Exhibit 32.2	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 for the Chief Financial Officer	Furnished herewith.
Exhibit 32.3	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 for the Chief Accounting Officer	Furnished herewith.
Exhibit 101	Interactive Data File (XBRL)	Filed herewith.

SIGNATURE

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 Pittsburgh

(Registrant)

Date:August 8, 2018

By: /s/ David G. Paulson

David G. Paulson

Chief Financial Officer

(Principal Financial Officer and Authorized Officer)

By: /s/ Edward V. Weller

Edward V. Weller

Chief Accounting Officer

(Authorized Officer)

91

EX-31.1

Exhibit 31.1

In accordance with Exchange Act Rules 13a-14(f) and 15d-14(f), this certification does not relate to Interactive Data Files as defined in Rule 11 of Regulation S-T.

Certification Pursuant to Section 302

of the Sarbanes-Oxley Act of 2002

for the Chief Executive Officer

I, Winthrop Watson, certify that:

1. I have reviewed this quarterly report on Form 10-Q for the Federal Home Loan Bank of Pittsburgh (the registrant);

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 officers 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 15d-15(f)) for the registrant and we 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 is made known to us, 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 officers 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 8, 2018/s/ Winthrop Watson

Name:    Winthrop Watson

Title:    President & Chief Executive Officer

EX-31.2

Exhibit 31.2

In accordance with Exchange Act Rules 13a-14(f) and 15d-14(f), this certification does not relate to Interactive Data Files as defined in Rule 11 of Regulation S-T.

Certification Pursuant to Section 302

of the Sarbanes-Oxley Act of 2002

for the Chief Financial Officer

I, David G. Paulson, certify that:

1. I have reviewed this quarterly report on Form 10-Q for the Federal Home Loan Bank of Pittsburgh (the registrant);

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 officers 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 15d-15(f)) for the registrant and we 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 is made known to us, 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 officers 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 8, 2018/s/ David G. Paulson

Name:    David G. Paulson

Title:    Chief Financial Officer

EX-31.3

Exhibit 31.3

In accordance with Exchange Act Rules 13a-14(f) and 15d-14(f), this certification does not relate to Interactive Data Files as defined in Rule 11 of Regulation S-T.

Certification Pursuant to Section 302

of the Sarbanes-Oxley Act of 2002

for the Chief Accounting Officer

I, Edward V. Weller, certify that:

1. I have reviewed this quarterly report on Form 10-Q for the Federal Home Loan Bank of Pittsburgh (the registrant);

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 officers 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 15d-15(f)) for the registrant and we 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 is made known to us, 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 officers 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 8, 2018/s/ Edward V. Weller

Name:    Edward V. Weller

Title:    Chief Accounting Officer

EX-32.1

Exhibit 32.1

In accordance with Exchange Act Rules 13a-14(f) and 15d-14(f), this certification does not relate to Interactive Data Files as defined in Rule 11 of Regulation S-T.

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

as Adopted Pursuant to Section 906

of the Sarbanes-Oxley Act of 2002 for the Chief Executive Officer

I, Winthrop Watson, state and attest that:

1. I am the Chief Executive Officer of the Federal Home Loan Bank of Pittsburgh (the registrant).

2. I hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

l this Form 10-Q of the registrant for the quarter ended June 30, 2018 (the periodic report) containing financial statements fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

l the information contained in the periodic report fairly presents, in all material respects, the financial condition and results of operations of the registrant as of, and for, the periods presented.

Date:     August 8, 2018/s/ Winthrop Watson

Name:    Winthrop Watson

Title:    President & Chief Executive Officer

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

EX-32.2

Exhibit 32.2

In accordance with Exchange Act Rules 13a-14(f) and 15d-14(f), this certification does not relate to Interactive Data Files as defined in Rule 11 of Regulation S-T.

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

as Adopted Pursuant to Section 906

of the Sarbanes-Oxley Act of 2002 for the Chief Financial Officer

I, David G. Paulson, state and attest that:

1. I am the Chief Financial Officer of the Federal Home Loan Bank of Pittsburgh (the registrant).

2. I hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

l this Form 10-Q of the registrant for the quarter ended June 30, 2018 (the periodic report) containing financial statements fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

l the information contained in the periodic report fairly presents, in all material respects, the financial condition and results of operations of the registrant as of, and for, the periods presented.

Date:     August 8, 2018/s/ David G. Paulson

Name:    David G. Paulson

Title:    Chief Financial Officer

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

EX-32.3

Exhibit 32.3

In accordance with Exchange Act Rules 13a-14(f) and 15d-14(f), this certification does not relate to Interactive Data Files as defined in Rule 11 of Regulation S-T.

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

as Adopted Pursuant to Section 906

of the Sarbanes-Oxley Act of 2002 for the Chief Accounting Officer

I, Edward V. Weller, state and attest that:

1. I am the Chief Accounting Officer of the Federal Home Loan Bank of Pittsburgh (the registrant).

2. I hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

l this Form 10-Q of the registrant for the quarter ended June 30, 2018 (the periodic report) containing financial statements fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

l the information contained in the periodic report fairly presents, in all material respects, the financial condition and results of operations of the registrant as of, and for, the periods presented.

Date:     August 8, 2018/s/ Edward V. Weller

Name:    Edward V. Weller

Title:    Chief Accounting Officer

A signed original of this written statement required by Section 906 has been provided to the Federal Home Loan Bank of Pittsburgh and will be retained by the Federal Home Loan Bank of Pittsburgh 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
Entity Information [Line Items]
Entity Registrant Name	Federal Home Loan Bank of Pittsburgh
Entity Central Index Key	0001330399
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		38,396,427

XML

Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Advances	$ 408,974	$ 237,128	$ 730,241	$ 443,350
Prepayment fees on advances, net	4	49	4	132
Interest-bearing deposits	2,495	576	3,667	754
Securities purchased under agreements to resell	1,330	453	2,448	635
Federal funds sold	26,408	15,824	55,705	25,219
Trading securities	2,922	2,816	5,738	5,632
Available-for-sale (AFS) securities	56,088	46,225	107,835	90,219
Held-to-maturity (HTM) securities	18,410	13,675	31,379	29,250
Mortgage loans held for portfolio	36,368	31,803	71,828	62,610
Total interest income	552,999	348,549	1,008,845	657,801
Interest expense:
Consolidated obligations - discount notes	102,376	57,353	198,187	92,294
Consolidated obligations - bonds	331,460	179,580	580,219	344,800
Mandatorily redeemable capital stock	77	64	162	127
Deposits	1,970	1,128	3,626	1,917
Other borrowings	0	10	9	16
Total interest expense	435,883	238,135	782,203	439,154
Net interest income	117,116	110,414	226,642	218,647
Provision (benefit) for credit losses	423	(90)	2,795	(92)
Net interest income after provision (benefit) for credit losses	116,693	110,504	223,847	218,739
Other noninterest income (loss):
Total OTTI losses (Note 5)	0	0	0	0
OTTI losses reclassified to (from) AOCI (Note 5)	(80)	0	(342)	(664)
Net OTTI losses, credit portion (Note 5)	(80)	0	(342)	(664)
Net gains (losses) on trading securities (Note 2)	(2,710)	5,321	(11,402)	7,606
Net gains (losses) on derivatives and hedging activities (Note 9)	4,059	(4,295)	8,171	135
Standby letters of credit fees	5,695	5,958	11,483	12,044
Other, net	637	21	1,410	667
Total other noninterest income	7,601	7,005	9,320	19,788
Other Expense
Compensation and benefits	12,349	10,354	24,149	25,276
Other operating	7,553	7,137	14,214	13,888
Finance Agency	1,406	1,290	2,956	2,699
Office of Finance	1,217	911	2,407	2,375
Total other expense	22,525	19,692	43,726	44,238
Income before assessments	101,769	97,817	189,441	194,289
Affordable Housing Program (AHP) assessment	10,184	9,788	18,960	19,442
Net Income	$ 91,585	$ 88,029	$ 170,481	$ 174,847

XML

Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net Income	$ 91,585	$ 88,029	$ 170,481	$ 174,847
Other comprehensive income (loss):
Net unrealized gains (losses) on AFS securities	714	31,654	(13,901)	63,029
Net non-credit portion of OTTI gains (losses) on AFS securities	3,229	8,329	3,404	6,706
Reclassification of net (gains) losses included in net income relating to hedging activities	(4)	(4)	(12)	(11)
Pension and post-retirement benefits	176	86	296	172
Total other comprehensive income (loss)	4,115	40,065	(10,213)	69,896
Total comprehensive income	$ 95,700	$ 128,094	$ 160,268	$ 244,743

XML

Statements of Condition - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 161,924	$ 3,414,992
Interest-bearing deposits	620,888	280,340
Federal funds sold	5,975,000	5,650,000
Securities purchased under agreements to resell	1,500,000	500,000
Investment securities
Trading securities (Note 2)	535,095	399,296
AFS securities at fair value (Note 3)	8,318,998	9,044,387
HTM securities; fair value of $3,802,259 and $1,894,534 respectively (Note 4)	3,802,405	1,883,051
Total investment securities	12,656,498	11,326,734
Advances, net (Note 6)	76,340,011	74,279,798
Mortgage loans held for portfolio (Note 7), net of allowance for credit losses of $8,054 and $5,954, respectively (Note 8)	4,171,476	3,923,123
Banking on Business (BOB) loans, net of allowance for credit losses of $2,402 and $1,964, respectively	16,214	14,083
Accrued interest receivable	209,555	164,459
Premises, software and equipment, net	8,621	8,179
Derivative assets (Note 9)	115,533	80,756	[1],[2]
Other assets	38,609	20,542
Total assets	101,814,329	99,663,006
Deposits
Interest-bearing	520,670	514,275
Noninterest-bearing	30,422	23,801
Total deposits	551,092	538,076
Consolidated obligations: (Note 10)
Discount notes	26,988,892	36,193,289
Bonds	68,681,867	57,533,722
Total consolidated obligations	95,670,759	93,727,011
Mandatorily redeemable capital stock (Note 11)	4,530	5,113
Accrued interest payable	170,415	118,473
AHP payable	95,341	91,563
Derivative liabilities (Note 9)	15,027	19,521	[2]
Other liabilities	40,264	235,761
Total liabilities	96,547,428	94,735,518
Commitments and contingencies ( Note 14)
Capital (Note 11)
Capital stock - putable ($100 par value) issued and outstanding 39,505 and 36,587 shares, respectively	3,950,450	3,658,656
Retained earnings:
Unrestricted	899,131	875,395
Restricted	316,569	282,473
Total retained earnings	1,215,700	1,157,868
Accumulated Other Comprehensive Income (AOCI)	100,751	110,964
Total capital	5,266,901	4,927,488
Total liabilities and capital	$ 101,814,329	$ 99,663,006

[1] To conform with current presentation, $11.2 million of variation margin received from the Clearing House for daily settled contracts has been allocated to the individual instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

[2] To conform with current presentation, $11.2 million of variation margin received from the Clearing House has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

XML

Statement of Condition (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Held to maturity securities - fair value	$ 3,802,259	$ 1,894,534
Allowance for Credit losses, Mortgage Loans	(8,054)	(5,954)
Allowance for Credit Losses, BOB loans	$ (2,402)	$ (1,964)
Stockholders' Equity Attributable to Parent [Abstract]
Capital Stock, Par value Per Share	$ 100	$ 100
Capital Stock, Shares, Issued and Outstanding	39,505	36,587

XML

Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
OPERATING ACTIVITIES
Net Income	$ 170,481	$ 174,847
Adjustments to reconcile net income to net cash provided by(used in) operating activities:
Depreciation and amortization	(23,324)	1,142
Net change in derivative and hedging activities	159,048	(28,790)
Net OTTI credit losses	342	664
Other adjustments	2,798	(93)
Net change in:
Trading securities	(145,456)	(8,525)
Accrued interest receivable	(45,423)	(16,410)
Other assets	(10,130)	(1,361)
Accrued interest payable	51,943	1,083
Other liabilities	1,177	7,782
Net cash provided by operating activities	161,456	130,339
Net change in:
Interest-bearing deposits (including ($548) and $778 (to) from other FHLBanks for mortgage loan program)	(413,718)	(176,764)
Securities purchased under agreements to resell	(1,000,000)	1,500,000
Federal funds sold	(325,000)	(2,853,000)
AFS securities:
Proceeds	910,550	642,524
Purchases	(434,628)	(535,482)
HTM securities:
Net change in short-term	(1,525,000)	(150,000)
Proceeds from long-term maturities	151,879	286,396
Purchases of long-term	(546,802)	(98,286)
Advances:
Repaid	737,362,625	416,070,963
Originated	(739,591,271)	(413,335,106)
Mortgage loans held for portfolio:
Proceeds	203,710	226,398
Purchases	(463,609)	(382,700)
Proceeds from sale of foreclosed assets	5,123	3,627
Premises, software and equipment [Abstract]
Purchases	(1,939)	(686)
Net cash provided by (used in) investing activities	(5,668,080)	1,197,884
FINANCING ACTIVITIES
Net change in deposits	13,881	32,100
Net proceeds from issuance of consolidated obligations:
Discount notes	208,065,350	97,327,761
Bonds	32,090,222	23,153,680
Payments for maturing and retiring consolidated obligations
Discount notes	(217,258,536)	(93,915,228)
Bonds	(20,835,923)	(27,397,101)
Proceeds from issuance of capital stock	2,734,464	2,096,726
Payments for repurchase/redemption of capital stock	(2,442,653)	(2,119,283)
Payments for repurchase/redemption of mandatorily redeemable capital stock	(600)	(466)
Cash dividends paid	(112,649)	(83,624)
Net cash provided by (used in) financing activities	2,253,556	(905,435)
Net increase (decrease) in cash and due from banks	(3,253,068)	422,788
Cash and due from banks at beginning of the period	3,414,992	3,587,605
Cash and due from banks at end of the period	161,924	4,010,393
Supplemental disclosures:
Interest paid	755,916	435,191
AHP payments	15,182	10,023
Transfers of mortgage loans to real estate owned	2,537	2,679
Variation margin recharacterized as settlement payments on derivative contracts	$ 0	$ 44,674

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Statement of Cash Flows (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Interest-bearing deposits (including ($548) and $778 (to) from other FHLBanks for mortgage loan program)	$ 548	$ (778)

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Statements of Changes in Capital - USD ($) shares in Thousands, $ in Thousands	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]
Total capital, beginning balance			$ 4,927,488	$ 4,793,915
Comprehensive Income	$ 95,700	$ 128,094	160,268	244,743
Issuance of capital stock			2,734,464	2,096,726
Repurchase/redemption of capital stock			(2,442,653)	(2,119,283)
Net shares reclassified to mandatorily redeemable capital stock			(17)	(269)
Cash dividends			(112,649)	(83,624)
Total capital, ending balance	$ 5,266,901	$ 4,932,208	$ 5,266,901	$ 4,932,208
Capital Stock - Putable
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, shares beginning balance			36,587	37,554
Total capital, beginning balance			$ 3,658,656	$ 3,755,411
Issuance of capital stock, shares			27,345	20,967
Issuance of capital stock			$ 2,734,464	$ 2,096,726
Repurchase/redemption of capital stock, shares			(24,427)	(21,192)
Repurchase/redemption of capital stock			$ (2,442,653)	$ (2,119,283)
Net shares reclassified to mandatorily redeemable capital stock, shares			0	(3)
Net shares reclassified to mandatorily redeemable capital stock			$ (17)	$ (269)
Balance, shares ending balance	39,505	37,326	39,505	37,326
Total capital, ending balance	$ 3,950,450	$ 3,732,585	$ 3,950,450	$ 3,732,585
Retained Earnings, Unrestricted
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital, beginning balance			875,395	771,661
Comprehensive Income			136,385	139,878
Cash dividends			(112,649)	(83,624)
Total capital, ending balance	899,131	827,915	899,131	827,915
Retained Earnings, Restricted
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital, beginning balance			282,473	214,547
Comprehensive Income			34,096	34,969
Total capital, ending balance	316,569	249,516	316,569	249,516
Retained Earnings Total
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital, beginning balance			1,157,868	986,208
Comprehensive Income			170,481	174,847
Cash dividends			(112,649)	(83,624)
Total capital, ending balance	1,215,700	1,077,431	1,215,700	1,077,431
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital, beginning balance	96,636	82,127	110,964	52,296
Comprehensive Income			(10,213)	69,896
Total capital, ending balance	$ 100,751	$ 122,192	$ 100,751	$ 122,192

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Background Information Background Information (Notes)

6 Months Ended

Jun. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of Operations [Text Block]

Background Information

The Bank, a federally chartered corporation, is one of 11 district Federal Home Loan Banks (FHLBanks). The FHLBanks are government-sponsored enterprises (GSEs) that serve the public by increasing the availability of credit for residential mortgages and community development. The Bank provides a readily available, low-cost source of funds to its member institutions. The Bank is a cooperative, which means that current members own nearly all of the outstanding capital stock of the Bank. All holders of the Bank’s capital stock may, to the extent declared by the Board, receive dividends on their capital stock. Regulated financial depositories and insurance companies engaged in residential housing finance that maintain their principal place of business (as defined by Finance Agency regulation) in Delaware, Pennsylvania or West Virginia may apply for membership. Community Development Financial Institutions (CDFIs) which meet membership regulation standards are also eligible to become Bank members. State and local housing associates that meet certain statutory and regulatory criteria may also borrow from the Bank. While eligible to borrow, state and local housing associates are not members of the Bank and, as such, do not hold capital stock.

All members must purchase stock in the Bank. The amount of capital stock a member owns is based on membership requirements (membership asset value) and activity requirements (i.e., outstanding advances, letters of credit, and the principal balance of certain residential mortgage loans sold to the Bank). The Bank considers those members with capital stock outstanding in excess of 10% of total capital stock outstanding to be related parties. See Note 12 - Transactions with Related Parties for additional information.

The Federal Housing Finance Agency (Finance Agency) is the independent regulator of the FHLBanks. The mission of the Finance Agency is to ensure the FHLBanks operate in a safe and sound manner so they serve as a reliable source for liquidity and funding for housing finance and community investment. Each FHLBank operates as a separate entity with its own management, employees and board of directors. The Bank does not consolidate any off-balance sheet special-purpose entities or other conduits.

As provided by the Federal Home Loan Bank Act (FHLBank Act) or Finance Agency regulation, the Bank’s debt instruments, referred to as consolidated obligations, are joint and several obligations of all the FHLBanks and are the primary source of funds for the FHLBanks. These funds are primarily used to provide advances, purchase mortgages from members through the MPF Program and purchase certain investments. See Note 10 - Consolidated Obligations for additional information. The Office of Finance (OF) is a joint office of the FHLBanks established to facilitate the issuance and servicing of the consolidated obligations of the FHLBanks and to prepare the combined quarterly and annual financial reports of all the FHLBanks. Deposits, other borrowings, and capital stock issued to members provide other funds. The Bank primarily invests these funds in short-term investments to provide liquidity. The Bank also provides member institutions with correspondent services, such as wire transfer, safekeeping and settlement with the Federal Reserve.

The accounting and financial reporting policies of the Bank conform to U.S. Generally Accepted Accounting Principles (GAAP). Preparation of the unaudited financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, as well as the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses. Actual results could differ from those estimates. In addition, from time to time certain amounts in the prior period may be reclassified to conform to the current presentation. To the extent that any reclassifications were made, the reclassifications did not have a material impact on the Bank's financial statements. In the opinion of management, all normal recurring adjustments have been included for a fair statement of this interim financial information. These unaudited financial statements should be read in conjunction with the audited financial statements for the year ended December 31, 2017 included in the Bank's 2017 Form 10-K.

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Accounting Adjustments, Changes in Accounting Principle and Recently Issued Accounting Standards and Interpretations

6 Months Ended

Jun. 30, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Accounting Adjustments, Changes in Accounting Principle and Recently Issued Accounting Standards and Interpretations

Changes in Accounting Principle and Recently Issued Accounting Standards and Interpretations

The Bank adopted the following new accounting standards during the six months ended June 30, 2018.

Standard	Description	Adoption Date and Transition	Effect on the Financial Statements or Other Significant Matters
Accounting Standards Update (ASU) 2017-07: Improving the presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	This ASU requires entities to disaggregate the service cost component of net benefit cost from other components and present the other components outside of income from operations. It also requires that only the service cost component be eligible for capitalization.	The Bank adopted this ASU on January 1, 2018. The presentation of service costs separately was adopted on a retrospective basis. The limiting of capitalization to service costs was adopted on a prospective basis.	The adoption of this ASU did not materially impact the Bank’s results of operations. It resulted in an immaterial reclassification of other pension costs from "Compensation and benefits" to "Other operating" in the Statement of Income for all periods presented.
ASU 2016-15: Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments	This ASU is focused on reducing diversity in practice in the Statement of Cash Flows by providing clarification on eight classification issues.	The Bank adopted this ASU on January 1, 2018 on a modified retrospective basis.	The adoption of this ASU resulted in the Bank including interest paid on consolidated obligation discount notes in its "Interest paid" supplemental disclosure in the Statement of Cash Flows for all periods presented.
ASU 2016-01: Financial Instruments - Recognition and Measurement of Financial Assets and Financial Liabilities	This ASU amends certain requirements for accounting for the recognition and measurement of financial instruments. Most notably, this guidance revises the accounting for equity securities, financial instruments measured under the fair value option, and certain disclosure requirements for fair value of financial instruments.	The Bank adopted this ASU on January 1, 2018 on a modified retrospective basis.	The adoption of this ASU did not materially impact the Bank’s financial condition or results of operations. The Bank reclassified immaterial investments from "Trading securities" and "AFS securities" to "Other assets" in the Statement of Condition on January 1, 2018. The Bank also reflected the reduced disclosure requirements for financial instruments not recognized at fair value in the financial statements.
ASU 2014-09: Revenue from Contracts with Customers in conjunction with ASU 2017-05: Gains and Losses from the Derecognition of Nonfinancial Assets	ASU 2014-09 was issued to increase comparability across industries by providing a single, comprehensive revenue recognition model for all contracts with customers. It will require recognition of revenue to reflect the economics of the transaction and will require expanded disclosures regarding revenue recognition. ASU 2017-05 clarifies that the guidance in ASU 2014-09 should also be applied to the accounting for derecognition of nonfinancial assets, including sales of real estate assets such as REO.	This Bank adopted this ASU on January 1, 2018 on a modified retrospective basis.	The adoption of these ASUs did not impact the Bank’s financial condition or results of operations, as the majority of the Bank’s revenue is derived from financial instruments, which are excluded from the scope of this guidance.

The following table provides a brief description of recently issued accounting standards which may have an impact on the Bank.

Standard	Description	Effective Date and Transition	Effect on the Financial Statements or Other Significant Matters
ASU 2018-11: Targeted Improvements to Accounting for Leases	This ASU provides an additional transition method for the new leases standard, ASU 2016-02.	This ASU is effective for the Bank beginning January 1, 2019 and will be adopted on a modified retrospective basis as of the effective date.	The Bank will utilize the additional transition method to apply the new leases standard as of its effective date. Upon adoption, the Bank will not be required to restate comparative reporting periods.
ASU 2018-08: Contributions Received and Contributions Made	This ASU clarifies the distinction between exchange transactions and contributions, including whether a contribution is conditional.	This ASU is effective for the Bank beginning January 1, 2019 and will be adopted on a modified prospective basis.	The Bank is continuing to evaluate the impact of this ASU on its financial statements.
ASU 2017-12: Targeted Improvements to Accounting for Hedging Activities	This ASU makes amendments to the accounting for derivatives and hedging activities intended to better portray the economics of the transactions.	This ASU is effective for the Bank beginning January 1, 2019 and allows for early adoption. The guidance will be applied to existing hedging relationships as of the beginning of the year of adoption.	The Bank is continuing to evaluate the impact of this ASU on its financial statements. The Bank's hedging strategies, documentation, effectiveness testing, and presentation and disclosure may be impacted by this ASU.
ASU 2017-08: Premium Amortization on Purchased Callable Debt Securities	This ASU requires that the amortization period for premiums on certain purchased callable debt securities be shortened to the earliest call date, rather than contractual maturity.	This ASU is effective for the Bank beginning January 1, 2019 and will be adopted on a modified retrospective basis.	The Bank is continuing to evaluate the impact of this ASU on its financial statements. The Bank does not believe that the impact will be material to its financial condition or results of operations as it does not typically purchase callable debt securities at premiums.
ASU 2016-13: Financial Instruments - Credit Losses	This ASU makes substantial changes to the accounting for credit losses on certain financial instruments. It replaces the current incurred loss model with a new model based on lifetime expected credit losses, which the FASB believes will result in more timely recognition of credit losses.	This ASU is effective for the Bank no later than January 1, 2020 and will generally be adopted on a modified retrospective basis, with the exception of previously-OTTI AFS debt securities, for which the guidance will be applied prospectively.	The Bank is continuing to evaluate the impact of this ASU on its financial statements and will continue to monitor interpretations made by standard-setters and regulators. The Bank expects its allowance for credit losses on MPF loans to increase; however, the Bank does not currently have an estimate of the amount of the expected increase. The Bank has not yet determined the impact this standard will have on its private label MBS securities. The Bank will continue to evaluate the appropriateness of an allowance for credit losses on other specific elements of its financial statements.

Standard	Description	Effective Date and Transition	Effect on the Financial Statements or Other Significant Matters
ASU 2016-02: Leases	This ASU amends the accounting for leases. It will require lessees to recognize a right-of-use asset and lease liability for virtually all leases.	This ASU is effective for the Bank no later than January 1, 2019 and will be adopted on a modified retrospective basis as of the effective date.	The Bank is continuing to evaluate the impact of this ASU on its financial statements. Upon adoption, the Bank will increase its assets and liabilities for capitalized leases. The Bank’s most significant lease is its headquarters. Future minimum lease payments under current accounting standards are disclosed in Note 20 - Commitments and Contingencies in its 2017 Form 10-K. Substantially all of these payments represent the building lease.

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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) Disclosure [Text Block]

Trading Securities

The following table presents trading securities as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Mutual funds (1)	$	—	$	9,657
U.S. Treasury obligations	97,972		—
GSE and TVA obligations	437,123		389,639
Total	$	535,095	$	399,296

Note:

⁽¹⁾ Reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01, effective January 1, 2018. Refer to Note 1 in this Form 10-Q.

The following table presents net gains (losses) on trading securities for the second quarter and the first six months of 2018 and 2017.

	Three months ended June 30,					Six months ended June 30,
(in thousands)	2018			2017		2018			2017
Net unrealized gains (losses) on trading securities held at period-end	$	(2,710	)	$	5,321	$	(11,402	)	$	7,606
Net realized gains (losses) on trading securities sold/matured during the period	—			—		—			—
Net gains (losses) on trading securities	$	(2,710	)	$	5,321	$	(11,402	)	$	7,606

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Available-for-Sale (AFS) Securities

6 Months Ended

Jun. 30, 2018

Available-for-sale Securities

Investment Holdings [Line Items]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Available-for-Sale (AFS) Securities

The following tables present AFS securities as of June 30, 2018 and December 31, 2017.

	June 30, 2018
(in thousands)	Amortized Cost (1)		OTTI Recognized in AOCI (2)		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-MBS:
GSE and TVA obligations	$	2,397,893	$	—	$	33,175	$	(4,003	)	$	2,427,065
State or local agency obligations	264,032		—		2,292		(5,352		)	260,972
Total non-MBS	$	2,661,925	$	—	$	35,467	$	(9,355	)	$	2,688,037
MBS:
U.S. obligations single family MBS	$	165,238	$	—	$	541	$	(51	)	$	165,728
GSE single-family MBS	2,512,230		—		15,329		(6,490		)	2,521,069
GSE multifamily MBS	2,476,465		—		1,402		(9,416		)	2,468,451
Private label residential MBS	399,474		—		76,357		(118		)	475,713
Total MBS	$	5,553,407	$	—	$	93,629	$	(16,075	)	$	5,630,961
Total AFS securities	$	8,215,332	$	—	$	129,096	$	(25,430	)	$	8,318,998

	December 31, 2017
(in thousands)	Amortized Cost (1)		OTTI Recognized in AOCI (2)		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-MBS:
Mutual funds (3)	$	2,015	$	—	$	—	$	—		$	2,015
GSE and TVA obligations	2,798,838		—		27,460		(5,519		)	2,820,779
State or local agency obligations	264,812		—		5,546		(994		)	269,364
Total non-MBS	$	3,065,665	$	—	$	33,006	$	(6,513	)	$	3,092,158
MBS:
U.S. obligations single family MBS	$	178,882	$	—	$	465	$	(74	)	$	179,273
GSE single-family MBS	2,654,315		—		15,238		(3,758		)	2,665,795
GSE multifamily MBS	2,579,625		—		5,162		(2,169		)	2,582,618
Private label residential MBS	451,737		—		72,953		(147		)	524,543
Total MBS	$	5,864,559	$	—	$	93,818	$	(6,148	)	$	5,952,229
Total AFS securities	$	8,930,224	$	—	$	126,824	$	(12,661	)	$	9,044,387

Notes:

⁽¹⁾ Amortized cost includes adjustments made to the cost basis of an investment for accretion of discounts and/or amortization of premiums, collection of cash, OTTI recognized, and/or fair value hedge accounting adjustments.

⁽²⁾ Represents the non-credit portion of an OTTI recognized during the life of the security.

⁽³⁾ Reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01, effective January 1, 2018. Refer to Note 1 in this Form 10-Q.

As of June 30, 2018, the amortized cost of the Bank’s MBS classified as AFS included net purchased discounts of $16.9 million, credit losses of $179.2 million and OTTI-related accretion adjustments of $69.6 million. As of December 31, 2017, these amounts were $16.3 million, $178.8 million and $62.1 million, respectively.

The following table presents a reconciliation of the AFS OTTI loss recognized through AOCI to the total net non-credit portion of OTTI gains on AFS securities in AOCI as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Non-credit portion of OTTI losses	$	—	$	—
Net unrealized gains on OTTI securities since their last OTTI credit charge	76,357		72,953
Net non-credit portion of OTTI gains on AFS securities in AOCI	$	76,357	$	72,953

The following tables summarize the AFS securities with unrealized losses as of June 30, 2018 and December 31, 2017. The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position.

	June 30, 2018
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses (1)
Non-MBS:
GSE and TVA obligations	$	16,945	$	(338	)	$	914,515	$	(3,665	)	$	931,460	$	(4,003	)
State or local agency obligations	49,670		(865		)	74,288		(4,487		)	123,958		(5,352		)
Total non-MBS	$	66,615	$	(1,203	)	$	988,803	$	(8,152	)	$	1,055,418	$	(9,355	)
MBS:
U.S. obligations single-family MBS	$	—	$	—		$	25,572	$	(51	)	$	25,572	$	(51	)
GSE single-family MBS	194,089		(2,350		)	150,692		(4,140		)	344,781		(6,490		)
GSE multifamily MBS	1,461,775		(9,416		)	—		—			1,461,775		(9,416		)
Private label residential MBS	—		—			3,043		(118		)	3,043		(118		)
Total MBS	$	1,655,864	$	(11,766	)	$	179,307	$	(4,309	)	$	1,835,171	$	(16,075	)
Total	$	1,722,479	$	(12,969	)	$	1,168,110	$	(12,461	)	$	2,890,589	$	(25,430	)

	December 31, 2017
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses (1)
Non-MBS:
GSE and TVA obligations	$	12,386	$	(114	)	$	1,262,810	$	(5,405	)	$	1,275,196	$	(5,519	)
State or local agency obligations	4,371		(78		)	77,859		(916		)	82,230		(994		)
Total non-MBS	$	16,757	$	(192	)	$	1,340,669	$	(6,321	)	$	1,357,426	$	(6,513	)
MBS:
U.S. obligations single family MBS	$	—	$	—		$	37,330	$	(74	)	$	37,330	$	(74	)
GSE single-family MBS	150,170		(651		)	272,925		(3,107		)	423,095		(3,758		)
GSE multifamily MBS	424,932		(2,096		)	10,796		(73		)	435,728		(2,169		)
Private label residential MBS	—		—			3,013		(147		)	3,013		(147		)
Total MBS	$	575,102	$	(2,747	)	$	324,064	$	(3,401	)	$	899,166	$	(6,148	)
Total	$	591,859	$	(2,939	)	$	1,664,733	$	(9,722	)	$	2,256,592	$	(12,661	)

Note:

⁽¹⁾ Total unrealized losses equal the sum of “OTTI Recognized in AOCI” and “Gross Unrealized Losses” in the first two tables of this Note 3.

