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 September 30, 2012

OR

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

Commission File Number: 000-51402

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

FEDERAL HOME LOAN BANK OF BOSTON

(Exact name of registrant as specified in its charter) 

Federally chartered corporation (State or other jurisdiction of incorporation or organization)	04-6002575 (I.R.S. employer identification number)
800 Boylston Street Boston, MA (Address of principal executive offices)	02199 (Zip code)

(617) 292-9600

(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  o No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). x Yes  o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer o	Accelerated filer o
Non-accelerated filer x (Do not check if a smaller reporting company)	Smaller reporting company o

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

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

	Shares outstanding as of October 31, 2012
Class A Stock, par value $100	zero
Class B Stock, par value $100	36,542,526

Federal Home Loan Bank of Boston

Form 10-Q

Table of Contents

PART I.	FINANCIAL INFORMATION
Item 1.	Financial Statements (unaudited)	3
	Statements of Condition	3
	Statements of Operations	4
	Statements of Comprehensive Income	5
	Statements of Capital	6
	Statements of Cash Flows	7
	Notes to Financial Statements	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	53
	Executive Summary	54
	Selected Financial Data	57
	Results of Operations	58
	Financial Condition	71
	Liquidity and Capital Resources	94
	Critical Accounting Estimates	99
	Recent Accounting Developments	101
	Legislative and Regulatory Developments	101
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	103
Item 4.	Controls and Procedures	108
PART II.	OTHER INFORMATION	108
Item 1.	Legal Proceedings	108
Item 1A.	Risk Factors	109
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	110
Item 3.	Defaults Upon Senior Securities	110
Item 4.	Mine Safety Disclosures	110
Item 5.	Other Information	110
Item 6.	Exhibits	111

2

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

FEDERAL HOME LOAN BANK OF BOSTON STATEMENTS OF CONDITION (dollars and shares in thousands, except par value) (unaudited)
	September 30, 2012			December 31, 2011
ASSETS
Cash and due from banks	$	306,166		$	112,094
Interest-bearing deposits	261			177
Securities purchased under agreements to resell	5,125,000			6,900,000
Federal funds sold	1,100,000			2,270,000
Investment securities:
Trading securities	279,420			274,164
Available-for-sale securities - includes $8,313 and $119,118 pledged as collateral at September 30, 2012, and December 31, 2011, respectively that may be repledged	5,764,096			5,280,199
Held-to-maturity securities - includes $105,687 and $128,073 pledged as collateral at September 30, 2012, and December 31, 2011, respectively that may be repledged (a)	5,679,296			6,655,008
Total investment securities	11,722,812			12,209,371
Advances	23,915,687			25,194,898
Mortgage loans held for portfolio, net of allowance for credit losses of $5,514 and $7,800 at September 30, 2012, and December 31, 2011, respectively	3,431,534			3,109,223
Accrued interest receivable	95,950			116,517
Premises, software, and equipment, net	3,907			4,518
Derivative assets, net	529			16,521
Other assets	40,689			35,018
Total Assets	$	45,742,535		$	49,968,337
LIABILITIES
Deposits:
Interest-bearing	$	648,781		$	627,127
Non-interest-bearing	36,547			27,119
Total deposits	685,328			654,246
Consolidated obligations:
Bonds	28,238,899			29,879,460
Discount notes	11,993,572			14,651,793
Total consolidated obligations	40,232,471			44,531,253
Mandatorily redeemable capital stock	215,863			227,429
Accrued interest payable	128,966			110,782
Affordable Housing Program (AHP) payable	45,733			34,241
Derivative liabilities, net	949,735			905,304
Other liabilities	17,863			16,048
Total liabilities	42,275,959			46,479,303
Commitments and contingencies (Note 18)
CAPITAL
Capital stock – Class B – putable ($100 par value), 34,330 shares and 36,253 shares issued and outstanding at September 30, 2012, and December 31, 2011, respectively	3,433,016			3,625,348
Retained earnings:
Unrestricted	484,574			375,158
Restricted	53,660			22,939
Total retained earnings	538,234			398,097
Accumulated other comprehensive loss	(504,674		)	(534,411		)
Total capital	3,466,576			3,489,034
Total Liabilities and Capital	$	45,742,535		$	49,968,337

_______________________________________

(a)   Fair values of held-to-maturity securities were $5,915,270 and $6,663,066 at September 30, 2012, and December 31, 2011, respectively.

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

3

FEDERAL HOME LOAN BANK OF BOSTON STATEMENTS OF OPERATIONS (dollars in thousands) (unaudited)
	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
INTEREST INCOME
Advances	$	72,551		$	80,163		$	225,037		$	249,670
Prepayment fees on advances, net	11,874			9,066			44,348			20,393
Securities purchased under agreements to resell	2,455			502			7,069			1,447
Federal funds sold	463			2,211			1,491			5,969
Trading securities	2,522			3,034			7,608			13,270
Available-for-sale securities	19,106			15,374			50,869			49,425
Held-to-maturity securities	35,057			42,647			111,445			123,476
Prepayment fees on investments	139			806			341			1,355
Mortgage loans held for portfolio	34,214			37,267			103,527			113,456
Other	2			1			3			2
Total interest income	178,383			191,071			551,738			578,463
INTEREST EXPENSE
Consolidated obligations - bonds	101,584			108,896			311,943			345,012
Consolidated obligations - discount notes	3,726			1,546			8,222			8,808
Deposits	11			42			42			244
Mandatorily redeemable capital stock	260			177			834			446
Other borrowings	1			—			2			3
Total interest expense	105,582			110,661			321,043			354,513
NET INTEREST INCOME	72,801			80,410			230,695			223,950
Reduction of provision for credit losses	(523		)	—			(2,057		)	(1,458		)
NET INTEREST INCOME AFTER REDUCTION OF PROVISION FOR CREDIT LOSSES	73,324			80,410			232,752			225,408
OTHER INCOME (LOSS)
Total other-than-temporary impairment losses on investment securities	(2,077		)	(8,336		)	(14,218		)	(31,982		)
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	985			1,126			8,674			(41,606		)
Net other-than-temporary impairment losses on investment securities, credit portion	(1,092		)	(7,210		)	(5,544		)	(73,588		)
Loss on early extinguishment of debt	(4,992		)	—			(16,993		)	—
Service fees	1,483			2,046			4,474			6,503
Net unrealized gains on trading securities	4,669			13,638			8,291			17,594
Net losses on derivatives and hedging activities	(2,086		)	(17,474		)	(8,509		)	(23,527		)
Realized net gain from sale of available-for-sale securities	—			—			—			12,801
Other	228			131			2,753			469
Total other loss	(1,790		)	(8,869		)	(15,528		)	(59,748		)
OTHER EXPENSE
Compensation and benefits	8,405			8,111			25,723			24,366
Other operating expenses	4,380			5,656			13,442			14,974
Federal Housing Finance Agency	1,073			1,162			3,472			3,622
Office of Finance	625			665			2,066			2,156
Other	556			388			1,753			3,987
Total other expense	15,039			15,982			46,456			49,105
INCOME BEFORE ASSESSMENTS	56,495			55,559			170,768			116,555
AHP	5,675			5,573			17,160			10,592
Resolution Funding Corporation (REFCorp)	—			—			—			11,078
Total assessments	5,675			5,573			17,160			21,670
NET INCOME	$	50,820		$	49,986		$	153,608		$	94,885

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

4

FEDERAL HOME LOAN BANK OF BOSTON STATEMENTS OF COMPREHENSIVE INCOME THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2012 and 2011 (dollars in thousands) (unaudited)
	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Net income	$	50,820		$	49,986		$	153,608		$	94,885
Other comprehensive income:
Net unrealized gains (losses) on available-for-sale securities
Net unrealized gains (losses)	17,525			(30,389		)	15,643			(5,552		)
Reclassification adjustment for realized gains included in net income	—			—			—			(12,801		)
Total net unrealized gains (losses) on available-for-sale securities	17,525			(30,389		)	15,643			(18,353		)
Net noncredit portion of other-than-temporary impairment losses on held-to-maturity securities
Noncredit portion	(2,013		)	(5,231		)	(10,931		)	(16,910		)
Reclassification adjustment for noncredit portion of other-than-temporary impairment losses recognized as credit losses included in net income	1,028			4,105			2,257			58,516
Accretion of noncredit portion	17,838			35,288			56,131			125,197
Total net noncredit portion of other-than-temporary impairment losses on held-to-maturity securities	16,853			34,162			47,457			166,803
Net unrealized (losses) gains relating to hedging activities
Unrealized losses	(10,448		)	(25,158		)	(32,874		)	(26,843		)
Reclassification adjustment for previously deferred hedging gains and losses included in net income	4			4			11			11
Total net unrealized losses relating to hedging activities	(10,444		)	(25,154		)	(32,863		)	(26,832		)
Pension and postretirement benefits	(166		)	(75		)	(500		)	(224		)
Total other comprehensive income (loss)	23,768			(21,456		)	29,737			121,394
Total comprehensive income	$	74,588		$	28,530		$	183,345		$	216,279

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

5

FEDERAL HOME LOAN BANK OF BOSTON STATEMENTS OF CAPITAL NINE MONTHS ENDED SEPTEMBER 30, 2012 AND 2011 (dollars and shares in thousands) (unaudited)
	Capital Stock Class B – Putable					Retained Earnings								Accumulated Other Comprehensive Loss
	Shares		Par Value			Unrestricted			Restricted		Total						Total Capital
BALANCE, DECEMBER 31, 2010	36,644		$	3,664,425		$	249,191		$	—	$	249,191		$	(638,111	)	$	3,275,505
Proceeds from sale of capital stock	601		60,145														60,145
Shares reclassified to mandatorily redeemable capital stock	(1,408	)	(140,821		)												(140,821		)
Comprehensive income						84,888			9,997		94,885			121,394			216,279
Cash dividends on capital stock						(7,980		)			(7,980		)				(7,980		)
BALANCE, SEPTEMBER 30, 2011	35,837		$	3,583,749		$	326,099		$	9,997	$	336,096		$	(516,717	)	$	3,403,128
BALANCE, DECEMBER 31, 2011	36,253		$	3,625,348		$	375,158		$	22,939	$	398,097		$	(534,411	)	$	3,489,034
Proceeds from sale of capital stock	461		46,094														46,094
Repurchase of capital stock	(2,374	)	(237,412		)												(237,412		)
Shares reclassified to mandatorily redeemable capital stock	(10	)	(1,014		)												(1,014		)
Comprehensive income						122,887			30,721		153,608			29,737			183,345
Cash dividends on capital stock						(13,471		)			(13,471		)				(13,471		)
BALANCE, SEPTEMBER 30, 2012	34,330		$	3,433,016		$	484,574		$	53,660	$	538,234		$	(504,674	)	$	3,466,576

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

6

FEDERAL HOME LOAN BANK OF BOSTON STATEMENTS OF CASH FLOWS (dollars in thousands) (unaudited)
	For the Nine Months Ended September 30,
	2012			2011
OPERATING ACTIVITIES
Net income	$	153,608		$	94,885
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	(13,299		)	(2,779		)
Reduction of provision for credit losses	(2,057		)	(1,458		)
Change in net fair-value adjustments on derivatives and hedging activities	85,822			62,316
Net other-than-temporary impairment losses on investment securities, credit portion	5,544			73,588
Loss on early extinguishment of debt	16,993			—
Realized net gain from sale of available-for-sale securities	—			(12,801		)
Other adjustments	(312		)	(400		)
Net change in:
Market value of trading securities	(8,291		)	(17,594		)
Accrued interest receivable	20,567			34,883
Other assets	2,150			2,114
Accrued interest payable	18,181			1,929
Other liabilities	12,393			17,620
Total adjustments	137,691			157,418
Net cash provided by operating activities	291,299			252,303
INVESTING ACTIVITIES
Net change in:
Interest-bearing deposits	(84		)	(74		)
Securities purchased under agreements to resell	1,775,000			(1,325,000		)
Federal funds sold	1,170,000			2,205,000
Premises, software, and equipment	(784		)	(2,168		)
Trading securities:
Net decrease in short-term	—			5,320,000
Proceeds from long-term	3,035			3,433
Available-for-sale securities:
Proceeds from long-term	1,128,619			2,510,471
Purchases of long-term	(1,615,479		)	(492,011		)
Held-to-maturity securities:
Proceeds from long-term	1,016,930			1,046,077
Purchases of long-term	—			(1,814,412		)
Advances to members:
Proceeds	110,843,079			101,596,921
Disbursements	(109,610,045		)	(98,566,753		)
Mortgage loans held for portfolio:
Proceeds	610,854			459,510
Purchases	(947,759		)	(352,182		)
Proceeds from sale of foreclosed assets	7,904			8,721
Net cash provided by investing activities	4,381,270			10,597,533
FINANCING ACTIVITIES
Net change in deposits	12,079			4,686

7

Net payments on derivatives with a financing element	(27,101		)	(29,768		)
Net proceeds from issuance of consolidated obligations:
Discount notes	101,912,981			439,183,592
Bonds	7,879,848			11,234,003
Bonds transferred from other FHLBanks	130,276			—
Payments for maturing and retiring consolidated obligations:
Discount notes	(104,572,190		)	(447,033,139		)
Bonds	(9,597,021		)	(13,925,150		)
Proceeds from issuance of capital stock	46,094			60,145
Payments for redemption of mandatorily redeemable capital stock	(12,580		)	(3,469		)
Payments for repurchase of capital stock	(237,412		)	—
Cash dividends paid	(13,471		)	(7,980		)
Net cash used in financing activities	(4,478,497		)	(10,517,080		)
Net increase in cash and due from banks	194,072			332,756
Cash and due from banks at beginning of the year	112,094			6,151
Cash and due from banks at period end	$	306,166		$	338,907
Supplemental disclosures:
Interest paid	$	357,257		$	391,404
AHP payments	$	4,313		$	4,707
REFCorp assessments refunded, net	$	—		$	(2,512	)
Noncash transfers of mortgage loans held for portfolio to real estate owned (REO)	$	10,435		$	8,533

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

8

FEDERAL HOME LOAN BANK OF BOSTON

NOTES TO FINANCIAL STATEMENTS

Note 1 — Basis of Presentation

The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete annual financial statements. In the opinion of management, all adjustments considered necessary have been included. All such adjustments consist of normal recurring accruals. The presentation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. The results of operations for interim periods are not necessarily indicative of the results to be expected for the year ending December 31, 2012. The unaudited financial statements should be read in conjunction with the Federal Home Loan Bank of Boston's audited financial statements and related notes in our Annual Report on Form 10-K for the year ended December 31, 2011, filed with the Securities and Exchange Commission (the SEC) on March 23, 2012 (the 2011 Annual Report). Unless otherwise indicated or the context requires otherwise, all references in this discussion to “the Bank,” "we," "us," "our," or similar references mean the Federal Home Loan Bank of Boston.

Note 2 — Recently Issued Accounting Standards and Interpretations

Disclosures about Offsetting Assets and Liabilities. On December 16, 2011, the Financial Accounting Standards Board (the FASB) and the International Accounting Standards Board (the IASB) issued common disclosure requirements intended to help investors and other financial statement users better assess the effect or potential effect of offsetting arrangements on a company's financial position, whether a company's financial statements are prepared on the basis of GAAP or International Financial Reporting Standards (IFRS). This guidance will require us to disclose both gross and net information about financial instruments, including derivative instruments, which are either offset on our statement of condition or subject to an enforceable master netting arrangement or similar agreement. This guidance will be effective for interim and annual periods beginning on January 1, 2013, and will be applied retrospectively for all comparative periods presented. The adoption of this guidance will result in increased interim and annual financial statement disclosures, but will not affect our financial condition, results of operations, or cash flows.

Presentation of Comprehensive Income. On June 16, 2011, the FASB issued guidance to increase the prominence of other comprehensive income in financial statements. This guidance requires an entity that reports items of other comprehensive income to present comprehensive income in either a single financial statement or in two consecutive financial statements. In a single continuous statement, an entity is required to present the components of net income and total net income, the components of other comprehensive income, and a total for other comprehensive income, as well as a total for comprehensive income. In a two-statement approach, an entity is required to present the components of net income and total net income in its statement of net income. The statement of other comprehensive income should follow immediately and include the components of other comprehensive income as well as totals for both other comprehensive income and comprehensive income. This guidance eliminates the option to present other comprehensive income in the statement of changes in stockholders' equity. We have elected the two-statement approach for interim and annual periods beginning on January 1, 2012, and we have applied this guidance retrospectively for all periods presented. The adoption of this guidance is limited to the presentation of our interim and annual financial statements and did not affect our financial condition, results of operations, or cash flows. See Note 15 — Accumulated Other Comprehensive Loss for disclosures required under this amended guidance.

On December 23, 2011, the FASB issued guidance to defer the effective date of the new requirement to present

reclassifications of items out of accumulated other comprehensive income in the income statement. This guidance was effective

for interim and annual periods beginning on January 1, 2012. We adopted the remaining guidance contained in the new accounting standard for the presentation of comprehensive income.

Common Fair Value Measurement and Disclosure Requirements in GAAP and IFRS. On May 12, 2011, the FASB and the IASB issued substantially converged guidance on fair-value measurement and disclosure requirements. This guidance clarifies how fair-value accounting should be applied where its use is already required or permitted by other guidance within GAAP or IFRS. These amendments do not require additional fair-value measurements. This guidance generally represents clarifications to the application of existing fair-value measurement and disclosure requirements, as well as some instances where a particular principle or requirement for measuring fair value or disclosing information about fair-value measurements has changed. This guidance became effective for interim and annual periods beginning on January 1, 2012, and was applied prospectively. The adoption of this guidance resulted in additional interim and annual financial statement disclosures, but did not have a material effect on our financial condition, results of operations, or cash flows. See Note 17 — Fair Value for disclosures under this

9

amended guidance.

Reconsideration of Effective Control for Repurchase Agreements. On April 29, 2011, the FASB issued guidance to improve the accounting for repurchase agreements and other agreements that both entitle and obligate a transferor to repurchase or redeem financial assets before their maturity. This guidance amends the existing criteria for determining whether or not a transferor has retained effective control over financial assets transferred under a repurchase agreement. A secured borrowing is recorded when effective control over the transferred financial assets is maintained while a sale is recorded when effective control over the transferred financial assets has not been maintained. The new guidance removes from the assessment of effective control: (1) the criterion requiring the transferor to have the ability to repurchase or redeem financial assets before their maturity on substantially the agreed terms, even in the event of the transferee's default, and (2) the collateral maintenance implementation guidance related to that criterion. This guidance was effective for interim and annual periods beginning on January 1, 2012, and was applied prospectively to transactions or modifications of existing transactions that occurred on or after the effective date. The adoption of this guidance did not have a material effect on our financial condition, results of operations, or cash flows.