Redemption Terms. The amortized cost and fair value of AFS securities by contractual maturity as of June 30, 2018 and December 31, 2017 are presented below. Expected maturities of some securities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment fees.

(in thousands)	June 30, 2018				December 31, 2017
Year of Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in one year or less	$	984,940	$	982,701	$	1,002,015	$	999,160
Due after one year through five years	298,276		301,970		607,802		611,231
Due after five years through ten years	731,591		746,432		676,975		687,993
Due in more than ten years	647,118		656,934		778,873		793,774
Total non-MBS	2,661,925		2,688,037		3,065,665		3,092,158
MBS	5,553,407		5,630,961		5,864,559		5,952,229
Total AFS securities	$	8,215,332	$	8,318,998	$	8,930,224	$	9,044,387

Interest Rate Payment Terms.  The following table details interest payment terms at June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Amortized cost of AFS non-MBS:
Fixed-rate	$	2,576,985	$	2,980,770
Variable-rate	84,940		84,895
Total non-MBS	$	2,661,925	$	3,065,665
Amortized cost of AFS MBS:
Fixed-rate	$	1,090,644	$	1,142,290
Variable-rate	4,462,763		4,722,269
Total MBS	$	5,553,407	$	5,864,559
Total amortized cost of AFS securities	$	8,215,332	$	8,930,224

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Held-to-Maturity (HTM) Securities

6 Months Ended

Jun. 30, 2018

Held-to-maturity Securities

Investment Holdings [Line Items]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Held-to-Maturity (HTM) Securities

The following tables present HTM securities as of June 30, 2018 and December 31, 2017.

	June 30, 2018
(in thousands)	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Fair Value
Non-MBS:
Certificates of deposit	$	1,700,000	$	63	$	(53	)	$	1,700,010
State or local agency obligations	117,455		75		(4,399		)	113,131
Total non-MBS	$	1,817,455	$	138	$	(4,452	)	$	1,813,141
MBS:
U.S. obligations single-family MBS	$	370,376	$	3,576	$	—		$	373,952
GSE single-family MBS	681,427		4,049		(203		)	685,273
GSE multifamily MBS	694,501		3,373		(10,207		)	687,667
Private label residential MBS	238,646		3,879		(299		)	242,226
Total MBS	$	1,984,950	$	14,877	$	(10,709	)	$	1,989,118
Total HTM securities	$	3,802,405	$	15,015	$	(15,161	)	$	3,802,259

	December 31, 2017
(in thousands)	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Fair Value
Non-MBS:
Certificates of deposit	$	175,000	$	30	$	—		$	175,030
State or local agency obligations	122,400		62		(5,571		)	116,891
Total non-MBS	$	297,400	$	92	$	(5,571	)	$	291,921
MBS:
U.S. obligations single-family MBS	$	424,341	$	4,112	$	—		$	428,453
GSE single-family MBS	156,597		2,323		(39		)	158,881
GSE multifamily MBS	726,008		9,186		(3,298		)	731,896
Private label residential MBS	278,705		4,953		(275		)	283,383
Total MBS	$	1,585,651	$	20,574	$	(3,612	)	$	1,602,613
Total HTM securities	$	1,883,051	$	20,666	$	(9,183	)	$	1,894,534

The following tables summarize the HTM securities with unrealized losses as of June 30, 2018 and December 31, 2017. The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position.

	June 30, 2018
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-MBS:
Certificates of deposit	$	449,947	$	(53	)	$	—	$	—		$	449,947	$	(53	)
State or local agency obligations	—		—			102,371		(4,399		)	102,371		(4,399		)
Total non-MBS	$	449,947	$	(53	)	$	102,371	$	(4,399	)	$	552,318	$	(4,452	)
MBS:
GSE single-family MBS	$	74,524	$	(166	)	$	4,988	$	(37	)	$	79,512	$	(203	)
GSE multifamily MBS	250,746		(5,646		)	92,016		(4,561		)	342,762		(10,207		)
Private label residential MBS	3,617		(18		)	13,454		(281		)	17,071		(299		)
Total MBS	$	328,887	$	(5,830	)	$	110,458	$	(4,879	)	$	439,345	$	(10,709	)
Total	$	778,834	$	(5,883	)	$	212,829	$	(9,278	)	$	991,663	$	(15,161	)

	December 31, 2017
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-MBS:
State or local agency obligations	$	—	$	—		$	105,119	$	(5,571	)	$	105,119	$	(5,571	)
MBS:
GSE single-family MBS	$	—	$	—		$	5,633	$	(39	)	$	5,633	$	(39	)
GSE multifamily MBS	169,089		(790		)	94,241		(2,508		)	263,330		(3,298		)
Private label residential MBS	—		—			27,079		(275		)	27,079		(275		)
Total MBS	$	169,089	$	(790	)	$	126,953	$	(2,822	)	$	296,042	$	(3,612	)
Total	$	169,089	$	(790	)	$	232,072	$	(8,393	)	$	401,161	$	(9,183	)

Redemption Terms. The amortized cost and fair value of HTM securities by contractual maturity as of June 30, 2018 and December 31, 2017 are presented below. Expected maturities of some securities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment fees.

(in thousands)	June 30, 2018				December 31, 2017
Year of Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Non-MBS:
Due in one year or less	$	1,700,000	$	1,700,010	$	175,000	$	175,030
Due after one year through five years	10,685		10,760		—		—
Due after five years through ten years	28,305		27,677		42,010		41,211
Due after ten years	78,465		74,694		80,390		75,680
Total non-MBS	1,817,455		1,813,141		297,400		291,921
MBS	1,984,950		1,989,118		1,585,651		1,602,613
Total HTM securities	$	3,802,405	$	3,802,259	$	1,883,051	$	1,894,534

Interest Rate Payment Terms. The following table details interest rate payment terms at June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Amortized cost of HTM non-MBS:
Fixed-rate	$	1,700,000	$	175,000
Variable-rate	117,455		122,400
Total non-MBS	$	1,817,455	$	297,400
Amortized cost of HTM MBS:
Fixed-rate	$	1,291,410	$	787,395
Variable-rate	693,540		798,256
Total MBS	$	1,984,950	$	1,585,651
Total HTM securities	$	3,802,405	$	1,883,051

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Other-Than-Temporary Impairment

6 Months Ended

Jun. 30, 2018

Other Than Temporary Impairment [Abstract]

Other-Than-Temporary Impairment

Other-Than-Temporary Impairment (OTTI)

The Bank evaluates its individual AFS and HTM securities in an unrealized loss position for OTTI on a quarterly basis. The Bank assesses whether there is OTTI by performing an analysis to determine if any securities will incur a credit loss, the amount of which could be up to the difference between the security's amortized cost basis and its fair value, and records any difference in its Statement of Income. For information on the Bank’s accounting for OTTI, see Note 1 - Summary of Significant Accounting Policies to the audited financial statements in the Bank's 2017 Form 10-K. For information about how the Bank projects cash flows expected to be collected, see Note 7 - OTTI to the audited financial statements in the Bank’s 2017 Form 10-K.

The Bank performed a cash flow analysis using two third-party models to assess whether the amortized cost basis of its private label residential MBS will be recovered. During the second quarter of 2018, the OTTI Governance Committee developed a short-term housing price forecast using whole percentages with changes ranging from (8.0)% to 13.0% over the 12 month period beginning April 1, 2018. For the vast majority of markets the short-term forecast has changes from 2.0% to 7.0%. Thereafter, a unique path is projected for each geographic area based on an internally developed framework derived from historical data.

All of the Bank's other-than-temporarily impaired securities were classified as AFS as of June 30, 2018. The "Total OTTI securities" balances below summarize the Bank’s securities as of June 30, 2018 for which an OTTI has been recognized during the life of the security. The "Private label MBS with no OTTI" balances below represent AFS securities on which an OTTI was not taken. The sum of these two amounts reflects the total AFS private label MBS balance.

	OTTI Recognized During the Life of the Security
(in thousands)	Unpaid Principal Balance		Amortized Cost (1)		Fair Value
Private label residential MBS:
Prime	$	219,705	$	164,814	$	201,843
Alt-A	303,321		231,500		270,827
Total OTTI securities	523,026		396,314		472,670
Private label MBS with no OTTI	3,160		3,160		3,043
Total AFS private label MBS	$	526,186	$	399,474	$	475,713

Notes:

⁽¹⁾ Amortized cost includes adjustments made to the cost basis of an investment for accretion of discounts and/or amortization of premiums, collection of cash, and/or OTTI recognized.

The following table presents the rollforward of the amounts related to OTTI credit losses recognized during the life of the security for which a portion of the OTTI charges was recognized in AOCI for the three and six months ended June 30, 2018 and 2017.

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Beginning balance	$	205,938		$	230,450		$	210,875		$	236,460
Additions:
Additional OTTI credit losses for which an OTTI charge was previously recognized(1)	80			—			342			664
Reductions:
Securities sold and matured during the period	—			(191		)	—			(191		)
Increases in cash flows expected to be collected (accreted as interest income over the remaining lives of the applicable securities)	(4,913		)	(6,906		)	(10,112		)	(13,580		)
Ending balance	$	201,105		$	223,353		$	201,105		$	223,353

Notes:

⁽¹⁾ For the three months ended June 30, 2018 and 2017, additional OTTI credit losses for which an OTTI charge was previously recognized relate to all securities that were previously impaired prior to April 1 of the applicable year. For the six months ended June 30, 2018 and 2017, additional OTTI credit losses for which an OTTI charge was previously recognized relate to all securities that were previously impaired prior to January 1 of the applicable year.

All Other AFS and HTM Investments. At June 30, 2018, the Bank held certain securities in an unrealized loss position. These unrealized losses were considered to be temporary as the Bank expects to recover the entire amortized cost basis on the remaining securities in unrealized loss positions based on the creditworthiness of the underlying creditor, guarantor, or implicit government support, and the Bank neither intends to sell these securities nor considers it more likely than not that the Bank would be required to sell any such security before its anticipated recovery. As a result, the Bank did not consider any of these other investments to be other-than-temporarily impaired at June 30, 2018.

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Advances

6 Months Ended

Jun. 30, 2018

Advances [Abstract]

Advances

Advances

General Terms. The Bank offers fixed- and variable-rate advance products with different maturities, interest rates, payment characteristics and optionality. Fixed-rate advances generally have maturities ranging from one day to 30 years. Variable-rate advances generally have maturities ranging from less than 30 days to ten years, and the interest rates reset periodically at a fixed spread to LIBOR or other specified indices.

At June 30, 2018 and December 31, 2017, the Bank had advances outstanding, including AHP advances, with interest rates ranging from 0.83% to 7.40%. AHP subsidized advances have an interest rate of 5.50%.

The following table details the Bank’s advances portfolio by year of contractual maturity as of June 30, 2018 and December 31, 2017.

(dollars in thousands)	June 30, 2018					December 31, 2017
Year of Contractual Maturity	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Due in 1 year or less	$	33,000,442		2.14	%	$	31,606,861		1.56	%
Due after 1 year through 2 years	13,876,672			2.20		11,786,189			1.63
Due after 2 years through 3 years	20,335,058			2.38		18,456,775			1.71
Due after 3 years through 4 years	6,470,173			2.43		10,445,920			1.85
Due after 4 years through 5 years	2,146,531			2.57		1,254,184			2.14
Thereafter	781,011			2.76		833,938			2.72
Total par value	76,609,887			2.26	%	74,383,867			1.67	%
Discount on AHP advances	—					(1		)
Deferred prepayment fees	(400		)			(613		)
Hedging adjustments	(269,476		)			(103,455		)
Total book value	$	76,340,011				$	74,279,798

The Bank also offers convertible advances. Convertible advances allow the Bank to convert an advance from one interest rate structure to another. When issuing convertible advances, the Bank may purchase put options from a member that allow the Bank to convert the fixed-rate advance to a variable-rate advance at the current market rate or another structure after an agreed-upon lockout period. A convertible advance carries a lower interest rate than a comparable-maturity, fixed-rate advance without the conversion feature. In addition, the Bank offers certain advances to members that provide a member the right, based upon predetermined exercise dates, to prepay the advance prior to maturity without incurring prepayment or termination fees (returnable advances).

At June 30, 2018 and December 31, 2017, the Bank did not have any advances with embedded features that met the requirements to separate the embedded feature from the host contract and designate the embedded feature as a stand-alone derivative.

The following table summarizes advances by the earlier of (i) year of contractual maturity or next call date and (ii) year of contractual maturity or next convertible date as of June 30, 2018 and December 31, 2017.

	Year of Contractual Maturity or Next Call Date				Year of Contractual Maturity or Next Convertible Date
(in thousands)	June 30, 2018		December 31, 2017		June 30, 2018		December 31, 2017
Due in 1 year or less	$	38,050,442	$	35,856,861	$	33,025,942	$	31,632,361
Due after 1 year through 2 years	13,061,672		11,771,189		13,871,172		11,780,689
Due after 2 years through 3 years	17,110,058		17,231,775		20,335,058		18,456,775
Due after 3 years through 4 years	5,460,173		7,445,920		6,470,173		10,445,920
Due after 4 years through 5 years	2,146,531		1,244,184		2,140,531		1,254,184
Thereafter	781,011		833,938		767,011		813,938
Total par value	$	76,609,887	$	74,383,867	$	76,609,887	$	74,383,867

Interest Rate Payment Terms.  The following table details interest rate payment terms for advances as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Fixed-rate – overnight	$	5,437,295	$	3,988,232
Fixed-rate – term:
Due in 1 year or less	17,731,754		15,998,268
Thereafter	18,302,045		14,685,606
Total fixed-rate	41,471,094		34,672,106
Variable-rate:
Due in 1 year or less	9,831,393		11,620,361
Thereafter	25,307,400		28,091,400
Total variable-rate	35,138,793		39,711,761
Total par value	$	76,609,887	$	74,383,867

Credit Risk Exposure and Security Terms. The Bank’s potential credit risk from advances is concentrated in commercial banks and savings institutions. As of June 30, 2018, the Bank had advances of $57.8 billion outstanding to the five largest borrowers, which represented 75.5% of total advances outstanding. Of these five, three had outstanding advance balances that were each in excess of 10% of the total portfolio at June 30, 2018.

As of December 31, 2017, the Bank had advances of $57.5 billion outstanding to the five largest borrowers, which represented 77.3% of total advances outstanding. Of these five, three had outstanding advance balances that were each in excess of 10% of the total portfolio at December 31, 2017.

See Note 8 for information related to the Bank's 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

Mortgage Loans Held for Portfolio

Under the MPF Program, the Bank invests in mortgage loans that it purchases from its participating members and housing associates. The Bank’s participating members originate, service, and credit enhance residential mortgage loans that are sold to the Bank. See Note 12 for further information regarding transactions with related parties.

The following table presents balances as of June 30, 2018 and December 31, 2017 for mortgage loans held for portfolio.

(in thousands)	June 30, 2018			December 31, 2017
Fixed-rate long-term single-family mortgages (1)	$	3,868,035		$	3,592,083
Fixed-rate medium-term single-family mortgages (1)	223,785			246,493
Total par value	4,091,820			3,838,576
Premiums	70,861			70,197
Discounts	(3,749		)	(3,418		)
Hedging adjustments	20,598			23,722
Total mortgage loans held for portfolio	$	4,179,530		$	3,929,077

Note:

⁽¹⁾ Long-term is defined as greater than 15 years. Medium-term is defined as a term of 15 years or less.

The following table details the par value of mortgage loans held for portfolio outstanding categorized by type as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Conventional loans	$	3,893,779	$	3,631,292
Government-guaranteed/insured loans	198,041		207,284
Total par value	$	4,091,820	$	3,838,576

See Note 8 - Allowance for Credit Losses for information related to the Bank's credit risk on mortgage loans and allowance for credit losses.

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Allowance for Credit Losses

6 Months Ended

Jun. 30, 2018

Loans and Leases Receivable Disclosure [Abstract]

Allowance for Credit Losses

Allowance for Credit Losses

The Bank has established an allowance methodology for each of the Bank’s portfolio segments: credit products, government-guaranteed or insured MPF loans held for portfolio, conventional MPF loans held for portfolio, and BOB loans.

Credit Products. The Bank manages its total credit exposure (TCE), which includes advances, letters of credit, advance commitments, and other credit product exposure, through an integrated approach. This approach generally requires a credit limit to be established 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 each borrower's need for a reliable source of funding. In addition, the Bank lends to its members in accordance with theFHLBankAct and Finance Agency regulations. Specifically, the FHLBank Act requires the Bank to obtain collateral to fully secure credit products. The estimated value of the collateral required to secure each member’s credit products is calculated by applying collateral weightings, or haircuts, to the value of the collateral. The Bank accepts cash, certain investment securities, residential mortgage loans, deposits, and other real estate related assets as collateral. In addition, Community Financial Institutions (CFIs) are eligible to utilize expanded statutory collateral provisions for small business, agriculture, and community development loans. The Bank’s capital stock owned by the borrowing member is pledged as secondary collateral. 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 require additional or substitute collateral to help ensure that credit products continue to be secured by adequate collateral. Management of the Bank believes that these policies effectively manage the Bank’s credit risk from credit products.

Based upon the financial condition of the member, the Bank either allows a member to retain physical possession of the collateral assigned to the Bank or requires the member to specifically deliver physical possession or control of the collateral to the Bank or its custodians. However, regardless of the member's financial condition, the Bank always takes possession or control of securities used as collateral. The Bank perfects its security interest in all pledged collateral. The FHLBank Act affords any security interest granted to the Bank by a member (or an affiliate of a member) priority over the claims or rights of any other party, except for claims or rights of a third party that would be otherwise entitled to priority under applicable law and that are held by a bona fide purchaser for value or by a secured party holding a prior perfected security interest.

Using a risk-based approach, the Bank considers the payment status, collateral types and concentration levels, and borrower’s financial condition to be indicators of credit quality on its credit products. At June 30, 2018 and December 31, 2017, the Bank had rights to collateral on a member-by-member basis with a value in excess of its outstanding extensions of credit.

The Bank continues to evaluate and, as necessary, make changes to its collateral guidelines based on current market conditions. At June 30, 2018 and December 31, 2017, the Bank did not have any credit products that were past due, on nonaccrual status, or considered impaired. In addition, the Bank did not have any credit products considered to be troubled debt restructurings (TDRs).

Based upon the collateral held as security, its credit extension policies, collateral policies, management’s credit analysis and the repayment history on credit products, the Bank has not incurred any credit losses on credit products since inception. Accordingly, the Bank has not recorded any allowance for credit losses for these products.

BOB Loans. Both the probability of default and loss given default are determined and used to estimate the allowance for credit losses on BOB loans. Loss given default is considered to be 100% due to the fact that the BOB program has no collateral or credit enhancements. The probability of default is based on the actual performance of the BOB program. The Bank considers BOB loans that are delinquent to be nonperforming assets. The allowance for credit losses on BOB loans was immaterial as of June 30, 2018 and December 31, 2017 and is not included in any of the tables that follow.

TDRs - BOB Loans. The Bank offers a BOB loan deferral, which the Bank considers a TDR. A deferred BOB loan is not required to pay principal or accrue interest for a period up to one year. The credit loss is measured by factoring expected shortfalls incurred as of the reporting date. BOB loan TDRs are not material to the Bank’s financial condition, results of operations, or cash flows.

MortgageLoans- Government-Guaranteed or Insured. The Bank invests in government-guaranteed or insured fixed-rate mortgage loans secured by one-to-four family residential properties. Government-guaranteed mortgage loans are those insured or guaranteed by the Federal Housing Administration (FHA), Department of Veterans Affairs (VA), the Rural Housing Service (RHS) of the Department of Agriculture and/or by Housing and Urban Development (HUD). Any losses from such loans are expected to be recovered from those entities. If not, losses from such loans must be contractually absorbed by the servicers. Therefore, there is no allowance for credit losses on government-guaranteed or insured mortgage loans.

Mortgage Loans - Conventional MPF. The allowances for conventional loans are determined by analyses that include consideration of various data observations such as past performance, current performance, loan portfolio characteristics, collateral-related characteristics, industry data, and prevailing economic conditions. The measurement of the allowance for credit losses includes: (1) reviewing all residential mortgage loans at the individual master commitment level; (2) reviewing specifically identified collateral-dependent loans for impairment; and/or (3) reviewing homogeneous pools of residential mortgage loans.

The Bank’s allowance for credit losses takes into consideration the credit enhancement (CE) associated with conventional mortgage loans under the MPF Program. Specifically, the determination of the allowance generally considers expected Primary Mortgage Insurance (PMI), Supplemental Mortgage Insurance (SMI), and other CE amounts. Any incurred losses that are expected to be recovered from the CE reduce the Bank’s allowance for credit losses.

For conventional MPF loans, credit losses that are not fully covered by PMI are allocated to the Bank up to an agreed-upon amount, referred to as the first loss account (FLA). The FLA functions as a tracking mechanism for determining the point after which the participating financial institution (PFI) is required to cover losses. The Bank pays the PFI a fee, a portion of which may be based on the credit performance of the mortgage loans, in exchange for absorbing the second layer of losses up to an agreed-upon CE amount. The CE amount may be a direct obligation of the PFI and/or an SMI policy paid for by the PFI, and may include performance-based fees which can be withheld to cover losses allocated to the Bank (referred to as recaptured CE fees). The PFI is required to pledge collateral to secure any portion of its CE amount that is a direct obligation. A receivable which is assessed for collectability is generally established for losses expected to be recovered by withholding CE fees. Estimated losses exceeding the CE, if any, are incurred by the Bank. At June 30, 2018 and December 31, 2017, the MPF exposure under the FLA was $27.7 million and $26.3 million, respectively. The Bank records CE fees paid to PFIs as a reduction to mortgage loan interest income. The Bank incurred CE fees of $1.1 million and $0.9 million for the second quarter 2018 and 2017, and $2.2 million and $1.8 million for the six months endedJune 30,2018 and 2017, respectively.

Individually Evaluated Mortgage Loans. The Bank evaluates certain conventional mortgage loans for impairment individually. This includes impaired loans considered collateral-dependent loans where repayment is expected to be provided by the sale of the underlying property, which primarily consists of MPF loans that are 180 days or more delinquent, TDRs and other loans where the borrower has filed for bankruptcy.

The estimated credit losses on impaired collateral-dependent loans are separately determined because sufficient information exists to make a reasonable estimate of the inherent loss for such loans on an individual basis. The incurred loss on each loan is equal to the difference between the carrying value of the loan and the estimated fair value of the collateral less estimated selling costs and recovery through PMI. The estimated fair value is determined based on a value provided by a third party's retail-based Automated Valuation Model (AVM). The Bank adjusts the AVM based on the amount it has historically received on liquidations. The resulting loss is reduced by available CE. The estimated credit loss on individually evaluated MPF loans is charged-off against the reserve. However, if the estimated loss can be recovered through CE, a receivable is established, resulting in a net charge-off. The CE receivable is evaluated for collectibility, and a reserve, included as part of the allowance for credit losses, is established if required.

Collectively Evaluated Mortgage Loans. For the remainder of the portfolio, the Bank evaluates the homogeneous mortgage loan portfolio collectively for impairment. The allowance for credit loss methodology for mortgage loans considers loan pool specific attribute data, applies loss severities and incorporates the CEs of the MPF Program and PMI. The probability of default and loss given default are based on the actual 12-month historical performance of the Bank’s mortgage loans. Actual probability of default was determined by applying migration analysis to categories of mortgage loans (current, 30 days past due, 60 days past due, and 90 days past due). Actual loss given default was determined based on realized losses incurred on the sale of mortgage loan collateral over the previous 12 months. The resulting estimated losses are reduced by the CEs the Bank expects to be eligible to receive. The CEs are contractually set and calculated by a master commitment agreement between the Bank and the PFI. Losses in excess of the CEs are incurred by the Bank.

Rollforward of Allowance for Credit Losses -Mortgage Loans - Conventional MPF.

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Balance, beginning of period	$	8,241		$	6,204		$	5,954		$	6,231
(Charge-offs) Recoveries, net (1)	(415		)	209			(406		)	(10		)
Provision (benefit) for credit losses	228			(72		)	2,506			120
Balance, June 30	$	8,054		$	6,341		$	8,054		$	6,341

Notes:

⁽¹⁾ Net charge-offs that the Bank does not expect to recover through CE receivable.

Allowances for Credit Losses and Recorded Investment by Impairment Methodology - Mortgage Loans - Conventional MPF.

(in thousands)	June 30, 2018		December 31, 2017
Ending balance, individually evaluated for impairment	$	6,867	$	5,218
Ending balance, collectively evaluated for impairment	1,187		736
Total allowance for credit losses	$	8,054	$	5,954
Recorded investment balance, end of period:
Individually evaluated for impairment, with or without a related allowance	$	49,437	$	52,505
Collectively evaluated for impairment	3,946,534		3,682,167
Total recorded investment	$	3,995,971	$	3,734,672

Credit Quality Indicators -Mortgage Loans.Key credit quality indicators include the migration of past due loans, nonaccrual loans, loans in process of foreclosure, and impaired loans.

(in thousands)	June 30, 2018
Recorded investment: (1)	Conventional MPF Loans			Government-Guaranteed or Insured Loans (2)			Total
Past due 30-59 days	$	33,816		$	8,911		$	42,727
Past due 60-89 days	6,935			1,638			8,573
Past due 90 days or more	12,580			3,831			16,411
Total past due loans	$	53,331		$	14,380		$	67,711
Total current loans	3,942,640			190,484			4,133,124
Total loans	$	3,995,971		$	204,864		$	4,200,835
Other delinquency statistics:
In process of foreclosures, included above (3)	$	6,452		$	1,143		$	7,595
Serious delinquency rate (4)	0.3		%	1.9		%	0.4		%
Past due 90 days or more still accruing interest	$	—		$	3,831		$	3,831
Loans on nonaccrual status	$	15,530		$	—		$	15,530

(in thousands)	December 31, 2017
Recorded investment: (1)	Conventional MPF Loans			Government-Guaranteed or Insured Loans (2)			Total
Past due 30-59 days	$	39,677		$	11,390		$	51,067
Past due 60-89 days	7,039			2,887			9,926
Past due 90 days or more	17,738			4,959			22,697
Total past due loans	$	64,454		$	19,236		$	83,690
Total current loans	3,670,218			195,382			3,865,600
Total loans	$	3,734,672		$	214,618		$	3,949,290
Other delinquency statistics:
In process of foreclosures, included above (3)	$	9,978		$	1,055		$	11,033
Serious delinquency rate (4)	0.5		%	2.3		%	0.6		%
Past due 90 days or more still accruing interest	$	—		$	4,959		$	4,959
Loans on nonaccrual status	$	20,695		$	—		$	20,695

Notes:

⁽¹⁾ The recorded investment in a loan is the unpaid principal balance, adjusted for charge-offs of estimated losses, accrued interest, net deferred loan fees or costs, unamortized premiums, unaccreted discounts and adjustments for hedging. The recorded investment is not net of any valuation allowance.

⁽²⁾ The Bank has not recorded any allowance for credit losses on government-guaranteed or -insured mortgage loans at June 30, 2018, and December 31, 2017.

⁽³⁾ 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 dependent on their delinquency status.

⁽⁴⁾ Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total loan portfolio class.

Individually Evaluated Impaired Loans -Mortgage Loans. Information regarding individually evaluated impaired loans is as follows. As indicated above, these loans include impaired loans considered collateral-dependent.

	June 30, 2018
(in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance for Credit Losses
With no related allowance:
Conventional MPF loans	$	30,001	$	29,657	$	—
With a related allowance:
Conventional MPF loans	19,436		19,158		6,867
Total:
Conventional MPF loans	$	49,437	$	48,815	$	6,867

	December 31, 2017
(in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance for Credit Losses
With no related allowance:
Conventional MPF loans	$	30,824	$	30,497	$	—
With a related allowance:
Conventional MPF loans	21,681		21,360		5,218
Total:
Conventional MPF loans	$	52,505	$	51,857	$	5,218

TDRs - Mortgage Loans - Conventional MPF. TDRs are considered to have occurred when a concession is granted to the debtor that would not have been considered had it not been for economic or legal reasons related to the debtor's financial difficulties. The Bank offers a loan modification program for its MPF Program. The loans modified under this program are considered TDRs. The Bank also considers a TDR to have occurred when a borrower files for Chapter 7 bankruptcy, the bankruptcy court discharges the borrower’s obligation, and the borrower does not reaffirm the debt.The recorded investment in mortgage loans classified as TDRs was $10.6 million and $11.1 million as of June 30, 2018 and December 31, 2017, respectively. The financial amounts related to TDRs are not material to the Bank’s financial condition, results of operations, or cash flows.

Real Estate Owned (REO). The Bank had $3.3 million and $3.9 million of REO reported in Other assets on the Statement of Condition at June 30, 2018 and December 31, 2017, respectively.

Purchases, Sales and Reclassifications. During the six months ended June 30, 2018 and 2017, there were no significant purchases or sales of financing receivables. Furthermore, none of the financing receivables were reclassified to held-for-sale.

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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

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 interest-bearing liabilities that finance these assets. 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 that include guidelines on the amount of exposure to interest rate changes it is willing to accept. In addition, the Bank monitors the risk to its interest income, net interest margin and average maturity of interest-earning assets and interest-bearing liabilities. For additional information on the Bank's derivative transactions, see Note 11 - Derivatives and Hedging Activities to the audited financial statements in the Bank's 2017 Form 10-K.

Derivative transactions may be executed either with a counterparty (referred to as uncleared derivatives) or cleared through a Futures Commission Merchant (i.e., clearing agent) with a Derivatives Clearing Organization (referred to as cleared derivatives). Once a derivative transaction has been accepted for clearing by a Derivative Clearing Organization (Clearing House), the executing counterparty is replaced with the Clearing House. The Bank is not a derivatives dealer and does not trade derivatives for short-term profit. The Bank transacts uncleared derivatives with large banks and major broker-dealers. Some of these banks and broker-dealers or their affiliates buy, sell, and distribute consolidated obligations.

Financial Statement Effect and Additional Financial Information. The following tables summarize the notional amount and fair value of derivative instruments and total derivatives 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.

	June 30, 2018
(in thousands)	Notional Amount of Derivatives		Derivative Assets		Derivative Liabilities
Derivatives designated as hedging instruments:
Interest rate swaps	$	35,917,784	$	2,323	$	72,707
Derivatives not designated as hedging instruments:
Interest rate swaps	$	10,497,743	$	12,906	$	32,184
Interest rate caps or floors	6,485,000		3,057		—
Mortgage delivery commitments	35,814		39		22
Total derivatives not designated as hedging instruments:	$	17,018,557	$	16,002	$	32,206
Total derivatives before netting and collateral adjustments	$	52,936,341	$	18,325	$	104,913
Netting adjustments and cash collateral (1)			97,208		(89,886		)
Derivative assets and derivative liabilities as reported on the Statement of   Condition			$	115,533	$	15,027

	December 31, 2017 (2)
(in thousands)	Notional Amount of Derivatives		Derivative Assets		Derivative Liabilities
Derivatives designated as hedging instruments:
Interest rate swaps	$	30,017,995	$	4,185	$	45,302
Derivatives not designated as hedging instruments:
Interest rate swaps	$	8,285,437	$	3,727	$	17,423
Interest rate caps	6,455,000		1,464		—
Mortgage delivery commitments	25,487		4		61
Total derivatives not designated as hedging instruments:	$	14,765,924	$	5,195	$	17,484
Total derivatives before netting and collateral adjustments	$	44,783,919	$	9,380	$	62,786
Netting adjustments and cash collateral (1)			71,376		(43,265		)
Derivative assets and derivative liabilities as reported on the Statement of   Condition			$	80,756	$	19,521

Note:

⁽¹⁾ Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions, cash collateral and related accrued interest held or placed with the same clearing agent and/or counterparties. Cash collateral posted and related accrued interest was $188.0 million and $114.6 million at June 30, 2018 and December 31, 2017, respectively. Cash collateral received was immaterial for both June 30, 2018 and December 31, 2017.

⁽²⁾ To conform with current presentation, $11.2 million of variation margin received from the Clearing House has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

The following table presents the components of net gains (losses) on derivatives and hedging activities as presented in the Statement of Income.

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Derivatives designated as hedging instruments:
Interest rate swaps (1)	$	(1,780	)	$	(455	)	$	(579	)	$	203
Derivatives not designated as hedging instruments:
Economic hedges:
Interest rate swaps	$	10,339		$	(848	)	$	16,136		$	4,340
Interest rate caps or floors	296			(2,069		)	1,273			(2,645		)
Net interest settlements	(3,576		)	(745		)	(6,159		)	(1,609		)
Mortgage delivery commitments	(444		)	(390		)	(1,336		)	(427		)
Other	4			4			12			10
Total net gains (losses) related to derivatives not designated as hedging instruments	$	6,619		$	(4,048	)	$	9,926		$	(331	)
Other - price alignment amount on derivatives for which variation margin is characterized as a daily settled contract	(780		)	208			(1,176		)	263
Net gains (losses) on derivatives and hedging activities	$	4,059		$	(4,295	)	$	8,171		$	135

Note:

⁽¹⁾Pertains to totalnet gains (losses) for fair value hedge ineffectiveness.

The following tables present, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships and the impact of those derivatives on the Bank’s net interest income for the three and six months ended June 30, 2018 and 2017.

(in thousands)	Gains/(Losses) on Derivative			Gains/(Losses) on Hedged Item			Net Fair Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Three months ended June 30, 2018
Hedged item type:
Advances	$	42,622		$	(42,410	)	$	212		$	10,648
Consolidated obligations – bonds	(6,685		)	3,961			(2,724		)	(23,524		)
AFS securities	13,243			(12,511		)	732			(908		)
Total	$	49,180		$	(50,960	)	$	(1,780	)	$	(13,784	)
Six months ended June 30, 2018
Hedged item type:
Advances	$	166,415		$	(165,953	)	$	462		$	7,839
Consolidated obligations – bonds	(96,457		)	92,864			(3,593		)	(31,307		)
AFS securities	53,895			(51,343		)	2,552			(3,592		)
Total	$	123,853		$	(124,432	)	$	(579	)	$	(27,060	)

(in thousands)	Gains/(Losses) on Derivative			Gains/(Losses) on Hedged Item			Net Fair Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Three months ended June 30, 2017
Hedged item type:
Advances	$	(20,918	)	$	20,815		$	(103	)	$	(7,989	)
Consolidated obligations – bonds	23,457			(23,001		)	456			2,478
AFS securities	(13,686		)	12,878			(808		)	(4,368		)
Total	$	(11,147	)	$	10,692		$	(455	)	$	(9,879	)
Six months ended June 30, 2017
Hedged item type:
Advances	$	(5,005	)	$	4,898		$	(107	)	$	(17,963	)
Consolidated obligations – bonds	12,306			(11,325		)	981			8,827
AFS securities	(7,411		)	6,740			(671		)	(9,273		)
Total	$	(110	)	$	313		$	203		$	(18,409	)

Note:

⁽¹⁾ Represents the net interest settlements on derivatives in fair value hedge relationships presented in the interest income/expense line item of the respective hedged item. These amounts do not include $(1.1) million and $(0.9) million for the second quarter of 2018 and 2017, respectively, and $(1.7) million and $(1.6) million for the six months endedJune 30, 2018 and 2017, respectively, of amortization/accretion of the basis adjustment related to discontinued fair value hedging relationships.

The Bank had no active cash flow hedging relationships during the first six months of 2018 or 2017.

Managing Credit Risk on Derivatives. The Bank is subject to credit risk due to the risk of nonperformance by counterparties to its derivative transactions. The Bank manages counterparty credit risk through credit analysis, collateral requirements, and adherence to the requirements set forth in its policies, U.S. Commodity Futures Trading Commission regulations, and Finance Agency regulations.

Uncleared Derivatives. For uncleared derivatives, the degree of credit risk depends on the extent to which netting arrangements are included in such contracts to mitigate the risk. The Bank requires collateral agreements with collateral delivery thresholds on all uncleared derivatives.

Generally, the Bank is subject to certain ISDA agreements for uncleared derivatives that require the Bank to post additional collateral with its counterparties if there is deterioration in the Bank's credit rating and the net liability position exceeds the relevant threshold. If the Bank’s credit rating were to be lowered by a major credit rating agency, the Bank would 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 that require the Bank to deliver additional collateral due to a credit downgrade and were in a net liability position (before cash collateral and related accrued interest) at June 30, 2018 was $11.0 million for which the Bank has posted cash collateral of $2.7 million. If the Bank’s credit rating had been lowered one notch (i.e., from its current rating to the next lower rating), the Bank would have been required to deliver up to an additional $6.7 million of collateral to its derivative counterparties at June 30, 2018.

Cleared Derivatives. For cleared derivatives, Derivative Clearing Organizations (Clearing Houses) are the Bank's counterparties. The Clearing House notifies the clearing agent of the required initial and variation margin. The requirement that the Bank post initial margin and exchange variation margin settlement payments through the clearing agent, which notifies the Bank on behalf of the Clearing Houses, exposes the Bank to institutional credit risk in the event that the clearing agent or the Clearing Houses fail to meet their respective obligations. The use of cleared derivatives is intended to mitigate credit risk exposure through the use of a central counterparty instead of individual counterparties. Collateral postings and variation margin settlement payments are made daily, through a clearing agent, for changes in the value of cleared derivatives. Initial margin is the amount calculated based on anticipated exposure to future changes in the value of a swap and protects the Clearing Houses from market risk in the event of default by one of their respective clearing agents. Variation margin is paid daily to settle the exposure arising from changes in the market value of the position. The Bank uses CME Clearing as the Clearing House for all cleared derivative transactions. Variation margin payments are characterized as daily settlement payments, rather than collateral. Initial margin is considered cash collateral.

Based on credit analyses and collateral requirements, the Bank does not anticipate credit losses related to its derivative agreements. See Note 13 - Estimated Fair Values for discussion regarding the Bank's fair value methodology for derivative assets and liabilities, including an evaluation of the potential for the fair value of these instruments to be affected by counterparty credit risk.

For cleared derivatives, the Clearing House 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 by its clearing agents to post additional initial margin at June 30, 2018.

Offsetting of Derivative Assets and Derivative Liabilities. When it has met the netting requirements, theBank presents derivative instruments, related cash collateral received or pledged, and associated accrued interest on a net basis by clearing agent and/or by counterparty. The Bank has analyzed the enforceability of offsetting rights incorporated in its cleared derivative transactions and 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 Clearing Houses or the Bank’s clearing agent, or both. Based on this analysis, the Bank nets derivative fair values on all of its transactions through a particular clearing agent with a particular Clearing House (including settled variation margin) into one net asset or net liability exposure.  Initial margin posted to the clearing house is presented as a derivative asset.

The following tables present separately the fair value of derivative instruments meeting or not meeting netting requirements. Gross recognized amounts do not include the related collateral received from or pledged to counterparties. Net amounts reflect the adjustments of collateral received from or pledged to counterparties.

	Derivative Assets
(in thousands)	June 30, 2018			December 31, 2017 (2)
Derivative instruments meeting netting requirements:
Gross recognized amount:
Uncleared derivatives	$	17,489		$	5,875
Cleared derivatives	797			3,501
Total gross recognized amount	18,286			9,376
Gross amounts of netting adjustments and cash collateral
Uncleared derivatives	(14,575		)	(5,246		)
Cleared derivatives	111,783			76,622
Total gross amounts of netting adjustments and cash collateral	97,208			71,376
Net amounts after netting adjustments and cash collateral
Uncleared derivatives	2,914			629
Cleared derivatives	112,580			80,123
Total net amounts after netting adjustments and cash collateral	115,494			80,752
Derivative instruments not meeting netting requirements: (1)
Uncleared derivatives	39			4
Cleared derivatives	—			—
Total derivative instruments not meeting netting requirements:	39			4
Total derivative assets:
Uncleared derivatives	2,953			633
Cleared derivatives	112,580			80,123
Total derivative assets as reported in the Statement of Condition	115,533			80,756
Net unsecured amount:
Uncleared derivatives	2,953			633
Cleared derivatives	112,580			80,123
Total net unsecured amount	$	115,533		$	80,756

	Derivative Liabilities
(in thousands)	June 30, 2018			December 31, 2017 (2)
Derivative instruments meeting netting requirements:
Gross recognized amount:
Uncleared derivatives	$	99,472		$	47,315
Cleared derivatives	5,419			15,409
Total gross recognized amount	104,891			62,724
Gross amounts of netting adjustments and cash collateral
Uncleared derivatives	(89,089		)	(39,063		)
Cleared derivatives	(797		)	(4,202		)
Total gross amounts of netting adjustments and cash collateral	(89,886		)	(43,265		)
Net amounts after netting adjustments and cash collateral
Uncleared derivatives	10,383			8,252
Cleared derivatives	4,622			11,207
Total net amounts after netting adjustments and cash collateral	15,005			19,459
Derivative instruments not meeting netting requirements: (1)
Uncleared derivatives	22			62
Cleared derivatives	—			—
Total derivative instruments not meeting netting requirements:	22			62
Total derivative liabilities
Uncleared derivatives	10,405			8,314
Cleared derivatives	4,622			11,207
Total derivative liabilities as reported in the Statement of Condition	15,027			19,521
Net unsecured amount:
Uncleared derivatives	10,405			8,314
Cleared derivatives	4,622			11,207
Total net unsecured amount	$	15,027		$	19,521

Note:

⁽¹⁾ Represents derivatives that are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments).

⁽²⁾ To conform with current presentation, $11.2 million of variation margin received from the Clearing House for daily settled contracts has been allocated to the individual instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

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Consolidated Obligations

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Consolidated Obligations

Consolidated Obligations

Consolidated obligations consist of consolidated bonds and consolidated discount notes.The FHLBanks issue consolidated obligations through the OF as their agent. In connection with each debt issuance, each FHLBank specifies the amount of debt it wants to have issued on its behalf. The Bank records as a liability its specific portion of consolidated obligations for which it is the primary obligor.

Although the Bank is primarily liable for its portion of consolidated obligations, the Bank is also jointly and severally liable with the other ten FHLBanks for the payment of principal and interest on all consolidated obligations of each of the FHLBanks. The Finance Agency, at its discretion, may require any FHLBank to make principal or interest payments due on any consolidated obligations whether or not the consolidated obligation represents a primary liability of such FHLBank.

Although an FHLBank has never paid the principal or interest payments due on a consolidated obligation on behalf of another FHLBank, if one FHLBank is required to make such payments, Finance Agency regulations provide that the paying FHLBank is entitled to reimbursement from the non-complying FHLBank for any payments made on its behalf and other associated costs including interest to be determined by the Finance Agency. If the Finance Agency determines that the non-complying FHLBank is unable to satisfy its repayment obligations, then the Finance Agency may allocate the outstanding liabilities of the non-complying FHLBank among the remaining FHLBanks on a pro rata basis in proportion to each FHLBank’s participation in all consolidated obligations outstanding. However, the Finance Agency reserves the right to allocate the outstanding liabilities for the consolidated obligations among the FHLBanks in any other manner it may determine to ensure that the FHLBanks operate in a safe and sound manner. The par amounts of the FHLBanks’ outstanding consolidated obligations were$1,059.9 billionand$1,034.3 billion atJune 30, 2018andDecember 31, 2017, respectively.

Additional detailed information regarding consolidated obligations including general terms and interest rate payment terms can be found in Note 14 to the audited financial statements in the Bank's 2017 Form 10-K.

The following table details interest rate payment terms for the Bank's consolidated obligation bonds as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018			December 31, 2017
Par value of consolidated bonds:
Fixed-rate	$	27,184,715		$	26,714,743
Step-up	1,850,000			1,675,000
Floating-rate	39,432,850			28,837,500
Conversion bonds - fixed to floating	390,000			390,000
Total par value	68,857,565			57,617,243
Bond premiums	67,714			65,198
Bond discounts	(9,144		)	(7,927		)
Concession fees	(6,971		)	(6,417		)
Hedging adjustments	(227,297		)	(134,375		)
Total book value	$	68,681,867		$	57,533,722

Maturity Terms. The following table presents a summary of the Bank’s consolidated obligation bonds outstanding by year of contractual maturity as of June 30, 2018 and December 31, 2017.

	June 30, 2018				December 31, 2017
(dollars in thousands) Year of Contractual Maturity	Amount		Weighted Average Interest Rate		Amount		Weighted Average Interest Rate
Due in 1 year or less	$	42,085,735	1.87	%	$	28,357,115	1.33	%
Due after 1 year through 2 years	14,755,600		1.89		17,184,710		1.44
Due after 2 years through 3 years	3,647,270		1.98		4,062,040		1.78
Due after 3 years through 4 years	2,400,795		2.27		2,357,115		2.11
Due after 4 years through 5 years	1,820,315		2.43		1,701,520		2.12
Thereafter	4,147,850		2.59		3,937,150		2.41
Index amortizing notes	—		—		17,593		5.39
Total par value	$	68,857,565	1.95	%	$	57,617,243	1.53	%

The following table presents the Bank’s consolidated obligation bonds outstanding between noncallable and callable as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Noncallable	$	62,535,565	$	52,328,243
Callable	6,322,000		5,289,000
Total par value	$	68,857,565	$	57,617,243

The following table presents consolidated obligation bonds outstanding by the earlier of contractual maturity or next call date as of June 30, 2018 and December 31, 2017.

(in thousands) Year of Contractual Maturity or Next Call Date	June 30, 2018		December 31, 2017
Due in 1 year or less	$	48,222,735	$	33,384,115
Due after 1 year through 2 years	14,040,600		17,061,710
Due after 2 years through 3 years	2,915,270		3,587,040
Due after 3 years through 4 years	1,692,795		1,477,115
Due after 4 years through 5 years	1,112,315		1,236,520
Thereafter	873,850		853,150
Index amortizing notes	—		17,593
Total par value	$	68,857,565	$	57,617,243

Consolidated Obligation Discount Notes. Consolidated obligation discount notes are issued to raise short-term funds. Discount notes are consolidated obligations with original maturities up to one year. These notes are issued at less than their face amount and redeemed at par value when they mature. The following table details the Bank’s consolidated obligation discount notes as of June 30, 2018 and December 31, 2017.

(dollars in thousands)	June 30, 2018			December 31, 2017
Book value	$	26,988,892		$	36,193,289
Par value	27,060,905			36,253,187
Weighted average interest rate (1)	1.89		%	1.24		%

Note:

⁽¹⁾ Represents an implied rate.

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Capital

6 Months Ended

Jun. 30, 2018

Capital [Abstract]

Capital

Capital

The Bank is subject to three capital requirements under its current Capital Plan Structure and the Finance Agency rules and regulations: (1) risk-based capital; (2) total regulatory capital; and (3) leverage capital. Regulatory capital does not include AOCI, but does include mandatorily redeemable capital stock. See details regarding these requirements and the Bank’s Capital Plan in Note 16 to the audited financial statements in the Bank’s 2017 Form 10-K. At June 30, 2018, the Bank was in compliance with all regulatory capital requirements.

The Bank has two subclasses of capital stock: B1 membership stock and B2 activity stock. The Bank had $0.4 billion and $3.6 billion in B1 membership stock and B2 activity stock, respectively, at June 30, 2018. The Bank had $0.4 billion and $3.3 billion in B1 membership stock and B2 activity stock, respectively, at December 31, 2017.

The following table demonstrates the Bank’s compliance with the regulatory capital requirements at June 30, 2018 and December 31, 2017.

	June 30, 2018						December 31, 2017
(dollars in thousands)	Required			Actual			Required			Actual
Regulatory capital requirements:
RBC	$	1,350,377		$	5,170,681		$	1,052,052		$	4,821,638
Total capital-to-asset ratio	4.0		%	5.1		%	4.0		%	4.8		%
Total regulatory capital	4,072,573			5,170,681			3,986,520			4,821,638
Leverage ratio	5.0		%	7.6		%	5.0		%	7.3		%
Leverage capital	5,090,716			7,756,021			4,983,150			7,232,457

When the Finance Agency implemented the prompt corrective action provisions of the Housing and Economic Recovery Act of 2008 (Housing Act), it established four capital classifications for the FHLBanks: adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized. On June 7, 2018, the Bank received final notification from the Finance Agency that it was considered "adequately capitalized" for the quarter ended March 31, 2018. As of the date of this filing, the Bank has not received final notice from the Finance Agency regarding its capital classification for the quarter ended June 30, 2018.

Capital Concentrations. The following tables present member holdings of 10% or more of the Bank’s total capital stock, including mandatorily redeemable capital stock, outstanding as of June 30, 2018 and December 31, 2017.

(dollars in thousands)	June 30, 2018
Member (1)	Capital Stock		% of Total
PNC Bank, N.A., Pittsburgh, PA	$	1,108,150	28.0	%
Ally Bank, Midvale, UT	789,532		20.0
Chase Bank USA, N.A., Wilmington, DE	505,029		12.8

(dollars in thousands)	December 31, 2017
Member (1)	Capital Stock		% of Total
PNC Bank, N.A., Pittsburgh, PA	$	910,400	24.8	%
Ally Bank, Midvale, UT	745,387		20.3
Chase Bank USA, N.A., Wilmington, DE	589,254		16.1

Note:

⁽¹⁾ For Bank membership purposes, the principal place of business for PNC Bank is Pittsburgh, PA. For Ally Bank, the principal place of business is Horsham, PA.

Mandatorily Redeemable Capital Stock. The Bank is a cooperative whose member financial institutions and former members own all of the relevant Bank's issued and outstanding capital stock. Shares cannot be purchased or sold except between the Bank and its members at the shares' par value of $100, as mandated by the Bank's capital plan.

At June 30, 2018 and December 31, 2017, the Bank had $4.5 million and $5.1 million, respectively, in capital stock subject to mandatory redemption with payment subject to a five-year waiting period and the Bank meeting its minimum regulatory capital requirements. Estimated dividends on mandatorily redeemable capital stock recorded as interest expense were immaterial during the three and six months ended June 30, 2018 and 2017.

The following table provides the related dollar amounts for activities recorded in mandatorily redeemable capital stock during the six months ended June 30, 2018 and 2017.

	Six months ended June 30,
(in thousands)	2018			2017
Balance, beginning of the period	$	5,113		$	5,216
Capital stock subject to mandatory redemption reclassified from capital	17			269
Redemption/repurchase of mandatorily redeemable stock	(600		)	(466		)
Balance, end of the period	$	4,530		$	5,019

As of June 30, 2018, the total mandatorily redeemable capital stock reflected the balance for five institutions. Four institutions were merged out of district and are considered to be non-members. One other institution has notified the Bank of its intention to voluntarily redeem its capital stock and withdraw from membership. This institution will continue to be a member of the Bank until the withdrawal period is completed.

The following table shows the amount of mandatorily redeemable capital stock by contractual year of redemption at June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Due in 1 year or less	$	326	$	—
Due after 1 year through 2 years	—		342
Due after 2 years through 3 years	3,982		4,256
Due after 3 years through 4 years	—		—
Due after 4 years through 5 years	222		515
Total	$	4,530	$	5,113

Under the terms of the Bank’s Capital Plan, membership capital stock is redeemable five years from the date of membership termination or withdrawal notice from the member. If the membership is terminated due to a merger or consolidation, the membership capital stock is deemed to be excess stock and is repurchased. The activity capital stock (i.e., supporting advances, letters of credit and MPF) relating to termination, withdrawal, mergers or consolidation is recalculated based on the underlying activity. Any excess activity capital stock is repurchased on an ongoing basis as part of the Bank’s excess stock repurchase program that is in effect at the time. Therefore, the redemption period could be less than five years if the stock becomes excess stock. However, the redemption period could extend beyond five years if the underlying activity is still outstanding.

Dividends and Retained Earnings. Each FHLBank is required to contribute 20% of its net income each quarter to a restricted retained earnings (RRE) account until the balance of that account equals at least 1% of that FHLBank's average balance of outstanding consolidated obligations for the previous quarter. These RRE will not be available to pay dividends. At June 30, 2018, retained earnings were $1,215.7 million, including $899.1 million of unrestricted retained earnings and $316.6 million of RRE.

The Finance Agency has issued regulatory guidance to the FHLBanks relating to capital management and retained earnings. The guidance directs each FHLBank to assess, at least annually, the adequacy of its retained earnings with consideration given to future possible financial and economic scenarios. The guidance also outlines the considerations that each FHLBank should undertake in assessing the adequacy of the Bank’s retained earnings. The Bank’s retained earnings policy and capital adequacy metric utilize this guidance.

Dividends paid by the Bank are subject to Board approval and may be paid in either capital stock or cash; historically, the Bank has paid cash dividends only. Dividends are based on stockholders' average balances for the previous quarter. Dividends paid through the first and second quarters of 2018 and 2017 are presented in the table below.

	Dividend - Annual Yield
	2018		2017
	Membership	Activity	Membership	Activity
February	3.5%	6.75%	2.0%	5.0%
April	3.5%	6.75%	2.0%	5.0%

In July 2018, the Bank paid a quarterly dividend equal to an annual yield of 6.75% and 3.5% on activity and membership stock, respectively.

The following table summarizes the changes in AOCI for the three months ended June 30, 2018 and 2017.

(in thousands)	Net Unrealized Gains(Losses) on AFS		Non-credit OTTI Gains(Losses) on AFS			Non-credit OTTI Gains(Losses) on HTM		Net Unrealized Gains (Losses) on Hedging Activities			Pension and Post-Retirement Plans			Total
March 31, 2017	$	18,540	$	65,801		$	—	$	216		$	(2,430	)	$	82,127
Other comprehensive income (loss) before reclassification:
Net unrealized gains	31,654		8,766			—		—			—			40,420
Net change in fair value of OTTI securities	—		(437		)	—		—			—			(437		)
Reclassifications from OCI to net income:
Amortization on hedging activities	—		—			—		(4		)	—			(4		)
Pension and post-retirement	—		—			—		—			86			86
June 30, 2017	$	50,194	$	74,130		$	—	$	212		$	(2,344	)	$	122,192
March 31, 2018	$	26,595	$	73,128		$	—	$	192		$	(3,279	)	$	96,636
Other comprehensive income (loss) before reclassification:
Net unrealized gains	714		3,149			—		—			—			3,863
Reclassifications from OCI to net income:
Non-credit OTTI to credit OTTI	—		80			—		—			—			80
Amortization on hedging activities	—		—			—		(4		)	—			(4		)
Pension and post-retirement	—		—			—		—			176			176
June 30, 2018	$	27,309	$	76,357		$	—	$	188		$	(3,103	)	$	100,751

The following table summarizes the changes in AOCI for the six months ended June 30, 2018 and 2017.

(in thousands)	Net Unrealized Gains(Losses) on AFS			Non-credit OTTI Gains(Losses) on AFS			Non-credit OTTI Gains(Losses) on HTM		Net Unrealized Gains (Losses) on Hedging Activities			Pension and Post-Retirement Plans			Total
December 31, 2016	$	(12,835	)	$	67,424		$	—	$	223		$	(2,516	)	$	52,296
Other comprehensive income (loss) before reclassification:
Net unrealized gains (losses)	63,029			7,680			—		—			—			70,709
Net change in fair value of OTTI securities	—			(1,638		)	—		—			—			(1,638		)
Reclassifications from OCI to net income:
Noncredit OTTI to credit OTTI	—			664			—		—			—			664
Amortization on hedging activities	—			—			—		(11		)	—			(11		)
Pension and post-retirement	—			—			—		—			172			172
June 30, 2017	$	50,194		$	74,130		$	—	$	212		$	(2,344	)	$	122,192
December 31, 2017	$	41,210		$	72,953		$	—	$	200		$	(3,399	)	$	110,964
Other comprehensive income (loss) before reclassification:
Net unrealized gains (losses)	(13,901		)	3,062			—		—			—			(10,839		)
Reclassifications from OCI to net income:
Noncredit OTTI to credit OTTI	—			342			—		—			—			342
Amortization on hedging activities	—			—			—		(12		)	—			(12		)
Pension and post-retirement	—			—			—		—			296			296
June 30, 2018	$	27,309		$	76,357		$	—	$	188		$	(3,103	)	$	100,751

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Transactions with Related Parties

6 Months Ended

Jun. 30, 2018

Related Party Transactions [Abstract]

Transactions with Related Parties

Transactions with Related Parties

The following table includes significant outstanding related party member-activity balances.

(in thousands)	June 30, 2018		December 31, 2017
Advances	$	55,156,375	$	56,819,556
Letters of credit (1)	4,372,957		4,612,680
MPF loans	622,014		696,204
Deposits	17,580		32,420
Capital stock	2,581,823		2,470,117

Note:

⁽¹⁾ Letters of credit are off-balance sheet commitments.

The following table summarizes the effects on the Statement of Income corresponding to the related party member balances above. Amounts related to prepayment of fess on advances and interest expense on deposits were immaterial for the periods presented.

	Three months ended June 30,				Six months ended June 30,
(in thousands)	2018		2017		2018		2017
Interest income on advances (1)	$	308,657	$	166,669	$	552,449	$	326,594
Interest income on MPF loans	8,542		10,386		17,485		21,568
Letters of credit fees	1,379		1,674		2,951		3,536

Note:

⁽¹⁾ For the three and six months ended June 30, 2018, balances include contractual interest income of $299.7 million and $545.1 million, net interest settlements on derivatives in fair value hedge relationships of $8.9 million and $7.2 million and total amortization of basis adjustments was immaterial and $0.1 million. For the three and six months ended June 30, 2017, balances include contractual interest income of $170.8 million and $334.6 million, net interest settlements on derivatives in fair value hedge relationships of $(4.2) million and $(9.4) million and total amortization of basis adjustments was $0.1 million and $1.4 million.

The following table includes the MPF activity of the related party members.

	Three months ended June 30,				Six months ended June 30,
(in thousands)	2018		2017		2018		2017
Total MPF loan volume purchased	$	1,569	$	6,501	$	5,438	$	10,031

The following table summarizes the effect of the MPF activities with FHLBank of Chicago.

	Three months ended June 30,				Six months ended June 30,
(in thousands)	2018		2017		2018		2017
Servicing fee expense	$	747	$	747	$	1,458	$	1,176

(in thousands)	June 30, 2018		December 31, 2017
Interest-bearing deposits maintained with FHLBank of Chicago	$	5,888	$	5,340

From time to time, the Bank may borrow from or lend to other FHLBanks on a short-term uncollateralized basis. During the six months ended June 30, 2018, there was no borrowing or lending activity between the Bank and other FHLBanks. During the six months ended June 30, 2017, the total amount borrowed from and repaid to other FHLBanks was $400.0 million.

Subject to mutually agreed upon terms, on occasion, an FHLBank may transfer at fair value its primary debt obligations to another FHLBank, which becomes the primary obligor on the transferred debt upon completion of the transfer. During the six months ended June 30, 2018 and 2017, there were no transfers of debt between the Bank and another FHLBank.

From time to time, a member of one FHLBank may be acquired by a member of another FHLBank. When such an acquisition occurs, the two FHLBanks may agree to transfer at fair value the loans of the acquired member to the FHLBank of the surviving member. The FHLBanks may also agree to the purchase and sale of any related hedging instrument. The Bank had no such activity during the six months ended June 30, 2018 and 2017.

Additional discussions regarding related party transactions can be found in Note 18 to the audited financial statements in the Bank's 2017 Form 10-K.

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Estimated Fair Values

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Estimated Fair Values

Estimated Fair Values

Fair value amounts have been determined by the Bank using available market information and 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., an exit price). These estimates are based on recent market data and other pertinent information available to the Bank at June 30, 2018 and December 31, 2017. Although the management of the Bank believes that the valuation methods are appropriate and provide a reasonable determination of the fair value of these financial instruments, there are inherent limitations in any valuation technique. Therefore, these fair values are not necessarily equal to the amounts that would be realized in current market transactions, although they do reflect the Bank’s judgment of how a market participant would estimate the fair values.

The carrying value and estimated fair value of the Bank’s financial instruments at June 30, 2018 and December 31, 2017 are presented in the table below.

Fair Value Summary Table
	June 30, 2018
(in thousands)	Carrying Value		Level 1		Level 2		Level 3		Netting Adjustments and Cash Collateral (1)			Estimated Fair Value
Assets:
Cash and due from banks	$	161,924	$	161,924	$	—	$	—	$	—		$	161,924
Interest-bearing deposits	620,888		615,000		5,888		—		—			620,888
Federal funds sold	5,975,000		—		5,974,931		—		—			5,974,931
Securities purchased under agreement to resell (2)	1,500,000		—		1,499,981		—		—			1,499,981
Trading securities	535,095		—		535,095		—		—			535,095
AFS securities	8,318,998		—		7,843,285		475,713		—			8,318,998
HTM securities	3,802,405		—		3,560,033		242,226		—			3,802,259
Advances	76,340,011		—		76,318,912		—		—			76,318,912
Mortgage loans held for portfolio, net	4,171,476		—		4,076,595		—		—			4,076,595
BOB loans, net	16,214		—		—		16,214		—			16,214
Accrued interest receivable	209,555		—		209,555		—		—			209,555
Derivative assets	115,533		—		18,325		—		97,208			115,533
Liabilities:
Deposits	$	551,092	$	—	$	551,092	$	—	$	—		$	551,092
Discount notes	26,988,892		—		26,985,801		—		—			26,985,801
Bonds	68,681,867		—		68,441,441		—		—			68,441,441
Mandatorily redeemable capital stock (3)	4,530		4,607		—		—		—			4,607
Accrued interest payable (3)	170,415		—		170,338		—		—			170,338
Derivative liabilities	15,027		—		104,913		—		(89,886		)	15,027

	December 31, 2017
(in thousands)	Carrying Value		Level 1		Level 2		Level 3		Netting Adjustments and Cash Collateral (1)			Estimated Fair Value
Assets:
Cash and due from banks	$	3,414,992	$	3,414,992	$	—	$	—	$	—		$	3,414,992
Interest-bearing deposits	280,340		275,000		5,340		—		—			280,340
Federal funds sold	5,650,000		—		5,649,868		—		—			5,649,868
Securities purchased under agreement to resell (2)	500,000		—		499,999		—		—			499,999
Trading securities	399,296		9,657		389,639		—		—			399,296
AFS securities	9,044,387		2,015		8,517,829		524,543		—			9,044,387
HTM securities	1,883,051		—		1,611,151		283,383		—			1,894,534
Advances	74,279,798		—		74,242,369		—		—			74,242,369
Mortgage loans held for portfolio, net	3,923,123		—		3,921,976		—		—			3,921,976
BOB loans, net	14,083		—		—		14,083		—			14,083
Accrued interest receivable	164,459		—		164,459		—		—			164,459
Derivative assets (4)	80,756		—		9,380		—		71,376			80,756
Liabilities:
Deposits	$	538,076	$	—	$	538,076	$	—	$	—		$	538,076
Discount notes	36,193,289		—		36,185,419		—		—			36,185,419
Bonds	57,533,722		—		57,439,681		—		—			57,439,681
Mandatorily redeemable capital stock (3)	5,113		5,201		—		—		—			5,201
Accrued interest payable (3)	118,473		—		118,384		—		—			118,384
Derivative liabilities (4)	19,521		—		62,786		—		(43,265		)	19,521

Notes:

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

⁽²⁾ Based on the fair value of the related collateral held, the securities purchased under agreements to resell were fully collateralized for the periods presented. There were no offsetting liabilities related to these securities at June 30, 2018 and December 31, 2017. These instruments’ maturity term is overnight.