Recently Issued Regulatory Guidance

Framework for Adversely Classifying Loans, Other Real Estate Owned, and Other Assets and Listing Assets for Special Mention. On April 9, 2012, the Federal Housing Finance Agency (the Finance Agency) issued Advisory Bulletin 2012-02, Framework for Adversely Classifying Loans, Other Real Estate Owned, and Other Assets and Listing Assets for Special Mention (AB 2012-02). AB 2012-02 establishes a standard and uniform methodology for classifying certain assets other than investment securities, and prescribes the timing of asset charge-offs based on these classifications. The guidance in AB 2012-02 is generally consistent with the Uniform Retail Credit Classification and Account Management Policy issued by the federal banking regulators in June 2000. AB 2012-02 states that it was effective upon issuance. The Federal Home Loan Banks (the FHLBanks or the FHLBank System) are currently assessing the provisions of AB 2012-02 in coordination with the Finance Agency and therefore, we have not yet determined either when we will implement the guidance or its effect on our financial condition, results of operations, and cash flows.

Note 3 — Trading Securities

Major Security Types. Our trading securities as of September 30, 2012, and December 31, 2011, were (dollars in thousands):

	September 30, 2012		December 31, 2011
Mortgage-backed-securities (MBS)
United States (U.S.) government-guaranteed – residential	$	17,496	$	18,880
Government sponsored enterprises (GSEs) – residential	5,380		6,663
GSEs – commercial	256,544		248,621
Total	$	279,420	$	274,164

Net unrealized gains on trading securities for the nine months endedSeptember 30, 2012 and 2011, amounted to $8.3 million and $17.6 million for securities held on September 30, 2012 and 2011, respectively.

We do not participate in speculative trading practices and typically hold these investments over a longer time horizon.

Note 4 — Available-for-Sale Securities

Major Security Types. Our available-for-sale securities as of September 30, 2012, were (dollars in thousands):

10

			Amounts Recorded in Accumulated Other Comprehensive Loss
	Amortized Cost (1)		Unrealized Gains		Unrealized Losses			Fair  Value
Supranational institutions	$	510,971	$	—	$	(37,555	)	$	473,416
Corporate bonds (2)	307,859		366		—			308,225
U.S. government-owned corporations	339,598		—		(45,998		)	293,600
GSEs	2,132,594		33,577		(17,705		)	2,148,466
	3,291,022		33,943		(101,258		)	3,223,707
MBS
U.S. government guaranteed – residential	76,397		560		—			76,957
GSEs – residential	2,328,012		33,505		—			2,361,517
GSEs – commercial	101,582		333		—			101,915
	2,505,991		34,398		—			2,540,389
Total	$	5,797,013	$	68,341	$	(101,258	)	$	5,764,096

_______________________

(1)Amortized cost of available-for-sale securities includes adjustments made to the cost basis of an investment for accretion, amortization, collection of cash, and fair-value hedge accounting adjustments.

(2) Consists of corporate debentures guaranteed by the Federal Deposit Insurance Corporation (the FDIC) under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. government.

Our available-for-sale securities as of December 31, 2011, were (dollars in thousands):

			Amounts Recorded in Accumulated Other Comprehensive Loss
	Amortized Cost (1)		Unrealized Gains		Unrealized Losses			Fair  Value
Supranational institutions	$	504,630	$	—	$	(35,388	)	$	469,242
Corporate bonds (2)	561,942		2,370		—			564,312
U.S. government-owned corporations	338,169		—		(53,325		)	284,844
GSEs	2,750,131		52,020		(19,730		)	2,782,421
	4,154,872		54,390		(108,443		)	4,100,819
MBS
U.S. government guaranteed – residential	90,882		346		—			91,228
GSEs – residential	978,998		5,810		—			984,808
GSEs – commercial	104,007		—		(663		)	103,344
	1,173,887		6,156		(663		)	1,179,380
Total	$	5,328,759	$	60,546	$	(109,106	)	$	5,280,199

_______________________

(1)Amortized cost of available-for-sale securities includes adjustments made to the cost basis of an investment for accretion, amortization, collection of cash, and fair-value hedge accounting adjustments.

(2)Consists of corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. government.

As of September 30, 2012, the amortized cost of our available-for-sale securities included net premiums of $75.3 million. Of that amount, $57.5 million of net premiums related to non-MBS and $17.8 million of net premiums related to MBS. As of December 31, 2011, the amortized cost of our available-for-sale securities included net premiums of $77.2 million. Of that amount, $81.0 million of net premiums related to non-MBS and $3.8 million of net discounts related to MBS.

At September 30, 2012, and December 31, 2011, 22.0 percent and 25.4 percent, respectively, of our fixed-rate available-for-sale securities were swapped to a floating rate.

11

The following table summarizes our available-for-sale securities with unrealized losses as of September 30, 2012, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands): 

	Less than 12 Months				12 Months or More					Total
	Fair  Value		Unrealized  Losses		Fair  Value		Unrealized  Losses			Fair  Value		Unrealized  Losses
Supranational institutions	$	—	$	—	$	473,416	$	(37,555	)	$	473,416	$	(37,555	)
U.S. government-owned corporations	—		—		293,600		(45,998		)	293,600		(45,998		)
GSEs	—		—		124,026		(17,705		)	124,026		(17,705		)
Total temporarily impaired	$	—	$	—	$	891,042	$	(101,258	)	$	891,042	$	(101,258	)

The following table summarizes our available-for-sale securities with unrealized losses as of December 31, 2011, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands):

	Less than 12 Months				12 Months or More					Total
	Fair  Value		Unrealized  Losses		Fair  Value		Unrealized  Losses			Fair  Value		Unrealized  Losses
Supranational institutions	$	—	$	—	$	469,242	$	(35,388	)	$	469,242	$	(35,388	)
U.S. government-owned corporations	—		—		284,844		(53,325		)	284,844		(53,325		)
GSEs	—		—		121,025		(19,730		)	121,025		(19,730		)
	—		—		875,111		(108,443		)	875,111		(108,443		)
MBS
GSEs – commercial	—		—		103,344		(663		)	103,344		(663		)
Total temporarily impaired	$	—	$	—	$	978,455	$	(109,106	)	$	978,455	$	(109,106	)

Redemption Terms. The amortized cost and fair value of our available-for-sale securities by contractual maturity at September 30, 2012 and December 31, 2011, were (dollars in thousands):

	September 30, 2012				December 31, 2011
Year of Maturity	Amortized Cost		Fair  Value		Amortized Cost		Fair  Value
Due in one year or less	$	1,357,937	$	1,367,719	$	1,213,636	$	1,217,440
Due after one year through five years	940,786		964,947		1,957,683		2,008,268
Due after five years through 10 years	—		—		—		—
Due after 10 years	992,299		891,041		983,553		875,111
	3,291,022		3,223,707		4,154,872		4,100,819
MBS (1)	2,505,991		2,540,389		1,173,887		1,179,380
Total	$	5,797,013	$	5,764,096	$	5,328,759	$	5,280,199

_______________________

(1) MBS are not presented by contractual maturity because their expected maturities will likely differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay obligations with or without call or prepayment fees.

Sale of Available-for-Sale Securities. The following table shows the proceeds from sale and gross gains and losses realized on the sale of our available-for-sale securities (dollars in thousands):

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	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
Proceeds from sale of available-for-sale securities	$	—	$	—	$	—	$	2,127,944
Gross realized gains from sale of available-for-sale securities	$	—	$	—	$	—	$	14,415
Gross realized losses from sale of available-for-sale securities	—		—		—		(1,614		)
Net realized gains from sale of available-for-sale securities	$	—	$	—	$	—	$	12,801

Note 5 — Held-to-Maturity Securities

Major Security Types. Our held-to-maturity securities as of September 30, 2012, were (dollars in thousands):

	Amortized Cost		Other-Than-Temporary Impairment Recognized in Accumulated Other Comprehensive Loss			Carrying Value		Gross Unrecognized Holding Gains		Gross Unrecognized Holding Losses			Fair Value
U.S. agency obligations	$	14,666	$	—		$	14,666	$	1,435	$	—		$	16,101
State or local housing-finance-agency obligations (HFA securities)	191,969		—			191,969		70		(28,402		)	163,637
GSEs	69,676		—			69,676		1,857		—			71,533
	276,311		—			276,311		3,362		(28,402		)	251,271
MBS
U.S. government guaranteed – residential	41,469		—			41,469		948		—			42,417
U.S. government guaranteed – commercial	463,211		—			463,211		9,021		—			472,232
GSEs – residential	2,523,565		—			2,523,565		84,931		(379		)	2,608,117
GSEs – commercial	1,016,514		—			1,016,514		92,621		—			1,109,135
Private-label – residential	1,725,069		(402,366		)	1,322,703		123,849		(47,017		)	1,399,535
Private-label – commercial	10,335		—			10,335		419		—			10,754
Asset-backed securities (ABS) backed by home equity loans	26,361		(1,173		)	25,188		509		(3,888		)	21,809
	5,806,524		(403,539		)	5,402,985		312,298		(51,284		)	5,663,999
Total	$	6,082,835	$	(403,539	)	$	5,679,296	$	315,660	$	(79,686	)	$	5,915,270

Our held-to-maturity securities as of December 31, 2011, were (dollars in thousands):

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	Amortized Cost		Other-Than-Temporary Impairment Recognized in Accumulated Other Comprehensive Loss			Carrying Value		Gross Unrecognized Holding Gains		Gross Unrecognized Holding Losses			Fair Value
U.S. agency obligations	$	18,721	$	—		$	18,721	$	1,697	$	—		$	20,418
HFA securities	202,438		—			202,438		61		(34,459		)	168,040
GSEs	70,950		—			70,950		2,510		—			73,460
	292,109		—			292,109		4,268		(34,459		)	261,918
MBS
U.S. government guaranteed – residential	50,912		—			50,912		934		—			51,846
U.S. government guaranteed – commercial	483,938		—			483,938		4,685		—			488,623
GSEs – residential	3,024,212		—			3,024,212		78,548		(1,105		)	3,101,655
GSEs – commercial	1,247,688		—			1,247,688		86,252		—			1,333,940
Private-label – residential	1,969,237		(449,654		)	1,519,583		18,789		(145,285		)	1,393,087
Private-label – commercial	10,541		—			10,541		549		—			11,090
ABS backed by home equity loans	27,367		(1,342		)	26,025		128		(5,246		)	20,907
	6,813,895		(450,996		)	6,362,899		189,885		(151,636		)	6,401,148
Total	$	7,106,004	$	(450,996	)	$	6,655,008	$	194,153	$	(186,095	)	$	6,663,066

As of September 30, 2012, the amortized cost of our held-to-maturity securities included net discounts of $507.8 million. Of that amount, net premiums of $2.4 million related to non-MBS and net discounts of $510.1 million related to MBS. As of December 31, 2011, the amortized cost of our held-to-maturity securities included net discounts of $536.4 million. Of that amount, net premiums of $3.6 million related to non-MBS and net discounts of $540.0 million related to MBS.

The following table summarizes our held-to-maturity securities with unrealized losses as of September 30, 2012, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands). 

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair  Value		Unrealized Losses			Fair Value		Unrealized Losses
HFA securities	$	334	$	(1	)	$	153,689	$	(28,401	)	$	154,023	$	(28,402	)
MBS
GSEs – residential	30,146		(46		)	65,930		(333		)	96,076		(379		)
Private-label – residential	—		—			1,364,825		(330,538		)	1,364,825		(330,538		)
ABS backed by home equity loans	—		—			21,118		(4,593		)	21,118		(4,593		)
	30,146		(46		)	1,451,873		(335,464		)	1,482,019		(335,510		)
Total	$	30,480	$	(47	)	$	1,605,562	$	(363,865	)	$	1,636,042	$	(363,912	)

The following table summarizes our held-to-maturity securities with unrealized losses as of December 31, 2011, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands). 

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	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair  Value		Unrealized Losses			Fair Value		Unrealized Losses
HFA securities	$	418	$	(2	)	$	150,968	$	(34,457	)	$	151,386	$	(34,459	)
MBS
GSEs – residential	239,995		(558		)	41,723		(547		)	281,718		(1,105		)
Private-label – residential	18,922		(4,138		)	1,369,550		(572,326		)	1,388,472		(576,464		)
ABS backed by home equity loans	—		—			20,906		(6,463		)	20,906		(6,463		)
	258,917		(4,696		)	1,432,179		(579,336		)	1,691,096		(584,032		)
Total	$	259,335	$	(4,698	)	$	1,583,147	$	(613,793	)	$	1,842,482	$	(618,491	)

Redemption Terms. The amortized cost and fair value of our held-to-maturity securities by contractual maturity at September 30, 2012, and December 31, 2011, are shown below (dollars in thousands). Expected maturities of some securities and MBS may differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay their obligations with or without call or prepayment fees.

	September 30, 2012						December 31, 2011
Year of Maturity	Amortized Cost		Carrying Value (1)		Fair Value		Amortized Cost		Carrying Value (1)		Fair Value
Due in one year or less	$	—	$	—	$	—	$	1,360	$	1,360	$	1,369
Due after one year through five years	70,010		70,010		71,868		71,370		71,370		73,878
Due after five years through 10 years	34,351		34,351		35,436		38,405		38,405		39,733
Due after 10 years	171,950		171,950		143,967		180,974		180,974		146,938
	276,311		276,311		251,271		292,109		292,109		261,918
MBS (2)	5,806,524		5,402,985		5,663,999		6,813,895		6,362,899		6,401,148
Total	$	6,082,835	$	5,679,296	$	5,915,270	$	7,106,004	$	6,655,008	$	6,663,066

_______________________

(1)Carrying value of held-to-maturity securities represents the sum of amortized cost and the amount of noncredit-related other-than-temporary impairment recognized in accumulated other comprehensive loss.

(2) MBS are not presented by contractual maturity because their expected maturities will likely differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay their obligations with or without call or prepayment fees.

Note 6 — Other-Than-Temporary Impairment

We evaluate our individual available-for-sale and held-to-maturity securities for other-than-temporary impairment each quarter. As part of our evaluation of securities for other-than-temporary impairment, we consider whether we intend to sell each security for which fair value is less than amortized cost or whether it is more likely than not that we will be required to sell the security before the anticipated recovery of the remaining amortized cost. If either of these conditions is met, we recognize an other-than-temporary impairment charge in earnings equal to the entire difference between the security's amortized cost basis and its fair value at the statement of condition date. For securities in an unrealized loss position that meet neither of these conditions and for all residential private-label MBS, we perform a cash-flow analysis to determine whether the entire amortized cost basis of these impaired securities, including all previously other-than-temporarily impaired securities, will be recovered. If we do not expect to recover the entire amount, the unrealized loss position is considered to be other-than-temporarily impaired. We evaluate the security's other-than-temporary impairment to determine the amount of credit loss to be recognized in earnings, which is limited to the amount of that security's unrealized loss.

In performing a detailed cash-flow analysis, we identify the best estimate of the cash flows expected to be collected. If this estimate results in a present value of expected cash flows (discounted at the security's effective yield) that is less than the amortized cost basis of a security (that is, a credit loss exists), other-than-temporary impairment is considered to have occurred. For determining the present value of variable-rate and hybrid private-label residential MBS, we use the effective interest rate derived from a variable-rate index, such as one-month London Interbank Offered Rate (LIBOR), plus the contractual spread, plus or minus a fixed-spread adjustment when there is an existing discount or premium on the security. As the implied forward curve of a selected variable-rate index changes over time, the effective interest rates derived from that index will also change over time and would therefore impact the present value of the subject security.

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Available-for-Sale Securities

As a result of these evaluations, we determined that none of our available-for-sale securities were other-than-temporarily impaired at September 30, 2012. At September 30, 2012, we held certain available-for-sale securities in an unrealized loss position. These unrealized losses reflect the impact of normal yield and spread fluctuations attendant with security markets. These losses are considered temporary as we expect to recover the entire amortized cost basis on these available-for-sale securities in an unrealized loss position and neither intend to sell these securities nor is it more likely than not that we will be required to sell these securities before the anticipated recovery of each security's remaining amortized cost basis. Additionally, there have been no shortfalls of principal or interest on any available-for-sale security. Regarding securities that were in an unrealized loss position as of September 30, 2012:

• Debentures issued by a supranational institution that were in an unrealized loss position as of September 30, 2012, are expected to return contractual principal and interest, based on our review and analysis of independent third-party credit reports on the supranational institution, and such supranational institution is rated triple-A (or equivalent) by each of the nationally recognized statistical rating organizations (NRSROs).

• Debentures issued by U.S. government corporations are not obligations of the U.S. government and not guaranteed by the U.S. government. However, these securities are rated at the same level as the U.S. government by the NRSROs. These ratings reflect the U.S. government's implicit support of the government corporation as well as the entity's underlying business and financial risk.

• We have concluded that the probability of default on debt issued by the Federal National Mortgage Association (Fannie Mae) and the Federal Home Loan Mortgage Corporation (Freddie Mac) is remote given their status as GSEs and their support from the U.S. government.

Held-to-Maturity Securities

HFA Securities. We have reviewed our investments in HFA securities and have determined that unrealized losses reflect the impact of normal market yield and spread fluctuations and illiquidity in the credit markets. We have determined that all unrealized losses are temporary given the creditworthiness of the issuers and the underlying collateral, including an assessment of past payment history (no shortfalls of principal or interest), property vacancy rates, debt service ratios, over-collateralization and other credit enhancement, and third-party bond insurance as applicable. As of September 30, 2012, none of our held-to-maturity investments in HFA securities were rated below investment grade by an NRSRO. Because the decline in market value is attributable to changes in interest rates and credit spreads and illiquidity in the credit markets and not to a significant deterioration in the fundamental credit quality of these obligations, and because we do not intend to sell the investments nor is it more likely than not that we will be required to sell the investments before recovery of the amortized cost basis, we do not consider these investments to be other-than-temporarily impaired at September 30, 2012.