⁽³⁾ The estimated fair value amount for the mandatorily redeemable capital stock line item includes accrued dividend interest; this amount is excluded from the estimated fair value for the accrued interest payable line item.

⁽⁴⁾ To conform with current presentation, $11.2 million in variation margin received on cleared derivatives 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 Hierarchy. The fair value hierarchy is used to prioritize the inputs used to measure fair value by maximizing the use of observable inputs. The inputs are evaluated and an overall level for the fair value measurement is determined. This overall level is an indication of the 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 reporting entity 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: (1) quoted prices for similar assets or liabilities in active markets; (2) quoted prices for identical or similar assets or liabilities in markets that are not active or in which little information is released publicly; (3) 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 (4) inputs that are derived principally from or corroborated by observable market data by correlation or other means.

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.

Summary of Valuation Methodologies and Primary Inputs

The valuation methodologies 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 nonrecurring basis in the Statement of Condition are listed below.

Investment Securities – non-MBS. The Bank uses either the income or market approach to determine the estimated fair value of non-MBS investment securities.

For instruments that use the income approach, the significant inputs include a market-observable interest rate curve and a discount spread, if applicable. The market-observable interest rate curves and the related instrument types are as follows:

•Treasury curve: U.S. Treasury obligations

•LIBOR Swap curve: certificates of deposit

•CO curve: GSE and other U.S. obligations

The Bank uses a market approach for its state and local agency bonds. The Bank obtains prices from multiple designated third-party vendors when available, and the default price is the average of the prices obtained. Otherwise, the approach is generally consistent with the approach outlined below for Investment Securities - MBS.

Investment Securities – MBS.  To value MBS holdings, the Bank obtains prices from multiple third-party pricing vendors, when available. The pricing vendors use various proprietary models to price MBS. The inputs to those models are derived from various sources including, but not limited to: benchmark yields, reported trades, dealer estimates, issuer spreads, benchmark securities, bids, offers and other market-related data. Since many MBS do not trade on a daily basis, the pricing vendors use available information such as benchmark curves, benchmarking of like securities, sector groupings and matrix pricing to determine the prices for individual securities, as applicable. Each pricing vendor has an established challenge process in place for all MBS valuations, which facilitates resolution of potentially erroneous prices identified by the Bank.

During the year, the Bank conducts reviews of its pricing vendors to enhance its understanding of the vendors' pricing processes, methodologies and control procedures. To the extent available, the Bank also reviews the vendors' independent auditors' reports regarding the internal controls over their valuation processes.

The Bank's valuation technique 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. 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. If, on the other hand, 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. If all prices received for a security are outside the tolerance threshold level of the median price, then there is no default price, and the final price is determined by an evaluation of all outlier prices as described above.

As of June 30, 2018, for substantially all of its MBS, the Bank received a price from all of its vendors and for all but one security, the default price was the final price. For this security, an analysis was conducted and the Bank concluded that the outlier price was the best estimate of fair value. In addition, there were minimal outliers to evaluate. Based on the Bank's reviews of the pricing methods including inputs and controls employed by the third-party pricing vendors and the relative lack of dispersion among the vendor prices (or, in those instances in which there were outliers or significant yield variances, the Bank's additional analyses), the Bank believes the 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. There continues to be unobservable inputs and a lack of significant market activity for private label MBS; therefore, as of June 30, 2018, the Bank classified private label MBS as Level 3.

Derivative Assets/Liabilities. The Bank bases the fair values of derivatives with similar terms on market prices, when available. However, market prices do not exist for many types of derivative instruments. Consequently, fair values for these instruments are estimated using standard valuation techniques such as discounted cash flow analysis and comparisons to similar instruments. Estimates developed using these methods are highly subjective and require judgment regarding significant matters such as the amount and timing of future cash flows, volatility of interest rates and the selection of discount rates that appropriately reflect market and credit risks. In addition, the fair value estimates for these instruments include accrued interest receivable/payable which approximate their carrying values due to their short-term nature.

The discounted cash flow analysis used to determine the net present value of derivative instruments utilizes market-observable inputs (inputs that are actively quoted and can be validated to external sources). Inputs by class of derivative are as follows:

Interest-rate related:

• Discount rate assumption. Overnight Index Swap (OIS) curve through contractual term.

• Forward interest rate assumption. LIBOR Swap curve or OIS curve through contractual term.

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

Mortgage delivery commitments:

• To Be Announced (TBA) securities prices. Market-based prices of TBAs are determined by coupon class and expected term until settlement and a pricing adjustment reflective of the secondary mortgage market.

The Bank is subject to credit risk on uncleared derivatives transactions due to the potential nonperformance by the derivatives counterparties. To mitigate this risk, the Bank has entered into netting arrangements and security agreements that provide for delivery of collateral at specified levels. As a result, uncleared derivatives are recognized as collateralized-to-market and the fair value of uncleared derivatives excludes netting adjustments and collateral. The Bank has evaluated the potential for fair value adjustment due to uncleared counterparty credit risk and has concluded that no adjustments are necessary.

The Bank's credit risk exposure on cleared derivatives is mitigated by the substitution of a central counterparty for individual counterparties. In addition, the CME Clearing rulebook requires delivery of initial margin to offset future changes in value and daily delivery of variation margin to offset changes in market value. Variation margin payments are daily settlement payments rather than collateral. Initial margin continues to be treated as collateral and accounted for separately.

The fair values of derivatives are netted by clearing agent and/or by counterparty pursuant to the provisions of each of the Bank’s netting agreements. If these netted amounts are positive, they are classified as an asset and, if negative, as a liability.

Impaired Mortgage Loans Held for Portfolio and Real Estate Owned. The estimated fair values of impaired mortgage loans held for portfolio and real estate owned are determined based on values provided by a third party's retail-based AVM. The Bank adjusts the AVM value based on the amount it has historically received on liquidation.

Subjectivity of Estimates. Estimates of the fair value of financial assets and liabilities using the methods described above 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. These estimates are susceptible to material near term changes because they are made as of a specific point in time.

Fair Value Measurements. The following tables present, for each hierarchy level, the Bank’s assets and liabilities that are measured at fair value on a recurring or non-recurring basis on its Statement of Condition at June 30, 2018 and December 31, 2017. The Bank measures certain mortgage loans held for portfolio at fair value when a charge-off is recognized and subsequently when the fair value less costs to sell is lower than the carrying amount. Real estate owned is measured using fair value when the assets' fair value less costs to sell is lower than the carrying amount.

	June 30, 2018
(in thousands)	Level 1		Level 2		Level 3		Netting Adjustment and Cash Collateral(1)			Total
Recurring fair value measurements - Assets
Trading securities:
Non MBS:
U.S. Treasury obligations	$	—	$	97,972	$	—	$	—		$	97,972
GSE and TVA obligations	—		437,123		—		—			437,123
Total trading securities	$	—	$	535,095	$	—	$	—		$	535,095
AFS securities:
Non MBS:
GSE and TVA obligations	$	—	$	2,427,065	$	—	$	—		$	2,427,065
State or local agency obligations	—		260,972		—		—			260,972
MBS:
U.S. obligations single family MBS	—		165,728		—		—			165,728
GSE single-family MBS	—		2,521,069		—		—			2,521,069
GSE multifamily MBS	—		2,468,451		—		—			2,468,451
Private label residential MBS	—		—		475,713		—			475,713
Total AFS securities	$	—	$	7,843,285	$	475,713	$	—		$	8,318,998
Derivative assets:
Interest rate related	$	—	$	18,286	$	—	$	97,208		$	115,494
Mortgage delivery commitments	—		39		—		—			39
Total derivative assets	$	—	$	18,325	$	—	$	97,208		$	115,533
Total recurring assets at fair value	$	—	$	8,396,705	$	475,713	$	97,208		$	8,969,626
Recurring fair value measurements - Liabilities
Derivative liabilities:
Interest rate related	$	—	$	104,891	$	—	$	(89,886	)	$	15,005
Mortgage delivery commitments	—		22		—		—			22
Total recurring liabilities at fair value (3)	$	—	$	104,913	$	—	$	(89,886	)	$	15,027
Non-recurring fair value measurements - Assets
Impaired mortgage loans held for portfolio	$	—	$	—	$	5,530	$	—		$	5,530
Real estate owned	—		—		4,536		—			4,536
Total non-recurring assets at fair value	$	—	$	—	$	10,066	$	—		$	10,066

	December 31, 2017
(in thousands)	Level 1		Level 2		Level 3		Netting Adjustment and Cash Collateral(2)			Total
Recurring fair value measurements - Assets
Trading securities:
Non MBS:
GSE and TVA obligations	$	—	$	389,639	$	—	$	—		$	389,639
Mutual funds	9,657		—		—		—			9,657
Total trading securities	$	9,657	$	389,639	$	—	$	—		$	399,296
AFS securities:
Non MBS:
GSE and TVA obligations	$	—	$	2,820,779	$	—	$	—		2,820,779
State or local agency obligations	—		269,364		—		—			269,364
Mutual funds	2,015		—		—		—			2,015
MBS:
U.S. obligations single family MBS	—		179,273		—		—			179,273
GSE single-family MBS	—		2,665,795		—		—			2,665,795
GSE multifamily MBS	—		2,582,618		—		—			2,582,618
Private label residential MBS	—		—		524,543		—			524,543
Total AFS securities	$	2,015	$	8,517,829	$	524,543	$	—		$	9,044,387
Derivative assets:
Interest rate related (2)	$	—	$	9,376	$	—	$	71,376		$	80,752
Mortgage delivery commitments	—		4		—		—			4
Total derivative assets	$	—	$	9,380	$	—	$	71,376		$	80,756
Total recurring assets at fair value	$	11,672	$	8,916,848	$	524,543	$	71,376		$	9,524,439
Recurring fair value measurements - Liabilities
Derivative liabilities:
Interest rate related (2)	$	—	$	62,725	$	—	$	(43,265	)	$	19,460
Mortgage delivery commitments	—		61		—		—			61
Total recurring liabilities at fair value (3)	$	—	$	62,786	$	—	$	(43,265	)	$	19,521
Non-recurring fair value measurements - Assets
Impaired mortgage loans held for portfolio	$	—	$	—	$	17,329	$	—		$	17,329
Real estate owned	—		—		8,096		—			8,096
Total non-recurring assets at fair value	$	—	$	—	$	25,425	$	—		$	25,425

Notes:

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

⁽²⁾ To conform with current presentation, $11.2 million in variation margin received on cleared derivatives has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with Netting Adjustments and Cash Collateral.

⁽³⁾ Derivative liabilities represent the total liabilities at fair value.

There were no transfers between Levels 1 or 2 during the first six months of 2018 and 2017.

Level 3 Disclosures for all Assets and Liabilities That Are Measured at Fair Value on a Recurring Basis. The following table presents a reconciliation of all assets and liabilities that are measured at fair value on the Statement of Condition using significant unobservable inputs (Level 3) for the three and six months ended June 30, 2018 and 2017. For instruments carried at fair value, the Bank reviews the fair value hierarchy classifications each quarter. Changes in the observability of the valuation attributes may result in a reclassification of certain financial assets or liabilities. Such reclassifications are reported as transfers in/out at fair value in the quarter in which the changes occur. Transfers are reported as of the beginning of the period. There were no Level 3 transfers during the first six months of 2018 or 2017.

	AFS Private Label MBS-Residential
	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Balance, beginning of period	$	503,647		$	642,015		$	524,543		$	673,976
Total gains (losses) (realized/unrealized) included in:
Accretion of credit losses in interest income	3,794			5,345			7,579			10,466
Net OTTI losses, credit portion	(80		)	—			(342		)	(664		)
Net unrealized gains on AFS in OCI	8			25			30			91
Reclassification of non-credit portion included in net income	80			—			342			664
Net change in fair value on OTTI AFS in OCI	—			(437		)	—			(1,638		)
Unrealized gains on OTTI AFS in OCI	3,149			8,766			3,062			7,680
Purchases, issuances, sales, and settlements:
Settlements	(34,885		)	(45,338		)	(59,501		)	(80,199		)
Balance at June 30	$	475,713		$	610,376		$	475,713		$	610,376
Total amount of gains for the periods presented included in earnings attributable to the change in unrealized gains or losses relating to assets and liabilities still held at June 30	$	3,714		$	4,852		$	7,237		$	9,296

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

The following table presents the Bank's various off-balance sheet commitments which are described in detail below.

(in thousands)	June 30, 2018						December 31, 2017
Notional amount	Expiration Date Within One Year		Expiration Date After One Year		Total		Total
Standby letters of credit outstanding (1) (2)	$	18,638,742	$	409	$	18,639,151	$	18,965,939
Commitments to fund additional advances and BOB loans	15,684		—		15,684		43,972
Commitments to fund or purchase mortgage loans	35,814		—		35,814		25,487
Unsettled consolidated obligation bonds, at par	1,863,000		—		1,863,000		1,076,200
Unsettled consolidated obligation discount notes, at par	—		—		—		565,000

Notes:

⁽¹⁾ Excludes approved requests to issue future standby letters of credit of $165.9 million and $44.1 million at June 30, 2018 and December 31, 2017, respectively.

⁽²⁾ Letters of credit in the amount of $2.9 billion and $2.2 billion at June 30, 2018 and December 31, 2017, respectively, have annual renewal language that, as long as both parties agree, permit the letter of credit to be renewed for an additional year with a maximum renewal period of approximately 5 years.

Commitments to Extend Credit on Standby Letters of Credit, Additional Advances and BOB Loans. Standby letters of credit are issued on behalf of members for a fee. A standby letter of credit is a financing arrangement between the Bank and its member. If the Bank is required to make payment for a beneficiary’s draw, these amounts are withdrawn from the member’s Demand Deposit Account (DDA). Any remaining amounts not covered by the withdrawal from the member’s DDA are converted into a collateralized overnight advance.

Unearned fees related to standby letters of credit are recorded in other liabilities and had a balance of $4.0 million and $3.9 million as of June 30, 2018 and December 31, 2017, respectively. The Bank monitors the creditworthiness of its standby letters of credit based on an evaluation of the member. The Bank has established parameters for the review, assessment, monitoring and measurement of credit risk related to these standby letters of credit.

Based on management’s credit analyses, collateral requirements, and adherence to the requirements set forth in Bank policy and Finance Agency regulations, the Bank has not recorded any additional liability on these commitments and standby letters of credit. Refer to Note 8 - Allowance for Credit Losses in this Form 10-Q. Excluding BOB, commitments and standby letters of credit are collateralized at the time of issuance. The Bank records a liability with respect to BOB commitments, which is reflected in Other liabilities on the Statement of Condition.

The Bank does not have any legally binding or unconditional unused lines of credit for advances at June 30, 2018 and December 31, 2017. However, within the Bank's Open RepoPlus advance product, there were conditional lines of credit outstanding of $9.2 billion and $8.0 billion at June 30, 2018 and December 31, 2017, respectively.

Commitments to Fund or Purchase Mortgage Loans. The Bank may enter into commitments that unconditionally obligate the Bank to purchase mortgage loans under the MPF Program. These delivery commitments are generally for periods not to exceed 60 days. Such commitments are recorded as derivatives.

Pledged Collateral. The Bank may pledge cash and securities, as collateral, related to derivatives. Refer to Note 9 - Derivatives and Hedging Activities in this Form 10-Q for additional information about the Bank's pledged collateral and other credit-risk-related contingent features.

Legal Proceedings. The Bank is subject to legal proceedings arising in the normal course of business. The Bank would record an accrual for a loss contingency when it is probable that a loss has been incurred and the amount can be reasonably estimated. After consultation with legal counsel, management does not anticipate that the ultimate liability, if any, arising out of these matters will have a material effect on the Bank's financial condition, results of operations or cash flows.

Notes 6, 9, 10, 11, and 12 also discuss other commitments and contingencies.

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Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2018

Impairment of Investments, Policy

The Bank performed a cash flow analysis using two third-party models to assess whether the amortized cost basis of its private label residential MBS will be recovered. During the second quarter of 2018, the OTTI Governance Committee developed a short-term housing price forecast using whole percentages with changes ranging from (8.0)% to 13.0% over the 12 month period beginning April 1, 2018. For the vast majority of markets the short-term forecast has changes from 2.0% to 7.0%. Thereafter, a unique path is projected for each geographic area based on an internally developed framework derived from historical data.

Finance, Loan and Lease Receivables, Held-for-investment, Allowance and Nonperforming Loans, Allowance Policy

MortgageLoans- Government-Guaranteed or Insured. The Bank invests in government-guaranteed or insured fixed-rate mortgage loans secured by one-to-four family residential properties. Government-guaranteed mortgage loans are those insured or guaranteed by the Federal Housing Administration (FHA), Department of Veterans Affairs (VA), the Rural Housing Service (RHS) of the Department of Agriculture and/or by Housing and Urban Development (HUD). Any losses from such loans are expected to be recovered from those entities. If not, losses from such loans must be contractually absorbed by the servicers. Therefore, there is no allowance for credit losses on government-guaranteed or insured mortgage loans.

Mortgage Loans - Conventional MPF. The allowances for conventional loans are determined by analyses that include consideration of various data observations such as past performance, current performance, loan portfolio characteristics, collateral-related characteristics, industry data, and prevailing economic conditions. The measurement of the allowance for credit losses includes: (1) reviewing all residential mortgage loans at the individual master commitment level; (2) reviewing specifically identified collateral-dependent loans for impairment; and/or (3) reviewing homogeneous pools of residential mortgage loans.

The Bank’s allowance for credit losses takes into consideration the credit enhancement (CE) associated with conventional mortgage loans under the MPF Program. Specifically, the determination of the allowance generally considers expected Primary Mortgage Insurance (PMI), Supplemental Mortgage Insurance (SMI), and other CE amounts. Any incurred losses that are expected to be recovered from the CE reduce the Bank’s allowance for credit losses.

For conventional MPF loans, credit losses that are not fully covered by PMI are allocated to the Bank up to an agreed-upon amount, referred to as the first loss account (FLA). The FLA functions as a tracking mechanism for determining the point after which the participating financial institution (PFI) is required to cover losses. The Bank pays the PFI a fee, a portion of which may be based on the credit performance of the mortgage loans, in exchange for absorbing the second layer of losses up to an agreed-upon CE amount. The CE amount may be a direct obligation of the PFI and/or an SMI policy paid for by the PFI, and may include performance-based fees which can be withheld to cover losses allocated to the Bank (referred to as recaptured CE fees). The PFI is required to pledge collateral to secure any portion of its CE amount that is a direct obligation. A receivable which is assessed for collectability is generally established for losses expected to be recovered by withholding CE fees. Estimated losses exceeding the CE, if any, are incurred by the Bank.

The Bank has established an allowance methodology for each of the Bank’s portfolio segments: credit products, government-guaranteed or insured MPF loans held for portfolio, conventional MPF loans held for portfolio, and BOB loans.

Credit Products. The Bank manages its total credit exposure (TCE), which includes advances, letters of credit, advance commitments, and other credit product exposure, through an integrated approach. This approach generally requires a credit limit to be established 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 each borrower's need for a reliable source of funding. In addition, the Bank lends to its members in accordance with theFHLBankAct and Finance Agency regulations. Specifically, the FHLBank Act requires the Bank to obtain collateral to fully secure credit products. The estimated value of the collateral required to secure each member’s credit products is calculated by applying collateral weightings, or haircuts, to the value of the collateral. The Bank accepts cash, certain investment securities, residential mortgage loans, deposits, and other real estate related assets as collateral. In addition, Community Financial Institutions (CFIs) are eligible to utilize expanded statutory collateral provisions for small business, agriculture, and community development loans. The Bank’s capital stock owned by the borrowing member is pledged as secondary collateral. 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 require additional or substitute collateral to help ensure that credit products continue to be secured by adequate collateral. Management of the Bank believes that these policies effectively manage the Bank’s credit risk from credit products.

Based upon the financial condition of the member, the Bank either allows a member to retain physical possession of the collateral assigned to the Bank or requires the member to specifically deliver physical possession or control of the collateral to the Bank or its custodians. However, regardless of the member's financial condition, the Bank always takes possession or control of securities used as collateral. The Bank perfects its security interest in all pledged collateral. The FHLBank Act affords any security interest granted to the Bank by a member (or an affiliate of a member) priority over the claims or rights of any other party, except for claims or rights of a third party that would be otherwise entitled to priority under applicable law and that are held by a bona fide purchaser for value or by a secured party holding a prior perfected security interest.

Using a risk-based approach, the Bank considers the payment status, collateral types and concentration levels, and borrower’s financial condition to be indicators of credit quality on its credit products. At June 30, 2018 and December 31, 2017, the Bank had rights to collateral on a member-by-member basis with a value in excess of its outstanding extensions of credit.

The Bank continues to evaluate and, as necessary, make changes to its collateral guidelines based on current market conditions. At June 30, 2018 and December 31, 2017, the Bank did not have any credit products that were past due, on nonaccrual status, or considered impaired. In addition, the Bank did not have any credit products considered to be troubled debt restructurings (TDRs).

Based upon the collateral held as security, its credit extension policies, collateral policies, management’s credit analysis and the repayment history on credit products, the Bank has not incurred any credit losses on credit products since inception. Accordingly, the Bank has not recorded any allowance for credit losses for these products.

Loans and Leases Receivable, Mortgage and Mortgage-Backed Securities, Valuation, Policy

Individually Evaluated Mortgage Loans. The Bank evaluates certain conventional mortgage loans for impairment individually

Derivatives, Policy

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

Uncleared Derivatives. For uncleared derivatives, the degree of credit risk depends on the extent to which netting arrangements are included in such contracts to mitigate the risk. The Bank requires collateral agreements with collateral delivery thresholds on all uncleared derivatives.

Generally, the Bank is subject to certain ISDA agreements for uncleared derivatives that require the Bank to post additional collateral with its counterparties if there is deterioration in the Bank's credit rating and the net liability position exceeds the relevant threshold. If the Bank’s credit rating were to be lowered by a major credit rating agency, the Bank would be required to deliver additional collateral on uncleared derivative instruments in net liability positions, unless the collateral delivery threshold is set to zero.

Fair Value Measurement, Policy

Fair Value Hierarchy. The fair value hierarchy is used to prioritize the inputs used to measure fair value by maximizing the use of observable inputs. The inputs are evaluated and an overall level for the fair value measurement is determined. This overall level is an indication of the 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 reporting entity 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: (1) quoted prices for similar assets or liabilities in active markets; (2) quoted prices for identical or similar assets or liabilities in markets that are not active or in which little information is released publicly; (3) 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 (4) inputs that are derived principally from or corroborated by observable market data by correlation or other means.

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.

Fair Value of Financial Instruments, Policy

Investment Securities – MBS.  To value MBS holdings, the Bank obtains prices from multiple third-party pricing vendors, when available. The pricing vendors use various proprietary models to price MBS. The inputs to those models are derived from various sources including, but not limited to: benchmark yields, reported trades, dealer estimates, issuer spreads, benchmark securities, bids, offers and other market-related data. Since many MBS do not trade on a daily basis, the pricing vendors use available information such as benchmark curves, benchmarking of like securities, sector groupings and matrix pricing to determine the prices for individual securities, as applicable. Each pricing vendor has an established challenge process in place for all MBS valuations, which facilitates resolution of potentially erroneous prices identified by the Bank.

Derivative Assets/Liabilities. The Bank bases the fair values of derivatives with similar terms on market prices, when available. However, market prices do not exist for many types of derivative instruments. Consequently, fair values for these instruments are estimated using standard valuation techniques such as discounted cash flow analysis and comparisons to similar instruments. Estimates developed using these methods are highly subjective and require judgment regarding significant matters such as the amount and timing of future cash flows, volatility of interest rates and the selection of discount rates that appropriately reflect market and credit risks. In addition, the fair value estimates for these instruments include accrued interest receivable/payable which approximate their carrying values due to their short-term nature.

The discounted cash flow analysis used to determine the net present value of derivative instruments utilizes market-observable inputs (inputs that are actively quoted and can be validated to external sources). Inputs by class of derivative are as follows:

Interest-rate related:

• Discount rate assumption. Overnight Index Swap (OIS) curve through contractual term.

• Forward interest rate assumption. LIBOR Swap curve or OIS curve through contractual term.

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

Mortgage delivery commitments:

• To Be Announced (TBA) securities prices. Market-based prices of TBAs are determined by coupon class and expected term until settlement and a pricing adjustment reflective of the secondary mortgage market.

The Bank is subject to credit risk on uncleared derivatives transactions due to the potential nonperformance by the derivatives counterparties. To mitigate this risk, the Bank has entered into netting arrangements and security agreements that provide for delivery of collateral at specified levels. As a result, uncleared derivatives are recognized as collateralized-to-market and the fair value of uncleared derivatives excludes netting adjustments and collateral. The Bank has evaluated the potential for fair value adjustment due to uncleared counterparty credit risk and has concluded that no adjustments are necessary.

The Bank's credit risk exposure on cleared derivatives is mitigated by the substitution of a central counterparty for individual counterparties. In addition, the CME Clearing rulebook requires delivery of initial margin to offset future changes in value and daily delivery of variation margin to offset changes in market value. Variation margin payments are daily settlement payments rather than collateral. Initial margin continues to be treated as collateral and accounted for separately.

The fair values of derivatives are netted by clearing agent and/or by counterparty pursuant to the provisions of each of the Bank’s netting agreements. If these netted amounts are positive, they are classified as an asset and, if negative, as a liability.

Impaired Mortgage Loans Held for Portfolio and Real Estate Owned. The estimated fair values of impaired mortgage loans held for portfolio and real estate owned are determined based on values provided by a third party's retail-based AVM. The Bank adjusts the AVM value based on the amount it has historically received on liquidation.

Subjectivity of Estimates. Estimates of the fair value of financial assets and liabilities using the methods described above 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. These estimates are susceptible to material near term changes because they are made as of a specific point in time.

The Bank's valuation technique 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. 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. If, on the other hand, 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. If all prices received for a security are outside the tolerance threshold level of the median price, then there is no default price, and the final price is determined by an evaluation of all outlier prices as described above.

Fair Value Transfer, Policy

For instruments carried at fair value, the Bank reviews the fair value hierarchy classifications each quarter. Changes in the observability of the valuation attributes may result in a reclassification of certain financial assets or liabilities. Such reclassifications are reported as transfers in/out at fair value in the quarter in which the changes occur. Transfers are reported as of the beginning of the period.

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Trading Securities (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Trading Securities and Other Trading Assets [Line Items]

Schedule of Trading Securities

The following table presents trading securities as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Mutual funds (1)	$	—	$	9,657
U.S. Treasury obligations	97,972		—
GSE and TVA obligations	437,123		389,639
Total	$	535,095	$	399,296

Trading Securities [Member]

Schedule of Trading Securities and Other Trading Assets [Line Items]

Net Gains (Losses) on Trading Securities

The following table presents net gains (losses) on trading securities for the second quarter and the first six months of 2018 and 2017.

	Three months ended June 30,					Six months ended June 30,
(in thousands)	2018			2017		2018			2017
Net unrealized gains (losses) on trading securities held at period-end	$	(2,710	)	$	5,321	$	(11,402	)	$	7,606
Net realized gains (losses) on trading securities sold/matured during the period	—			—		—			—
Net gains (losses) on trading securities	$	(2,710	)	$	5,321	$	(11,402	)	$	7,606

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Available-for-Sale (AFS) Securities (Tables) - Available-for-sale Securities

6 Months Ended

Jun. 30, 2018

Schedule of Available-for-sale Securities [Line Items]

Schedule of Available-for-sale Securities Reconciliation

The following tables present AFS securities as of June 30, 2018 and December 31, 2017.

	June 30, 2018
(in thousands)	Amortized Cost (1)		OTTI Recognized in AOCI (2)		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-MBS:
GSE and TVA obligations	$	2,397,893	$	—	$	33,175	$	(4,003	)	$	2,427,065
State or local agency obligations	264,032		—		2,292		(5,352		)	260,972
Total non-MBS	$	2,661,925	$	—	$	35,467	$	(9,355	)	$	2,688,037
MBS:
U.S. obligations single family MBS	$	165,238	$	—	$	541	$	(51	)	$	165,728
GSE single-family MBS	2,512,230		—		15,329		(6,490		)	2,521,069
GSE multifamily MBS	2,476,465		—		1,402		(9,416		)	2,468,451
Private label residential MBS	399,474		—		76,357		(118		)	475,713
Total MBS	$	5,553,407	$	—	$	93,629	$	(16,075	)	$	5,630,961
Total AFS securities	$	8,215,332	$	—	$	129,096	$	(25,430	)	$	8,318,998

	December 31, 2017
(in thousands)	Amortized Cost (1)		OTTI Recognized in AOCI (2)		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Non-MBS:
Mutual funds (3)	$	2,015	$	—	$	—	$	—		$	2,015
GSE and TVA obligations	2,798,838		—		27,460		(5,519		)	2,820,779
State or local agency obligations	264,812		—		5,546		(994		)	269,364
Total non-MBS	$	3,065,665	$	—	$	33,006	$	(6,513	)	$	3,092,158
MBS:
U.S. obligations single family MBS	$	178,882	$	—	$	465	$	(74	)	$	179,273
GSE single-family MBS	2,654,315		—		15,238		(3,758		)	2,665,795
GSE multifamily MBS	2,579,625		—		5,162		(2,169		)	2,582,618
Private label residential MBS	451,737		—		72,953		(147		)	524,543
Total MBS	$	5,864,559	$	—	$	93,818	$	(6,148	)	$	5,952,229
Total AFS securities	$	8,930,224	$	—	$	126,824	$	(12,661	)	$	9,044,387

Notes:

⁽¹⁾ Amortized cost includes adjustments made to the cost basis of an investment for accretion of discounts and/or amortization of premiums, collection of cash, OTTI recognized, and/or fair value hedge accounting adjustments.

⁽²⁾ Represents the non-credit portion of an OTTI recognized during the life of the security.

⁽³⁾ Reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01, effective January 1, 2018. Refer to Note 1 in this Form 10-Q.

Reconciliation of OTTI on Investments Recognized in AOCI

The following table presents a reconciliation of the AFS OTTI loss recognized through AOCI to the total net non-credit portion of OTTI gains on AFS securities in AOCI as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Non-credit portion of OTTI losses	$	—	$	—
Net unrealized gains on OTTI securities since their last OTTI credit charge	76,357		72,953
Net non-credit portion of OTTI gains on AFS securities in AOCI	$	76,357	$	72,953

Schedule of Unrealized Loss on Investments

The following tables summarize the AFS securities with unrealized losses as of June 30, 2018 and December 31, 2017. The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position.

	June 30, 2018
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses (1)
Non-MBS:
GSE and TVA obligations	$	16,945	$	(338	)	$	914,515	$	(3,665	)	$	931,460	$	(4,003	)
State or local agency obligations	49,670		(865		)	74,288		(4,487		)	123,958		(5,352		)
Total non-MBS	$	66,615	$	(1,203	)	$	988,803	$	(8,152	)	$	1,055,418	$	(9,355	)
MBS:
U.S. obligations single-family MBS	$	—	$	—		$	25,572	$	(51	)	$	25,572	$	(51	)
GSE single-family MBS	194,089		(2,350		)	150,692		(4,140		)	344,781		(6,490		)
GSE multifamily MBS	1,461,775		(9,416		)	—		—			1,461,775		(9,416		)
Private label residential MBS	—		—			3,043		(118		)	3,043		(118		)
Total MBS	$	1,655,864	$	(11,766	)	$	179,307	$	(4,309	)	$	1,835,171	$	(16,075	)
Total	$	1,722,479	$	(12,969	)	$	1,168,110	$	(12,461	)	$	2,890,589	$	(25,430	)

	December 31, 2017
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses (1)
Non-MBS:
GSE and TVA obligations	$	12,386	$	(114	)	$	1,262,810	$	(5,405	)	$	1,275,196	$	(5,519	)
State or local agency obligations	4,371		(78		)	77,859		(916		)	82,230		(994		)
Total non-MBS	$	16,757	$	(192	)	$	1,340,669	$	(6,321	)	$	1,357,426	$	(6,513	)
MBS:
U.S. obligations single family MBS	$	—	$	—		$	37,330	$	(74	)	$	37,330	$	(74	)
GSE single-family MBS	150,170		(651		)	272,925		(3,107		)	423,095		(3,758		)
GSE multifamily MBS	424,932		(2,096		)	10,796		(73		)	435,728		(2,169		)
Private label residential MBS	—		—			3,013		(147		)	3,013		(147		)
Total MBS	$	575,102	$	(2,747	)	$	324,064	$	(3,401	)	$	899,166	$	(6,148	)
Total	$	591,859	$	(2,939	)	$	1,664,733	$	(9,722	)	$	2,256,592	$	(12,661	)

Note:

⁽¹⁾ Total unrealized losses equal the sum of “OTTI Recognized in AOCI” and “Gross Unrealized Losses” in the first two tables of this Note 3.

Investments Classified by Contractual Maturity Date

Redemption Terms. The amortized cost and fair value of AFS securities by contractual maturity as of June 30, 2018 and December 31, 2017 are presented below. Expected maturities of some securities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment fees.

(in thousands)	June 30, 2018				December 31, 2017
Year of Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in one year or less	$	984,940	$	982,701	$	1,002,015	$	999,160
Due after one year through five years	298,276		301,970		607,802		611,231
Due after five years through ten years	731,591		746,432		676,975		687,993
Due in more than ten years	647,118		656,934		778,873		793,774
Total non-MBS	2,661,925		2,688,037		3,065,665		3,092,158
MBS	5,553,407		5,630,961		5,864,559		5,952,229
Total AFS securities	$	8,215,332	$	8,318,998	$	8,930,224	$	9,044,387

Schedule of Interest Rate Payment Terms For Investments

The following table details interest payment terms at June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Amortized cost of AFS non-MBS:
Fixed-rate	$	2,576,985	$	2,980,770
Variable-rate	84,940		84,895
Total non-MBS	$	2,661,925	$	3,065,665
Amortized cost of AFS MBS:
Fixed-rate	$	1,090,644	$	1,142,290
Variable-rate	4,462,763		4,722,269
Total MBS	$	5,553,407	$	5,864,559
Total amortized cost of AFS securities	$	8,215,332	$	8,930,224

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Held-to-Maturity (HTM) Securities (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Held-to-maturity Securities [Line Items]

Held-to-maturity Securities

The following tables present HTM securities as of June 30, 2018 and December 31, 2017.

	June 30, 2018
(in thousands)	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Fair Value
Non-MBS:
Certificates of deposit	$	1,700,000	$	63	$	(53	)	$	1,700,010
State or local agency obligations	117,455		75		(4,399		)	113,131
Total non-MBS	$	1,817,455	$	138	$	(4,452	)	$	1,813,141
MBS:
U.S. obligations single-family MBS	$	370,376	$	3,576	$	—		$	373,952
GSE single-family MBS	681,427		4,049		(203		)	685,273
GSE multifamily MBS	694,501		3,373		(10,207		)	687,667
Private label residential MBS	238,646		3,879		(299		)	242,226
Total MBS	$	1,984,950	$	14,877	$	(10,709	)	$	1,989,118
Total HTM securities	$	3,802,405	$	15,015	$	(15,161	)	$	3,802,259

	December 31, 2017
(in thousands)	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Fair Value
Non-MBS:
Certificates of deposit	$	175,000	$	30	$	—		$	175,030
State or local agency obligations	122,400		62		(5,571		)	116,891
Total non-MBS	$	297,400	$	92	$	(5,571	)	$	291,921
MBS:
U.S. obligations single-family MBS	$	424,341	$	4,112	$	—		$	428,453
GSE single-family MBS	156,597		2,323		(39		)	158,881
GSE multifamily MBS	726,008		9,186		(3,298		)	731,896
Private label residential MBS	278,705		4,953		(275		)	283,383
Total MBS	$	1,585,651	$	20,574	$	(3,612	)	$	1,602,613
Total HTM securities	$	1,883,051	$	20,666	$	(9,183	)	$	1,894,534

Held-to-maturity Securities

Schedule of Held-to-maturity Securities [Line Items]

Schedule of Unrealized Loss on Investments

The following tables summarize the HTM securities with unrealized losses as of June 30, 2018 and December 31, 2017. The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position.

	June 30, 2018
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-MBS:
Certificates of deposit	$	449,947	$	(53	)	$	—	$	—		$	449,947	$	(53	)
State or local agency obligations	—		—			102,371		(4,399		)	102,371		(4,399		)
Total non-MBS	$	449,947	$	(53	)	$	102,371	$	(4,399	)	$	552,318	$	(4,452	)
MBS:
GSE single-family MBS	$	74,524	$	(166	)	$	4,988	$	(37	)	$	79,512	$	(203	)
GSE multifamily MBS	250,746		(5,646		)	92,016		(4,561		)	342,762		(10,207		)
Private label residential MBS	3,617		(18		)	13,454		(281		)	17,071		(299		)
Total MBS	$	328,887	$	(5,830	)	$	110,458	$	(4,879	)	$	439,345	$	(10,709	)
Total	$	778,834	$	(5,883	)	$	212,829	$	(9,278	)	$	991,663	$	(15,161	)

	December 31, 2017
	Less than 12 Months					Greater than 12 Months					Total
(in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Non-MBS:
State or local agency obligations	$	—	$	—		$	105,119	$	(5,571	)	$	105,119	$	(5,571	)
MBS:
GSE single-family MBS	$	—	$	—		$	5,633	$	(39	)	$	5,633	$	(39	)
GSE multifamily MBS	169,089		(790		)	94,241		(2,508		)	263,330		(3,298		)
Private label residential MBS	—		—			27,079		(275		)	27,079		(275		)
Total MBS	$	169,089	$	(790	)	$	126,953	$	(2,822	)	$	296,042	$	(3,612	)
Total	$	169,089	$	(790	)	$	232,072	$	(8,393	)	$	401,161	$	(9,183	)

Investments Classified by Contractual Maturity Date

Redemption Terms. The amortized cost and fair value of HTM securities by contractual maturity as of June 30, 2018 and December 31, 2017 are presented below. Expected maturities of some securities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment fees.

(in thousands)	June 30, 2018				December 31, 2017
Year of Maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Non-MBS:
Due in one year or less	$	1,700,000	$	1,700,010	$	175,000	$	175,030
Due after one year through five years	10,685		10,760		—		—
Due after five years through ten years	28,305		27,677		42,010		41,211
Due after ten years	78,465		74,694		80,390		75,680
Total non-MBS	1,817,455		1,813,141		297,400		291,921
MBS	1,984,950		1,989,118		1,585,651		1,602,613
Total HTM securities	$	3,802,405	$	3,802,259	$	1,883,051	$	1,894,534

Schedule of Interest Rate Payment Terms For Investments

Interest Rate Payment Terms. The following table details interest rate payment terms at June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Amortized cost of HTM non-MBS:
Fixed-rate	$	1,700,000	$	175,000
Variable-rate	117,455		122,400
Total non-MBS	$	1,817,455	$	297,400
Amortized cost of HTM MBS:
Fixed-rate	$	1,291,410	$	787,395
Variable-rate	693,540		798,256
Total MBS	$	1,984,950	$	1,585,651
Total HTM securities	$	3,802,405	$	1,883,051

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Other-Than-Temporary Impairment (Tables)

6 Months Ended

Jun. 30, 2018

Other Than Temporary Impairment [Abstract]

Schedule of Other Than Temporarily Impaired Charges of Securities

The "Total OTTI securities" balances below summarize the Bank’s securities as of June 30, 2018 for which an OTTI has been recognized during the life of the security. The "Private label MBS with no OTTI" balances below represent AFS securities on which an OTTI was not taken. The sum of these two amounts reflects the total AFS private label MBS balance.

	OTTI Recognized During the Life of the Security
(in thousands)	Unpaid Principal Balance		Amortized Cost (1)		Fair Value
Private label residential MBS:
Prime	$	219,705	$	164,814	$	201,843
Alt-A	303,321		231,500		270,827
Total OTTI securities	523,026		396,314		472,670
Private label MBS with no OTTI	3,160		3,160		3,043
Total AFS private label MBS	$	526,186	$	399,474	$	475,713

Notes:

⁽¹⁾ Amortized cost includes adjustments made to the cost basis of an investment for accretion of discounts and/or amortization of premiums, collection of cash, and/or OTTI recognized.

Other than Temporary Impairment, Credit Losses Recognized in Earnings

The following table presents the rollforward of the amounts related to OTTI credit losses recognized during the life of the security for which a portion of the OTTI charges was recognized in AOCI for the three and six months ended June 30, 2018 and 2017.

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Beginning balance	$	205,938		$	230,450		$	210,875		$	236,460
Additions:
Additional OTTI credit losses for which an OTTI charge was previously recognized(1)	80			—			342			664
Reductions:
Securities sold and matured during the period	—			(191		)	—			(191		)
Increases in cash flows expected to be collected (accreted as interest income over the remaining lives of the applicable securities)	(4,913		)	(6,906		)	(10,112		)	(13,580		)
Ending balance	$	201,105		$	223,353		$	201,105		$	223,353

Notes:

⁽¹⁾ For the three months ended June 30, 2018 and 2017, additional OTTI credit losses for which an OTTI charge was previously recognized relate to all securities that were previously impaired prior to April 1 of the applicable year. For the six months ended June 30, 2018 and 2017, additional OTTI credit losses for which an OTTI charge was previously recognized relate to all securities that were previously impaired prior to January 1 of the applicable year.

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Advances (Tables)

6 Months Ended

Jun. 30, 2018

Advances [Abstract]

Schedule of Advances Classified by Contractual Maturity Date

The following table details interest rate payment terms for advances as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Fixed-rate – overnight	$	5,437,295	$	3,988,232
Fixed-rate – term:
Due in 1 year or less	17,731,754		15,998,268
Thereafter	18,302,045		14,685,606
Total fixed-rate	41,471,094		34,672,106
Variable-rate:
Due in 1 year or less	9,831,393		11,620,361
Thereafter	25,307,400		28,091,400
Total variable-rate	35,138,793		39,711,761
Total par value	$	76,609,887	$	74,383,867

The following table summarizes advances by the earlier of (i) year of contractual maturity or next call date and (ii) year of contractual maturity or next convertible date as of June 30, 2018 and December 31, 2017.

	Year of Contractual Maturity or Next Call Date				Year of Contractual Maturity or Next Convertible Date
(in thousands)	June 30, 2018		December 31, 2017		June 30, 2018		December 31, 2017
Due in 1 year or less	$	38,050,442	$	35,856,861	$	33,025,942	$	31,632,361
Due after 1 year through 2 years	13,061,672		11,771,189		13,871,172		11,780,689
Due after 2 years through 3 years	17,110,058		17,231,775		20,335,058		18,456,775
Due after 3 years through 4 years	5,460,173		7,445,920		6,470,173		10,445,920
Due after 4 years through 5 years	2,146,531		1,244,184		2,140,531		1,254,184
Thereafter	781,011		833,938		767,011		813,938
Total par value	$	76,609,887	$	74,383,867	$	76,609,887	$	74,383,867

The following table details the Bank’s advances portfolio by year of contractual maturity as of June 30, 2018 and December 31, 2017.

(dollars in thousands)	June 30, 2018					December 31, 2017
Year of Contractual Maturity	Amount			Weighted Average Interest Rate		Amount			Weighted Average Interest Rate
Due in 1 year or less	$	33,000,442		2.14	%	$	31,606,861		1.56	%
Due after 1 year through 2 years	13,876,672			2.20		11,786,189			1.63
Due after 2 years through 3 years	20,335,058			2.38		18,456,775			1.71
Due after 3 years through 4 years	6,470,173			2.43		10,445,920			1.85
Due after 4 years through 5 years	2,146,531			2.57		1,254,184			2.14
Thereafter	781,011			2.76		833,938			2.72
Total par value	76,609,887			2.26	%	74,383,867			1.67	%
Discount on AHP advances	—					(1		)
Deferred prepayment fees	(400		)			(613		)
Hedging adjustments	(269,476		)			(103,455		)
Total book value	$	76,340,011				$	74,279,798

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Mortgage Loans Held for Portfolio (Tables)

6 Months Ended

Jun. 30, 2018

Mortgage Loans on Real Estate [Abstract]

Schedule of Mortgage Loans Held for Portfolio

The following table details the par value of mortgage loans held for portfolio outstanding categorized by type as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Conventional loans	$	3,893,779	$	3,631,292
Government-guaranteed/insured loans	198,041		207,284
Total par value	$	4,091,820	$	3,838,576

The following table presents balances as of June 30, 2018 and December 31, 2017 for mortgage loans held for portfolio.

(in thousands)	June 30, 2018			December 31, 2017
Fixed-rate long-term single-family mortgages (1)	$	3,868,035		$	3,592,083
Fixed-rate medium-term single-family mortgages (1)	223,785			246,493
Total par value	4,091,820			3,838,576
Premiums	70,861			70,197
Discounts	(3,749		)	(3,418		)
Hedging adjustments	20,598			23,722
Total mortgage loans held for portfolio	$	4,179,530		$	3,929,077

Note:

⁽¹⁾ Long-term is defined as greater than 15 years. Medium-term is defined as a term of 15 years or less.

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Allowance for Credit Losses (Tables)

6 Months Ended

Jun. 30, 2018

Financing Receivable, Allowance for Credit Losses [Line Items]

Past Due Financing Receivables

Credit Quality Indicators -Mortgage Loans.Key credit quality indicators include the migration of past due loans, nonaccrual loans, loans in process of foreclosure, and impaired loans.

(in thousands)	June 30, 2018
Recorded investment: (1)	Conventional MPF Loans			Government-Guaranteed or Insured Loans (2)			Total
Past due 30-59 days	$	33,816		$	8,911		$	42,727
Past due 60-89 days	6,935			1,638			8,573
Past due 90 days or more	12,580			3,831			16,411
Total past due loans	$	53,331		$	14,380		$	67,711
Total current loans	3,942,640			190,484			4,133,124
Total loans	$	3,995,971		$	204,864		$	4,200,835
Other delinquency statistics:
In process of foreclosures, included above (3)	$	6,452		$	1,143		$	7,595
Serious delinquency rate (4)	0.3		%	1.9		%	0.4		%
Past due 90 days or more still accruing interest	$	—		$	3,831		$	3,831
Loans on nonaccrual status	$	15,530		$	—		$	15,530

(in thousands)	December 31, 2017
Recorded investment: (1)	Conventional MPF Loans			Government-Guaranteed or Insured Loans (2)			Total
Past due 30-59 days	$	39,677		$	11,390		$	51,067
Past due 60-89 days	7,039			2,887			9,926
Past due 90 days or more	17,738			4,959			22,697
Total past due loans	$	64,454		$	19,236		$	83,690
Total current loans	3,670,218			195,382			3,865,600
Total loans	$	3,734,672		$	214,618		$	3,949,290
Other delinquency statistics:
In process of foreclosures, included above (3)	$	9,978		$	1,055		$	11,033
Serious delinquency rate (4)	0.5		%	2.3		%	0.6		%
Past due 90 days or more still accruing interest	$	—		$	4,959		$	4,959
Loans on nonaccrual status	$	20,695		$	—		$	20,695

Notes:

⁽¹⁾ The recorded investment in a loan is the unpaid principal balance, adjusted for charge-offs of estimated losses, accrued interest, net deferred loan fees or costs, unamortized premiums, unaccreted discounts and adjustments for hedging. The recorded investment is not net of any valuation allowance.

⁽²⁾ The Bank has not recorded any allowance for credit losses on government-guaranteed or -insured mortgage loans at June 30, 2018, and December 31, 2017.

⁽³⁾ 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 dependent on their delinquency status.

⁽⁴⁾ Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total loan portfolio class.

Individually Evaluated Impared Loan Statistic By Product Level

Individually Evaluated Impaired Loans -Mortgage Loans. Information regarding individually evaluated impaired loans is as follows. As indicated above, these loans include impaired loans considered collateral-dependent.

	June 30, 2018
(in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance for Credit Losses
With no related allowance:
Conventional MPF loans	$	30,001	$	29,657	$	—
With a related allowance:
Conventional MPF loans	19,436		19,158		6,867
Total:
Conventional MPF loans	$	49,437	$	48,815	$	6,867

	December 31, 2017
(in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance for Credit Losses
With no related allowance:
Conventional MPF loans	$	30,824	$	30,497	$	—
With a related allowance:
Conventional MPF loans	21,681		21,360		5,218
Total:
Conventional MPF loans	$	52,505	$	51,857	$	5,218

Mortgage loans held for portfolio, net

Financing Receivable, Allowance for Credit Losses [Line Items]

Allowance for Credit Losses on Financing Receivables

(in thousands)	June 30, 2018		December 31, 2017
Ending balance, individually evaluated for impairment	$	6,867	$	5,218
Ending balance, collectively evaluated for impairment	1,187		736
Total allowance for credit losses	$	8,054	$	5,954
Recorded investment balance, end of period:
Individually evaluated for impairment, with or without a related allowance	$	49,437	$	52,505
Collectively evaluated for impairment	3,946,534		3,682,167
Total recorded investment	$	3,995,971	$	3,734,672

Rollforward of Allowance for Credit Losses -Mortgage Loans - Conventional MPF.

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Balance, beginning of period	$	8,241		$	6,204		$	5,954		$	6,231
(Charge-offs) Recoveries, net (1)	(415		)	209			(406		)	(10		)
Provision (benefit) for credit losses	228			(72		)	2,506			120
Balance, June 30	$	8,054		$	6,341		$	8,054		$	6,341

Notes:

⁽¹⁾ Net charge-offs that the Bank does not expect to recover through CE receivable.

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Derivatives and Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following tables summarize the notional amount and fair value of derivative instruments and total derivatives 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.

	June 30, 2018
(in thousands)	Notional Amount of Derivatives		Derivative Assets		Derivative Liabilities
Derivatives designated as hedging instruments:
Interest rate swaps	$	35,917,784	$	2,323	$	72,707
Derivatives not designated as hedging instruments:
Interest rate swaps	$	10,497,743	$	12,906	$	32,184
Interest rate caps or floors	6,485,000		3,057		—
Mortgage delivery commitments	35,814		39		22
Total derivatives not designated as hedging instruments:	$	17,018,557	$	16,002	$	32,206
Total derivatives before netting and collateral adjustments	$	52,936,341	$	18,325	$	104,913
Netting adjustments and cash collateral (1)			97,208		(89,886		)
Derivative assets and derivative liabilities as reported on the Statement of   Condition			$	115,533	$	15,027

	December 31, 2017 (2)
(in thousands)	Notional Amount of Derivatives		Derivative Assets		Derivative Liabilities
Derivatives designated as hedging instruments:
Interest rate swaps	$	30,017,995	$	4,185	$	45,302
Derivatives not designated as hedging instruments:
Interest rate swaps	$	8,285,437	$	3,727	$	17,423
Interest rate caps	6,455,000		1,464		—
Mortgage delivery commitments	25,487		4		61
Total derivatives not designated as hedging instruments:	$	14,765,924	$	5,195	$	17,484
Total derivatives before netting and collateral adjustments	$	44,783,919	$	9,380	$	62,786
Netting adjustments and cash collateral (1)			71,376		(43,265		)
Derivative assets and derivative liabilities as reported on the Statement of   Condition			$	80,756	$	19,521

Note:

⁽¹⁾ Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions, cash collateral and related accrued interest held or placed with the same clearing agent and/or counterparties. Cash collateral posted and related accrued interest was $188.0 million and $114.6 million at June 30, 2018 and December 31, 2017, respectively. Cash collateral received was immaterial for both June 30, 2018 and December 31, 2017.

⁽²⁾ To conform with current presentation, $11.2 million of variation margin received from the Clearing House has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

Derivative Instruments, Gain (Loss)

The following table presents the components of net gains (losses) on derivatives and hedging activities as presented in the Statement of Income.

	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Derivatives designated as hedging instruments:
Interest rate swaps (1)	$	(1,780	)	$	(455	)	$	(579	)	$	203
Derivatives not designated as hedging instruments:
Economic hedges:
Interest rate swaps	$	10,339		$	(848	)	$	16,136		$	4,340
Interest rate caps or floors	296			(2,069		)	1,273			(2,645		)
Net interest settlements	(3,576		)	(745		)	(6,159		)	(1,609		)
Mortgage delivery commitments	(444		)	(390		)	(1,336		)	(427		)
Other	4			4			12			10
Total net gains (losses) related to derivatives not designated as hedging instruments	$	6,619		$	(4,048	)	$	9,926		$	(331	)
Other - price alignment amount on derivatives for which variation margin is characterized as a daily settled contract	(780		)	208			(1,176		)	263
Net gains (losses) on derivatives and hedging activities	$	4,059		$	(4,295	)	$	8,171		$	135

Note:

⁽¹⁾Pertains to totalnet gains (losses) for fair value hedge ineffectiveness.

Schedule Of Derivative Instruments By Type Gain Loss In Statement Of Financial Performance

The following tables present, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships and the impact of those derivatives on the Bank’s net interest income for the three and six months ended June 30, 2018 and 2017.

(in thousands)	Gains/(Losses) on Derivative			Gains/(Losses) on Hedged Item			Net Fair Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Three months ended June 30, 2018
Hedged item type:
Advances	$	42,622		$	(42,410	)	$	212		$	10,648
Consolidated obligations – bonds	(6,685		)	3,961			(2,724		)	(23,524		)
AFS securities	13,243			(12,511		)	732			(908		)
Total	$	49,180		$	(50,960	)	$	(1,780	)	$	(13,784	)
Six months ended June 30, 2018
Hedged item type:
Advances	$	166,415		$	(165,953	)	$	462		$	7,839
Consolidated obligations – bonds	(96,457		)	92,864			(3,593		)	(31,307		)
AFS securities	53,895			(51,343		)	2,552			(3,592		)
Total	$	123,853		$	(124,432	)	$	(579	)	$	(27,060	)

(in thousands)	Gains/(Losses) on Derivative			Gains/(Losses) on Hedged Item			Net Fair Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Three months ended June 30, 2017
Hedged item type:
Advances	$	(20,918	)	$	20,815		$	(103	)	$	(7,989	)
Consolidated obligations – bonds	23,457			(23,001		)	456			2,478
AFS securities	(13,686		)	12,878			(808		)	(4,368		)
Total	$	(11,147	)	$	10,692		$	(455	)	$	(9,879	)
Six months ended June 30, 2017
Hedged item type:
Advances	$	(5,005	)	$	4,898		$	(107	)	$	(17,963	)
Consolidated obligations – bonds	12,306			(11,325		)	981			8,827
AFS securities	(7,411		)	6,740			(671		)	(9,273		)
Total	$	(110	)	$	313		$	203		$	(18,409	)

Note:

⁽¹⁾ Represents the net interest settlements on derivatives in fair value hedge relationships presented in the interest income/expense line item of the respective hedged item. These amounts do not include $(1.1) million and $(0.9) million for the second quarter of 2018 and 2017, respectively, and $(1.7) million and $(1.6) million for the six months endedJune 30, 2018 and 2017, respectively, of amortization/accretion of the basis adjustment related to discontinued fair value hedging relationships.

Offsetting Assets

Bank presents derivative instruments, related cash collateral received or pledged, and associated accrued interest on a net basis by clearing agent and/or by counterparty. The Bank has analyzed the enforceability of offsetting rights incorporated in its cleared derivative transactions and 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 Clearing Houses or the Bank’s clearing agent, or both. Based on this analysis, the Bank nets derivative fair values on all of its transactions through a particular clearing agent with a particular Clearing House (including settled variation margin) into one net asset or net liability exposure.  Initial margin posted to the clearing house is presented as a derivative asset.

The following tables present separately the fair value of derivative instruments meeting or not meeting netting requirements. Gross recognized amounts do not include the related collateral received from or pledged to counterparties. Net amounts reflect the adjustments of collateral received from or pledged to counterparties.

	Derivative Assets
(in thousands)	June 30, 2018			December 31, 2017 (2)
Derivative instruments meeting netting requirements:
Gross recognized amount:
Uncleared derivatives	$	17,489		$	5,875
Cleared derivatives	797			3,501
Total gross recognized amount	18,286			9,376
Gross amounts of netting adjustments and cash collateral
Uncleared derivatives	(14,575		)	(5,246		)
Cleared derivatives	111,783			76,622
Total gross amounts of netting adjustments and cash collateral	97,208			71,376
Net amounts after netting adjustments and cash collateral
Uncleared derivatives	2,914			629
Cleared derivatives	112,580			80,123
Total net amounts after netting adjustments and cash collateral	115,494			80,752
Derivative instruments not meeting netting requirements: (1)
Uncleared derivatives	39			4
Cleared derivatives	—			—
Total derivative instruments not meeting netting requirements:	39			4
Total derivative assets:
Uncleared derivatives	2,953			633
Cleared derivatives	112,580			80,123
Total derivative assets as reported in the Statement of Condition	115,533			80,756
Net unsecured amount:
Uncleared derivatives	2,953			633
Cleared derivatives	112,580			80,123
Total net unsecured amount	$	115,533		$	80,756

	Derivative Liabilities
(in thousands)	June 30, 2018			December 31, 2017 (2)
Derivative instruments meeting netting requirements:
Gross recognized amount:
Uncleared derivatives	$	99,472		$	47,315
Cleared derivatives	5,419			15,409
Total gross recognized amount	104,891			62,724
Gross amounts of netting adjustments and cash collateral
Uncleared derivatives	(89,089		)	(39,063		)
Cleared derivatives	(797		)	(4,202		)
Total gross amounts of netting adjustments and cash collateral	(89,886		)	(43,265		)
Net amounts after netting adjustments and cash collateral
Uncleared derivatives	10,383			8,252
Cleared derivatives	4,622			11,207
Total net amounts after netting adjustments and cash collateral	15,005			19,459
Derivative instruments not meeting netting requirements: (1)
Uncleared derivatives	22			62
Cleared derivatives	—			—
Total derivative instruments not meeting netting requirements:	22			62
Total derivative liabilities
Uncleared derivatives	10,405			8,314
Cleared derivatives	4,622			11,207
Total derivative liabilities as reported in the Statement of Condition	15,027			19,521
Net unsecured amount:
Uncleared derivatives	10,405			8,314
Cleared derivatives	4,622			11,207
Total net unsecured amount	$	15,027		$	19,521

Note:

⁽¹⁾ Represents derivatives that are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments).

⁽²⁾ To conform with current presentation, $11.2 million of variation margin received from the Clearing House for daily settled contracts has been allocated to the individual instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

Offsetting Liabilities

	Derivative Liabilities
(in thousands)	June 30, 2018			December 31, 2017 (2)
Derivative instruments meeting netting requirements:
Gross recognized amount:
Uncleared derivatives	$	99,472		$	47,315
Cleared derivatives	5,419			15,409
Total gross recognized amount	104,891			62,724
Gross amounts of netting adjustments and cash collateral
Uncleared derivatives	(89,089		)	(39,063		)
Cleared derivatives	(797		)	(4,202		)
Total gross amounts of netting adjustments and cash collateral	(89,886		)	(43,265		)
Net amounts after netting adjustments and cash collateral
Uncleared derivatives	10,383			8,252
Cleared derivatives	4,622			11,207
Total net amounts after netting adjustments and cash collateral	15,005			19,459
Derivative instruments not meeting netting requirements: (1)
Uncleared derivatives	22			62
Cleared derivatives	—			—
Total derivative instruments not meeting netting requirements:	22			62
Total derivative liabilities
Uncleared derivatives	10,405			8,314
Cleared derivatives	4,622			11,207
Total derivative liabilities as reported in the Statement of Condition	15,027			19,521
Net unsecured amount:
Uncleared derivatives	10,405			8,314
Cleared derivatives	4,622			11,207
Total net unsecured amount	$	15,027		$	19,521

Note:

⁽¹⁾ Represents derivatives that are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments).

⁽²⁾ To conform with current presentation, $11.2 million of variation margin received from the Clearing House for daily settled contracts has been allocated to the individual instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

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Consolidated Obligations (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Short-term and Long-term Debt [Line Items]

Schedule of Maturities of Debt

The following table presents a summary of the Bank’s consolidated obligation bonds outstanding by year of contractual maturity as of June 30, 2018 and December 31, 2017.

	June 30, 2018				December 31, 2017
(dollars in thousands) Year of Contractual Maturity	Amount		Weighted Average Interest Rate		Amount		Weighted Average Interest Rate
Due in 1 year or less	$	42,085,735	1.87	%	$	28,357,115	1.33	%
Due after 1 year through 2 years	14,755,600		1.89		17,184,710		1.44
Due after 2 years through 3 years	3,647,270		1.98		4,062,040		1.78
Due after 3 years through 4 years	2,400,795		2.27		2,357,115		2.11
Due after 4 years through 5 years	1,820,315		2.43		1,701,520		2.12
Thereafter	4,147,850		2.59		3,937,150		2.41
Index amortizing notes	—		—		17,593		5.39
Total par value	$	68,857,565	1.95	%	$	57,617,243	1.53	%

The following table presents consolidated obligation bonds outstanding by the earlier of contractual maturity or next call date as of June 30, 2018 and December 31, 2017.