Agency MBS. For MBS issued by Fannie Mae and Freddie Mac, which we sometimes refer to as agency MBS in this report, we determined that the strength of the issuers' guarantees through direct obligation or support from the U.S. government is sufficient to protect us from losses based on current expectations. Additionally, there have been no shortfalls of principal or interest on any such security. As a result, we have determined that, as of September 30, 2012, all of the gross unrealized losses on such MBS are temporary. We do not believe that the declines in market value of these securities are attributable to credit quality, and because we do not intend to sell the investments, nor is it more likely than not that we will be required to sell the investments before recovery of the amortized cost basis, we do not consider any of these investments to be other-than-temporarily impaired at September 30, 2012.

Private-Label Residential MBS and ABS Backed by Home Equity Loans. To ensure consistency in determination of the other-than-temporary impairment for private-label residential MBS and certain home equity loan investments (including home equity ABS) among all FHLBanks, the FHLBanks enhanced their overall other-than-temporary impairment process in 2009 by implementing a FHLBank Systemwide governance committee (the OTTI Governance Committee) and establishing a formal process to ensure consistency in key other-than-temporary impairment modeling assumptions used for purposes of their cash-flow analyses for the majority of these securities. We use the FHLBanks' common framework and approved assumptions for purposes of our other-than-temporary impairment cash-flow analyses of our private-label residential MBS and certain home equity loan investments. For certain private-label residential MBS and home equity loan investments where underlying collateral data is not available, we have used alternative procedures to assess these securities for other-than-temporary impairment. We are responsible for making our own determination of impairment and the reasonableness of assumptions, inputs, and methodologies used and for performing the required present value calculations using appropriate historical cost

16

bases and yields.

Our evaluation includes estimating the projected cash flows that we are likely to collect based on an assessment of all available information, including the structure of the applicable security and certain assumptions to determine whether we will recover the entire amortized cost basis of the security, such as:

• the remaining payment terms for the security;

• prepayment speeds;

• default rates;

• loss severity on the collateral supporting each security based on underlying loan-level borrower and loan characteristics;

• expected housing price changes; and

• interest-rate assumptions.

In accordance with related guidance from the Finance Agency, our primary regulator, we have contracted with the FHLBanks of San Francisco and Chicago to perform the cash-flow analysis underlying our other-than-temporary impairment decisions in certain instances. In the event that neither the FHLBank of San Francisco or the FHLBank of Chicago has the ability to model a particular MBS that we own, we project the expected cash flows for that security based on our expectations as to how the underlying collateral and impact on deal structure resultant from collateral cash flows are forecasted to occur over time. These assumptions are based on factors including, but not limited to loan-level data for each security and modeling variables expectations for securities similar in nature modeled by either the FHLBank of San Francisco or the FHLBank of Chicago. We form these expectations for those securities by reviewing, when available, loan-level data for each such security, and, when such loan-level data is not available for a security, by reviewing loan-level data for similar loan pools as a proxy for such data.

Specifically, we have contracted with the FHLBank of San Francisco to perform cash-flow analyses for our residential private-label MBS other than subprime private-label MBS, and with the FHLBank of Chicago to perform cash-flow analyses for our subprime private-label MBS. The following table provides additional data on who performs these cash-flow analyses for us (dollars in thousands).

	September 30, 2012
	Number of Securities	Par Value		Amortized Cost		Carrying Value		Fair Value
FHLBank of San Francisco	166	$	2,166,292	$	1,673,141	$	1,283,775	$	1,357,009
FHLBank of Chicago	16	22,728		22,095		21,014		18,319
Our own cash-flow projections	12	65,071		52,846		39,754		42,573

To assess whether the entire amortized cost basis of private-label residential MBS will be recovered, cash-flow analyses for each of our private-label residential MBS were performed. These analyses use two third-party models.

The first third-party model considers borrower characteristics and the particular attributes of the loans underlying our securities, in conjunction with assumptions about current home prices and future changes in home prices and interest rates, producing monthly projections of prepayments, defaults, and loss severities. A significant input to the first model is the forecast of future housing-price changes for the relevant states and core-based statistical areas (CBSAs), based on an assessment of the individual housing markets. The term CBSA refers collectively to metropolitan and micropolitan statistical areas as defined by the United States Office of Management and Budget. As currently defined, a CBSA must contain at least one core urban area with a population of 10,000 or more people, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties. Our housing-price forecast as of September 30, 2012, assumed current-to-trough home price declines ranging from 0.0 percent (for those housing markets that are believed to have reached their trough) to 4.0 percent. For those markets for which further home price declines are anticipated, such declines were projected to occur over the three- to nine-month period beginning July 1, 2012. For the vast majority of markets where further home price declines are anticipated, the declines were projected to range from 1.0 percent to 2.0 percent over the three-month period beginning July 1, 2012. From the trough, home prices were projected to recover using one of five different recovery paths that vary by housing market. Under those recovery paths, home prices were projected to increase as follows:

17

Months	Recovery Range of
1-6	0.0	%	to	2.8%
7-18	0.0	%	to	3.0%
19-24	1.0	%	to	4.0%
25-30	2.0	%	to	4.0%
31-42	2.0	%	to	5.0%
43-66	2.0	%	to	6.0%
Thereafter	2.3	%	to	5.6%

The month-by-month projections of future loan performance are derived from the first model to determine projected prepayments, defaults, and loss severities. These projections are then input into a second model that calculates the projected loan-level cash flows and then allocates those cash flows and losses among the various classes in the securitization structure in accordance with the cash-flow and loss-allocation rules prescribed by the securitization structure. In a securitization in which the credit enhancement for the senior securities is derived from the presence of subordinate securities, losses are generally allocated first to the subordinate securities until their principal balance is reduced to zero. The projected cash flows are based on a number of assumptions and expectations and the results of these models can vary significantly with changes in assumptions and expectations. The scenario of cash flows determined based on the model approach described above reflects a best estimate scenario and includes a base case current-to-trough housing price forecast and a base case housing price recovery path described in the prior paragraph.

We do not intend to sell these securities and believe it is not more likely than not that we will be required to sell these securities before the anticipated recovery of each security's remaining amortized cost basis. We recorded other-than-temporary impairment credit losses of $1.1 million for the three months ended September 30, 2012. For held-to-maturity securities, the noncredit portion of an other-than-temporary impairment charge that is recognized in other comprehensive income is accreted from accumulated other comprehensive loss to the carrying value of the security over the remaining life of the security in a prospective manner based on the amount and timing of estimated cash flows. This accretion continues until the security is sold or matures, or an additional other-than-temporary impairment charge is recorded in earnings, which could result in a reclassification adjustment and the establishment of a new amount to be accreted. For the three months ended September 30, 2012, we accreted $17.8 million of noncredit impairment from accumulated other comprehensive loss to the carrying value of held-to-maturity securities. For certain other-than-temporarily impaired securities that were previously impaired and have subsequently incurred additional credit losses during the three months ended September 30, 2012, the additional credit losses, up to the amount in accumulated other comprehensive loss, were reclassified out of noncredit-related losses in accumulated other comprehensive loss and charged to earnings. This amount was $1.0 million for the three months ended September 30, 2012.

For those securities for which an other-than-temporary impairment was determined to have occurred during the three months ended September 30, 2012 (that is, a determination was made that less than the entire amortized cost basis is expected to be recovered), the following table presents a summary of the average projected values over the remaining lives of the securities for the significant inputs used to measure the amount of the credit loss recognized in earnings, as well as related current credit enhancement. Credit enhancement is defined as the percentage of subordinated tranches, over-collateralization, and other credit enhancement, if any, in a security structure that will generally absorb losses before we will experience a loss on the security. The calculated averages represent the dollar-weighted averages of all the private-label residential MBS and home equity loan investments in each category shown (dollars in thousands). We note that we have instituted litigation in relation to certain of the private-label MBS in which we invested. Our complaint asserts, among others, claims for untrue or misleading statements in the sale of securities. It is possible that classifications of private-label MBS as provided herein when based on classification at the time of issuance (as per the following tables in this Note 6, for example) as disclosed by those securities' issuance documents, as well as other statements made by or on behalf of the issuers about the securities, are inaccurate.

18

			Significant Inputs
			Projected Prepayment Rates				Projected Default Rates				Projected Loss Severities				Current Credit Enhancement
Private-label MBS by Year of Securitization	Par Value		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent
Private-label residential MBS
Prime (1)
2004 and prior	$	1,411	6.3	%	6.3	%	30.0	%	30.0	%	47.7	%	47.7	%	19.1	%	19.1	%
Alt-A (1)
2007	$	11,310	2.8	%	2.8	%	74.8	%	74.8	%	50.8	%	50.8	%	36.4	%	36.4	%
2006	153,662		4.0		2.8 - 6.5		69.4		52.1 - 79.6		53.1		50.8 - 55.7		21.2		0.0 - 35.5
2005	34,117		5.7		5.7		54.3		54.3		55.3		55.3		—		—
Total Alt-A	$	199,089	4.3	%	2.8 - 6.5		67.1	%	52.1 - 79.6		53.4	%	50.8 - 55.7		18.4	%	0.0 - 36.4

_______________________

(1)Securities are classified in the table above based upon the current performance characteristics of the underlying loan pool and therefore the manner in which the loan pool backing the security has been modeled (as prime, Alt-A, or subprime), rather than their classification of the security at the time of issuance.

We own certain private-label MBS that are insured by third-party bond insurers (monoline insurers). Together with the other FHLBanks, we have performed analyses to assess the financial strength of these monoline insurers to establish an expected case regarding the time horizon of the bond insurers' ability to fulfill their financial obligations and provide credit support. The projected time horizon of credit protection provided by an insurer is a function of claims-paying resources and anticipated claims in the future. This assumption is referred to as the “burnout period” and is expressed in months. Of the five monoline insurers, the financial guarantee from Assured Guaranty Municipal Corp. is considered sufficient to cover all future claims and, therefore, the burnout analysis is not applicable as discussed above. Conversely, the burnout period for three monoline insurers, Syncora Guarantee Inc., Financial Guaranty Insurance Corp., and Ambac Assurance Corp., is not considered applicable due to regulatory intervention that has generally suspended all claims payments to effectively zero. One of these insurers, Ambac Assurance Corp., has recently received permission from a Wisconsin Circuit Court to start paying 25 percent of policy claims in cash that have arisen since Ambac ceased paying claims in March 2010 at the direction of the Wisconsin Commissioner of Insurance. While these cash payments commenced in the third quarter of 2012, uncertainty surrounding other aspects of the company's rehabilitation plan is currently preventing us from including these payments in our cash flow modeling. For the remaining monoline insurer, MBIA Insurance Corp., the burnout period as of September 30, 2012, is three months, ending December 31, 2012. None of our securities that are guaranteed by MBIA Insurance Corp. were determined to have an other-than-temporary impairment credit loss at September 30, 2012.

The following table sets forth our securities for which other-than-temporary impairment credit losses were recognized in the three months ending September 30, 2012 (dollars in thousands). Securities are classified in the table below based on their classifications at the time of issuance.

	September 30, 2012
Other-Than-Temporarily Impaired Investment	Par Value		Amortized Cost		Carrying Value		Fair Value
Private-label residential MBS – Prime	$	1,411	$	1,411	$	1,040	$	1,040
Private-label residential MBS – Alt-A	199,089		145,328		103,488		114,646
Total other-than-temporarily impaired securities	$	200,500	$	146,739	$	104,528	$	115,686

The following table sets forth our securities for which other-than-temporary impairment credit losses were recognized during the life of the security through September 30, 2012 (dollars in thousands). Securities are classified in the table below based on their classifications at the time of issuance.

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	September 30, 2012
Other-Than-Temporarily Impaired Investment	Par Value		Amortized Cost		Carrying Value		Fair Value
Private-label residential MBS – Prime	$	73,848	$	63,484	$	47,198	$	55,612
Private-label residential MBS – Alt-A	1,814,813		1,320,029		933,949		1,045,635
ABS backed by home equity loans – Subprime	5,685		5,040		3,867		4,376
Total other-than-temporarily impaired securities	$	1,894,346	$	1,388,553	$	985,014	$	1,105,623

The following table sets forth other-than-temporary impairment credit losses that were recognized for the three and nine months endedSeptember 30, 2012, by investment classification (dollars in thousands). Securities are classified in the table below based on the classification at the time of issuance.

	For the Three Months Ended September 30, 2012								For the Nine Months Ended September 30, 2012
Other-Than-Temporarily Impaired Investment	Total Other-Than-Temporary Impairment Losses on Investment Securities			Net Amount of Impairment Losses Reclassified to Accumulated Other Comprehensive Loss		Net Other-Than-Temporary Impairment Losses on Investment Securities, Credit Portion			Total Other-Than-Temporary Impairment Losses on Investment Securities			Net Amount of Impairment Losses Reclassified to (from) Accumulated Other Comprehensive Loss			Net Other-Than-Temporary Impairment Losses on Investment Securities, Credit Portion
Private-label residential MBS – Prime	$	(371	)	$	371	$	—		$	(371	)	$	371		$	—
Private-label residential MBS – Alt-A	(1,706		)	614		(1,092		)	(13,847		)	8,306			(5,541		)
ABS backed by home equity loans – Subprime	—			—		—			—			(3		)	(3		)
Total other-than-temporarily impaired securities	$	(2,077	)	$	985	$	(1,092	)	$	(14,218	)	$	8,674		$	(5,544	)

The following table presents a roll-forward of the amounts related to credit losses recognized into earnings. The roll-forward is the amount of credit losses on investment securities on which we recognized a portion of other-than-temporary impairment charges into accumulated other comprehensive loss (dollars in thousands).

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Balance at beginning of period	$	520,654		$	562,358		$	544,833		$	523,881
Additions:
Credit losses for which other-than-temporary impairment was not previously recognized	—			—			—			46
Additional credit losses for which an other-than-temporary impairment charge was previously recognized(1)	1,092			7,210			5,544			73,542
Reductions:
Securities matured during the period	(8,065		)	(15,889		)	(32,697		)	(42,089		)
Increase in cash flows expected to be collected which are recognized over the remaining life of the security	(2,609		)	(731		)	(6,608		)	(2,432		)
Balance at end of period	$	511,072		$	552,948		$	511,072		$	552,948

_______________________

(1) For the three months ended September 30, 2012, and 2011, additional credit losses for which an other-than-temporary impairment charge was previously recognized relate to all securities that were also previously impaired prior to July 1, 2012 and 2011. For the nine months endedSeptember 30, 2012 and 2011, additional credit losses for which an other-than-temporary impairment charge was previously recognized relate to all securities that were also previously impaired prior to January 1, 2012 and 2011.

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The following table presents a roll-forward of the amounts related to the net noncredit portion of other-than-temporary impairment losses on held-to-maturity securities included in accumulated other comprehensive loss (dollars in thousands).

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Balance at beginning of period	$	(420,392	)	$	(488,887	)	$	(450,996	)	$	(621,528	)
Amounts reclassified (to) from accumulated other comprehensive loss:
Noncredit portion of other-than-temporary impairment losses on held-to-maturity securities	(2,013		)	(5,231		)	(10,931		)	(16,910		)
Reclassification adjustment of noncredit component of impairment losses included in net income relating to held-to-maturity securities	1,028			4,105			2,257			58,516
Net amount of impairment losses reclassified (to) from accumulated other comprehensive loss	(985		)	(1,126		)	(8,674		)	41,606
Accretion of noncredit portion of impairment losses on held-to-maturity securities	17,838			35,288			56,131			125,197
Balance at end of period	$	(403,539	)	$	(454,725	)	$	(403,539	)	$	(454,725	)

Note 7 — Advances

General Terms. At September 30, 2012 and December 31, 2011, we had advances outstanding with interest rates ranging from (0.03) percent to 8.37 percent and 0.00 percent to 8.37 percent, respectively, as summarized below (dollars in thousands). Advances with negative interest rates contain embedded interest rate features that have met the requirements to be separated from the host contract and are recorded as stand-alone derivatives, and which we economically hedge with derivatives containing offsetting interest rate features.  

	September 30, 2012					December 31, 2011
Year of Contractual Maturity	Amount			Weighted Average Rate		Amount			Weighted Average Rate
Overdrawn demand-deposit accounts	$	13,013		0.54	%	$	7,683		0.45	%
Due in one year or less	11,087,724			0.88		8,266,384			1.15
Due after one year through two years	2,209,838			2.75		5,563,728			1.98
Due after two years through three years	2,341,603			2.71		2,721,354			2.88
Due after three years through four years	2,003,841			2.72		1,997,587			2.96
Due after four years through five years	3,094,195			3.01		2,151,231			2.90
Thereafter	2,594,097			3.23		3,873,205			3.71
Total par value	23,344,311			1.94	%	24,581,172			2.23	%
Premiums	50,035					37,378
Discounts	(22,965		)			(23,748		)
Market value of embedded derivatives (1)	1,008					—
Hedging adjustments	543,298					600,096
Total	$	23,915,687				$	25,194,898

_________________________

(1) At September 30, 2012, the Bank had certain advances with embedded features that met the requirements to be separated from the host contract and designate the embedded features as a stand-alone derivative.

We offer putable advances that provide us with the right to put the fixed-rate advance to the borrower (and thereby extinguish the advance) on predetermined exercise dates (put dates), and offer, subject to certain conditions, replacement funding at then-current advances rates. Generally, we would exercise the put options when interest rates increase. At September 30, 2012, and December 31, 2011, we had putable advances outstanding totaling $3.6 billion and $4.7 billion, respectively.

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The following table sets forth our advances outstanding by the year of contractual maturity or next put date for putable advances (dollars in thousands):

	September 30, 2012				December 31, 2011
Year of Contractual Maturity or Next Put Date	Par Value		Percentage of Total		Par Value		Percentage of Total
Overdrawn demand-deposit accounts	$	13,013	0.1	%	$	7,683	0.0	%
Due in one year or less	14,311,649		61.3		12,244,459		49.8
Due after one year through two years	1,848,588		7.9		4,975,328		20.2
Due after two years through three years	2,065,353		8.8		2,231,354		9.1
Due after three years through four years	1,707,941		7.3		1,797,337		7.3
Due after four years through five years	1,541,670		6.6		1,713,831		7.0
Thereafter	1,856,097		8.0		1,611,180		6.6
Total par value	$	23,344,311	100.0	%	$	24,581,172	100.0	%

We also offer callable advances that provide borrowers with the right to call, on predetermined option exercise dates, the advance prior to maturity without incurring prepayment or termination fees (callable advances). In exchange for receiving the right to call the advance on a predetermined call schedule, the borrower pays a higher fixed rate for the advance relative to an equivalent maturity, noncallable, fixed-rate advance. If the call option is exercised, replacement funding may be available. Other advances may only be prepaid by paying a fee (a prepayment fee) that makes us financially indifferent to the prepayment of the advance. At September 30, 2012, and December 31, 2011, we had callable advances outstanding totaling $32.5 million and $2.5 million, respectively.

Interest-Rate-Payment Terms. The following table details interest-rate-payment types for our outstanding advances (dollars in thousands):

Par value of advances	September 30, 2012		December 31, 2011
Fixed-rate	$	19,272,798	$	20,096,489
Variable-rate	4,071,513		4,484,683
Total par value	$	23,344,311	$	24,581,172

At September 30, 2012, 32.8 percent of our fixed-rate advances were swapped to a floating rate and 3.7 percent of our variable-rate advances were swapped to a different variable-rate index. At December 31, 2011, 39.0 percent of our fixed-rate advances were swapped to a floating rate and 0.5 percent of our variable-rate advances were swapped to a different variable-rate index.

Credit Risk Exposure and Security Terms.

Our potential credit risk from advances is principally concentrated in commercial banks, insurance companies, savings institutions, and credit unions. At September 30, 2012, and December 31, 2011, we had $5.0 billion and $7.4 billion, respectively, of advances issued to members with at least $1.0 billion of advances outstanding. These advances were made to two borrowers at September 30, 2012, and three borrowers at December 31, 2011, representing 21.3 percent and 30.0 percent, respectively, of total par value of outstanding advances.

We lend to our members and certain nonmember institutions that are eligible to borrow from us (referred to as housing associates) chartered within the six New England states in accordance with federal statutes, including the Federal Home Loan Bank Act of 1932, as amended (the FHLBank Act). The FHLBank Act generally requires us to hold, or have access to, collateral to secure our advances. We maintain policies and procedures that are intended to manage credit risk including, without limitation, requirements for physical possession or control of pledged collateral, restrictions on borrowing, specific review of each advance request, verifications of collateral, and continuous monitoring of borrowings and the borrower's financial condition. Based on the collateral pledged as security for advances, management's credit analysis of the borrower's financial condition, and credit extension and collateral policies, we do not expect any losses on advances and expect to collect all amounts due according to the contractual terms of the advances. Therefore, we have not provided any allowance for losses on advances. For information related to our credit risk on advances and allowance for credit losses, see Note 9 — Allowance for Credit Losses.

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Prepayment Fees. We record prepayment fees received from borrowers on prepaid advances net of any associated basis adjustments related to hedging activities on those advances and net of deferred prepayment fees on advance prepayments considered to be loan modifications. Additionally, under certain advances products the prepayment-fee provisions of the advance agreement could result in either a payment from the borrower or to the borrower when such an advance is prepaid, based upon market conditions at the time of prepayment (referred to as a symmetrical prepayment fee). Advances with a symmetrical prepayment fee provision are hedged with derivatives containing offsetting terms, so that we are financially indifferent to the borrower's decision to prepay such advances. The net amount of prepayment fees is reflected as interest income in the statement of operations.

For the three and nine months ended September 30, 2012 and 2011, net advance prepayment fees recognized in income are reflected in the following table (dollars in thousands):

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Prepayment fees received from borrowers	$	23,247		$	49,976		$	91,471		$	68,641
Less: hedging fair-value adjustments on prepaid advances	(11,125		)	(45,848		)	(50,270		)	(52,822		)
Less: net premiums associated with prepaid advances	(1,433		)	(1,218		)	(1,770		)	(1,781		)
Less: deferred recognition of prepayment fees received from borrowers on advance prepayments deemed to be loan modifications	(2,893		)	(1,084		)	(4,580		)	(2,461		)
Prepayment fees recognized in income on advance restructurings deemed to be extinguishments	4,078			7,240			9,497			8,816
Net prepayment fees recognized in income	$	11,874		$	9,066		$	44,348		$	20,393

Note 8 — Mortgage Loans Held for Portfolio

We invest in mortgage loans through the Mortgage Partnership Finance® (MPF®) program. These investments are either guaranteed or insured by federal agencies (government mortgage loans) or are credit-enhanced by the related participating financial institution (conventional mortgage loans). All such investments are held for portfolio. The mortgage loans are typically originated, credit-enhanced, and serviced by the related participating financial institution. The majority of these loans are serviced by the originating institution. However, a portion of these loans are sold servicing-released by the participating financial institution and serviced by a third-party servicer.

The following table presents certain characteristics of the mortgage loans in which we have invested (dollars in thousands):

	September 30, 2012			December 31, 2011
Real estate
Fixed-rate 15-year single-family mortgages	$	681,720		$	646,539
Fixed-rate 20- and 30-year single-family mortgages	2,700,404			2,439,475
Premiums	55,931			35,420
Discounts	(4,415		)	(5,708		)
Deferred derivative gains and losses, net	3,408			1,297
Total mortgage loans held for portfolio	3,437,048			3,117,023
Less: allowance for credit losses	(5,514		)	(7,800		)
Total mortgage loans, net of allowance for credit losses	$	3,431,534		$	3,109,223

The following table details the par value of mortgage loans held for portfolio (dollars in thousands):

	September 30, 2012		December 31, 2011
Conventional mortgage loans	$	2,982,391	$	2,777,100
Government mortgage loans	399,733		308,914
Total par value	$	3,382,124	$	3,086,014

"Mortgage Partnership Finance," and "MPF," are registered trademarks of the FHLBank of Chicago.

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See Note 9 — Allowance for Credit Losses for information related to our credit risk from our investments in mortgage loans and allowance for credit losses based on these investments.

Note 9 — Allowance for Credit Losses

We have developed and documented a systematic methodology for determining an allowance for credit losses for our:

• extensions of credit, such as our advances and letters of credit;

• investments in government mortgage loans held for portfolio;

• investments in conventional mortgage loans held for portfolio;

• investments via term securities purchased under agreements to resell; and

• investments via term federal funds sold.

An allowance for credit losses is a valuation allowance separately established for each identified portfolio segment, if necessary, to provide for probable losses inherent in our portfolio as of the statement of condition date. To the extent necessary, an allowance for credit losses for off-balance-sheet credit exposure is recorded as a liability.

Portfolio Segments. We have established an allowance methodology for each of our portfolio segments. A portfolio segment is defined as the level at which an entity develops and documents a systematic method for determining its allowance for credit losses.

Classes of Financing Receivables. Classes of financing receivables generally are a disaggregation of a portfolio segment to the extent that is needed to understand the exposure to credit risk arising from these financing receivables. We determined that no further disaggregation of portfolio segments identified above is needed as we assessed and measured the credit risk arising from these financing receivables at the portfolio segment level.

Credit Products

We manage our credit exposure to credit products through an integrated approach that generally provides for a credit limit to be established for each borrower, includes an ongoing review of each borrower's financial condition, and is coupled with collateral and lending policies that are intended to limit risk of loss while balancing borrowers' needs for a reliable source of funding. In addition, we lend in accordance with the FHLBank Act, Finance Agency regulations, and other applicable laws. The FHLBank Act requires us to obtain sufficient collateral to secure our credit products. The estimated value of the collateral pledged to secure each borrower's credit products is calculated by applying collateral discounts, or haircuts, to the value of the collateral. We accept certain investment securities, residential mortgage loans, deposits, and other assets as collateral. We require all borrowers that pledge securities collateral to place physical possession of such securities collateral with our safekeeping agent or the borrower's securities corporation, subject to a control agreement giving us appropriate control over such collateral. In addition, community financial institutions are eligible to use expanded statutory collateral provisions for small-business and agriculture loans. Members also pledge their Bank capital stock as collateral. Collateral arrangements may vary depending upon borrower credit quality, financial condition, performance, borrowing capacity, and overall credit exposure to the borrower. We can call for additional or substitute collateral to further safeguard our security interest. We believe our policies appropriately manage our credit risks arising from our credit products.

Depending on the financial condition of the borrower, we may allow the borrower to retain possession of loan collateral pledged to us while agreeing to hold such collateral for our benefit or require the borrower to specifically assign or place physical possession of such loan collateral with us or a third-party custodian that we approve.

We are provided an additional safeguard for our security interests by Section 10(e) of the FHLBank Act, which generally affords any security interest granted by a borrower to the Bank priority over the claims and rights of any other party. The exceptions to this prioritization are limited to claims that would be entitled to priority under otherwise applicable law and are held by bona fide purchasers for value or by secured parties with higher priority perfected security interests. However, the priority granted to our security interests under Section 10(e) of the FHLBank Act may not apply when lending to insurance company members. This is due to the anti-preemption provision contained in the McCarran-Ferguson Act, which provides that federal law does not preempt state insurance law unless the federal law expressly regulates the business of insurance. Thus, if state law conflicts with Section 10(e) of the FHLBank Act, the protection afforded by this provision may not be available to us. However, we perfect our security interests in the collateral pledged by our members, including insurance company members, by filing UCC-1 financing statements, taking possession or control of such collateral, or taking other appropriate steps.

Using a risk-based approach and taking into consideration each borrower's financial strength, we consider the types and level of collateral to be the primary indicator of credit quality on our credit products. At September 30, 2012, and December 31, 2011, we had rights to collateral, on a borrower-by-borrower basis, with an estimated value in excess of our outstanding extensions of

24

credit. The estimated value of the collateral required to secure each borrower's obligations is calculated by applying collateral discounts or haircuts.

We continue to evaluate and make changes to our collateral guidelines based on market conditions. At September 30, 2012, and December 31, 2011, we did not have any credit products that were past due, on nonaccrual status, or considered impaired. In addition, there were no troubled debt restructurings related to credit products during the nine months endedSeptember 30, 2012, and September 30, 2011.

Based upon the collateral held as security, our credit extension and collateral policies, management's credit analysis, and the repayment history on credit products, we have not recorded any allowance for credit losses on credit products at September 30, 2012, and December 31, 2011. At September 30, 2012, and December 31, 2011, no liability to reflect an allowance for credit losses for off-balance-sheet credit exposures was recorded. See Note 18 — Commitments and Contingencies for additional information on our off-balance-sheet credit exposure.

Government MortgageLoans Held for Portfolio

We invest in government mortgage loans secured by one- to four-family residential properties. Government mortgage loans are mortgage loans insured or guaranteed by the Federal Housing Administration, the Department of Veterans Affairs, the Rural Housing Service of the Department of Agriculture, or by the U.S. Department of Housing and Urban Development.

The servicer provides and maintains insurance or a guarantee from the applicable government agency. The servicer is responsible for compliance with all government agency requirements and for obtaining the benefit of the applicable insurance or guaranty with respect to defaulted government-guaranteed mortgage loans. Any losses incurred on such loans that are not recovered from the insurer or guarantor are absorbed by the related servicer. Therefore, we only have credit risk for these loans if the servicer fails to pay for losses not covered by insurance or guarantees. Based on our assessment of our servicers for these loans, there is no allowance for credit losses for the government mortgage loan portfolio as of September 30, 2012, and December 31, 2011. In addition, these mortgage loans are not placed on nonaccrual status due to the government guarantee or insurance on these loans and the contractual obligation of the loan servicers to repurchase their related loans when certain criteria are met.

Conventional Mortgage Loans Held for Portfolio

We use a model to determine our allowance for credit losses based on our investments in conventional mortgage loans. We periodically adjust the key inputs to this model in an effort intended to properly align our loss projections with the market conditions that are relevant to these loans. The key inputs to the model include past and current performance of these loans (including portfolio delinquency and default migration statistics), overall loan portfolio performance characteristics (including loss-mitigation features, especially credit enhancements, as discussed below under — Credit Enhancements), and loss-severity estimates for these loans. We update the following inputs at least once per quarter: current outstanding loan amounts, delinquency statistics of the portfolio, and related loss-mitigation features (including credit-enhancement and estimated credit-enhancement fee-recovery amounts) for all master commitments. A master commitment is a document which provides the general terms under which the participating financial institution will deliver mortgage loans, including a maximum loan delivery amount, maximum credit enhancement, if applicable, and expiration date. Additionally, we review the model's default migration factor on a quarterly basis to determine if the portfolio has exhibited any change in loans migrating from current to delinquent or from delinquent to default and make adjustments as appropriate.

We use a third-party loan-loss projection model to determine our loss-severity estimates for our master commitments. We update our loss-severity estimates periodically as we determine appropriate, but not less than once per year. The inputs to this model include loan-related characteristics (such as property types and locations), industry data (such as foreclosure timelines and associated costs), and current and projected housing prices.

Nonaccrual Loans. We place conventional mortgage loans on nonaccrual status when the collection of the contractual principal or interest is 90 days or more past due. When a conventional mortgage loan is placed on nonaccrual status, accrued but uncollected interest is reversed against interest income in the current period. We generally record cash payments received on nonaccrual loans first as interest income and then as a reduction of principal as specified in the contractual agreement, unless the collection of the remaining principal amount due is considered doubtful. If the collection of the remaining principal amount due is considered doubtful, cash payments received would be applied first solely to principal until the remaining principal amount due is expected to be collected and then as a recovery of any charge-off, if applicable, followed by recording interest income. A loan on nonaccrual status may be restored to accrual status when the collection of the contractual principal and interest is less than 90 days past due.

25

Impairment Methodology. A loan is considered impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due according to the contractual terms of the loan agreement.

Loans that are on nonaccrual status and that are considered collateral-dependent are measured for impairment based on the fair value of the underlying property less estimated selling costs. Loans are considered collateral-dependent if repayment is expected to be provided solely by the sale of the underlying property, that is, there is no other available and reliable source of repayment. Collateral-dependent loans are impaired if the fair value of the underlying collateral less estimated selling costs is insufficient to recover the unpaid principal balance on the loan. Interest income on impaired loans is recognized in the same manner as nonaccrual loans as discussed above.

Charge-Off Policy. We evaluate whether to record a charge-off on a conventional mortgage loan upon the occurrence of a confirming event. Confirming events include, but are not limited to, the occurrence of foreclosure or notification of a claim against any of the credit enhancements. A charge-off is recorded if we determine that the recorded investment in the loan is not likely to be recovered.

Collectively Evaluated Mortgage Loans. We evaluate the credit risk of our investments in conventional mortgage loans for impairment on a collective basis that considers loan-pool-specific attribute data at the master commitment pool level, applies estimated loss severities, and incorporates available credit enhancements to establish our best estimate of probable incurred losses. Migration analysis is a methodology for estimating the rate of default experienced on pools of similar loans based on our historical experience. We apply migration analysis to conventional loans that are currently not past due, loans that are 30 to 59 days past due, 60 to 89 days past due, and 90 or more days past due. We then estimate the dollar amount of loans in these categories that we believe are likely to migrate to a realized loss position and apply a loss severity factor to estimate losses that would be incurred at the statement of condition date. Additionally, for our investments in loans modified under our temporary loan modification plan, on the effective date of a loan modification we measure the present value of expected future cash flows discounted at the loan's effective interest rate and reduce the carrying value of the loan accordingly. See — Troubled Debt Restructurings below for information on our temporary loan modification program.

Estimating a Margin of Imprecision. We also assess a factor for the margin for imprecision to the estimation of credit losses for the homogeneous population. The margin for imprecision is a factor in the allowance for credit losses that recognizes the imprecise nature of the measurement process and is included as part of the mortgage loan allowance for credit loss. This amount represents a subjective management judgment based on facts and circumstances that exist as of the reporting date that is unallocated to any specific measurable economic or credit event and is intended to cover other inherent losses that may not be captured in our methodology. The actual loss that may occur on homogeneous populations of mortgage loans may differ from the estimated loss.

Roll-Forward of Allowance for Credit Losses on Mortgage Loans. The following table presents a roll-forward of the allowance for credit losses on conventional mortgage loans for the three and nine months endedSeptember 30, 2012, and 2011, as well as the recorded investment in mortgage loans by impairment methodology at September 30, 2012, and September 30, 2011 (dollars in thousands). The recorded investment in a loan is the par amount of the loan, adjusted for accrued interest, unamortized premiums or discounts, deferred derivative gains and losses, and direct write-downs. The recorded investment is net of any valuation allowance.

	For the Three Months Ended September 30,					For the Nine Months Ended September 30,
	2012			2011		2012			2011
Allowance for credit losses
Balance at beginning of period	$	6,114		$	7,181	$	7,800		$	8,653
Charge-offs	(77		)	—		(229		)	(14		)
Reduction of provision for credit losses	(523		)	—		(2,057		)	(1,458		)
Balance at end of period	$	5,514		$	7,181	$	5,514		$	7,181
Ending balance, individually evaluated for impairment	$	—		$	—	$	—		$	—
Ending balance, collectively evaluated for impairment	$	5,514		$	7,181	$	5,514		$	7,181
Recorded investment, end of period (1)
Individually evaluated for impairment	$	—		$	—	$	—		$	—
Collectively evaluated for impairment	$	3,043,457		$	2,832,696	$	3,043,457		$	2,832,696

_________________________

(1) This amount excludes government mortgage loans because we make no allowance for credit losses based on our

26

investments in government mortgage loans, as discussed above under — Government Mortgage Loans Held for Portfolio.

Credit Quality Indicators. Key credit quality indicators for mortgage loans include the migration of past due loans, nonaccrual loans, loans in process of foreclosure and impaired loans. The tables below set forth certain key credit quality indicators for our investments in mortgage loans at September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012
	Recorded Investment in Conventional Mortgage Loans			Recorded Investment in Government Mortgage Loans			Total
Past due 30-59 days delinquent	$	38,867		$	15,481		$	54,348
Past due 60-89 days delinquent	12,907			3,746			16,653
Past due 90 days or more delinquent	51,240			24,754			75,994
Total past due	103,014			43,981			146,995
Total current loans	2,940,443			367,540			3,307,983
Total mortgage loans	$	3,043,457		$	411,521		$	3,454,978
Other delinquency statistics
In process of foreclosure, included above (1)	$	22,784		$	11,326		$	34,110
Serious delinquency rate (2)	1.70		%	6.02		%	2.21		%
Past due 90 days or more still accruing interest	$	—		$	24,754		$	24,754
Loans on nonaccrual status (3)	$	51,240		$	—		$	51,240

_______________________

(1) Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu of foreclosure has been reported.