(in thousands) Year of Contractual Maturity or Next Call Date	June 30, 2018		December 31, 2017
Due in 1 year or less	$	48,222,735	$	33,384,115
Due after 1 year through 2 years	14,040,600		17,061,710
Due after 2 years through 3 years	2,915,270		3,587,040
Due after 3 years through 4 years	1,692,795		1,477,115
Due after 4 years through 5 years	1,112,315		1,236,520
Thereafter	873,850		853,150
Index amortizing notes	—		17,593
Total par value	$	68,857,565	$	57,617,243

Schedule of Long-term Debt by Call Feature

The following table presents the Bank’s consolidated obligation bonds outstanding between noncallable and callable as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Noncallable	$	62,535,565	$	52,328,243
Callable	6,322,000		5,289,000
Total par value	$	68,857,565	$	57,617,243

The following table details interest rate payment terms for the Bank's consolidated obligation bonds as of June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018			December 31, 2017
Par value of consolidated bonds:
Fixed-rate	$	27,184,715		$	26,714,743
Step-up	1,850,000			1,675,000
Floating-rate	39,432,850			28,837,500
Conversion bonds - fixed to floating	390,000			390,000
Total par value	68,857,565			57,617,243
Bond premiums	67,714			65,198
Bond discounts	(9,144		)	(7,927		)
Concession fees	(6,971		)	(6,417		)
Hedging adjustments	(227,297		)	(134,375		)
Total book value	$	68,681,867		$	57,533,722

Schedule of Short-term Debt

The following table details the Bank’s consolidated obligation discount notes as of June 30, 2018 and December 31, 2017.

(dollars in thousands)	June 30, 2018			December 31, 2017
Book value	$	26,988,892		$	36,193,289
Par value	27,060,905			36,253,187
Weighted average interest rate (1)	1.89		%	1.24		%

Note:

⁽¹⁾ Represents an implied rate.

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Capital (Tables)

6 Months Ended

Jun. 30, 2018

Capital [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The following table demonstrates the Bank’s compliance with the regulatory capital requirements at June 30, 2018 and December 31, 2017.

	June 30, 2018						December 31, 2017
(dollars in thousands)	Required			Actual			Required			Actual
Regulatory capital requirements:
RBC	$	1,350,377		$	5,170,681		$	1,052,052		$	4,821,638
Total capital-to-asset ratio	4.0		%	5.1		%	4.0		%	4.8		%
Total regulatory capital	4,072,573			5,170,681			3,986,520			4,821,638
Leverage ratio	5.0		%	7.6		%	5.0		%	7.3		%
Leverage capital	5,090,716			7,756,021			4,983,150			7,232,457

Schedule of Concentration in Capital Stock Held

(dollars in thousands)	June 30, 2018
Member (1)	Capital Stock		% of Total
PNC Bank, N.A., Pittsburgh, PA	$	1,108,150	28.0	%
Ally Bank, Midvale, UT	789,532		20.0
Chase Bank USA, N.A., Wilmington, DE	505,029		12.8

(dollars in thousands)	December 31, 2017
Member (1)	Capital Stock		% of Total
PNC Bank, N.A., Pittsburgh, PA	$	910,400	24.8	%
Ally Bank, Midvale, UT	745,387		20.3
Chase Bank USA, N.A., Wilmington, DE	589,254		16.1

Note:

⁽¹⁾ For Bank membership purposes, the principal place of business for PNC Bank is Pittsburgh, PA. For Ally Bank, the principal place of business is Horsham, PA.

Schedule of Mandatorily Redeemable Capital Stock by Maturity Date

The following table shows the amount of mandatorily redeemable capital stock by contractual year of redemption at June 30, 2018 and December 31, 2017.

(in thousands)	June 30, 2018		December 31, 2017
Due in 1 year or less	$	326	$	—
Due after 1 year through 2 years	—		342
Due after 2 years through 3 years	3,982		4,256
Due after 3 years through 4 years	—		—
Due after 4 years through 5 years	222		515
Total	$	4,530	$	5,113

The following table provides the related dollar amounts for activities recorded in mandatorily redeemable capital stock during the six months ended June 30, 2018 and 2017.

	Six months ended June 30,
(in thousands)	2018			2017
Balance, beginning of the period	$	5,113		$	5,216
Capital stock subject to mandatory redemption reclassified from capital	17			269
Redemption/repurchase of mandatorily redeemable stock	(600		)	(466		)
Balance, end of the period	$	4,530		$	5,019

Schedule of Dividends Paid [Table Text Block]

Dividends paid through the first and second quarters of 2018 and 2017 are presented in the table below.

	Dividend - Annual Yield
	2018		2017
	Membership	Activity	Membership	Activity
February	3.5%	6.75%	2.0%	5.0%
April	3.5%	6.75%	2.0%	5.0%

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table summarizes the changes in AOCI for the three months ended June 30, 2018 and 2017.

(in thousands)	Net Unrealized Gains(Losses) on AFS		Non-credit OTTI Gains(Losses) on AFS			Non-credit OTTI Gains(Losses) on HTM		Net Unrealized Gains (Losses) on Hedging Activities			Pension and Post-Retirement Plans			Total
March 31, 2017	$	18,540	$	65,801		$	—	$	216		$	(2,430	)	$	82,127
Other comprehensive income (loss) before reclassification:
Net unrealized gains	31,654		8,766			—		—			—			40,420
Net change in fair value of OTTI securities	—		(437		)	—		—			—			(437		)
Reclassifications from OCI to net income:
Amortization on hedging activities	—		—			—		(4		)	—			(4		)
Pension and post-retirement	—		—			—		—			86			86
June 30, 2017	$	50,194	$	74,130		$	—	$	212		$	(2,344	)	$	122,192
March 31, 2018	$	26,595	$	73,128		$	—	$	192		$	(3,279	)	$	96,636
Other comprehensive income (loss) before reclassification:
Net unrealized gains	714		3,149			—		—			—			3,863
Reclassifications from OCI to net income:
Non-credit OTTI to credit OTTI	—		80			—		—			—			80
Amortization on hedging activities	—		—			—		(4		)	—			(4		)
Pension and post-retirement	—		—			—		—			176			176
June 30, 2018	$	27,309	$	76,357		$	—	$	188		$	(3,103	)	$	100,751

The following table summarizes the changes in AOCI for the six months ended June 30, 2018 and 2017.

(in thousands)	Net Unrealized Gains(Losses) on AFS			Non-credit OTTI Gains(Losses) on AFS			Non-credit OTTI Gains(Losses) on HTM		Net Unrealized Gains (Losses) on Hedging Activities			Pension and Post-Retirement Plans			Total
December 31, 2016	$	(12,835	)	$	67,424		$	—	$	223		$	(2,516	)	$	52,296
Other comprehensive income (loss) before reclassification:
Net unrealized gains (losses)	63,029			7,680			—		—			—			70,709
Net change in fair value of OTTI securities	—			(1,638		)	—		—			—			(1,638		)
Reclassifications from OCI to net income:
Noncredit OTTI to credit OTTI	—			664			—		—			—			664
Amortization on hedging activities	—			—			—		(11		)	—			(11		)
Pension and post-retirement	—			—			—		—			172			172
June 30, 2017	$	50,194		$	74,130		$	—	$	212		$	(2,344	)	$	122,192
December 31, 2017	$	41,210		$	72,953		$	—	$	200		$	(3,399	)	$	110,964
Other comprehensive income (loss) before reclassification:
Net unrealized gains (losses)	(13,901		)	3,062			—		—			—			(10,839		)
Reclassifications from OCI to net income:
Noncredit OTTI to credit OTTI	—			342			—		—			—			342
Amortization on hedging activities	—			—			—		(12		)	—			(12		)
Pension and post-retirement	—			—			—		—			296			296
June 30, 2018	$	27,309		$	76,357		$	—	$	188		$	(3,103	)	$	100,751

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Transactions with Related Parties (Tables)

6 Months Ended

Jun. 30, 2018

Related Party Transaction [Line Items]

Related Party Transactions, by Balance Sheet Grouping

The following table includes significant outstanding related party member-activity balances.

(in thousands)	June 30, 2018		December 31, 2017
Advances	$	55,156,375	$	56,819,556
Letters of credit (1)	4,372,957		4,612,680
MPF loans	622,014		696,204
Deposits	17,580		32,420
Capital stock	2,581,823		2,470,117

Note:

⁽¹⁾ Letters of credit are off-balance sheet commitments.

Related Party Transactions, Income Statement

The following table summarizes the effects on the Statement of Income corresponding to the related party member balances above. Amounts related to prepayment of fess on advances and interest expense on deposits were immaterial for the periods presented.

	Three months ended June 30,				Six months ended June 30,
(in thousands)	2018		2017		2018		2017
Interest income on advances (1)	$	308,657	$	166,669	$	552,449	$	326,594
Interest income on MPF loans	8,542		10,386		17,485		21,568
Letters of credit fees	1,379		1,674		2,951		3,536

Note:

⁽¹⁾ For the three and six months ended June 30, 2018, balances include contractual interest income of $299.7 million and $545.1 million, net interest settlements on derivatives in fair value hedge relationships of $8.9 million and $7.2 million and total amortization of basis adjustments was immaterial and $0.1 million. For the three and six months ended June 30, 2017, balances include contractual interest income of $170.8 million and $334.6 million, net interest settlements on derivatives in fair value hedge relationships of $(4.2) million and $(9.4) million and total amortization of basis adjustments was $0.1 million and $1.4 million.

Schedule of Related Party Transactions, Mortgage Loans

The following table includes the MPF activity of the related party members.

	Three months ended June 30,				Six months ended June 30,
(in thousands)	2018		2017		2018		2017
Total MPF loan volume purchased	$	1,569	$	6,501	$	5,438	$	10,031

FHLBank of Chicago [Member]

Related Party Transaction [Line Items]

Schedule of Related Party Transactions, Mortgage Loans

The following table summarizes the effect of the MPF activities with FHLBank of Chicago.

	Three months ended June 30,				Six months ended June 30,
(in thousands)	2018		2017		2018		2017
Servicing fee expense	$	747	$	747	$	1,458	$	1,176

(in thousands)	June 30, 2018		December 31, 2017
Interest-bearing deposits maintained with FHLBank of Chicago	$	5,888	$	5,340

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Estimated Fair Values (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The carrying value and estimated fair value of the Bank’s financial instruments at June 30, 2018 and December 31, 2017 are presented in the table below.

Fair Value Summary Table
	June 30, 2018
(in thousands)	Carrying Value		Level 1		Level 2		Level 3		Netting Adjustments and Cash Collateral (1)			Estimated Fair Value
Assets:
Cash and due from banks	$	161,924	$	161,924	$	—	$	—	$	—		$	161,924
Interest-bearing deposits	620,888		615,000		5,888		—		—			620,888
Federal funds sold	5,975,000		—		5,974,931		—		—			5,974,931
Securities purchased under agreement to resell (2)	1,500,000		—		1,499,981		—		—			1,499,981
Trading securities	535,095		—		535,095		—		—			535,095
AFS securities	8,318,998		—		7,843,285		475,713		—			8,318,998
HTM securities	3,802,405		—		3,560,033		242,226		—			3,802,259
Advances	76,340,011		—		76,318,912		—		—			76,318,912
Mortgage loans held for portfolio, net	4,171,476		—		4,076,595		—		—			4,076,595
BOB loans, net	16,214		—		—		16,214		—			16,214
Accrued interest receivable	209,555		—		209,555		—		—			209,555
Derivative assets	115,533		—		18,325		—		97,208			115,533
Liabilities:
Deposits	$	551,092	$	—	$	551,092	$	—	$	—		$	551,092
Discount notes	26,988,892		—		26,985,801		—		—			26,985,801
Bonds	68,681,867		—		68,441,441		—		—			68,441,441
Mandatorily redeemable capital stock (3)	4,530		4,607		—		—		—			4,607
Accrued interest payable (3)	170,415		—		170,338		—		—			170,338
Derivative liabilities	15,027		—		104,913		—		(89,886		)	15,027

	December 31, 2017
(in thousands)	Carrying Value		Level 1		Level 2		Level 3		Netting Adjustments and Cash Collateral (1)			Estimated Fair Value
Assets:
Cash and due from banks	$	3,414,992	$	3,414,992	$	—	$	—	$	—		$	3,414,992
Interest-bearing deposits	280,340		275,000		5,340		—		—			280,340
Federal funds sold	5,650,000		—		5,649,868		—		—			5,649,868
Securities purchased under agreement to resell (2)	500,000		—		499,999		—		—			499,999
Trading securities	399,296		9,657		389,639		—		—			399,296
AFS securities	9,044,387		2,015		8,517,829		524,543		—			9,044,387
HTM securities	1,883,051		—		1,611,151		283,383		—			1,894,534
Advances	74,279,798		—		74,242,369		—		—			74,242,369
Mortgage loans held for portfolio, net	3,923,123		—		3,921,976		—		—			3,921,976
BOB loans, net	14,083		—		—		14,083		—			14,083
Accrued interest receivable	164,459		—		164,459		—		—			164,459
Derivative assets (4)	80,756		—		9,380		—		71,376			80,756
Liabilities:
Deposits	$	538,076	$	—	$	538,076	$	—	$	—		$	538,076
Discount notes	36,193,289		—		36,185,419		—		—			36,185,419
Bonds	57,533,722		—		57,439,681		—		—			57,439,681
Mandatorily redeemable capital stock (3)	5,113		5,201		—		—		—			5,201
Accrued interest payable (3)	118,473		—		118,384		—		—			118,384
Derivative liabilities (4)	19,521		—		62,786		—		(43,265		)	19,521

Notes:

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

⁽²⁾ Based on the fair value of the related collateral held, the securities purchased under agreements to resell were fully collateralized for the periods presented. There were no offsetting liabilities related to these securities at June 30, 2018 and December 31, 2017. These instruments’ maturity term is overnight.

⁽³⁾ The estimated fair value amount for the mandatorily redeemable capital stock line item includes accrued dividend interest; this amount is excluded from the estimated fair value for the accrued interest payable line item.

⁽⁴⁾ To conform with current presentation, $11.2 million in variation margin received on cleared derivatives 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 Measurements

Fair Value Measurements. The following tables present, for each hierarchy level, the Bank’s assets and liabilities that are measured at fair value on a recurring or non-recurring basis on its Statement of Condition at June 30, 2018 and December 31, 2017. The Bank measures certain mortgage loans held for portfolio at fair value when a charge-off is recognized and subsequently when the fair value less costs to sell is lower than the carrying amount. Real estate owned is measured using fair value when the assets' fair value less costs to sell is lower than the carrying amount.

	June 30, 2018
(in thousands)	Level 1		Level 2		Level 3		Netting Adjustment and Cash Collateral(1)			Total
Recurring fair value measurements - Assets
Trading securities:
Non MBS:
U.S. Treasury obligations	$	—	$	97,972	$	—	$	—		$	97,972
GSE and TVA obligations	—		437,123		—		—			437,123
Total trading securities	$	—	$	535,095	$	—	$	—		$	535,095
AFS securities:
Non MBS:
GSE and TVA obligations	$	—	$	2,427,065	$	—	$	—		$	2,427,065
State or local agency obligations	—		260,972		—		—			260,972
MBS:
U.S. obligations single family MBS	—		165,728		—		—			165,728
GSE single-family MBS	—		2,521,069		—		—			2,521,069
GSE multifamily MBS	—		2,468,451		—		—			2,468,451
Private label residential MBS	—		—		475,713		—			475,713
Total AFS securities	$	—	$	7,843,285	$	475,713	$	—		$	8,318,998
Derivative assets:
Interest rate related	$	—	$	18,286	$	—	$	97,208		$	115,494
Mortgage delivery commitments	—		39		—		—			39
Total derivative assets	$	—	$	18,325	$	—	$	97,208		$	115,533
Total recurring assets at fair value	$	—	$	8,396,705	$	475,713	$	97,208		$	8,969,626
Recurring fair value measurements - Liabilities
Derivative liabilities:
Interest rate related	$	—	$	104,891	$	—	$	(89,886	)	$	15,005
Mortgage delivery commitments	—		22		—		—			22
Total recurring liabilities at fair value (3)	$	—	$	104,913	$	—	$	(89,886	)	$	15,027
Non-recurring fair value measurements - Assets
Impaired mortgage loans held for portfolio	$	—	$	—	$	5,530	$	—		$	5,530
Real estate owned	—		—		4,536		—			4,536
Total non-recurring assets at fair value	$	—	$	—	$	10,066	$	—		$	10,066

	December 31, 2017
(in thousands)	Level 1		Level 2		Level 3		Netting Adjustment and Cash Collateral(2)			Total
Recurring fair value measurements - Assets
Trading securities:
Non MBS:
GSE and TVA obligations	$	—	$	389,639	$	—	$	—		$	389,639
Mutual funds	9,657		—		—		—			9,657
Total trading securities	$	9,657	$	389,639	$	—	$	—		$	399,296
AFS securities:
Non MBS:
GSE and TVA obligations	$	—	$	2,820,779	$	—	$	—		2,820,779
State or local agency obligations	—		269,364		—		—			269,364
Mutual funds	2,015		—		—		—			2,015
MBS:
U.S. obligations single family MBS	—		179,273		—		—			179,273
GSE single-family MBS	—		2,665,795		—		—			2,665,795
GSE multifamily MBS	—		2,582,618		—		—			2,582,618
Private label residential MBS	—		—		524,543		—			524,543
Total AFS securities	$	2,015	$	8,517,829	$	524,543	$	—		$	9,044,387
Derivative assets:
Interest rate related (2)	$	—	$	9,376	$	—	$	71,376		$	80,752
Mortgage delivery commitments	—		4		—		—			4
Total derivative assets	$	—	$	9,380	$	—	$	71,376		$	80,756
Total recurring assets at fair value	$	11,672	$	8,916,848	$	524,543	$	71,376		$	9,524,439
Recurring fair value measurements - Liabilities
Derivative liabilities:
Interest rate related (2)	$	—	$	62,725	$	—	$	(43,265	)	$	19,460
Mortgage delivery commitments	—		61		—		—			61
Total recurring liabilities at fair value (3)	$	—	$	62,786	$	—	$	(43,265	)	$	19,521
Non-recurring fair value measurements - Assets
Impaired mortgage loans held for portfolio	$	—	$	—	$	17,329	$	—		$	17,329
Real estate owned	—		—		8,096		—			8,096
Total non-recurring assets at fair value	$	—	$	—	$	25,425	$	—		$	25,425

Notes:

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

⁽²⁾ To conform with current presentation, $11.2 million in variation margin received on cleared derivatives has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with Netting Adjustments and Cash Collateral.

⁽³⁾ Derivative liabilities represent the total liabilities at fair value.

Rollforward of Level 3 Assets and Liabilities

Level 3 Disclosures for all Assets and Liabilities That Are Measured at Fair Value on a Recurring Basis. The following table presents a reconciliation of all assets and liabilities that are measured at fair value on the Statement of Condition using significant unobservable inputs (Level 3) for the three and six months ended June 30, 2018 and 2017. For instruments carried at fair value, the Bank reviews the fair value hierarchy classifications each quarter. Changes in the observability of the valuation attributes may result in a reclassification of certain financial assets or liabilities. Such reclassifications are reported as transfers in/out at fair value in the quarter in which the changes occur. Transfers are reported as of the beginning of the period. There were no Level 3 transfers during the first six months of 2018 or 2017.

	AFS Private Label MBS-Residential
	Three months ended June 30,						Six months ended June 30,
(in thousands)	2018			2017			2018			2017
Balance, beginning of period	$	503,647		$	642,015		$	524,543		$	673,976
Total gains (losses) (realized/unrealized) included in:
Accretion of credit losses in interest income	3,794			5,345			7,579			10,466
Net OTTI losses, credit portion	(80		)	—			(342		)	(664		)
Net unrealized gains on AFS in OCI	8			25			30			91
Reclassification of non-credit portion included in net income	80			—			342			664
Net change in fair value on OTTI AFS in OCI	—			(437		)	—			(1,638		)
Unrealized gains on OTTI AFS in OCI	3,149			8,766			3,062			7,680
Purchases, issuances, sales, and settlements:
Settlements	(34,885		)	(45,338		)	(59,501		)	(80,199		)
Balance at June 30	$	475,713		$	610,376		$	475,713		$	610,376
Total amount of gains for the periods presented included in earnings attributable to the change in unrealized gains or losses relating to assets and liabilities still held at June 30	$	3,714		$	4,852		$	7,237		$	9,296

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Off-Balance Sheet Commitments

The following table presents the Bank's various off-balance sheet commitments which are described in detail below.

(in thousands)	June 30, 2018						December 31, 2017
Notional amount	Expiration Date Within One Year		Expiration Date After One Year		Total		Total
Standby letters of credit outstanding (1) (2)	$	18,638,742	$	409	$	18,639,151	$	18,965,939
Commitments to fund additional advances and BOB loans	15,684		—		15,684		43,972
Commitments to fund or purchase mortgage loans	35,814		—		35,814		25,487
Unsettled consolidated obligation bonds, at par	1,863,000		—		1,863,000		1,076,200
Unsettled consolidated obligation discount notes, at par	—		—		—		565,000

Notes:

⁽¹⁾ Excludes approved requests to issue future standby letters of credit of $165.9 million and $44.1 million at June 30, 2018 and December 31, 2017, respectively.

⁽²⁾ Letters of credit in the amount of $2.9 billion and $2.2 billion at June 30, 2018 and December 31, 2017, respectively, have annual renewal language that, as long as both parties agree, permit the letter of credit to be renewed for an additional year with a maximum renewal period of approximately 5 years.

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Background Information (Details)	Jun. 30, 2018 Banks
Nature of Operations [Line Items]
Number of Federal Home Loan Banks	11
Minimum
Nature of Operations [Line Items]
Related Party Transaction, Definition Of Related Party, Capital Stock, Percent	10.00%

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Trading Securities (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities		$ 535,095	$ 399,296
Mutual Funds [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	[1]	0	9,657
U.S. Treasury obligations
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities		97,972	0
GSE and TVA obligations [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities		$ 437,123	$ 389,639

[1] Reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01, effective January 1, 2018. Refer to Note 1 in this Form 10-Q.

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Trading Securities (Net Gains (Losses) on Trading Securities) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Trading Securities [Abstract]
Net unrealized gains (losses) on trading securities held at period-end	$ (2,710)	$ 5,321	$ (11,402)	$ 7,606
Net realized gains (losses) on trading securities sold/matured during the period	0	0	0	0
Net gains (losses) on trading securities	$ (2,710)	$ 5,321	$ (11,402)	$ 7,606

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Available-for-Sale (AFS) Securities (Summary of Available-for-Sale Securities) (Details) - USD ($)		Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	$ 8,215,332,000	$ 8,930,224,000
OTTI Recognized in AOCI (2)	[2]	0	0
Gross Unrealized Gains		129,096,000	126,824,000
Gross Unrealized Losses		(25,430,000)	(12,661,000)
Fair Value		8,318,998,000	9,044,387,000
Other Than Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	2,661,925,000	3,065,665,000
OTTI Recognized in AOCI (2)	[2]	0	0
Gross Unrealized Gains		35,467,000	33,006,000
Gross Unrealized Losses		(9,355,000)	(6,513,000)
Fair Value		2,688,037,000	3,092,158,000
Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1],[3]		2,015,000
OTTI Recognized in AOCI (2)	[2],[3]		0
Gross Unrealized Gains			0
Gross Unrealized Losses			0
Fair Value	[3]		2,015,000
GSE and TVA obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	2,397,893,000	2,798,838,000
OTTI Recognized in AOCI (2)	[2]	0	0
Gross Unrealized Gains		33,175,000	27,460,000
Gross Unrealized Losses		(4,003,000)	(5,519,000)
Fair Value		2,427,065,000	2,820,779,000
State or local agency obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	264,032,000	264,812,000
OTTI Recognized in AOCI (2)	[2]	0	0
Gross Unrealized Gains		2,292,000	5,546,000
Gross Unrealized Losses		(5,352,000)	(994,000)
Fair Value		260,972,000	269,364,000
Total MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	5,553,407,000	5,864,559,000
OTTI Recognized in AOCI (2)	[2]	0	0
Gross Unrealized Gains		93,629,000	93,818,000
Gross Unrealized Losses		(16,075,000)	(6,148,000)
Fair Value		5,630,961,000	5,952,229,000
U.S. obligations single family MBS
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	165,238,000	178,882,000
OTTI Recognized in AOCI (2)	[2]	0	0
Gross Unrealized Gains		541,000	465,000
Gross Unrealized Losses		(51,000)	(74,000)
Fair Value		165,728,000	179,273,000
GSE MBS [Member] | GSE single-family MBS
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	2,512,230,000	2,654,315,000
OTTI Recognized in AOCI (2)	[2]	0	0
Gross Unrealized Gains		15,329,000	15,238,000
Gross Unrealized Losses		(6,490,000)	(3,758,000)
Fair Value		2,521,069,000	2,665,795,000
GSE MBS [Member] | GSE multifamily MBS
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	2,476,465,000	2,579,625,000
OTTI Recognized in AOCI (2)	[2]	0	0
Gross Unrealized Gains		1,402,000	5,162,000
Gross Unrealized Losses		(9,416,000)	(2,169,000)
Fair Value		2,468,451,000	2,582,618,000
Residential Mortgage Backed Securities [Member] | Private label MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	399,474,000	451,737,000
OTTI Recognized in AOCI (2)	[2]	0	0
Gross Unrealized Gains		76,357,000	72,953,000
Gross Unrealized Losses		(118,000)	(147,000)
Fair Value		$ 475,713,000	$ 524,543,000

[1] Amortized cost includes adjustments made to the cost basis of an investment for accretion of discounts and/or amortization of premiums, collection of cash, OTTI recognized, and/or fair value hedge accounting adjustments.

[2] Represents the non-credit portion of an OTTI recognized during the life of the security.

[3] Reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01, effective January 1, 2018. Refer to Note 1 in this Form 10-Q.

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Available-for-Sale (AFS) Securities (Reconciliation of Available-for-Sale Securities OTTI Loss) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Reconciliation Table of AFS AOCI [Line Items]
Non-credit portion of OTTI losses		$ 0	$ 0
Net unrealized gains on OTTI securities since their last OTTI credit charge		76,357	72,953
Net non-credit portion of OTTI gains on AFS securities in AOCI	[1]	0	0
Accumulated Other-than-Temporary Impairment [Member]
Reconciliation Table of AFS AOCI [Line Items]
Net non-credit portion of OTTI gains on AFS securities in AOCI		$ 76,357	$ 72,953

[1] Represents the non-credit portion of an OTTI recognized during the life of the security.

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Available-for-Sale (AFS) Securities (Summary of Securities with Unrealized Losses) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Fair Value:
Less than 12 Months		$ 1,722,479	$ 591,859
Greater than 12 Months		1,168,110	1,664,733
Fair Value		2,890,589	2,256,592
Unrealized Losses:
UnrealizedLossPositionLessThan12Months		(12,969)	(2,939)
UnrealizedLossPositiongreaterthan12Months		(12,461)	(9,722)
Unrealized Losses (1)	[1]	(25,430)	(12,661)
Total non-MBS
Fair Value:
Less than 12 Months		66,615	16,757
Greater than 12 Months		988,803	1,340,669
Fair Value		1,055,418	1,357,426
Unrealized Losses:
UnrealizedLossPositionLessThan12Months		(1,203)	(192)
UnrealizedLossPositiongreaterthan12Months		(8,152)	(6,321)
Unrealized Losses (1)	[1]	(9,355)	(6,513)
GSE and TVA obligations [Member]
Fair Value:
Less than 12 Months		16,945	12,386
Greater than 12 Months		914,515	1,262,810
Fair Value		931,460	1,275,196
Unrealized Losses:
UnrealizedLossPositionLessThan12Months		(338)	(114)
UnrealizedLossPositiongreaterthan12Months		(3,665)	(5,405)
Unrealized Losses (1)	[1]	(4,003)	(5,519)
State or local agency obligations [Member]
Fair Value:
Less than 12 Months		49,670	4,371
Greater than 12 Months		74,288	77,859
Fair Value		123,958	82,230
Unrealized Losses:
UnrealizedLossPositionLessThan12Months		(865)	(78)
UnrealizedLossPositiongreaterthan12Months		(4,487)	(916)
Unrealized Losses (1)	[1]	(5,352)	(994)
Total MBS [Member]
Fair Value:
Less than 12 Months		1,655,864	575,102
Greater than 12 Months		179,307	324,064
Fair Value		1,835,171	899,166
Unrealized Losses:
UnrealizedLossPositionLessThan12Months		(11,766)	(2,747)
UnrealizedLossPositiongreaterthan12Months		(4,309)	(3,401)
Unrealized Losses (1)	[1]	(16,075)	(6,148)
U.S. obligations single family MBS
Fair Value:
Less than 12 Months		0	0
Greater than 12 Months		25,572	37,330
Fair Value		25,572	37,330
Unrealized Losses:
UnrealizedLossPositionLessThan12Months		0	0
UnrealizedLossPositiongreaterthan12Months		(51)	(74)
Unrealized Losses (1)	[1]	(51)	(74)
GSE MBS [Member] | GSE single-family MBS
Fair Value:
Less than 12 Months		194,089	150,170
Greater than 12 Months		150,692	272,925
Fair Value		344,781	423,095
Unrealized Losses:
UnrealizedLossPositionLessThan12Months		(2,350)	(651)
UnrealizedLossPositiongreaterthan12Months		(4,140)	(3,107)
Unrealized Losses (1)	[1]	(6,490)	(3,758)
GSE MBS [Member] | GSE multifamily MBS
Fair Value:
Less than 12 Months		1,461,775	424,932
Greater than 12 Months		0	10,796
Fair Value		1,461,775	435,728
Unrealized Losses:
UnrealizedLossPositionLessThan12Months		(9,416)	(2,096)
UnrealizedLossPositiongreaterthan12Months		0	(73)
Unrealized Losses (1)	[1]	(9,416)	(2,169)
Private label residential MBS | Private label residential MBS
Fair Value:
Less than 12 Months		0	0
Greater than 12 Months		3,043	3,013
Fair Value		3,043	3,013
Unrealized Losses:
UnrealizedLossPositionLessThan12Months		0	0
UnrealizedLossPositiongreaterthan12Months		(118)	(147)
Unrealized Losses (1)	[1]	$ (118)	$ (147)

[1] Total unrealized losses equal the sum of “OTTI Recognized in AOCI” and “Gross Unrealized Losses” in the first two tables of this Note 3.

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Available-for-Sale (AFS) Securities (Securities Transferred) (Details)	6 Months Ended
	Jun. 30, 2018 loan
Private label MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of Available-for-sale Securities Transferred from Held-to-maturity Securities	0

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Available-for-Sale (AFS) Securities (Redemption Terms) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Amortized Cost:
Amortized Cost	[1]	$ 8,215,332	$ 8,930,224
Fair Value:
Fair Value		8,318,998	9,044,387
Total non-MBS
Amortized Cost:
Due in one year or less		984,940	1,002,015
Due after one year through five years		298,276	607,802
Due after five years through ten years		731,591	676,975
Due in more than ten years		647,118	778,873
Amortized Cost	[1]	2,661,925	3,065,665
Fair Value:
Due in one year or less		982,701	999,160
Due after one year through five years		301,970	611,231
Due after five years through ten years		746,432	687,993
Due in more than ten years		656,934	793,774
Fair Value		2,688,037	3,092,158
MBS [Member]
Amortized Cost:
Amortized Cost	[1]	5,553,407	5,864,559
Fair Value:
Fair Value		$ 5,630,961	$ 5,952,229

[1] Amortized cost includes adjustments made to the cost basis of an investment for accretion of discounts and/or amortization of premiums, collection of cash, OTTI recognized, and/or fair value hedge accounting adjustments.