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

(3) Includes conventional mortgage loans with contractual principal or interest payments 90 days or more past due and not accruing interest.

	December 31, 2011
	Recorded Investment in Conventional Mortgage Loans			Recorded Investment in Government Mortgage Loans			Total
Past due 30-59 days delinquent	$	41,311		$	15,477		$	56,788
Past due 60-89 days delinquent	11,656			5,973			17,629
Past due 90 days or more delinquent	55,876			24,925			80,801
Total past due	108,843			46,375			155,218
Total current loans	2,710,526			269,101			2,979,627
Total mortgage loans	$	2,819,369		$	315,476		$	3,134,845
Other delinquency statistics
In process of foreclosure, included above (1)	$	32,344		$	7,413		$	39,757
Serious delinquency rate (2)	1.99		%	7.90		%	2.59		%
Past due 90 days or more still accruing interest	$	—		$	24,925		$	24,925
Loans on nonaccrual status (3)	$	55,876		$	—		$	55,876

_______________________

(1) Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu of foreclosure has been reported.

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

(3) Includes conventional mortgage loans with contractual principal or interest payments 90 days or more past due and not accruing interest.

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Credit Enhancements. Our allowance for credit losses factors in the credit enhancements associated with conventional mortgage loans under the MPF program. These credit enhancements apply after the homeowner's equity is exhausted and can include primary and/or supplemental mortgage insurance or other kinds of credit enhancement. Any incurred losses that would be recovered from the credit enhancements are not reserved as part of our allowance for loan losses. In such cases, a receivable is generally established to reflect the expected recovery from credit-enhancement arrangements.

The conventional mortgage loans are required to be credit enhanced so that the risk of loss is limited to the losses equivalent to an investor in a double-A rated MBS at the time of purchase. We share the risk of credit losses on our investments in mortgage loans with the related participating financial institution by structuring potential losses on these investments into layers with respect to each master commitment. We analyze the risk characteristics of our mortgage loans using a model from an NRSRO to determine the amount of credit enhancement. This credit-enhancement amount is broken into a first-loss account and a credit-enhancement obligation of a participating financial institution, which is calculated based on the risk analysis to equal the difference between the amounts needed for the master commitment to have a rating equivalent to a double-A rated MBS and our initial first-loss account exposure.

The first-loss account represents the first layer or portion of credit losses which we incur with respect to our investments in mortgage loans after considering the borrower's equity and primary mortgage insurance. The participating financial institution is required to cover the next layer of losses up to an agreed-upon credit-enhancement obligation amount, which may consist of a direct liability of the participating financial institution to pay credit losses up to a specified amount, a contractual obligation of a participating financial institution to provide supplemental mortgage insurance, or a combination of both. We absorb any remaining unallocated losses.

The aggregate amount of the first-loss account is documented and tracked but is neither recorded nor reported as an allowance for loan losses in our financial statements. As credit and special hazard losses are realized that are not covered by the liquidation value of the real property or primary mortgage insurance, they are first charged to us, with a corresponding reduction of the first-loss account for that master commitment up to the amount in the first-loss account at that time. Over time, the first-loss account may cover the expected credit losses on a master commitment, although losses that are greater than expected or that occur early in the life of a master commitment could exceed the amount in the first-loss account. In that case, the excess losses would be charged to the participating financial institution's credit-enhancement amount, then to us after the participating financial institution's credit-enhancement amount has been exhausted.

For loans in which we buy or sell participations from or to other FHLBanks that participate in the MPF program (MPF Banks), the amount of the first-loss account remaining to absorb losses for loans that we own is partly dependent on the percentage of our participation in such loans. Assuming losses occur on a proportional basis between loans that we own and loans owned by other MPF Banks, at September 30, 2012, and December 31, 2011, the amount of first-loss account remaining for losses attributable to us was $20.8 million and $23.8 million, respectively.

Participating financial institutions are paid a credit-enhancement fee for assuming credit risk and in some instances all or a

portion of the credit-enhancement fee may be performance-based. For certain MPF products, our losses incurred under the first-loss account can be mitigated by withholding future performance credit-enhancement fees that would otherwise be payable to the participating financial institutions. We record credit-enhancement fees paid to participating financial institutions as a reduction to mortgage-loan-interest income. We incurred credit-enhancement fees of $782,000 and $762,000 for the three months ended September 30, 2012, and 2011, respectively. For both the nine months endedSeptember 30, 2012, and 2011, we incurred credit-enhancement fees of $2.3 million .

Withheld credit-enhancement fees can mitigate losses from our investments in mortgage loans and therefore we consider our expectations by each master commitment for such withheld fees in determining the allowance for loan losses. More specifically, we determine the amount of credit-enhancement fees available to mitigate losses as follows: accrued credit-enhancement fees to be paid to participating financial institutions; plus projected credit-enhancement fees to be paid to the participating financial institutions over the next 12 months; minus any losses incurred or expected to be incurred. Available credit-enhancement fees cannot be shared between master commitments and, as a result, some master commitments may have sufficient credit-enhancement fees to recover all losses while other master commitments may not.

The following table demonstrates the impact on our estimate of the allowance for credit losses resulting from the loss-mitigating features of conventional mortgage loans (dollars in thousands).

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	September 30, 2012			December 31, 2011
Total estimated losses	$	10,077		$	10,274
Less: estimated losses in excess of the first-loss account, to be absorbed by participating financial institutions	(3,879		)	(1,622		)
Less: estimated performance-based credit-enhancement fees available for recapture	(684		)	(852		)
Net allowance for credit losses	$	5,514		$	7,800

Troubled Debt Restructurings. A troubled debt restructuring is considered to have occurred when a concession is granted to a borrower for economic or legal reasons related to the borrower's financial difficulties and that concession would not have been considered otherwise.

Our program under MPF for mortgage loan troubled debt restructurings primarily involves modifying the borrower's monthly payment for a period of up to 36 months to achieve a housing expense ratio of no more than 31 percent of their qualifying monthly income. The outstanding principal balance is first re-amortized to reflect a principal and interest payment for a term not to exceed 40 years. This would result in a balloon payment at the original maturity date of the loan as the maturity date and number of remaining monthly payments are not adjusted. If the 31 percent housing expense ratio is not achieved through re-amortization, the interest rate is reduced for the temporary modification period of up to 36 months in 0.125 percent increments below the original note rate, to a floor rate of 3.00 percent, resulting in reduced principal and interest payments, until the desired 31 percent housing expense ratio is met.

During the three months ended September 30, 2012, we had four troubled debt restructurings. The recorded investment in the troubled debt restructurings pre-modification and post-modification was $734,000 and $715,000, respectively as of the modification date. During the nine months endedSeptember 30, 2012, we had ten troubled debt restructurings. The recorded investment in the troubled debt restructurings for the pre-modification and post-modification was $2.0 million and $1.9 million as of the modification date.

As of September 30, 2012, and December 31, 2011, we had mortgage loans with a recorded investment of $2.3 million and $446,000, respectively that are considered a troubled debt restructuring. As of September 30, 2012, and 2011, our troubled debt restructurings were performing and have not re-defaulted.

REO. At each of September 30, 2012, and December 31, 2011, we had $7.9 million and $6.3 million, respectively in assets classified as REO. During the nine months endedSeptember 30, 2012, and 2011, we sold REO assets with a recorded carrying value of $8.2 million and $7.5 million, respectively. Upon the sale of these properties, and inclusive of any proceeds received from primary mortgage-insurance coverage, we recognized net gains totaling $308,000 and $400,000 on the sale of REO assets during the nine months endedSeptember 30, 2012, and 2011 respectively. Gains and losses on the sale of REO assets are recorded in other income.

Federal Funds Sold and Securities Purchased Under Agreements to Resell.

These investments are all short-term (less than three months). We invest in federal funds sold with investment-grade counterparties and we only evaluate these investments for purposes of an allowance for credit losses if the investment is not paid when due. All investments in federal funds sold as of September 30, 2012, and December 31, 2011, were repaid according to their contractual terms.

Securities purchased under agreements to resell are considered collateralized financing arrangements and effectively represent short-term loans to investment-grade counterparties. The terms of these loans are structured such that if the market value of the underlying securities decreases below the market value required as collateral, the counterparty must provide additional securities as collateral in an amount equal to the decrease or remit cash in such amount, or we will decrease the dollar value of the resale agreement accordingly. If we determine that an agreement to resell is impaired, the difference between the fair value of the collateral and the amortized cost of the agreement is charged to earnings. Based upon the collateral held as security, we determined that no allowance for credit losses was needed for the securities purchased under agreements to resell at September 30, 2012, and December 31, 2011.

Note 10 — Derivatives and Hedging Activities

All derivatives are recognized on the statement of condition at fair value. We offset fair-value amounts recognized for derivative instruments and fair-value amounts recognized for the right to reclaim cash collateral (a receivable) or the obligation to return cash collateral (a payable) arising from derivative instruments recognized at fair value executed with the same counterparty under a master-netting arrangement. Derivative assets and derivative liabilities reported on the statement of

29

condition also include net accrued interest. Cash flows associated with derivatives are reflected as cash flows from operating activities in the statement of cash flows unless the derivative meets the criteria to be a financing derivative.

Each derivative is designated as one of the following:

• a qualifying hedge of the change in fair value of a recognized asset or liability or an unrecognized firm commitment (a fair value hedge);

• a qualifying hedge of a forecasted transaction or the variability of cash flows that are to be received or paid in connection with a recognized asset or liability (a cash-flow hedge); or

• a nonqualifying hedge of an asset or liability (an economic hedge) for asset-liability-management purposes.

Accounting for Fair-Value or Cash-Flow Hedges. If hedging relationships meet certain criteria, including, but not limited to, formal documentation of the hedging relationship and an expectation to be highly effective, they qualify for fair-value or cash-flow hedge accounting and the offsetting changes in fair value of the hedged items are recorded either in earnings in the case of fair-value hedges or accumulated other comprehensive loss in the case of cash-flow hedges. Our approaches to hedge accounting are:

• long-haul hedge accounting, which generally requires us to formally assess (both at the hedge's inception and at least quarterly) whether the derivatives that are used in hedging transactions have been effective in offsetting changes in the fair value or cash flows of hedged items or forecasted transactions and whether those derivatives may be expected to remain effective in future periods; and 

• short-cut hedge accounting, which can be used for transactions for which the assumption can be made that the change in fair value of a hedged item, due to changes in the benchmark rate, exactly offsets the change in fair value of the related derivative. Under the short-cut method, the entire change in fair value of the interest-rate swap is considered to be effective at achieving offsetting changes in fair values or cash flows of the hedged asset or liability.

Derivatives that are used in fair-value hedges are typically executed at the same time as the hedged items, and we designate the hedged item in a qualifying hedge relationship as of the trade date. In many hedging relationships that use the short-cut method, we may designate the hedging relationship upon our commitment to disburse an advance or trade a consolidated obligation (CO) that settles within the shortest period of time possible for the type of instrument based on market-settlement conventions. In such circumstances, although the advance or CO will not be recognized in the financial statements until settlement date, the hedge meets the criteria for applying the short-cut method, provided all other short-cut criteria are also met. We then record the changes in fair value of the derivative and the hedged item beginning on the trade date.

Changes in the fair value of a derivative that is designated and qualifies as a fair-value hedge, along with changes in the fair value of the hedged asset or liability that are attributable to the hedged risk (including changes that reflect losses or gains on firm commitments), are recorded in other income (loss) as net (losses) gains on derivatives and hedging activities.

Changes in the fair value of a derivative that is designated and qualifies as a cash-flow hedge, to the extent that the hedge is effective, are recorded in accumulated other comprehensive loss, a component of capital, until earnings are affected by the variability of the cash flows of the hedged transaction.

For both fair-value and cash-flow hedges, any hedge ineffectiveness (which represents the amount by which the changes in the fair value of the derivative differ from the change in the fair value of the hedged item or the variability in the cash flows of the forecasted transaction) is recorded in other income (loss) as net (losses) gains on derivatives and hedging activities.

Accounting for Economic Hedges. An economic hedge is defined as a derivative hedging specific or nonspecific assets, liabilities, or firm commitments that does not qualify or was not designated for fair-value or cash-flow hedge accounting, but is an acceptable hedging strategy under our risk-management policy. These economic hedging strategies also comply with Finance Agency regulatory requirements prohibiting speculative derivative transactions. An economic hedge by definition introduces the potential for earnings variability caused by the changes in fair value of the derivatives that are recorded in income but not offset by corresponding changes in the fair value of the economically hedged assets, liabilities, or firm commitments. As a result, we recognize only the net interest and the change in fair value of these derivatives in other income (loss) as net (losses) gains on derivatives and hedging activities with no offsetting fair-value adjustments for the economically hedged assets, liabilities, or firm commitments.

Accrued Interest Receivable and Payable. The differential between accrual of interest receivable and payable on derivatives designated as a fair-value hedge or as a cash-flow hedge is recognized through adjustments to the interest income or interest

30

expense of the designated hedged investment securities, advances, COs, deposits, or other financial instruments. The differential between accrual of interest receivable and payable on economic hedges is recognized in other income (loss), along with changes in fair value of these derivatives, as net (losses) gains on derivatives and hedging activities.

Discontinuance of Hedge Accounting. We may discontinue hedge accounting prospectively when:

• we determine that the derivative is no longer effective in offsetting changes in the fair value or cash flows of a hedged item (including hedged items such as firm commitments or forecasted transactions);

• the derivative and/or the hedged item expires or is sold, terminated, or exercised;

• it is no longer probable that the forecasted transaction will occur in the originally expected period;

• a hedged firm commitment no longer meets the definition of a firm commitment; or

• we determine that designating the derivative as a hedging instrument is no longer appropriate.

When hedge accounting is discontinued because we determine that the derivative no longer qualifies as an effective fair-value hedge of an existing hedged item, we either terminate the derivative or continue to carry the derivative on the statement of condition at its fair value and cease to adjust the hedged asset or liability for changes in fair value, and begin to amortize the cumulative basis adjustment on the hedged item into earnings over the remaining life of the hedged item using the level-yield method.

When hedge accounting is discontinued because we determine that the derivative no longer qualifies as an effective cash-flow hedge of an existing hedged item, we continue to carry the derivative on the statement of condition at its fair value and amortize the cumulative other comprehensive loss adjustment to earnings when earnings are affected by the existing hedged item.

If it is no longer probable that a forecasted transaction will occur by the end of the originally expected period or within two months thereafter, we immediately recognize the gain or loss that was in accumulated other comprehensive loss in earnings. In rare cases we may discontinue cash-flow hedge accounting, but the existence of extenuating circumstances related to the nature of the forecasted transaction and that are outside of our control or influence may make it probable that the forecasted transaction occurs in the future, on a date that is beyond the additional two-month period of time. In such cases, the gain or loss on the derivative remains in accumulated other comprehensive loss and is recognized in earnings when the forecasted transaction occurs.

When hedge accounting is discontinued because the hedged item no longer meets the definition of a firm commitment, we continue to carry the derivative on the statement of condition at its fair value, removing from the statement of condition any asset or liability that was recorded to recognize the firm commitment and recording it as a gain or loss in current period earnings.

Embedded Derivatives. We may issue debt, make advances, or purchase financial instruments in which a derivative instrument is embedded. Upon execution of these transactions, we assess whether the economic characteristics of the embedded derivative are clearly and closely related to the economic characteristics of the remaining component of the advance, debt, deposit, or other financial instrument (the host contract) and whether a separate, nonembedded instrument with the same terms as the embedded instrument would meet the definition of a derivative instrument. When we determine that (1) the embedded derivative has economic characteristics that are not clearly and closely related to the economic characteristics of the host contract and (2) a separate, stand-alone instrument with the same terms would qualify as a derivative instrument, the embedded derivative is separated from the host contract, carried at fair value, and designated as a stand-alone derivative instrument. If the entire contract (the host contract and the embedded derivative) is to be measured at fair value, with changes in fair value reported in current earnings (for example, an investment security classified as trading, as well as hybrid financial instruments) or if we cannot reliably identify and measure the embedded derivative for purposes of separating that derivative from its host contract, the entire contract is carried on the statement of condition at fair value and no portion of the contract is designated as a hedging instrument. At September 30, 2012, the Bank had certain advances with embedded features that met the requirement to be separated from the host contract and designate the embedded features as a stand-alone derivative. The value of the embedded derivatives is included in total advances on the Statement of Condition. See Note 7 — Advances for the fair value of the embedded derivatives. 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 as of December 31, 2011.

Financial Statement Impact and Additional Financial Information. The notional amount of derivatives is a factor in determining periodic interest payments or cash flows received and paid. However, the notional amount of derivatives represents

31

neither the actual amounts exchanged nor our overall exposure to credit and market risk. The risks of derivatives can be measured meaningfully on a portfolio basis that takes into account the derivatives, the item being hedged, and any offsets between the two.

The following table presents the fair value of derivative instruments as of September 30, 2012 (dollars in thousands):

	Notional Amount of Derivatives		Derivative Assets			Derivative Liabilities
Derivatives designated as hedging instruments
Interest-rate swaps	$	14,840,400	$	115,475		$	(964,100	)
Interest-rate futures / forwards	1,250,000		—			(64,855		)
Total derivatives designated as hedging instruments	16,090,400		115,475			(1,028,955		)
Derivatives not designated as hedging instruments
Interest-rate swaps	1,165,250		537			(35,932		)
Interest-rate caps or floors	300,000		42			—
Mortgage-delivery commitments (1)	41,506		85			(128		)
Total derivatives not designated as hedging instruments	1,506,756		664			(36,060		)
Total notional amount of derivatives	$	17,597,156
Total derivatives before netting and collateral adjustments			116,139			(1,065,015		)
Netting adjustments (2)			(115,280		)	115,280
Cash collateral received from counterparties, including accrued interest			(330		)	—
Derivative assets and derivative liabilities			$	529		$	(949,735	)

_______________________

(1)Mortgage-delivery commitments are classified as derivatives with changes in fair value recorded in other income.

(2)Amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions.