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Available-for-Sale (AFS) Securities (Interest Rate Payment Terms) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Total amortized cost of AFS securities	[1]	$ 8,215,332	$ 8,930,224
Total non-MBS
Schedule of Available-for-sale Securities [Line Items]
Total amortized cost of AFS securities	[1]	2,661,925	3,065,665
MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Total amortized cost of AFS securities	[1]	5,553,407	5,864,559
Fixed Interest Rate [Member] | Total non-MBS
Schedule of Available-for-sale Securities [Line Items]
Total amortized cost of AFS securities		2,576,985	2,980,770
Fixed Interest Rate [Member] | MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Total amortized cost of AFS securities		1,090,644	1,142,290
Variable interest rate [Member] | Total non-MBS
Schedule of Available-for-sale Securities [Line Items]
Total amortized cost of AFS securities		84,940	84,895
Variable interest rate [Member] | MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Total amortized cost of AFS securities		$ 4,462,763	$ 4,722,269

[1] Amortized cost includes adjustments made to the cost basis of an investment for accretion of discounts and/or amortization of premiums, collection of cash, OTTI recognized, and/or fair value hedge accounting adjustments.

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Available-for-Sale (AFS) Securities (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Credit losses	$ 201,105	$ 205,938	$ 210,875	$ 223,353	$ 230,450	$ 236,460
MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Net purchased discounts	16,900		16,300
Available-for-sale Securities | MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Credit losses	179,200		178,800
OTTI-related accretion adjustment	$ 69,600		$ 62,100

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Held-to-Maturity (HTM) Securities (Summary of Held-to-Maturity Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 3,802,405	$ 1,883,051
Gross Unrealized Holding Gains	15,015	20,666
Gross Unrealized Holding Losses	(15,161)	(9,183)
Fair Value	3,802,259	1,894,534
Certificates of Deposit [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,700,000	175,000
Gross Unrealized Holding Gains	63	30
Gross Unrealized Holding Losses	(53)	0
Fair Value	1,700,010	175,030
State or local agency obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	117,455	122,400
Gross Unrealized Holding Gains	75	62
Gross Unrealized Holding Losses	(4,399)	(5,571)
Fair Value	113,131	116,891
Total non-MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,817,455	297,400
Gross Unrealized Holding Gains	138	92
Gross Unrealized Holding Losses	(4,452)	(5,571)
Fair Value	1,813,141	291,921
U.S. obligations single-family MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	370,376	424,341
Gross Unrealized Holding Gains	3,576	4,112
Gross Unrealized Holding Losses	0	0
Fair Value	373,952	428,453
MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,984,950	1,585,651
Gross Unrealized Holding Gains	14,877	20,574
Gross Unrealized Holding Losses	(10,709)	(3,612)
Fair Value	1,989,118	1,602,613
GSE MBS [Member] | Single Family [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	681,427	156,597
Gross Unrealized Holding Gains	4,049	2,323
Gross Unrealized Holding Losses	(203)	(39)
Fair Value	685,273	158,881
GSE MBS [Member] | Multifamily [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	694,501	726,008
Gross Unrealized Holding Gains	3,373	9,186
Gross Unrealized Holding Losses	(10,207)	(3,298)
Fair Value	687,667	731,896
Residential Mortgage Backed Securities [Member] | Private label MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	238,646	278,705
Gross Unrealized Holding Gains	3,879	4,953
Gross Unrealized Holding Losses	(299)	(275)
Fair Value	$ 242,226	$ 283,383

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Held-to-Maturity (HTM) Securities (Summary of Securities with Unrealized Losses) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value:
Less than 12 Months	$ 778,834	$ 169,089
Greater than 12 Months	212,829	232,072
Fair Value	991,663	401,161
Unrealized Losses:
Unrealized Loss Position Less than 12 Months	(5,883)	(790)
Unrealized Loss Position 12 Months or Longer	(9,278)	(8,393)
Total Unrealized Loss Position	(15,161)	(9,183)
Multifamily [Member] | GSE MBS [Member]
Fair Value:
Less than 12 Months	250,746	169,089
Greater than 12 Months	92,016	94,241
Fair Value	342,762	263,330
Unrealized Losses:
Unrealized Loss Position Less than 12 Months	(5,646)	(790)
Unrealized Loss Position 12 Months or Longer	(4,561)	(2,508)
Total Unrealized Loss Position	(10,207)	(3,298)
Certificates of Deposit [Member]
Fair Value:
Less than 12 Months	449,947
Greater than 12 Months	0
Fair Value	449,947
Unrealized Losses:
Unrealized Loss Position Less than 12 Months	(53)
Unrealized Loss Position 12 Months or Longer	0
Total Unrealized Loss Position	(53)
State or local agency obligations [Member]
Fair Value:
Less than 12 Months	0	0
Greater than 12 Months	102,371	105,119
Fair Value	102,371	105,119
Unrealized Losses:
Unrealized Loss Position Less than 12 Months	0	0
Unrealized Loss Position 12 Months or Longer	(4,399)	(5,571)
Total Unrealized Loss Position	(4,399)	(5,571)
Total non-MBS
Fair Value:
Less than 12 Months	449,947
Greater than 12 Months	102,371
Fair Value	552,318
Unrealized Losses:
Unrealized Loss Position Less than 12 Months	(53)
Unrealized Loss Position 12 Months or Longer	(4,399)
Total Unrealized Loss Position	(4,452)
GSE MBS [Member] | Single Family [Member]
Fair Value:
Less than 12 Months	74,524	0
Greater than 12 Months	4,988	5,633
Fair Value	79,512	5,633
Unrealized Losses:
Unrealized Loss Position Less than 12 Months	(166)	0
Unrealized Loss Position 12 Months or Longer	(37)	(39)
Total Unrealized Loss Position	(203)	(39)
Private label MBS [Member] | Residential Mortgage Backed Securities [Member]
Fair Value:
Less than 12 Months	3,617	0
Greater than 12 Months	13,454	27,079
Fair Value	17,071	27,079
Unrealized Losses:
Unrealized Loss Position Less than 12 Months	(18)	0
Unrealized Loss Position 12 Months or Longer	(281)	(275)
Total Unrealized Loss Position	(299)	(275)
MBS [Member]
Fair Value:
Less than 12 Months	328,887	169,089
Greater than 12 Months	110,458	126,953
Fair Value	439,345	296,042
Unrealized Losses:
Unrealized Loss Position Less than 12 Months	(5,830)	(790)
Unrealized Loss Position 12 Months or Longer	(4,879)	(2,822)
Total Unrealized Loss Position	$ (10,709)	$ (3,612)

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Held-to-Maturity (HTM) Securities (Redemption Terms) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Amortized Cost:
Amortized Cost	$ 3,802,405	$ 1,883,051
Fair Value:
Fair Value	3,802,259	1,894,534
Total non-MBS
Amortized Cost:
Due in one year or less	1,700,000	175,000
Due after one year through five years	10,685	0
Due after five years through ten years	28,305	42,010
Due after ten years	78,465	80,390
Amortized Cost	1,817,455	297,400
Fair Value:
Due in one year or less	1,700,010	175,030
Due after one year through five years	10,760	0
Due after five years through ten years	27,677	41,211
Due after ten years	74,694	75,680
Fair Value	1,813,141	291,921
MBS [Member]
Amortized Cost:
Amortized Cost	1,984,950	1,585,651
Fair Value:
Fair Value	$ 1,989,118	$ 1,602,613

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Held-to-Maturity (HTM) Securities (Interest Rate Payment Terms) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 3,802,405	$ 1,883,051
Total non-MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,817,455	297,400
MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,984,950	1,585,651
Fixed Interest Rate [Member] | Total non-MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,700,000	175,000
Fixed Interest Rate [Member] | MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,291,410	787,395
Variable interest rate [Member] | Total non-MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	117,455	122,400
Variable interest rate [Member] | MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 693,540	$ 798,256

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Other-Than-Temporary Impairment (OTTI Securities) (Details) - Private label MBS [Member] $ in Thousands	Jun. 30, 2018 USD ($)
Other than Temporary Impairment, Disclosure [Line Items]
AFS Securities-Unpaid Principal Balance	$ 526,186
AFS Securities-Amortized Cost	399,474	[1]
AFS Securities-Fair Value	475,713
Available-for-sale Securities
Other than Temporary Impairment, Disclosure [Line Items]
OTTI Securities-Unpaid Principal Balance	523,026
OTTI Securities-Amortized Cost	396,314	[1]
OTTI Securities-Fair Value	472,670
Available-for-sale Securities | Residential Mortgage Backed Securities [Member]
Other than Temporary Impairment, Disclosure [Line Items]
Private label MBS with no OTTI-Unpaid Principal Balance	3,160
Private label MBS with no OTTI - Amortized Cost	3,160	[1]
Private label MBS with no OTTI-Fair Value	3,043
Available-for-sale Securities | Residential Mortgage Backed Securities [Member] | Prime [Member]
Other than Temporary Impairment, Disclosure [Line Items]
OTTI Securities-Unpaid Principal Balance	219,705
OTTI Securities-Amortized Cost	164,814	[1]
OTTI Securities-Fair Value	201,843
Available-for-sale Securities | Residential Mortgage Backed Securities [Member] | Alt-A [Member]
Other than Temporary Impairment, Disclosure [Line Items]
OTTI Securities-Unpaid Principal Balance	303,321
OTTI Securities-Amortized Cost	231,500	[1]
OTTI Securities-Fair Value	$ 270,827

[1] Amortized cost includes adjustments made to the cost basis of an investment for accretion of discounts and/or amortization of premiums, collection of cash, and/or OTTI recognized.

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Other-Than-Temporary Impairment (Rollforward) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Beginning balance		$ 205,938	$ 230,450	$ 210,875	$ 236,460
Additional OTTI credit losses for which an OTTI charge was previously recognized(1)	[1]	80	0	342	664
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold and Matured		0	(191)	0	(191)
Increases in cash flows expected to be collected (accreted as interest income over the remaining lives of the applicable securities)		(4,913)	(6,906)	(10,112)	(13,580)
Ending balance		$ 201,105	$ 223,353	$ 201,105	$ 223,353

[1] For the three months ended June 30, 2018 and 2017, additional OTTI credit losses for which an OTTI charge was previously recognized relate to all securities that were previously impaired prior to April 1 of the applicable year. For the six months ended June 30, 2018 and 2017, additional OTTI credit losses for which an OTTI charge was previously recognized relate to all securities that were previously impaired prior to January 1 of the applicable year.

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Other-Than-Temporary Impairment (Narrative) (Details)	Jun. 30, 2018
Other than Temporary Impairment, Disclosure [Line Items]
Projected Change In The Twelve Month Housing Price Percentage Rate, Maximum Decrease	(8.00%)
Projected Change In The Twelve Month Housing Price Percentage Rate, Maximum Increase	13.00%
Projected Change In The Short-term Housing Price Percentage Rate, Maximum Decrease In Vast Majority Of Markets	2.00%
Projected Change In The Short-term Housing Price Percentage Rate, Maximum Increase In Vast Majority Of Markets	7.00%

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Advances (Narrative) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($) Institutions	Dec. 31, 2017 USD ($) Institutions
Federal Home Loan Bank Advances
Total Par Value | $	$ 76,609,887	$ 74,383,867
AHP subsidized loans, interest rate	5.50%
Federal Home Loan Bank, Advances, Five Largest Borrowers Amount Outstanding | $	$ 57,800,000	$ 57,500,000
Number Of Top Advances Borrowers | Institutions	5	5
Federal Home Loan Bank, Advances, Five Largest Borrowers, Percent of Total	75.50%	77.30%
Federal Home Loan Bank, Advances, Borrowers With Outstanding Loan Balances Greater Than Ten Percent | Institutions	3	3
Minimum
Federal Home Loan Bank Advances
Federal Home Loan Bank, Advances, Maturity Period, Fixed Rate	1 day
Federal Home Loan Bank, Advances, Maturity Period, Variable Rate	30 days
Interest rate of advances	0.83%
Maximum
Federal Home Loan Bank Advances
Federal Home Loan Bank, Advances, Maturity Period, Fixed Rate	30 years
Federal Home Loan Bank, Advances, Maturity Period, Variable Rate	10 years
Interest rate of advances	7.40%

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Advances (Portfolio by Year of Contractual Maturity) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Rolling Year [Abstract]
Due in 1 year or less	2.14%	1.56%
Due after 1 year through 2 years	2.20%	1.63%
Due after 2 years through 3 years	2.38%	1.71%
Due after 3 years through 4 years	2.43%	1.85%
Due after 4 years through 5 years	2.57%	2.14%
Thereafter	2.76%	2.72%
Total par value, Weighted Average Interest Rate	2.26%	1.67%
Federal Home Loan Bank, Advances, Maturity, Rolling Year, Par Value [Abstract]
Due in 1 year or less	$ 33,000,442	$ 31,606,861
Due after 1 year through 2 years	13,876,672	11,786,189
Due after 2 years through 3 years	20,335,058	18,456,775
Due after 3 years through 4 years	6,470,173	10,445,920
Due after 4 years through 5 years	2,146,531	1,254,184
Thereafter	781,011	833,938
Total Par Value	76,609,887	74,383,867
Discount on AHP advances	0	(1)
Deferred prepayment fees	(400)	(613)
Hedging adjustments	(269,476)	(103,455)
Total book value	$ 76,340,011	$ 74,279,798

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Advances (Advances by Year of Contractual Maturity or Next Call Date or Next Convertible Date) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Advances [Abstract]
Due in 1 year or less	$ 38,050,442	$ 35,856,861
Due after 1 year through 2 years	13,061,672	11,771,189
Due after 2 years through 3 years	17,110,058	17,231,775
Due after 3 years through 4 years	5,460,173	7,445,920
Due after 4 years through 5 years	2,146,531	1,244,184
Thereafter	781,011	833,938
Due in 1 year or less	33,025,942	31,632,361
Due after 1 year through 2 years	13,871,172	11,780,689
Due after 2 years through 3 years	20,335,058	18,456,775
Due after 3 years through 4 years	6,470,173	10,445,920
Due after 4 years through 5 years	2,140,531	1,254,184
Thereafter	767,011	813,938
Total Par Value	$ 76,609,887	$ 74,383,867

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Advances (Interest Rate Payment Terms) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances, Fixed Rate [Abstract]
Fixed rate – overnight	$ 5,437,295	$ 3,988,232
Due in 1 year or less	17,731,754	15,998,268
Thereafter	18,302,045	14,685,606
Total Fixed Rate	41,471,094	34,672,106
Federal Home Loan Bank, Advances, Floating Rate [Abstract]
Due in 1 year or less	9,831,393	11,620,361
Thereafter	25,307,400	28,091,400
Total Variable Rate	35,138,793	39,711,761
Total Par Value	$ 76,609,887	$ 74,383,867

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Mortgage Loans Held for Portfolio (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Mortgage Loans on Real Estate [Line Items]
Par value of mortgage loans held for portfolio		$ 4,091,820	$ 3,838,576
Premiums		70,861	70,197
Discounts		(3,749)	(3,418)
Hedging adjustments		20,598	23,722
Total mortgage loans held for portfolio		4,179,530	3,929,077
Single Family [Member] | Fixed-rate long-term single-family mortgages (1)
Mortgage Loans on Real Estate [Line Items]
Par value of mortgage loans held for portfolio	[1]	3,868,035	3,592,083
Single Family [Member] | Fixed-rate medium-term single-family mortgages (1)
Mortgage Loans on Real Estate [Line Items]
Par value of mortgage loans held for portfolio	[1]	$ 223,785	$ 246,493

[1] Long-term is defined as greater than 15 years. Medium-term is defined as a term of 15 years or less.

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Mortgage Loans Held for Portfolio (Collateral or Guarantee Type) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Mortgage Loans on Real Estate [Line Items]
Par value of mortgage loans held for portfolio	$ 4,091,820	$ 3,838,576
Conventional Mortgage Loan [Member]
Mortgage Loans on Real Estate [Line Items]
Par value of mortgage loans held for portfolio	3,893,779	3,631,292
Government-guaranteed/insured loans
Mortgage Loans on Real Estate [Line Items]
Par value of mortgage loans held for portfolio	$ 198,041	$ 207,284

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Allowance for Credit Losses (Allowance for Credit Losses) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance				$ 5,954
Provision for Loan Losses Expensed		$ (423)	$ 90	(2,795)	$ 92
Ending Balance		8,054		8,054
Total recorded investment	[1]	4,200,835		4,200,835		$ 3,949,290
Conventional MPF Loan [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance		8,241	6,204	5,954	6,231
(Charge-offs) Recoveries, net	[2]	(415)	209	(406)	(10)
Provision for Loan Losses Expensed		228	(72)	2,506	120
Ending Balance		8,054	$ 6,341	8,054	$ 6,341
Ending balance, individually evaluated for impairment		6,867		6,867		5,218
Ending balance, collectively evaluated for impairment		1,187		1,187		736
Individually evaluated for impairment, with or without a related allowance		49,437		49,437		52,505
Collectively evaluated for impairment		3,946,534		3,946,534		3,682,167
Total recorded investment	[1]	$ 3,995,971		$ 3,995,971		$ 3,734,672

[1] The recorded investment in a loan is the unpaid principal balance, adjusted for charge-offs of estimated losses, accrued interest, net deferred loan fees or costs, unamortized premiums, unaccreted discounts and adjustments for hedging. The recorded investment is not net of any valuation allowance.

[2] Net charge-offs that the Bank does not expect to recover through CE receivable.

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Allowance for Credit Losses (Credit Quality Indicators) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1]	$ 67,711	$ 83,690
Total current loans	[1]	4,133,124	3,865,600
Total recorded investment	[1]	4,200,835	3,949,290
Mortgage Loans in Process of Foreclosure, Amount	[2]	$ 7,595	$ 11,033
Serious delinquency rate (3)	[3]	0.40%	0.60%
Past due 90 days or more still accruing interest		$ 3,831	$ 4,959
Loans on nonaccrual status (4)		15,530	20,695
Conventional MPF Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1]	53,331	64,454
Total current loans	[1]	3,942,640	3,670,218
Total recorded investment	[1]	3,995,971	3,734,672
Mortgage Loans in Process of Foreclosure, Amount	[2]	$ 6,452	$ 9,978
Serious delinquency rate (3)	[3]	0.30%	0.50%
Past due 90 days or more still accruing interest		$ 0	$ 0
Loans on nonaccrual status (4)		15,530	20,695
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1]	42,727	51,067
Financing Receivables, 30 to 59 Days Past Due [Member] | Conventional MPF Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1]	33,816	39,677
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1]	8,573	9,926
Financing Receivables, 60 to 89 Days Past Due [Member] | Conventional MPF Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1]	6,935	7,039
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1]	16,411	22,697
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Conventional MPF Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1]	12,580	17,738
Government-guaranteed/insured loans
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1],[4]	14,380	19,236
Total current loans	[1],[4]	190,484	195,382
Total recorded investment	[1],[4]	204,864	214,618
Mortgage Loans in Process of Foreclosure, Amount	[2],[4]	$ 1,143	$ 1,055
Serious delinquency rate (3)	[3],[4]	1.90%	2.30%
Past due 90 days or more still accruing interest	[4]	$ 3,831	$ 4,959
Loans on nonaccrual status (4)	[4]	0	0
Government-guaranteed/insured loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1],[4]	8,911	11,390
Government-guaranteed/insured loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1],[4]	1,638	2,887
Government-guaranteed/insured loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total past due loans	[1],[4]	$ 3,831	$ 4,959

[1] The recorded investment in a loan is the unpaid principal balance, adjusted for charge-offs of estimated losses, accrued interest, net deferred loan fees or costs, unamortized premiums, unaccreted discounts and adjustments for hedging. The recorded investment is not net of any valuation allowance.

[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 dependent on their delinquency status.

[3] Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total loan portfolio class.

[4] The Bank has not recorded any allowance for credit losses on government-guaranteed or -insured mortgage loans at June 30, 2018, and December 31, 2017.

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Allowance for Credit Losses (Individually Evaluated Impaired Loans) (Details) - Conventional MPF Loan [Member] - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Recorded Investment
With no related allowance	$ 30,001	$ 30,824
With a related allowance	19,436	21,681
Total recorded investment	49,437	52,505
Unpaid Principal Balance
With no related allowance	29,657	30,497
With a related allowance	19,158	21,360
Total Unpaid Principal Balance	48,815	51,857
Related Allowance for Credit Losses	$ 6,867	$ 5,218

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Allowance for Credit Losses (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Maximum Exposure Under First Loss Account	$ 27.7		$ 27.7		$ 26.3
Credit Enhancement Fees	1.1	$ 0.9	2.2	$ 1.8
REO	3.3		3.3		3.9
TDR	$ 10.6		$ 10.6		$ 11.1

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Derivatives and Hedging Activities (Derivatives in Statement of Condition) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Total derivatives before netting and collateral adjustments: Notional Amount of Derivatives		$ 52,936,341	$ 44,783,919	[1]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		18,325	9,380	[1]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		104,913	62,786	[1]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[2],[3]	97,208	71,376	[1],[4]
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	[2],[3]	(89,886)	(43,265)	[1]
Derivative assets		115,533	80,756	[1],[4]
Derivative liabilities		15,027	19,521	[1]
Cash Collateral posted		188,000	114,600
Variation Margin for Daily Settled Contracts			11,200
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Total derivatives before netting and collateral adjustments: Notional Amount of Derivatives		35,917,784	30,017,995	[1]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		2,323	4,185	[1]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		72,707	45,302	[1]
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total derivatives before netting and collateral adjustments: Notional Amount of Derivatives		17,018,557	14,765,924	[1]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		16,002	5,195	[1]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		32,206	17,484	[1]
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Total derivatives before netting and collateral adjustments: Notional Amount of Derivatives		10,497,743	8,285,437	[1]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		12,906	3,727	[1]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		32,184	17,423	[1]
Not Designated as Hedging Instrument [Member] | Interest Rate Caps or Floors [Member]
Derivatives, Fair Value [Line Items]
Total derivatives before netting and collateral adjustments: Notional Amount of Derivatives		6,485,000	6,455,000	[1]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		3,057	1,464	[1]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0	[1]
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Mortgages [Member]
Derivatives, Fair Value [Line Items]
Total derivatives before netting and collateral adjustments: Notional Amount of Derivatives		35,814	25,487	[1]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		39	4	[1]
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		$ 22	$ 61	[1]

[1] To conform with current presentation, $11.2 million of variation margin received from the Clearing House has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

[2] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions, cash collateral and related accrued interest held or placed with the same clearing agent and/or counterparties. Cash collateral posted and related accrued interest was $188.0 million and $114.6 million at June 30, 2018 and December 31, 2017, respectively. Cash collateral received was immaterial for both June 30, 2018 and December 31, 2017.

[3] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions and also cash collateral held and related interest accrued or placed by the Bank with the same clearing agent and/or counterparties.

[4] To conform with current presentation, $11.2 million of variation margin received from the Clearing House for daily settled contracts has been allocated to the individual instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

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Derivatives and Hedging Activities (Derivatives in Statement of Income) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Net Fair Value Hedge Ineffectiveness		$ (1,780)	$ (455)	$ (579)	$ 203
Net gains (losses) related to derivatives not designated as hedging instruments		6,619	(4,048)	9,926	(331)
Derivative Instruments, Other Gain (Loss)		(780)	208	(1,176)	263
Net gains (losses) on derivatives and hedging activities		4,059	(4,295)	8,171	135
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Fair Value Hedge Ineffectiveness	[1]	(1,780)	(455)	(579)	203
Intermediary Transactions Other Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) related to derivatives not designated as hedging instruments		4	4	12	10
Mortgages [Member] | Forward Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) related to derivatives not designated as hedging instruments		(444)	(390)	(1,336)	(427)
Not Designated as Hedging Instrument, Economic Hedge [Member] | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) related to derivatives not designated as hedging instruments		10,339	(848)	16,136	4,340
Not Designated as Hedging Instrument, Economic Hedge [Member] | Interest Rate Caps or Floors [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) related to derivatives not designated as hedging instruments		296	(2,069)	1,273	(2,645)
Not Designated as Hedging Instrument, Economic Hedge [Member] | Net Interest Settlements [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) related to derivatives not designated as hedging instruments		$ (3,576)	$ (745)	$ (6,159)	$ (1,609)

[1] Pertains to total net gains (losses) for fair value hedge ineffectiveness.

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Derivatives and Hedging Activities (Derivatives in Statement of Income and Impact on Interest) (Details) - USD ($) $ in Thousands		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 Derivative		$ 49,180	$ (11,147)	$ 123,853	$ (110)
Gains/(Losses) on Hedged Item		(50,960)	10,692	(124,432)	313
Net Fair Value Hedge Ineffectiveness		(1,780)	(455)	(579)	203
Effect of Derivatives on Net Interest Income (1)	[1]	(13,784)	(9,879)	(27,060)	(18,409)
amortization and accretion of hedged items		(1,100)	(900)	(1,700)	(1,600)
Advances [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) on Derivative		42,622	(20,918)	166,415	(5,005)
Gains/(Losses) on Hedged Item		(42,410)	20,815	(165,953)	4,898
Net Fair Value Hedge Ineffectiveness		212	(103)	462	(107)
Effect of Derivatives on Net Interest Income (1)	[1]	10,648	(7,989)	7,839	(17,963)
Federal Home Loan Bank, Consolidated Obligations, Bonds [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) on Derivative		(6,685)	23,457	(96,457)	12,306
Gains/(Losses) on Hedged Item		3,961	(23,001)	92,864	(11,325)
Net Fair Value Hedge Ineffectiveness		(2,724)	456	(3,593)	981
Effect of Derivatives on Net Interest Income (1)	[1]	(23,524)	2,478	(31,307)	8,827
Available-for-sale Securities
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) on Derivative		13,243	(13,686)	53,895	(7,411)
Gains/(Losses) on Hedged Item		(12,511)	12,878	(51,343)	6,740
Net Fair Value Hedge Ineffectiveness		732	(808)	2,552	(671)
Effect of Derivatives on Net Interest Income (1)	[1]	$ (908)	$ (4,368)	$ (3,592)	$ (9,273)

[1] Represents the net interest settlements on derivatives in fair value hedge relationships presented in the interest income/expense line item of the respective hedged item. These amounts do not include $(1.1) million and $(0.9) million for the second quarter of 2018 and 2017, respectively, and $(1.7) million and $(1.6) million for the six months ended June 30, 2018 and 2017, respectively, of amortization/accretion of the basis adjustment related to discontinued fair value hedging relationships.

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Derivatives and Hedging Activities (Narrative) (Details) $ in Millions	Jun. 30, 2018 USD ($)
Derivative [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	$ 11.0
Collateral Already Posted, Aggregate Fair Value	2.7
Additional Collateral, Aggregate Fair Value	$ 6.7

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Derivatives and Hedging Activities (Offsetting Assets) (Details) - USD ($)		Jun. 30, 2018	Dec. 31, 2017	[1]
Offsetting Assets [Line Items]
Derivative Asset, Fair Value, Gross Asset		$ 18,286,000	$ 9,376,000
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	[2],[3]	97,208,000	71,376,000	[4]
Derivative Asset, Net Fair Value Amount, After Offsetting Adjustment		115,494,000	80,752,000
Derivative Asset, Not Subject to Master Netting Arrangement	[5]	39,000	4,000
Derivative assets		115,533,000	80,756,000	[4]
Derivative Asset, Fair Value, Amount Offset Against Collateral		115,533,000	80,756,000
Over the Counter [Member]
Offsetting Assets [Line Items]
Derivative Asset, Fair Value, Gross Asset		17,489,000	5,875,000
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset		(14,575,000)	(5,246,000)
Derivative Asset, Net Fair Value Amount, After Offsetting Adjustment		2,914,000	629,000
Derivative Asset, Not Subject to Master Netting Arrangement	[5]	39,000	4,000
Derivative assets		2,953,000	633,000
Derivative Asset, Fair Value, Amount Offset Against Collateral		2,953,000	633,000
Exchange Cleared [Member]
Offsetting Assets [Line Items]
Derivative Asset, Fair Value, Gross Asset		797,000	3,501,000
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset		111,783,000	76,622,000
Derivative Asset, Net Fair Value Amount, After Offsetting Adjustment		112,580,000	80,123,000
Derivative Asset, Not Subject to Master Netting Arrangement	[5]	0	0
Derivative assets		112,580,000	80,123,000
Derivative Asset, Fair Value, Amount Offset Against Collateral		$ 112,580,000	$ 80,123,000

[1] To conform with current presentation, $11.2 million of variation margin received from the Clearing House for daily settled contracts has been allocated to the individual instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

[2] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions, cash collateral and related accrued interest held or placed with the same clearing agent and/or counterparties. Cash collateral posted and related accrued interest was $188.0 million and $114.6 million at June 30, 2018 and December 31, 2017, respectively. Cash collateral received was immaterial for both June 30, 2018 and December 31, 2017.

[3] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions and also cash collateral held and related interest accrued or placed by the Bank with the same clearing agent and/or counterparties.

[4] To conform with current presentation, $11.2 million of variation margin received from the Clearing House has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

[5] Represents derivatives that are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments

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Derivatives and Hedging Activities (Offsetting Liabilities) (Details) - USD ($) $ in Thousands		Jun. 30, 2018		Dec. 31, 2017
Offsetting Liabilities [Line Items]
Derivative Liability, Fair Value, Gross Liability		$ 104,891		$ 62,724	[1]
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	[2],[3]	(89,886)		(43,265)	[1]
Derivative Laibility, Net Fair Value Amount, After Offsetting Adjustment		15,005		19,459	[1]
Derivative Liability, Not Subject to Master Netting Arrangement		22	[4]	62	[5]
Derivative liabilities		15,027		19,521	[1]
Derivative Liability, Fair Value, Amount Offset Against Collateral		15,027		19,521	[1]
Over the Counter [Member]
Offsetting Liabilities [Line Items]
Derivative Liability, Fair Value, Gross Liability		99,472		47,315	[1]
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset		(89,089)		(39,063)	[1]
Derivative Laibility, Net Fair Value Amount, After Offsetting Adjustment		10,383		8,252	[1]
Derivative Liability, Not Subject to Master Netting Arrangement		22	[4]	62
Derivative liabilities		10,405		8,314	[1]
Derivative Liability, Fair Value, Amount Offset Against Collateral		10,405		8,314	[1]
Exchange Cleared [Member]
Offsetting Liabilities [Line Items]
Derivative Liability, Fair Value, Gross Liability		5,419		15,409	[1]
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset		(797)		(4,202)	[1]
Derivative Laibility, Net Fair Value Amount, After Offsetting Adjustment		4,622		11,207	[1]
Derivative Liability, Not Subject to Master Netting Arrangement		0	[4]	0	[5]
Derivative liabilities		4,622		11,207	[1]
Derivative Liability, Fair Value, Amount Offset Against Collateral		$ 4,622		$ 11,207	[1]

[1] To conform with current presentation, $11.2 million of variation margin received from the Clearing House has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

[2] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions, cash collateral and related accrued interest held or placed with the same clearing agent and/or counterparties. Cash collateral posted and related accrued interest was $188.0 million and $114.6 million at June 30, 2018 and December 31, 2017, respectively. Cash collateral received was immaterial for both June 30, 2018 and December 31, 2017.

[3] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions and also cash collateral held and related interest accrued or placed by the Bank with the same clearing agent and/or counterparties.

[4] Represents derivatives that are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments

[5] Represents the non-credit portion of an OTTI recognized during the life of the security.

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Consolidated Obligations (Interest Rate Payment Terms) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Short-term and Long-term Debt [Line Items]
Par amounts for the FHLBanks' outstanding Consolidated Obligation	$ 1,059,900,000	$ 1,034,300,000
Fixed-rate	27,184,715	26,714,743
Step-up	1,850,000	1,675,000
Floating-rate	39,432,850	28,837,500
Conversion bonds - fixed to floating	390,000	390,000
Total par value	68,857,565	57,617,243
Bond premiums	67,714	65,198
Bond discounts	(9,144)	(7,927)
Concession fees	(6,971)	(6,417)
Hedging adjustments	(227,297)	(134,375)
Total book value	$ 68,681,867	$ 57,533,722

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Consolidated Obligations (Contractual Maturity Terms) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Short-term and Long-term Debt [Line Items]
Due in 1 year or less	$ 42,085,735	$ 28,357,115
Due in 1 year or less, Weighted Average Interest Rate	1.87%	1.33%
Due after 1 year through 2 years	$ 14,755,600	$ 17,184,710
Due after 1 year through 2 years, Weighted Average Interest Rate	1.89%	1.44%
Due after 2 years through 3 years	$ 3,647,270	$ 4,062,040
Due after 2 years through 3 years, Weighted Average Interest Rate	1.98%	1.78%
Due after 3 years through 4 years	$ 2,400,795	$ 2,357,115
Due after 3 years through 4 years, Weighted Average Interest	2.27%	2.11%
Due after 4 years through 5 years	$ 1,820,315	$ 1,701,520
Due after 4 years through 5 years, Weighted Average Interest Rate	2.43%	2.12%
Thereafter	$ 4,147,850	$ 3,937,150
Thereafter, Weighted Average Interest Rate	2.59%	2.41%
Index amortizing notes	$ 0	$ 17,593
Index amortizing notes, Weighted Average Interest Rate	0.00%	5.39%
Total par value	$ 68,857,565	$ 57,617,243
Total par, Weighted Average Interest Rate	1.95%	1.53%

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Consolidated Obligations (Consolidated Obligation Bonds Noncallable and Callable) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Short-term and Long-term Debt [Line Items]
Par value	$ 68,857,565	$ 57,617,243
Noncallable
Schedule of Short-term and Long-term Debt [Line Items]
Par value	62,535,565	52,328,243
Callable
Schedule of Short-term and Long-term Debt [Line Items]
Par value	$ 6,322,000	$ 5,289,000

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Consolidated Obligations (Consolidated Obligation Bonds by Earlier of Contractual Maturity or Next Call Date) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Short-term and Long-term Debt [Line Items]
Due in 1 year or less	$ 48,222,735	$ 33,384,115
Due after 1 year through 2 years	14,040,600	17,061,710
Due after 2 years through 3 years	2,915,270	3,587,040
Due after 3 years through 4 years	1,692,795	1,477,115
Due after 4 years through 5 years	1,112,315	1,236,520
Thereafter	873,850	853,150
Index amortizing notes	0	17,593
Total par value	$ 68,857,565	$ 57,617,243

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Consolidated Obligations (Consolidated Obligation Discount Notes) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Discount Notes, Book value		$ 26,988,892	$ 36,193,289
Discount Notes, Par value		$ 27,060,905	$ 36,253,187
Discount Notes, Weighted Average Interest Rate	[1]	1.89%	1.24%

[1] Represents an implied rate.

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Capital (Capital Requirements) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Capital [Abstract]
Number of Finance Agency Regualtory Capital Requirements	3
Number Of Subclasses Of Capital Stock	2
Federal Home Loan Bank, Risk-Based Capital, Required	$ 1,350,377	$ 1,052,052
Federal Home Loan Bank, Risk-Based Capital, Actual	$ 5,170,681	$ 4,821,638
Regulatory Capital Ratio, Required	4.00%	4.00%
Federal Home Loan Bank, Regulatory Capital Ratio, Actual	5.10%	4.80%
Federal Home Loan Bank, Regulatory Capital, Required	$ 4,072,573	$ 3,986,520
Federal Home Loan Bank, Regulatory Capital, Actual	$ 5,170,681	$ 4,821,638
Leverage ratio - Required	5.00%	5.00%
Federal Home Loan Bank, Leverage Ratio, Actual	7.60%	7.30%
Federal Home Loan Bank, Leverage Capital, Required	$ 5,090,716	$ 4,983,150
Federal Home Loan Bank, Leverage Capital, Actual	$ 7,756,021	$ 7,232,457

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Capital (Capital Concentrations) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Capital [Line Items]
Capital stock		$ 3,950,450	$ 3,658,656
Capital Stock Ownership By Member
Capital [Line Items]
Concentration Risk Benchmark, Percent		10.00%
Capital Stock Ownership By Member | PNC Bank N.A. [Member]
Capital [Line Items]
Capital Stock Members	[1]	$ 1,108,150	$ 910,400
Concentration Risk Benchmark, Percent	[1]	28.00%	24.80%
Capital Stock Ownership By Member | Ally Bank [Member]
Capital [Line Items]
Capital Stock Members	[1]	$ 789,532	$ 745,387
Concentration Risk Benchmark, Percent	[1]	20.00%	20.30%
Capital Stock Ownership By Member | Chase Bank USA, N.A. [Member] [Domain]
Capital [Line Items]
Capital Stock Members		$ 505,029	$ 589,254
Concentration Risk Benchmark, Percent		12.80%	16.10%
Subclass B1 [Member]
Capital [Line Items]
Common Stock, Value, Outstanding		$ 400,000	$ 400,000
Subclass B2 [Member]
Capital [Line Items]
Common Stock, Value, Outstanding		$ 3,600,000	$ 3,300,000

[1] For Bank membership purposes, the principal place of business for PNC Bank is Pittsburgh, PA. For Ally Bank, the principal place of business is Horsham, PA.

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Capital (Mandatorily Redeemable Capital Stock) (Details)	6 Months Ended
	Jun. 30, 2018 USD ($) Institutions $ / shares	Jun. 30, 2017 USD ($)	Dec. 31, 2017 $ / shares
Capital [Abstract]
Balance, beginning of the period	$ 5,113,000	$ 5,216,000
Capital stock subject to mandatory redemption reclassified from capital	17,000	269,000
Redemption/repurchase of mandatorily redeemable stock	(600,000)	(466,000)
Balance, end of the period	$ 4,530,000	$ 5,019,000
Capital stock, Par value Per Share | $ / shares	$ 100		$ 100
Financial Instruments Subject to Mandatory Redemption, Number of Institutions | Institutions	5
Financial Instruments Subject to Mandatory Redemption, Due to Institution Mergers | Institutions	4
Financial Instruments Subject to Mandatory Redemption, Redemption, Withdrawals	1

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Capital (Mandatorily Redeemable Capital Stock by Contractual Year of Redemption) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Capital [Abstract]
Due in 1 year or less	$ 326	$ 0
Due after 1 year through 2 years	0	342
Due after 2 years through 3 years	3,982	4,256
Due after 3 years through 4 years	0	0
Due after 4 years through 5 years	222	515
Total	$ 4,530	$ 5,113	$ 5,019	$ 5,216
Redemption Period	5 years

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Capital (Dividends and Retained Earnings) (Details) - USD ($) $ in Thousands						6 Months Ended
	Jul. 27, 2018	Apr. 27, 2018	Feb. 22, 2018	Apr. 28, 2017	Feb. 28, 2017	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Capital [Line Items]
Capital stock						$ 3,950,450	$ 3,658,656
Joint Capital Enhancement Agreement Percentage						20.00%
Percent of Average Balance of Outstanding Consolidated Obligations Required per the Joint Capital Enhancement Agreement For Each Previous Quarter						1.00%
Retained Earnings (Accumulated Deficit)						$ 1,215,700	1,157,868
Unrestricted						899,131	875,395
Restricted						316,569	282,473
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount						4,530	5,113	$ 5,019	$ 5,216
Subclass B1 [Member]
Capital [Line Items]
Common Stock, Value, Outstanding						400,000	400,000
Dividends Cash, Annualized Rate		3.50%	3.50%	2.00%	2.00%
Subclass B1 [Member] | Subsequent Event [Member]
Capital [Line Items]
Dividends Cash, Annualized Rate	3.50%
Subclass B2 [Member]
Capital [Line Items]
Common Stock, Value, Outstanding						$ 3,600,000	$ 3,300,000
Dividends Cash, Annualized Rate		6.75%	6.75%	5.00%	5.00%
Subclass B2 [Member] | Subsequent Event [Member]
Capital [Line Items]
Dividends Cash, Annualized Rate	6.75%

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Capital (Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)	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
Accumulated Other Comprehensive Income (Loss) [Line Items]
AOCI balance	$ 5,266,901,000	$ 4,932,208,000	$ 5,266,901,000	$ 4,932,208,000		$ 4,927,488,000		$ 4,793,915,000
Net unrealized gains (losses)	714,000	31,654,000	(13,901,000)	63,029,000
Amortization on hedging activities	(4,000)	(4,000)	(12,000)	(11,000)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	176,000	86,000	296,000	172,000
Net Unrealized Gains(Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
AOCI balance	27,309,000	50,194,000	27,309,000	50,194,000	$ 26,595,000	41,210,000	$ 18,540,000	(12,835,000)
Noncredit OTTI Gains(Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gains (losses)	3,149,000	8,766,000	3,062,000	7,680,000
Net Unrealized Gains on Hedging Activities[Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
AOCI balance	188,000	212,000	188,000	212,000	192,000	200,000	216,000	223,000
Amortization on hedging activities	(4,000)	(4,000)	(12,000)	(11,000)
Pension and Post Retirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
AOCI balance	(3,103,000)	(2,344,000)	(3,103,000)	(2,344,000)	(3,279,000)	(3,399,000)	(2,430,000)	(2,516,000)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	176,000	86,000	296,000	172,000
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
AOCI balance	100,751,000	122,192,000	100,751,000	122,192,000	96,636,000	110,964,000	82,127,000	52,296,000
Net unrealized gains (losses)	3,863,000	40,420,000	(10,839,000)	70,709,000
Net change in fair value of OTTI securities		(437,000)		(1,638,000)
Total Noncredit OTTI to credit OTTI	80,000		342,000	664,000
Amortization on hedging activities	(4,000)	(4,000)	(12,000)	(11,000)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	176,000	86,000	296,000	172,000
Available-for-sale Securities | Noncredit OTTI Gains(Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
AOCI balance	76,357,000	74,130,000	76,357,000	74,130,000	73,128,000	72,953,000	65,801,000	67,424,000
Net change in fair value of OTTI securities		(437,000)		(1,638,000)
Noncredit OTTI to credit OTTI	80,000		342,000	664,000
Held-to-maturity Securities | Noncredit OTTI Gains(Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
AOCI balance	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

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Transactions with Related Parties (By Balance Sheet Grouping) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Investments		$ 12,656,498	$ 11,326,734
Advances		76,340,011	74,279,798
MPF loans		4,091,820	3,838,576
Capital stock		3,950,450	3,658,656
Principal Owner [Member]
Related Party Transaction [Line Items]
Advances		55,156,375	56,819,556
Letters of credit	[1]	4,372,957	4,612,680
MPF loans		622,014	696,204
Deposits		17,580	32,420
Capital stock		$ 2,581,823	$ 2,470,117

[1] Letters of credit are off-balance sheet commitments.

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Transactions with Related Parties (Statement of Income Effects) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Related Party Transaction [Line Items]
Interest income on advances (1)		$ 408,974	$ 237,128	$ 730,241	$ 443,350
Interest Income on MPF loans		36,368	31,803	71,828	62,610
Letters of credit fees		637	21	1,410	667
Net gains (losses) on derivatives and hedging activities		4,059	(4,295)	8,171	135
Prepayment fees on advances, net		4	49	4	132
Principal Owner [Member]
Related Party Transaction [Line Items]
Interest income on advances (1)	[1]	308,657	166,669	552,449	326,594
Interest Income on MPF loans		8,542	10,386	17,485	21,568
Contractual Interest Income, Federal Home Loan Bank Advances		299,700	170,800	545,100	334,600
Net gains (losses) on derivatives and hedging activities		8,900	(4,200)	7,200	(9,400)
Amortization of basis adjustments			100	100	1,400
Standby Letters of Credit | Principal Owner [Member]
Related Party Transaction [Line Items]
Letters of credit fees		$ 1,379	$ 1,674	$ 2,951	$ 3,536

[1] For the three and six months ended June 30, 2018, balances include contractual interest income of $299.7 million and $545.1 million, net interest settlements on derivatives in fair value hedge relationships of $8.9 million and $7.2 million and total amortization of basis adjustments was immaterial and $0.1 million. For the three and six months ended June 30, 2017, balances include contractual interest income of $170.8 million and $334.6 million, net interest settlements on derivatives in fair value hedge relationships of $(4.2) million and $(9.4) million and total amortization of basis adjustments was $0.1 million and $1.4 million

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Transactions with Related Parties (Transactions with Other FHLBanks) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Repayments of Federal Home Loan Bank Borrowings				$ 400,000,000
Proceeds from Federal Home Loan Bank Borrowings				400,000,000
Total MPF Loan Volume Purchased			$ 463,609,000	382,700,000
Principal Owner [Member]
Related Party Transaction [Line Items]
Total MPF Loan Volume Purchased	$ 1,569,000	$ 6,501,000	5,438,000	10,031,000
FHLBank of Chicago [Member]
Related Party Transaction [Line Items]
Servicing fee expense	747,000	$ 747,000	1,458,000	$ 1,176,000
Interest-bearing deposits maintained with FHLBank of Chicago	$ 5,888,000		$ 5,888,000		$ 5,340,000

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Estimated Fair Values (Carrying Value and Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017		Jun. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks		$ 161,924	$ 3,414,992
Trading securities		535,095	399,296
AFS securities		8,318,998	9,044,387
Held-to-maturity Securities		3,802,405	1,883,051
Held to maturity securities - fair value		3,802,259	1,894,534
OtherAssetsBankingonBusinessLoansFederalHomeLoanBanksNet		16,214	14,083
Accrued interest receivable		209,555	164,459
Derivative assets		115,533	80,756	[1],[2]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[3],[4]	97,208	71,376	[1],[2]
Mandatorily redeemable capital stock (Note 11)		4,530	5,113		$ 5,019	$ 5,216
Accrued interest payable		170,415	118,473
Derivative liabilities		15,027	19,521	[2]
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	[3],[4]	(89,886)	(43,265)	[2]
Variation Margin for Daily Settled Contracts			11,200
Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks		161,924	3,414,992
Interest-bearing deposits		615,000	275,000
Federal funds sold		0	0
Securities purchased under agreement to resell (2)		0	0
Trading securities		0	9,657
AFS securities		0	2,015
Held to maturity securities - fair value		0	0
Advances		0	0
Accrued interest receivable		0	0
Derivative assets		0	0
Deposits		0	0
Mandatorily redeemable capital stock (Note 11)		4,607	5,201
Accrued interest payable		0	0
Derivative liabilities		0
Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks		0	0
Interest-bearing deposits		5,888	5,340
Federal funds sold		5,974,931	5,649,868
Securities purchased under agreement to resell (2)		1,499,981	499,999
Trading securities		535,095	389,639
AFS securities		7,843,285	8,517,829
Held to maturity securities - fair value		3,560,033	1,611,151
Advances		76,318,912	74,242,369
Accrued interest receivable		209,555	164,459
Derivative assets		18,325	9,380
Deposits		551,092	538,076
Mandatorily redeemable capital stock (Note 11)		0	0
Accrued interest payable		170,338	118,384
Derivative liabilities		104,913	62,786
Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks		0	0
Interest-bearing deposits		0	0
Federal funds sold		0	0
Securities purchased under agreement to resell (2)		0	0
Trading securities		0	0
AFS securities		475,713	524,543
Held to maturity securities - fair value		242,226	283,383
Advances		0	0
Accrued interest receivable		0	0
Derivative assets		0	0
Deposits		0	0
Mandatorily redeemable capital stock (Note 11)		0	0
Accrued interest payable		0	0
Derivative liabilities		0
Estimate of Fair Value, Fair Value Disclosure
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks		161,924	3,414,992
Interest-bearing deposits		620,888	280,340
Federal funds sold		5,974,931	5,649,868
Securities purchased under agreement to resell (2)		1,499,981	499,999
Trading securities		535,095	399,296
AFS securities		8,318,998	9,044,387
Held to maturity securities - fair value		3,802,259	1,894,534
Advances		76,318,912	74,242,369
Accrued interest receivable		209,555	164,459
Derivative assets		115,533	80,756	[5]
Deposits		551,092	538,076
Mandatorily redeemable capital stock (Note 11)	[6]	4,607	5,201
Accrued interest payable	[6]	170,338	118,384
Derivative liabilities		15,027	19,521
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks		161,924	3,414,992
Interest-bearing deposits		620,888	280,340
Federal funds sold		5,975,000	5,650,000
Securities purchased under agreement to resell (2)	[7]	1,500,000	500,000
Trading securities		535,095	399,296
AFS securities		8,318,998	9,044,387
Held-to-maturity Securities		3,802,405	1,883,051
Advances		76,340,011	74,279,798
Accrued interest receivable		209,555	164,459
Derivative assets		115,533	80,756
Deposits		551,092	538,076
Mandatorily redeemable capital stock (Note 11)		4,530	5,113
Accrued interest payable		170,415	118,473
Derivative liabilities		15,027	19,521
Consolidated Obligations, Discount Notes | Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes		0	0
Consolidated Obligations, Discount Notes | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes		26,985,801	36,185,419
Consolidated Obligations, Discount Notes | Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes		0	0
Consolidated Obligations, Discount Notes | Estimate of Fair Value, Fair Value Disclosure
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes		26,985,801	36,185,419
Consolidated Obligations, Discount Notes | Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes		26,988,892	36,193,289
Consolidated Obligation Bonds | Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds		0	0
Consolidated Obligation Bonds | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds		68,441,441	57,439,681
Consolidated Obligation Bonds | Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds		0	0
Consolidated Obligation Bonds | Estimate of Fair Value, Fair Value Disclosure
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds		68,441,441	57,439,681
Consolidated Obligation Bonds | Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds		68,681,867	57,533,722
Mortgage loans held for portfolio, net | Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
MPF & BOB Loans , Net of Allowance		0	0
Mortgage loans held for portfolio, net | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
MPF & BOB Loans , Net of Allowance		4,076,595	3,921,976
Mortgage loans held for portfolio, net | Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
MPF & BOB Loans , Net of Allowance		0	0
Mortgage loans held for portfolio, net | Estimate of Fair Value, Fair Value Disclosure
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
MPF & BOB Loans , Net of Allowance		4,076,595	3,921,976
Mortgage loans held for portfolio, net | Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
MPF & BOB Loans , Net of Allowance		4,171,476	3,923,123
Banking on Business Loans | Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
MPF & BOB Loans , Net of Allowance		0	0
Banking on Business Loans | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
MPF & BOB Loans , Net of Allowance		0	0
Banking on Business Loans | Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
MPF & BOB Loans , Net of Allowance		16,214	14,083
Banking on Business Loans | Estimate of Fair Value, Fair Value Disclosure
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
MPF & BOB Loans , Net of Allowance		16,214	14,083
Banking on Business Loans | Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
MPF & BOB Loans , Net of Allowance		$ 16,214	$ 14,083

[1] To conform with current presentation, $11.2 million of variation margin received from the Clearing House for daily settled contracts has been allocated to the individual instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

[2] To conform with current presentation, $11.2 million of variation margin received from the Clearing House has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

[3] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions, cash collateral and related accrued interest held or placed with the same clearing agent and/or counterparties. Cash collateral posted and related accrued interest was $188.0 million and $114.6 million at June 30, 2018 and December 31, 2017, respectively. Cash collateral received was immaterial for both June 30, 2018 and December 31, 2017.

[4] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions and also cash collateral held and related interest accrued or placed by the Bank with the same clearing agent and/or counterparties.

[5] To conform with current presentation, $11.2 million in variation margin received on cleared derivatives has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with Netting Adjustments and Cash Collateral.

[6] The estimated fair value amount for the mandatorily redeemable capital stock line item includes accrued dividend interest; this amount is excluded from the estimated fair value for the accrued interest payable line item.

[7] Based on the fair value of the related collateral held, the securities purchased under agreements to resell were fully collateralized for the periods presented. There were no offsetting liabilities related to these securities at June 30, 2018 and December 31, 2017. These instruments’ maturity term is overnight.

XML

Estimated Fair Values (Fair Value Measured on Recurring and Nonrecurring Basis) (Details) - USD ($)		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				$ 11,200,000
Trading securities		$ 535,095,000		399,296,000
AFS securities		8,318,998,000		9,044,387,000
Derivative assets		115,533,000		80,756,000	[1],[2]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[3],[4]	97,208,000		71,376,000	[1],[2]
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	[3],[4]	(89,886,000)		(43,265,000)	[2]
Derivative liabilities		15,027,000		19,521,000	[2]
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		0		9,657,000
AFS securities		0		2,015,000
Derivative assets		0		0
Derivative liabilities		0
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		535,095,000		389,639,000
AFS securities		7,843,285,000		8,517,829,000
Derivative assets		18,325,000		9,380,000
Derivative liabilities		104,913,000		62,786,000
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		0		0
AFS securities		475,713,000		524,543,000
Derivative assets		0		0
Derivative liabilities		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		97,208,000	[5]	71,376,000	[6]
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	[7]	(89,886,000)	[4]	(43,265,000)	[6]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		0		9,657,000
AFS securities		0		2,015,000
Derivative assets		0		0
Derivative liabilities		0		0
Total assets at fair value		0		11,672,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		535,095,000		389,639,000
AFS securities		7,843,285,000		8,517,829,000
Derivative assets		18,325,000		9,380,000
Derivative liabilities	[7]	104,913,000		62,786,000
Total assets at fair value		8,396,705,000		8,916,848,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		0		0
AFS securities		475,713,000		524,543,000
Derivative assets		0		0
Derivative liabilities		0		0
Total assets at fair value		475,713,000		524,543,000
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value		10,066,000		25,425,000
Mortgage loans held for portfolio		5,530,000		17,329,000
Real estate owned fair value disclosure		4,536,000		8,096,000
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		97,208,000	[5]	71,376,000	[6],[7]
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset		(89,886,000)	[5]	(43,265,000)	[6],[7]
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0		0
Derivative liabilities		0
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		18,286,000		9,376,000	[7]
Derivative liabilities		104,891,000		62,725,000	[7]
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0		0
Derivative liabilities		0
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		97,972,000
GSE and TVA obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		437,123,000		389,639,000
AFS securities		2,427,065,000		2,820,779,000
GSE and TVA obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0		0
GSE and TVA obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		437,123,000		389,639,000
AFS securities		2,427,065,000		2,820,779,000
GSE and TVA obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		0		0
AFS securities		0
State or local agency obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		260,972,000		269,364,000
State or local agency obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0		0
State or local agency obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		260,972,000		269,364,000
State or local agency obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0
Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	[8]	0		9,657,000
AFS securities	[9]			2,015,000
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities				9,657,000
AFS securities				2,015,000
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities				0
AFS securities				0
Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities				0
U.S. obligations single-family MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		165,728,000		179,273,000
U.S. obligations single-family MBS | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0		0
U.S. obligations single-family MBS | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		165,728,000		179,273,000
U.S. obligations single-family MBS | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0
Private label MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0
Private label MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0
Mortgages [Member] | Forward Contracts [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		0		0
Mortgages [Member] | Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0		0
Derivative liabilities		0
Mortgages [Member] | Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		39,000		4,000
Derivative liabilities		22,000		61,000
Mortgages [Member] | Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0		0
Derivative liabilities		0
Residential Mortgage Backed Securities [Member] | Private label MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		475,713,000		524,543,000
Residential Mortgage Backed Securities [Member] | Private label MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		475,713,000		524,543,000
Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		535,095,000		399,296,000
AFS securities		8,318,998,000		9,044,387,000
Derivative assets		115,533,000		80,756,000	[6]
Derivative liabilities		15,027,000		19,521,000
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		535,095,000		399,296,000
AFS securities		8,318,998,000		9,044,387,000
Derivative assets		115,533,000		80,756,000
Derivative liabilities	[7]	15,027,000		19,521,000
Total assets at fair value		8,969,626,000		9,524,439,000
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value		10,066,000		25,425,000
Mortgage loans held for portfolio		5,530,000		17,329,000
Real estate owned fair value disclosure		4,536,000		8,096,000
Estimate of Fair Value Measurement [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		115,494,000		80,752,000
Derivative liabilities		15,005,000		19,460,000	[6]
Estimate of Fair Value Measurement [Member] | US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		97,972,000
Estimate of Fair Value Measurement [Member] | GSE and TVA obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		437,123,000		389,639,000
AFS securities		2,427,065,000		2,820,779,000
Estimate of Fair Value Measurement [Member] | State or local agency obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		260,972,000		269,364,000
Estimate of Fair Value Measurement [Member] | Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities				9,657,000
AFS securities				2,015,000
Estimate of Fair Value Measurement [Member] | U.S. obligations single-family MBS | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		165,728,000		179,273,000
Estimate of Fair Value Measurement [Member] | Mortgages [Member] | Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		39,000		4,000
Derivative liabilities		22,000		61,000
Estimate of Fair Value Measurement [Member] | Residential Mortgage Backed Securities [Member] | Private label MBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		475,713,000		524,543,000
Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		535,095,000		399,296,000
AFS securities		8,318,998,000		9,044,387,000
Derivative assets		115,533,000		80,756,000
Derivative liabilities		15,027,000		19,521,000
Single Family [Member] | GSE MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		2,521,069,000		2,665,795,000
Single Family [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0
Single Family [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		2,521,069,000		2,665,795,000
Single Family [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0
Single Family [Member] | Estimate of Fair Value Measurement [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		2,521,069,000		2,665,795,000
Multifamily [Member] | GSE MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		2,468,451,000		2,582,618,000
Multifamily [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0
Multifamily [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		2,468,451,000		2,582,618,000
Multifamily [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		0
Multifamily [Member] | Estimate of Fair Value Measurement [Member] | GSE MBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities		$ 2,468,451,000		$ 2,582,618,000

[1] To conform with current presentation, $11.2 million of variation margin received from the Clearing House for daily settled contracts has been allocated to the individual instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

[2] To conform with current presentation, $11.2 million of variation margin received from the Clearing House has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included in netting adjustments and cash collateral.

[3] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions, cash collateral and related accrued interest held or placed with the same clearing agent and/or counterparties. Cash collateral posted and related accrued interest was $188.0 million and $114.6 million at June 30, 2018 and December 31, 2017, respectively. Cash collateral received was immaterial for both June 30, 2018 and December 31, 2017.

[4] Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions and also cash collateral held and related interest accrued or placed by the Bank with the same clearing agent and/or counterparties.

[5] ) Amounts represent the application of the netting requirements that allow the Bank to settle positive and negative positions and also cash collateral and related accrued interest held or placed by the Bank with the same clearing agent and/or counterparties.

[6] To conform with current presentation, $11.2 million in variation margin received on cleared derivatives has been allocated to the individual derivative instruments as of December 31, 2017. Previously, this amount was included with Netting Adjustments and Cash Collateral.

[7] Derivative liabilities represent the total liabilities at fair value.

[8] Reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01, effective January 1, 2018. Refer to Note 1 in this Form 10-Q.

[9] Reclassified to "Other assets" in the Statement of Condition as a result of adopting ASU 2016-01, effective January 1, 2018. Refer to Note 1 in this Form 10-Q.

XML

Estimated Fair Values (Level 3 Reconciliation) (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) loan	Jun. 30, 2017 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net OTTI losses, credit portion	[1]	$ (80)	$ 0	$ (342)	$ (664)
Private label MBS [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Number of Available-for-sale Securities Transferred from Held-to-maturity Securities | loan				0
Residential Mortgage Backed Securities [Member] | Private label MBS [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 | Available-for-sale Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period		503,647	642,015	$ 524,543	673,976
Accretion of credit losses in interest income		3,794	5,345	7,579	10,466
Net OTTI losses, credit portion		(80)	0	(342)	(664)
Net unrealized gains on AFS in OCI		8	25	30	91
Reclassification of non-credit portion included in net income		80	0	342	664
Net change in fair value on OTTI AFS in OCI		0	(437)	0	(1,638)
Unrealized gains (losses) on OTTI AFS in OCI		3,149	8,766	3,062	7,680
Purchases, issuances, sales, and settlements:
Settlements		(34,885)	(45,338)	(59,501)	(80,199)
Balance at June 30		475,713	610,376	475,713	610,376
Total amount of losses for the period presented included in earnings attributable to the change in unrealized gains or losses relating to assets and liabilities still held at period end		$ 3,714	$ 4,852	$ 7,237	$ 9,296

[1] For the three months ended June 30, 2018 and 2017, additional OTTI credit losses for which an OTTI charge was previously recognized relate to all securities that were previously impaired prior to April 1 of the applicable year. For the six months ended June 30, 2018 and 2017, additional OTTI credit losses for which an OTTI charge was previously recognized relate to all securities that were previously impaired prior to January 1 of the applicable year.

XML

Commitments and Contingencies (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Off-balance Sheet Risks, with annual renewal option		$ 2,900,000	$ 2,200,000
Other Liabilities - Standby Letter of Credit Fees		$ 40,264	235,761
Maximum Commitment Period		60 days
Standby Letters of Credit Issuance Commitments [Member]
Loss Contingencies [Line Items]
Total		$ 165,900	44,100
Open RepoPlus Advance Product
Loss Contingencies [Line Items]
Open Repo Plus Product Outstanding		$ 9,200,000	8,000,000
Maximum
Loss Contingencies [Line Items]
Letter of Credit Renewal Period		5 years
Standby letters of credit outstanding (1) (2)
Loss Contingencies [Line Items]
Expiration Date Within One Year	[1],[2]	$ 18,638,742
Expiration Date After One Year	[1],[2]	409
Total	[1],[2]	18,639,151	18,965,939
Other Liabilities - Standby Letter of Credit Fees		4,000	3,900
Commitments to fund additional advances and BOB loans
Loss Contingencies [Line Items]
Expiration Date Within One Year		15,684
Expiration Date After One Year		0
Total		15,684	43,972
Commitments to fund or purchase mortgage loans | Mortgages [Member]
Loss Contingencies [Line Items]
Expiration Date Within One Year		35,814
Expiration Date After One Year		0
Total		35,814	25,487
Unsettled consolidated obligation bonds, at par
Loss Contingencies [Line Items]
Expiration Date Within One Year		1,863,000
Expiration Date After One Year		0
Total		1,863,000	1,076,200
Federal Home Loan Bank, Consolidated Obligations, Discount Notes [Member]
Loss Contingencies [Line Items]
Expiration Date Within One Year		0
Expiration Date After One Year		0
Total		$ 0	$ 565,000

[1] Excludes approved requests to issue future standby letters of credit of $165.9 million and $44.1 million at June 30, 2018 and December 31, 2017, respectively.

[2] Letters of credit in the amount of $2.9 billion and $2.2 billion at June 30, 2018 and December 31, 2017, respectively, have annual renewal language that, as long as both parties agree, permit the letter of credit to be renewed for an additional year with a maximum renewal period of approximately 5 years.