The following table presents the fair value of derivative instruments as of December 31, 2011 (dollars in thousands):

	Notional Amount of Derivatives		Derivative Assets			Derivative Liabilities
Derivatives designated as hedging instruments
Interest-rate swaps	$	19,326,022	$	229,091		$	(1,036,060	)
Interest-rate futures / forwards	700,000		—			(31,981		)
Total derivatives designated as hedging instruments	20,026,022		229,091			(1,068,041		)
Derivatives not designated as hedging instruments
Interest-rate swaps	235,750		—			(30,506		)
Interest-rate caps or floors	300,000		786			—
Mortgage-delivery commitments (1)	17,734		128			—
Total derivatives not designated as hedging instruments	553,484		914			(30,506		)
Total notional amount of derivatives	$	20,579,506
Total derivatives before netting and collateral adjustments			230,005			(1,098,547		)
Netting adjustments (2)			(193,438		)	193,438
Cash collateral received from counterparties, including accrued interest			(20,046		)	(195		)
Derivative assets and derivative liabilities			$	16,521		$	(905,304	)

_______________________

(1)Mortgage-delivery commitments are classified as derivatives with changes in fair value recorded in other income.

(2)Amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions.

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Net (losses) gains on derivatives and hedging activities recorded in Other Income (Loss) for the three and nine months endedSeptember 30, 2012, and 2011, were as follows (dollars in thousands).

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Derivatives and hedged items in fair-value hedging relationships:
Interest-rate swaps	$	597		$	445		$	255		$	1,846
Derivatives not designated as hedging instruments:
Economic hedges:
Interest-rate swaps	(3,243		)	(17,952		)	(10,105		)	(24,674		)
Interest-rate caps or floors	(207		)	(1,147		)	(745		)	(2,298		)
Mortgage-delivery commitments	767			1,180			2,086			1,599
Total net losses related to derivatives not designated as hedging instruments	(2,683		)	(17,919		)	(8,764		)	(25,373		)
Net losses on derivatives and hedging activities	$	(2,086	)	$	(17,474	)	$	(8,509	)	$	(23,527	)

The following tables present, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair-value hedge relationships and the impact of those derivatives on our net interest income for the three and nine months endedSeptember 30, 2012, and 2011 (dollars in thousands):

	For the Three Months Ended September 30, 2012
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	1,375		$	(1,116	)	$	259		$	(45,869	)
Investments	7,645			(7,183		)	462			(10,256		)
Deposits	(293		)	293			—			385
COs – bonds	(6,947		)	6,823			(124		)	21,003
	$	1,780		$	(1,183	)	$	597		$	(34,737	)
	For the Three Months Ended September 30, 2011
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	(68,999	)	$	68,954		$	(45	)	$	(68,212	)
Investments	(146,239		)	145,812			(427		)	(11,751		)
Deposits	(23		)	23			—			396
COs – bonds	28,819			(27,902		)	917			37,594
	$	(186,442	)	$	186,887		$	445		$	(41,973	)

_______________________

(1)  The net interest on derivatives in fair-value hedge relationships is presented in the interest income or interest expense of the respective hedged item in the statement of operations.

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	For the Nine Months Ended September 30, 2012
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	55,505		$	(56,798	)	$	(1,293	)	$	(149,548	)
Investments	(5,066		)	6,321			1,255			(30,626		)
Deposits	(908		)	908			—			1,151
COs – bonds	(109,114		)	109,407			293			68,893
	$	(59,583	)	$	59,838		$	255		$	(110,130	)
	For the Nine Months Ended September 30, 2011
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	(20,049	)	$	20,472		$	423		$	(218,021	)
Investments	(145,876		)	146,158			282			(35,973		)
Deposits	(381		)	381			—			1,183
COs – bonds	29,952			(28,811		)	1,141			122,699
	$	(136,354	)	$	138,200		$	1,846		$	(130,112	)

______________

(1)  The net interest on derivatives in fair-value hedge relationships is presented in the interest income or interest expense of the respective hedged item in the statement of operations.

The loss recognized in other comprehensive income for hedged items in cash-flow hedging relationships was$10.4 million and $25.2 million for the three months ended September 30, 2012, and 2011, respectively.

The loss recognized in other comprehensive income for hedged items in cash-flow hedging relationships was$32.9 million and $26.8 million for the nine months endedSeptember 30, 2012, and 2011, respectively.

For the nine months endedSeptember 30, 2012, there were no reclassifications from accumulated other comprehensive loss into earnings as a result of the discontinuance of cash-flow hedges because the original forecasted transactions were not expected to occur by the end of the originally specified time period or within a two-month period thereafter. The maximum length of time over which we are hedging our exposure to the variability in future cash flows for forecasted transactions is six years.

Managing Credit Risk on Derivatives. We are subject to credit risk on our hedging activities due to the risk of nonperformance by counterparties to the derivative agreements. The amount of potential counterparty risk depends on the extent to which master-netting arrangements are included in such contracts to mitigate the risk. We try to limit counterparty credit risk through our ongoing monitoring of counterparty creditworthiness and adherence to the requirements set forth in our policies and Finance Agency regulations. We require collateral agreements in connection with our derivatives transactions. These collateral agreements include collateral delivery thresholds. All counterparties must execute master-netting agreements prior to entering into any interest-rate-exchange agreement with us. These master-netting agreements contain bilateral-collateral exchange agreements that require that credit exposure beyond a defined threshold amount be secured by readily marketable, U.S. Treasury or GSE securities, or cash. The level of these collateral threshold amounts varies according to the counterparty's Standard & Poor's Ratings Services (S&P) or Moody's Investors Service (Moody's) long-term credit ratings. Credit exposures are then measured daily and adjustments to collateral positions are made in accordance with the terms of the master-netting agreements. These master-netting agreements also contain bilateral ratings-tied termination events permitting us to terminate all outstanding agreements with a counterparty in the event of a specified rating downgrade by Moody's or S&P. Based on credit analyses and collateral requirements, we do not anticipate any credit losses on our derivative agreements.

The table below presents credit-risk exposure on derivative instruments, excluding the amount of excess cash collateral received from counterparties in instances where a counterparty's pledged cash collateral to us exceeds our net position (dollars in thousands).

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	September 30, 2012			December 31, 2011
Total net exposure at fair value(1)	$	859		$	36,567
Less: cash collateral received from counterparties, including accrued interest	(330		)	(20,046		)
Net exposure after cash collateral	$	529		$	16,521

_______________________

(1)  Includes net accrued interest receivable of $1.7 million and $988,000 at September 30, 2012, and December 31, 2011, respectively.

Certain of our master-netting agreements contain provisions that require us to post additional collateral with our counterparties if there is deterioration in our credit ratings. Under the terms that govern such agreements, if our credit rating is lowered by Moody's or S&P to a certain level, we are required to deliver additional collateral on derivative instruments in a net liability position. In the event of a split among such credit ratings, the lower ratings govern. The aggregate fair value of all derivative instruments with these provisions that were in a net-liability position (before cash collateral and related accrued interest) at September 30, 2012, was $949.6 million for which we had delivered collateral with a post-haircut value of $800.9 million in accordance with the terms of the master-netting agreements. The following table sets forth the post-haircut value of incremental collateral that certain swap counterparties could have required us to deliver based on incremental credit rating downgrades at September 30, 2012 (dollars in thousands).

Post-haircut Value of Incremental Collateral to be Delivered  as of September 30, 2012
Ratings Downgrade (1)
From	To	Incremental Collateral(2)
AA+	AA or AA-	$	39,664
AA-	A+, A or A-	79,106
A-	below A-	14,000

_______________________

(1) Ratings are expressed in this table according to S&P's conventions but include the equivalent of such rating by Moody's and they represent the lower of our S&P and Moody's ratings.

(2) Additional collateral of $15.9 million could be called by counterparties as of September 30, 2012, at our current credit rating of AA+ (based on the lower of our credit ratings from S&P and Moody's) and is not included in the table.

We execute derivatives with nonmember counterparties with long-term ratings of single-A (or equivalent) or better by S&P, Moody's, and Fitch, Inc. (Fitch) at the time of the transaction, although risk-reducing trades are permitted for counterparties whose ratings have fallen below these ratings. Some of these counterparties or their affiliates buy, sell, and distribute COs. See Note 12 — Consolidated Obligations for additional information. See also Note 18 — Commitments and Contingencies for a discussion of assets we have pledged to these counterparties. We are not a derivatives dealer and do not trade derivatives for short-term profit.

Note 11 — Deposits

We offer demand and overnight deposits for members and qualifying nonmembers. In addition, we offer short-term interest-bearing deposit programs to members. Members that service mortgage loans may deposit funds collected in connection with mortgage loans pending disbursement of such funds to the owners of the mortgage loans. We classify these items as "other" in the following table.

Deposits at September 30, 2012, and December 31, 2011, include hedging adjustments of $3.1 million and $4.0 million, respectively.

The following table details interest-bearing and non-interest-bearing deposits (dollars in thousands):

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	September 30, 2012		December 31, 2011
Interest bearing
Demand and overnight	$	623,302	$	600,155
Term	21,894		22,401
Other	3,585		4,571
Non-interest bearing
Other	36,547		27,119
Total deposits	$	685,328	$	654,246

The aggregate amount of time deposits with a denomination of $100,000 or more was $20.0 million as of September 30, 2012, and December 31, 2011.

Note 12 — Consolidated Obligations

COs consist of CO bonds and CO discount notes. CO bonds are issued primarily to raise intermediate- and long-term funds and are not subject to any statutory or regulatory limits on maturity. CO discount notes are issued to raise short-term funds and have original maturities of up to one year. These notes sell at less than their face amount and are redeemed at par value when they mature.

The following table sets forth the outstanding CO bonds for which we were primarily liable at September 30, 2012, and December 31, 2011, by year of contractual maturity (dollars in thousands):

	September 30, 2012					December 31, 2011
Year of Contractual Maturity	Amount			Weighted Average Rate (1)		Amount			Weighted Average Rate (1)
Due in one year or less	$	10,501,520		1.60	%	$	12,825,580		1.27	%
Due after one year through two years	6,133,520			1.49		7,196,250			2.04
Due after two years through three years	2,697,160			2.25		2,776,845			2.42
Due after three years through four years	2,771,570			2.48		1,964,000			3.20
Due after four years through five years	2,350,255			2.03		1,832,350			2.34
Thereafter	3,474,230			3.10		2,938,350			3.90
Total par value	27,928,255			1.95	%	29,533,375			2.03	%
Premiums	248,542					179,113
Discounts	(25,296		)			(29,833		)
Hedging adjustments	87,398					196,805
	$	28,238,899				$	29,879,460

_______________________

(1)The CO bonds' weighted-average rate excludes concession fees.

Our CO bonds outstanding at September 30, 2012, and December 31, 2011, included (dollars in thousands):

	September 30, 2012		December 31, 2011
Par value of CO bonds
Noncallable and non-putable	$	26,195,255	$	26,535,375
Callable	1,733,000		2,998,000
Total par value	$	27,928,255	$	29,533,375

The following is a summary of the CO Bonds for which we are primarily liable at September 30, 2012, and December 31, 2011, by year of contractual maturity or next call date for callable CO bonds (dollars in thousands):

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Year of Contractual Maturity or Next Call Date	September 30, 2012		December 31, 2011
Due in one year or less	$	12,041,520	$	14,425,580
Due after one year through two years	6,196,520		7,234,250
Due after two years through three years	2,627,160		2,531,845
Due after three years through four years	2,786,570		1,849,000
Due after four years through five years	2,300,255		1,387,350
Thereafter	1,976,230		2,105,350
Total par value	$	27,928,255	$	29,533,375

The following table sets forth the CO bonds for which we were primarily liable by interest-rate-payment type at September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012		December 31, 2011
Par value of CO bonds
Fixed-rate	$	22,803,255	$	25,473,375
Simple variable-rate	4,760,000		3,350,000
Step-up	365,000		710,000
Total par value	$	27,928,255	$	29,533,375

At September 30, 2012, and December 31, 2011, 33.5 percent and 42.5 percent, respectively, of our fixed-rate CO bonds were swapped to a floating rate. At September 30, 2012, 11.6 percent of our variable-rate bonds were swapped to a different variable-rate index. We did not have any swapped variable rate bonds at December 31, 2011.

COs – Discount Notes. Outstanding CO discount notes for which we were primarily liable, all of which are due within one year, were as follows (dollars in thousands):

	Book Value		Par Value		Weighted Average Rate (1)
September 30, 2012	$	11,993,572	$	11,995,000	0.12	%
December 31, 2011	$	14,651,793	$	14,652,040	0.01	%

_______________________

(1)The CO discount notes' weighted-average rate represents a yield to maturity excluding concession fees.

Note 13 — Affordable Housing Program

We charge the amount set aside for the AHP to income and recognize it as a liability. We then reduce the AHP liability as the funds are disbursed. We had outstanding principal in AHP advances of $98.7 million and $97.9 million at September 30, 2012, and December 31, 2011, respectively.

The following table is a roll-forward of the AHP liability for the nine months endedSeptember 30, 2012, and the year ended December 31, 2011 (dollars in thousands):

	September 30, 2012			December 31, 2011
Balance at beginning of year	$	34,241		$	23,138
AHP expense for the period	17,160			17,812
AHP direct grant disbursements	(4,313		)	(5,775		)
AHP subsidy for AHP advance disbursements	(1,427		)	(1,371		)
Return of previously disbursed grants and subsidies	72			437
Balance at end of period	$	45,733		$	34,241

Note 14 — Capital

We are subject to capital requirements under our capital plan, the FHLBank Act and Finance Agency regulations:

1.Risk-based capital. We are required to maintain at all times permanent capital, defined as Class B stock and retained

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earnings, in an amount at least equal to the sum of our credit-risk capital requirement, market-risk capital requirement, and operations-risk capital requirement, calculated in accordance with Finance Agency rules and regulations, referred to herein as the risk-based capital requirement. Only permanent capital satisfies this risk-based capital requirement. The Finance Agency may require us to maintain a greater amount of permanent capital than is required as defined by the risk-based capital requirements.

2.Total regulatory capital. We are required to maintain at all times a total capital-to-assets ratio of at least four percent. Total regulatory capital is the sum of permanent capital, any general loss allowance if consistent with GAAP and not established for specific assets, and other amounts from sources determined by the Finance Agency as available to absorb losses.

3.Leverage capital. We are required to maintain at all times a leverage capital-to-assets ratio of at least five percent. A leverage capital-to-assets ratio is defined as permanent capital weighted 1.5 times divided by total assets.

Mandatorily redeemable capital stock, which is classified as a liability under GAAP, is considered capital for determining our compliance with our regulatory capital requirements.

The following tables demonstrate our compliance with our regulatory capital requirements at September 30, 2012, and December 31, 2011 (dollars in thousands):

Risk-Based Capital Requirements	September 30, 2012		December 31, 2011
Permanent capital
Class B capital stock	$	3,433,016	$	3,625,348
Mandatorily redeemable capital stock	215,863		227,429
Retained earnings	538,234		398,097
Total permanent capital	$	4,187,113	$	4,250,874
Risk-based capital requirement
Credit-risk capital	$	494,777	$	582,879
Market-risk capital	71,865		91,337
Operations-risk capital	169,993		202,265
Total risk-based capital requirement	$	736,635	$	876,481
Excess of risk-based capital requirement	$	3,450,478	$	3,374,393

	September 30, 2012						December 31, 2011
	Required			Actual			Required			Actual
Capital Ratio
Risk-based capital	$	736,635		$	4,187,113		$	876,481		$	4,250,874
Total regulatory capital	$	1,829,701		$	4,187,113		$	1,998,733		$	4,250,874
Total capital-to-asset ratio	4.0		%	9.2		%	4.0		%	8.5		%
Leverage Ratio
Leverage capital	$	2,287,127		$	6,280,670		$	2,498,417		$	6,376,311
Leverage capital-to-assets ratio	5.0		%	13.7		%	5.0		%	12.8		%

Restricted Retained Earnings. Pursuant to a joint capital enhancement agreement among the FHLBanks, as amended (the Joint Capital Agreement), and our capital plan, we, together with the other FHLBanks, are required to contribute 20 percent of our quarterly net income to a restricted retained earnings account until the balance of that account equals at least one percent of the FHLBank's average balance of outstanding COs (excluding fair-value adjustments) for the calendar quarter. At September 30, 2012, our contribution requirement totaled $417.8 million. As of September 30, 2012, and December 31, 2011, restricted retained earnings totaled $53.7 million and $22.9 million, respectively.

Note 15 — Accumulated Other Comprehensive Loss

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The following table presents a summary of changes in accumulated other comprehensive loss for the nine months ended September 30, 2012, and 2011 (dollars in thousands):

	Net Unrealized Loss on Available-for-Sale Securities			Net Noncredit Portion of Other-Than-Temporary Impairment Losses on Held-to-Maturity Securities			Net Unrealized Loss Relating to Hedging Activities			Pension and Postretirement Benefits			Total Accumulated Other Comprehensive Loss
Balance, December 31, 2010	$	(15,193	)	$	(621,528	)	$	(341	)	$	(1,049	)	$	(638,111	)
Other comprehensive income (loss)	(18,353		)	166,803			(26,832		)	(224		)	121,394
Balance, September 30, 2011	$	(33,546	)	$	(454,725	)	$	(27,173	)	$	(1,273	)	$	(516,717	)
Balance, December 31, 2011	$	(48,560	)	$	(450,996	)	$	(32,308	)	$	(2,547	)	$	(534,411	)
Other comprehensive (loss) income	15,643			47,457			(32,863		)	(500		)	29,737
Balance, September 30, 2012	$	(32,917	)	$	(403,539	)	$	(65,171	)	$	(3,047	)	$	(504,674	)

Note 16 — Employee Retirement Plans

Qualified Defined Benefit Multiemployer Plan. We participate in the Pentegra Defined Benefit Plan for Financial Institutions (the Pentegra Defined Benefit Plan), a funded, tax-qualified, noncontributory defined-benefit pension plan. The Pentegra Defined Benefit Plan is treated as a multiemployer plan for accounting purposes, but operates as a multiple-employer plan under the Employee Retirement Income Security Act of 1974, as amended, and the Internal Revenue Code. Accordingly, certain multiemployer plan disclosures, including the certified zone status, are not applicable to the Pentegra Defined Benefit Plan. Under the Pentegra Defined Benefit Plan, contributions made by a participating employer may be used to provide benefits to employees of other participating employers since assets contributed by an employer are not segregated in a separate account or restricted to provide benefits only to employees of that employer. Also, in the event a participating employer is unable to meet its contribution requirements, the required contributions for the other participating employers could increase proportionately. The plan covers substantially all of our officers and employees. The following table shows the net pension cost charged to compensation and benefits expense (dollars in thousands).

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
Net pension cost	$	1,104	$	1,250	$	3,212	$	3,098

Qualified Defined Contribution Plan. We also participate in the Pentegra Defined Contribution Plan for Financial

Institutions, a tax-qualified defined contribution plan. The plan covers substantially all of our officers and employees. We contribute a percentage of the participants' compensation by making a matching contribution equal to a percentage of voluntary employee contributions, subject to certain limitations. Our matching contributions are charged to compensation and benefits expense.

Nonqualified Defined Contribution Plan. We also maintain the Thrift Benefit Equalization Plan, a nonqualified, unfunded deferred compensation plan covering certain of our senior officers and directors. The plan's liability consists of the accumulated compensation deferrals and the accumulated earnings on these deferrals. Our obligation from this plan, was $3.6 million and $3.2 million at September 30, 2012, and December 31, 2011, respectively. We maintain a rabbi trust intended to satisfy future benefit obligations.

The following table sets forth expenses relating to our defined contribution plans (dollars in thousands):

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	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
Qualified Defined Contribution Plan - Pentegra Defined Contribution Plan	$	232	$	212	$	713	$	646
Nonqualified Defined Contribution Plan - Thrift Benefit Equalization Plan	11		16		80		68

Nonqualified Supplemental Defined Benefit Retirement Plan. We also maintain a nonqualified, unfunded defined-benefit plan covering certain senior officers. We maintain a rabbi trust intended to meet future benefit obligations.

Postretirement Benefits. We sponsor a fully insured postretirement benefit program that includes life insurance benefits for eligible retirees. We provide life insurance to all employees who retire on or after age 55 after completing six years of service. No contributions are required from the retirees. There are no funded plan assets that have been designated to provide postretirement benefits.

In connection with the nonqualified supplemental defined benefit retirement plan and postretirement benefits, we recorded the following amounts as of September 30, 2012, and December 31, 2011 (dollars in thousands):

	Nonqualified Supplemental Defined Benefit Retirement Plan						Postretirement Benefits
	September 30, 2012			December 31, 2011			September 30, 2012			December 31, 2011
Change in benefit obligation (1)
Benefit obligation at beginning of year	$	5,901		$	3,859		$	634		$	499
Service cost	299			261			24			25
Interest cost	209			238			21			26
Actuarial loss (gain)	860			1,543			(4		)	97
Benefits paid	(301		)	—			(13		)	(13		)
Benefit obligation at end of period	6,968			5,901			662			634
Change in plan assets
Fair value of plan assets at beginning of year	—			—			—			—
Employer contribution	301			—			13			13
Benefits paid	(301		)	—			(13		)	(13		)
Fair value of plan assets at end of period	—			—			—			—
Funded status at end of period	$	(6,968	)	$	(5,901	)	$	(662	)	$	(634	)

______________________

(1) This represents projected benefit obligation for the nonqualified supplemental defined benefit retirement plan and accumulated postretirement benefit obligation for postretirement benefits.

The following table presents the components of net periodic benefit cost and other amounts recognized in accumulated other comprehensive loss for our nonqualified supplemental defined benefit retirement plan and postretirement benefits for the three and nine months endedSeptember 30, 2012, and 2011 (dollars in thousands):

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	Nonqualified Supplemental Defined Benefit Retirement Plan For the Three Months Ended September 30,				Postretirement Benefits For the Three Months Ended September 30,
	2012		2011		2012		2011
Net Periodic Benefit Cost
Service cost	$	120	$	71	$	8	$	6
Interest cost	83		64		7		7
Amortization of net actuarial loss	116		35		3		—
Net periodic benefit cost	$	319	$	170	$	18	$	13
	Nonqualified Supplemental Defined Benefit Retirement Plan For the Nine Months Ended September 30,				Postretirement Benefits For the Nine Months Ended September 30,
	2012		2011		2012		2011
Net Periodic Benefit Cost
Service cost	$	299	$	191	$	24	$	19
Interest cost	209		173		21		20
Amortization of net actuarial loss	349		106		7		1
Net periodic benefit cost	$	857	$	470	$	52	$	40

Note 17 — Fair Values

The carrying values, fair values and fair-value hierarchy of our financial instruments at September 30, 2012 were as follows (dollars in thousands):

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	September 30, 2012
	Carrying Value			Total Fair Value			Level 1			Level 2			Level 3		Netting Adjustments and Cash Collateral
Financial instruments
Assets:
Cash and due from banks	$	306,166		$	306,166		$	306,166		$	—		$	—	$	—
Interest-bearing deposits	261			261			261			—			—		—
Securities purchased under agreements to resell	5,125,000			5,124,986			—			5,124,986			—		—
Federal funds sold	1,100,000			1,099,996			—			1,099,996			—		—
Trading securities(1)	279,420			279,420			—			279,420			—		—
Available-for-sale securities(1)	5,764,096			5,764,096			—			5,764,096			—		—
Held-to-maturity securities(2)	5,679,296			5,915,270			—			4,319,536			1,595,734		—
Advances	23,915,687			24,362,020			—			24,362,020			—		—
Mortgage loans, net	3,431,534			3,674,029			—			3,674,029			—		—
Accrued interest receivable	95,950			95,950			—			95,950			—		—
Derivative assets(1)	529			529			—			116,139			—		(115,610		)
Liabilities:
Deposits	(685,328		)	(685,177		)	—			(685,177		)	—		—
COs:
Bonds	(28,238,899		)	(29,024,692		)	—			(29,024,692		)	—		—
Discount notes	(11,993,572		)	(11,993,960		)	—			(11,993,960		)	—		—
Mandatorily redeemable capital stock	(215,863		)	(215,863		)	(215,863		)	—			—		—
Accrued interest payable	(128,966		)	(128,966		)	—			(128,966		)	—		—
Derivative liabilities(1)	(949,735		)	(949,735		)	—			(1,065,015		)	—		115,280
Other:
Commitments to extend credit for advances	—			996			—			996			—		—
Standby bond-purchase agreements	—			641			—			641			—		—
Standby letters of credit	(531		)	(531		)	—			(531		)	—		—

_______________________

(1) Carried at fair value on a recurring basis.

(2) Private-label residential MBS and HFA securities are categorized as Level 3. Private-label residential MBS that have suffered other than temporary impairments are measured at fair value on a nonrecurring basis. See the recurring and nonrecurring tables below for more details.

The carrying values and fair values of our financial instruments at December 31, 2011, were as follows (dollars in thousands):

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	December 31, 2011
	Carrying Value			Fair Value
Financial instruments
Assets:
Cash and due from banks	$	112,094		$	112,094
Interest-bearing deposits	177			177
Securities purchased under agreements to resell	6,900,000			6,899,645
Federal funds sold	2,270,000			2,269,951
Trading securities	274,164			274,164
Available-for-sale securities	5,280,199			5,280,199
Held-to-maturity securities	6,655,008			6,663,066
Advances	25,194,898			25,718,265
Mortgage loans, net	3,109,223			3,305,265
Accrued interest receivable	116,517			116,517
Derivative assets	16,521			16,521
Liabilities:
Deposits	(654,246		)	(654,094		)
COs:
Bonds	(29,879,460		)	(30,655,174		)
Discount notes	(14,651,793		)	(14,651,926		)
Mandatorily redeemable capital stock	(227,429		)	(227,429		)
Accrued interest payable	(110,782		)	(110,782		)
Derivative liabilities	(905,304		)	(905,304		)
Other:
Commitments to extend credit for advances	—			2,612
Standby bond-purchase agreements	—			1,814
Standby letters of credit	(625		)	(625		)

Fair-Value Methodologies and Techniques.

We have determined the fair-value amounts above using available market and other pertinent information and our best judgment of appropriate valuation methods. Although we use our best judgment in estimating the fair value of these financial instruments, there are inherent limitations in any estimation technique or valuation methodology. For example, because an active secondary market does not exist for a portion of our financial instruments, in certain cases, fair values are not subject to precise quantification or verification and may change as economic and market factors and evaluation of those factors change. Therefore, these fair values are not necessarily indicative of the amounts that would be realized in current market transactions, although they do reflect our judgment of how a market participant would estimate the fair values.

Fair-Value Hierarchy. Fair value is the price in an orderly transaction between market participants to sell an asset or transfer a liability in the principal (or most advantageous) market for the asset or liability at the measurement date (an exit price).

We record trading securities, available-for-sale securities, derivative assets, and derivative liabilities at fair value on a recurring basis and on occasion, certain private-label MBS and REO on a nonrecurring basis. The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The inputs are evaluated and an overall level for the fair-value measurement is determined. This overall level is an indication of market observability of the fair-value measurement for the asset or liability.

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

Level 1Quoted prices (unadjusted) for identical assets or liabilities in an active market that the reporting entity

can access on the measurement date.

Level 2Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. If the asset or liability has a specified or contractual term, a Level 2 input must be observable for

43

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; (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, volatilities, and prepayment speeds); and (4) inputs that are derived principally from or corroborated by observable market data (e.g., implied spreads).

Level 3Unobservable inputs for the asset or liability.

We review the 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 nine months endedSeptember 30, 2012 and 2011.

Summary of Valuation Methodologies and Primary Inputs

Cash and Due from Banks. The fair value approximates the recorded carrying value.

Interest-Bearing Deposits. The fair value approximates the recorded carrying value.

Securities Purchased under Agreements to Resell. The fair value is determined by calculating the present value of expected future cash flows. The discount rates used in these calculations are the rates for securities with similar terms.

Federal Funds Sold. The fair value is determined by calculating the present value of the expected future cash flows. The discount rates used in these calculations are the rates for federal funds with similar terms.

Investment Securities. We determine the fair values of our investment securities, other than HFA floating-rate securities, based on prices obtained for each of these securities that we request from four designated third-party pricing vendors. The fair value of each such security is the average of such vendor prices that are within a cluster pricing tolerance range. A cluster is defined as a group of available vendor prices for a given security that is within a defined price tolerance range of the median vendor price depending on the security type. An outlier is any vendor price that is outside of the defined cluster and is evaluated for reasonableness. The use of the average of available vendor prices within a cluster and the evaluation of reasonableness of outlier prices does not discard available information. In addition, we review the fair values the method produces for reasonableness.

We request prices on each of our securities subject to this fair-value method from four third-party vendors, when available. These pricing vendors use methods that generally employ, but are not limited to, benchmark yields, recent trades, dealer estimates, valuation models, benchmarking of like securities, sector groupings, and/or matrix pricing. We establish a median price for each security using a formula that is based on the number of prices received:

• if four prices are received, the average of the two middle prices is used;

• if three prices are received, the middle price is used;

• if two prices are received, the average of the two prices is used; and

• if one price is received, it is used subject to validation as described below.

Vendor prices that are outside of a defined cluster are identified as outliers and are subject to additional review 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, or use of internal model prices, which we believe reflect the facts and circumstances that a market participant would consider. We also perform this analysis in those limited instances where no third-party vendor price or only one third-party vendor price is available to determine fair value. If the analysis indicates that an outlier (or outliers) is (are) not representative of fair value and that the average of the vendor prices within the tolerance threshold of the median price is the best estimate, then we use the average of the vendor prices within the tolerance threshold of the median price as the final price. If, on the other hand, we determine that an outlier (or some other price identified in the analysis) is a better estimate of fair value, then the outlier (or the other price as appropriate) is used as the final price. In all cases, the final price is used to determine the fair value of the security.

As of September 30, 2012, four vendor prices were received for 93 percent of our investment securities and the final prices for substantially all of those securities were computed by averaging the four prices. Substantially all of our securities were priced

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by at least three vendors. The relative proximity of the prices received supports our conclusion that the final computed prices are reasonable estimates of fair value. Based on the current lack of market activity for private-label residential MBS, the nonrecurring fair-value measurements for such securities as of September 30, 2012, and December 31, 2011, fell within Level 3 of the fair-value hierarchy. Our fixed-rate HFA securities also fall within Level 3 of the fair-value hierarchy due to the current lack of market activities for these bonds.

Investment Securities – HFA Floating Rate Securities. The fair value isdetermined by calculating the present value of the expected future cash flows. The discount rates used in these calculations are the rates for securities with similar terms. Our floating rate HFA securities also fall within level 3 of the fair-value hierarchy due to the current lack of market activities for these bonds.

Advances. We determine the fair value of advances by calculating the present value of expected future cash flows from the advances and excluding the amount of accrued interest receivable. The discount rates used in these calculations are the current replacement rates for advances with similar terms. We calculate our replacement advance rates at a spread to our cost of funds. Our cost of funds approximates the CO curve. See — COs within this note for a discussion of the CO curve. We use market-based expectations of future interest-rate volatility implied from current market prices for similar options to estimate the fair values of advances with optionality. In accordance with the Finance Agency's advances regulations, advances with a maturity or repricing period greater than six months require a prepayment fee sufficient to make us financially indifferent to the borrower's decision to prepay the advances. Therefore, the fair value of advances does not assume prepayment risk. We do not account for credit risk in determining the fair value of our advances due to the strong credit protections that mitigate the credit risk associated with advances. Collateral requirements for advances provide surety for the repayment such that the probability of credit losses on advances is very low. We have the ability to establish a blanket lien on all financial assets of most members, and in the case of federally insured depository institutions, our lien has a statutory priority over all other creditors with respect to collateral that has not been perfected by other parties. All of these factors serve to mitigate credit risk on advances.

Mortgage Loans. The fair values for mortgage loans are determined based on quoted market prices of similar mortgage-loans adjusted for credit and liquidity risk.

REO. Fair value is derived from third-party valuations of the property, which fall within level 3 of the fair-value hierarchy.

Accrued Interest Receivable and Payable. The fair value approximates the recorded carrying value.

Derivative Assets/Liabilities – Interest-Rate-Exchange Agreements. We base the fair values of interest-rate-exchange agreements on available market prices of derivatives having similar terms, including accrued interest receivable and payable. The fair value is based on the LIBOR swap curve and forward rates at period-end and, for agreements containing options, the market's expectations of future interest-rate volatility implied from current market prices of similar options. The fair-value methodology uses standard valuation techniques for derivatives such as discounted cash-flow analysis and comparisons with similar instruments. The discounted cash-flow model uses market-observable inputs (inputs that are actively quoted and can be validated to external sources). The fair values are netted by counterparty, including cash collateral received from or delivered to the counterparty, where an offset right exists. If these netted amounts are positive, they are classified as an asset, and if negative, they are classified as a liability. We enter into master-netting agreements for interest-rate-exchange agreements with institutions that have long-term senior unsecured credit ratings that are at or above single-A (or equivalent) by S&P and Moody's. We maintain master-netting agreements, which include bilateral collateral agreements, to reduce our exposure to counterparty defaults. These bilateral-collateral agreements require credit exposures beyond a defined threshold amount to be secured by U.S. government or GSE-issued securities or cash. All of these factors serve to mitigate credit and nonperformance risk to us. We generally use a midmarket pricing convention based on the bid-ask spread as a practical expedient for fair-value measurements. Because these estimates are made at a specific point in time, they are susceptible to material near-term changes. We have evaluated the potential for the fair value of the instruments to be affected by counterparty risk and our own credit risk and have determined that no adjustments were significant to the overall fair-value measurements.

Derivative Assets/Liabilities – Commitments to Invest in Mortgage Loans.Commitments to invest in mortgage loans are recorded as derivatives in the statement of condition. The fair values of such commitments are based on the end-of-day delivery commitment prices provided by the FHLBank of Chicago and a spread, which are derived from MBS to-be-announced delivery commitment prices with adjustment for the contractual features of the MPF program, such as servicing and credit-enhancement features.

Deposits. We determine the fair values of term deposits by calculating the present value of expected future cash flows from the deposits and reducing this amount by any accrued interest payable. The discount rates used in these calculations are the costs of currently issued deposits with similar terms.

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COs. We estimate fair values based on the cost of issuing comparable term debt, excluding non-interest selling costs. Fair values of COs without embedded options are determined based on internal valuation models that use market-based yield curve inputs obtained from the Office of Finance (the FHLBanks' agent that issues and services COs). Fair values of COs with embedded options are determined by internal valuation models with market-based inputs obtained from the Office of Finance and derivative dealers. Our internal valuation models use standard valuation techniques and estimate fair values based on the following inputs.

• CO Curve. The Office of Finance constructs an internal yield curve, referred to as the CO curve, using the U.S. Treasury curve as a base yield curve that is then adjusted by adding indicative spreads obtained from market observable sources. These market indications are generally derived from pricing indications from dealers, historical pricing relationships, recent GSE debt trades, and secondary market activity.

• Volatility Assumption. To estimate the fair values of consolidated obligations with optionality, we use market-based expectations of future interest-rate volatility implied from current market prices for similar options.

Mandatorily Redeemable Capital Stock. The fair value of capital stock subject to mandatory redemption is generally equal to its par as indicated by contemporaneous member purchases and sales at par value. Fair value also includes an estimated dividend earned at the time of reclassification from equity to liabilities, until such amount is paid, and any subsequently declared dividend. Capital stock can only be acquired by our members at par value and redeemed at par value. Our capital stock is not traded and no market mechanism exists for the exchange of capital stock outside of our cooperative structure.

Commitments. The fair value of our standby bond-purchase agreements is based on the present value of the estimated fees we receive for providing these agreements discounted at yields comparable to those of the related bonds, taking into account the remaining terms of such agreements. For fixed-rate advance commitments, fair value also considers the difference between current levels of interest rates and the committed rates.

Subjectivity of Estimates. Estimates of the fair value of financial assets and liabilities using the methodologies 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. Since these estimates are made as of a specific point in time, they are susceptible to material near-term changes.

Fair Value Measured on a Recurring Basis.

The following tables present our assets and liabilities that are measured at fair value on the statement of condition, which are recorded on a recurring basis at September 30, 2012, and December 31, 2011, by fair-value hierarchy level (dollars in thousands):

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	September 30, 2012
	Level 1		Level 2			Level 3		Netting Adjustment (1)			Total
Assets:
Trading securities:
U.S. government-guaranteed – residential MBS	$	—	$	17,496		$	—	$	—		$	17,496
GSEs – residential MBS	—		5,380			—		—			5,380
GSEs – commercial MBS	—		256,544			—		—			256,544
Total trading securities	—		279,420			—		—			279,420
Available-for-sale securities:
Supranational institutions	—		473,416			—		—			473,416
Corporate bonds (2)	—		308,225			—		—			308,225
U.S. government-owned corporations	—		293,600			—		—			293,600
GSEs	—		2,148,466			—		—			2,148,466
U.S. government guaranteed – residential MBS	—		76,957			—		—			76,957
GSEs – residential MBS	—		2,361,517			—		—			2,361,517
GSEs – commercial MBS	—		101,915			—		—			101,915
Total available-for-sale securities	—		5,764,096			—		—			5,764,096
Derivative assets:
Interest-rate-exchange agreements	—		116,054			—		(115,610		)	444
Mortgage delivery commitments	—		85			—		—			85
Total derivative assets	—		116,139			—		(115,610		)	529
Total assets at fair value	$	—	$	6,159,655		$	—	$	(115,610	)	$	6,044,045
Liabilities:
Derivative liabilities
Interest-rate-exchange agreements	$	—	$	(1,064,887	)	$	—	$	115,280		$	(949,607	)
Mortgage delivery commitments	—		(128		)	—		—			(128		)
Total liabilities at fair value	$	—	$	(1,065,015	)	$	—	$	115,280		$	(949,735	)

_______________________

(1)These amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparty. Net cash collateral associated with derivatives, including accrued interest, as of September 30, 2012, totaled $330,000.

(2) These securities are corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. Government.

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	December 31, 2011
	Level 1		Level 2			Level 3		Netting Adjustment (1)			Total
Assets:
Trading securities:
U.S. government-guaranteed – residential MBS	$	—	$	18,880		$	—	$	—		$	18,880
GSEs – residential MBS	—		6,663			—		—			6,663
GSEs – commercial MBS	—		248,621			—		—			248,621
Total trading securities	—		274,164			—		—			274,164
Available-for-sale securities:
Supranational institutions	—		469,242			—		—			469,242
Corporate bonds (2)	—		564,312			—		—			564,312
U.S. government-owned corporations	—		284,844			—		—			284,844
GSEs	—		2,782,421			—		—			2,782,421
U.S. government guaranteed – residential MBS	—		91,228			—		—			91,228
GSEs – residential MBS	—		984,808			—		—			984,808
GSEs – commercial MBS	—		103,344			—		—			103,344
Total available-for-sale securities	—		5,280,199			—		—			5,280,199
Derivative assets:
Interest-rate-exchange agreements	—		229,877			—		(213,484		)	16,393
Mortgage delivery commitments	—		128			—		—			128
Total derivative assets	—		230,005			—		(213,484		)	16,521
Total assets at fair value	$	—	$	5,784,368		$	—	$	(213,484	)	$	5,570,884
Liabilities:
Derivative liabilities
Interest-rate-exchange agreements	$	—	$	(1,098,547	)	$	—	$	193,243		$	(905,304	)
Total liabilities at fair value	$	—	$	(1,098,547	)	$	—	$	193,243		$	(905,304	)

_______________________

(1)These amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparty. Net cash collateral associated with derivatives, including accrued interest, as of December 31, 2011, totaled $20.2 million.

(2) These securities are corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. Government.

Fair Value on a Nonrecurring Basis

We measure certain held-to-maturity investment securities and REO at fair value on a nonrecurring basis, that is, they are not measured at fair value on an ongoing basis but are subject to fair-value adjustments only in certain circumstances (for example, upon recognizing an other-than-temporary impairment on a held-to-maturity security).

The following tables present the fair value of financial assets by level within the fair-value hierarchy which are recorded on a nonrecurring basis at September 30, 2012, and December 31, 2011 (dollars in thousands).

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	September 30, 2012
	Level 1		Level 2		Level 3		Total
Held-to-maturity securities:
Private-label residential MBS	$	—	$	—	$	19,403	$	19,403
REO	—		—		356		356
Total assets recorded at fair value on a nonrecurring basis	$	—	$	—	$	19,759	$	19,759

	December 31, 2011
	Level 1		Level 2		Level 3		Total
Held-to-maturity securities:
Private-label residential MBS	$	—	$	—	$	148,952	$	148,952
REO	—		—		905		905
Total assets recorded at fair value on a nonrecurring basis	$	—	$	—	$	149,857	$	149,857

Note 18 — Commitments and Contingencies

Joint and Several Liability. COs are backed by the financial resources of the FHLBanks. The Finance Agency has authority to require any FHLBank to repay all or a portion of the principal and interest on COs for which another FHLBank is the primary obligor. No FHLBank has ever been asked or required to repay the principal or interest on any CO on behalf of another FHLBank. We evaluate the financial condition of the other FHLBanks primarily based on known regulatory actions, publicly available financial information, and individual long-term credit-rating action as of each period-end presented. Based on this evaluation, as of September 30, 2012, and through the filing of this report, we do not believe that it is reasonably likely that we will be required to repay the principal or interest on any CO on behalf of another FHLBank.

We have considered applicable FASB guidance and determined it is not necessary to recognize a liability for the fair value of our joint and several liability for all of the COs. The joint and several obligation is mandated by Finance Agency regulations and is not the result of an arms-length transaction among the FHLBanks. The FHLBanks have no control over the amount of the guaranty or the determination of how each FHLBank would perform under the joint and several obligation. Because the FHLBanks are subject to the authority of the Finance Agency as it relates to decisions involving the allocation of the joint and several liability for the FHLBanks' COs, the FHLBanks' joint and several obligation is excluded from the initial recognition and measurement provisions. Accordingly, we have not recognized a liability for our joint and several obligation related to other FHLBanks' COs at September 30, 2012, and December 31, 2011. The par amounts of other FHLBanks' outstanding COs for which we are jointly and severally liable totaled approximately $634.6 billion and $647.7 billion at September 30, 2012, and December 31, 2011, respectively. See Note 12 — COs for additional information.

Off-Balance-Sheet Commitments

The following table sets forth our off-balance-sheet commitments as of September 30, 2012, and December 31, 2011 (dollars in thousands):

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	September 30, 2012						December 31, 2011
	Expire within one year		Expire after one year		Total		Expire within one year		Expire after one year		Total
Standby letters of credit outstanding (1)	$	848,249	$	377,808	$	1,226,057	$	832,140	$	402,932	$	1,235,072
Commitments for standby bond purchases	151,615		10,000		161,615		—		191,065		191,065
Commitments for unused lines of credit - advances (2)	1,304,244		—		1,304,244		1,287,084		—		1,287,084
Commitments to make additional advances	67,838		61,895		129,733		26,264		54,281		80,545
Commitments to invest in mortgage loans	41,506		—		41,506		17,734		—		17,734
Unsettled CO bonds, at par (3)	475,000		—		475,000		165,300		—		165,300

__________________________

(1) This row excludes commitments to issue standby letters of credit that expire within one year totaling $26.4 million and commitments that expire after one year totaling $900,000 as of September 30, 2012. Also excluded are commitments to issue standby letters of credit that expire within one year totaling $21.1 million at December 31, 2011.

(2) Commitments for unused line-of-credit advances are generally for periods of up to 12 months. Since many of these commitments are not expected to be drawn upon, the total commitment amount does not necessarily indicate future liquidity requirements.

(3) We had $265.0 million in unsettled CO bonds that were hedged with associated interest-rate swaps at September 30, 2012. We had $15.0 million in unsettled CO bonds that were hedged with associated interest-rate swaps at December 31, 2011.

Standby Letters of Credit. Standby letters of credit are executed with members or housing associates for a fee.A standby letter of credit is a financing arrangement between us and a member or housing associate pursuant to which we agree to fund the associated member's or housing associate's obligation to a third-party beneficiary should that member or housing associate fail to fund such obligation. If we are required to make payment for a beneficiary's draw, the payment amount is converted into a collateralized advance to the member or housing associate. The original terms of these standby letters of credit range fromfinal expiries in two months to 20 years. Our unearned fees for the value of the guarantees related to standby letters of credit are recorded in other liabilities and totaled $531,000 and $625,000 at September 30, 2012, and December 31, 2011, respectively.

We monitor the creditworthiness of our members and housing associates that have standby letter of credit agreements outstanding based on our evaluations of the financial condition of the member or housing associate. We review available financial data, which can include regulatory call reports filed by depository institution members, regulatory financial statements filed with the appropriate state insurance department by insurance company members, audited financial statements of housing associates, SEC filings, and rating-agency reports to ensure that potentially troubled members are identified as soon as possible. In addition, we have access to most members' regulatory examination reports. We analyze this information on a regular basis.

Standby letters of credit are fully collateralized at the time of issuance. Based on our credit analyses and collateral requirements, we have not deemed it necessary to record any additional liability on these commitments.

Standby Bond-Purchase Agreements. We enter into standby bond-purchase agreements with state housing authorities whereby we, for a fee, agree to purchase and hold the housing authority’s bonds until the designated remarketing agent can find an investor or the housing authority repurchases the bonds according to a schedule established by the standby bond-purchase agreement. Each standby bond-purchase agreement specifies the terms that would require us to purchase the bonds. The standby bond-purchase commitments we entered into expire between one and three years following the start of the commitment, currently no later than 2013. At each of September 30, 2012, and December 31, 2011, we had standby bond-purchase agreements with one state housing authority. During the nine months endedSeptember 30, 2012, and year ended December 31, 2011, we were not required to purchase any bonds under these agreements.

Commitments to Invest in Mortgage Loans. Commitments to invest in mortgage loans are generally for periods not to exceed 45 business days. Such commitments are recorded as derivatives at their fair values on the statement of condition.

Pledged Collateral. We execute new derivatives with counterparties with long-term ratings of single-A (or equivalent) or better by both S&P and Moody’s. All derivatives are subject to master-netting agreements which include bilateral-collateral agreements. Derivatives with counterparties rated lower than single-A (or equivalent) are permitted only if they reduce exposure to that counterparty. As of September 30, 2012, and December 31, 2011, we had pledged as collateral securities with a

50

carrying value, including accrued interest, of $791.1 million and $765.7 million, respectively, to counterparties that have credit-risk exposure to us related to derivatives. These amounts pledged as collateral were subject to contractual agreements whereby some counterparties had the right to sell or repledge the collateral.

Legal Proceedings. We are subject to various legal proceedings arising in the normal course of business from time to time. 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.

Note 19 — Transactions with Related Parties

We define related parties as those members whose capital stock holdings are in excess of 10 percent of total capital stock outstanding. The following table presents member holdings of 10 percent or more of total capital stock outstanding at September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012				December 31, 2011
	Capital Stock Outstanding		Percent of Total		Capital Stock Outstanding		Percent of Total
Bank of America Rhode Island, N.A. (1)	$	978,084	26.8	%	$	1,084,710	28.2	%
RBS Citizens N.A.	484,517		13.3		515,748		13.4

_________________________

(1) Capital stock outstanding at September 30, 2012, and December 31, 2011, includes $1.9 million and $2.2 million, respectively, held by CW Reinsurance Company, a subsidiary of Bank of America Corporation.

The following table presents outstanding advances to related parties and total accrued interest receivable from those advances as of September 30, 2012, and December 31, 2011 (dollars in thousands):

	Par Value of Advances		Percent of Total Par Value of Advances		Total Accrued Interest Receivable		Percent of Total Accrued Interest Receivable on Advances
As of September 30, 2012
RBS Citizens N.A.	$	3,520,085	15.1	%	$	646	1.6	%
Bank of America Rhode Island, N.A.	600,323		2.6		893		2.2
As of December 31, 2011
RBS Citizens N.A.	$	4,620,022	18.8	%	$	335	0.7	%
Bank of America Rhode Island, N.A.	96,261		0.4		454		1.0

The following table presents an analysis of advances activity with related parties for the nine months endedSeptember 30, 2012 (dollars in thousands):

			For the Nine Months Ended September 30, 2012
	Balance at December 31, 2011		Disbursements to Members		Payments from Members			Balance at September 30, 2012
RBS Citizens N.A.	$	4,620,022	$	12,250,570	$	(13,350,507	)	$	3,520,085
Bank of America Rhode Island, N.A.	96,261		1,511,042		(1,006,980		)	600,323

We recognized interest income on outstanding advances from the above members during the three and nine months endedSeptember 30, 2012, and 2011, as follows (dollars in thousands):

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	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
RBS Citizens N.A.	$	3,155	$	2,645	$	8,367	$	9,158
Bank of America Rhode Island, N.A.	2,137		3,175		5,114		11,142

The following table presents an analysis of outstanding derivatives with affiliates of related parties at September 30, 2012, and December 31, 2011 (dollars in thousands):

			September 30, 2012				December 31, 2011
Derivatives Counterparty	Affiliate Member	Primary Relationship	Notional Amount		Percent of Total Derivatives (1)		Notional Amount		Percent of Total Derivatives (1)
Bank of America, N.A.	Bank of America Rhode Island, N.A.	Dealer	$	1,041,150	5.9	%	$	973,750	4.7	%
Royal Bank of Scotland, PLC	RBS Citizens, N.A.	Dealer	95,000		0.5		96,300		0.5

_________________________

(1)The percent of total derivatives outstanding is based on the stated notional amount of all derivatives outstanding.

Note 20 — Transactions with Other FHLBanks

We may occasionally enter into transactions with other FHLBanks. These transactions are summarized below.

Overnight Funds. We may borrow or lend unsecured overnight funds from or to other FHLBanks. All such transactions are at current market rates. Interest income and interest expense related to these transactions with other FHLBanks are included within other interest income and interest expense from other borrowings in the statement of operations.

MPF Mortgage Loans. We pay a transaction-services fee to the FHLBank of Chicago for our participation in the MPF program. This fee is assessed monthly, and is based upon the amount of mortgage loans which we invested in after January 1, 2004, and which remain outstanding on our statement of condition. We recorded $347,000 and $285,000 in MPF transaction-services fee expense to the FHLBank of Chicago during the three months ended September 30, 2012 and September 30, 2011, respectively, which has been recorded in the statement of operations as other expense. We recorded $966,000 and $843,000 in MPF transaction-services fee expense to the FHLBank of Chicago during the nine months endedSeptember 30, 2012, and September 30, 2011, respectively.

COs. From time to time, one FHLBank may transfer to another FHLBank the COs for which the transferring FHLBank was originally the primary obligor but upon transfer the assuming FHLBank becomes the primary obligor. During the nine months endedSeptember 30, 2012, we assumed debt obligations with a par amount of $112.0 million and a fair value of approximately $130.3 million on the day they were assumed, which had been the obligations of another FHLBank. There were no transfers of COs between us and other FHLBanks during the nine months endedSeptember 30, 2011.

Note 21 — Subsequent Events

On October 18, 2012, the board of directors declared a cash dividend at an annualized rate of 0.48 percent based on capital stock balances outstanding during the third quarter of 2012. The dividend, including dividends on mandatorily redeemable capital stock, amounted to $4.4 million and was paid on November 2, 2012.

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

Forward-Looking Statements

This report includes statements describing anticipated developments, projections, estimates, or future predictions of ours that are “forward-looking statements.” These statements may use forward-looking terminology such as, but not limited to, “anticipates,” “believes,” “expects,” “plans,” “intends,” “may,” “could,” “estimates,” “assumes,” “should,” “will,” “likely,” or their negatives or other variations on these terms. We caution that, by their nature, forward-looking statements are subject to a number of risks or uncertainties, including the risk factors set forth in Item 1A — Risk Factors in the 2011 Annual Report and Part II — Item 1A — Risk Factors of this quarterly report, and the risks set forth below. Accordingly, we caution that actual results could differ materially from those expressed or implied in these forward-looking statements or could impact the extent to which a particular objective, projection, estimate, or prediction is realized. As a result, you are cautioned not to place undue reliance on such statements. We do not undertake to update any forward-looking statement herein or that may be made from time to time on our behalf.

Forward-looking statements in this report may include, among others, our expectations for:

• income, retained earnings, and dividend payouts;

• repurchases of our stock held in excess of the owner's total stock investment requirement (excess stock);

• credit losses on advances and investments in mortgage loans and ABS, particularly private-label MBS;

• balance-sheet changes and components thereof, such as changes in advances balances and the size of our portfolio of investments in mortgage loans;

• our retained earnings target; and

• the interest-rate environment in which we do business.

Actual results may differ from forward-looking statements for many reasons, including, but not limited to:

• changes in interest rates, the rate of inflation (or deflation), housing prices, employment rates, and the general economy, including changes resulting from changes in U.S. fiscal policy, the European sovereign debt crisis, and/or the downgrade of the U.S. federal government;

• changes in the size of the residential mortgage market;

• changes in demand for our advances and other products resulting from changes in members' deposit flows and credit demands or otherwise;

• the willingness of our members to do business with us despite limited repurchases of excess stock and modest dividend payments;

• changes in the financial health of our members;

• insolvencies of our members;

• increases in borrower defaults on mortgage loans;

• deterioration in the credit performance of our private-label MBS portfolio beyond forecasted assumptions concerning loan default rates, loss severities, and prepayment speeds resulting in the realization of additional other-than-temporary impairment charges;

• deterioration in the credit performance of our investments in mortgage loans and increases in loss severities from those investments;

• an increase in advance prepayments as a result of changes in interest rates or other factors;

• the volatility of market prices, rates, and indices that could affect the value of collateral we hold as security for obligations of our members and counterparties to interest-rate-exchange agreements and similar agreements;

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• issues and events across the FHLBank System and in the political arena that may lead to regulatory, judicial, or other developments may affect the marketability of the COs, our financial obligations with respect to COs, our ability to access the capital markets, our members, the manner in which we operate, or the organization and structure of the FHLBank System;

• competitive forces including, without limitation, other sources of funding available to our members, other entities borrowing funds in the capital markets, and the ability to attract and retain skilled employees;

• the pace of technological change and our ability to develop and support technology and information systems sufficient to manage the risks of our business effectively;

• the loss of large members through mergers and similar activities;

• changes in investor demand for COs and/or the terms of interest-rate-exchange-agreements and similar agreements;

• the timing and volume of market activity;

• the volatility of reported results due to changes in the fair value of certain assets and liabilities, including, but not limited to, private-label MBS;

• the ability to introduce new (or adequately adapt current) products and services and successfully manage the risks associated with those products and services, including new types of collateral used to secure advances;

• the availability of derivative financial instruments of the types and in the quantities needed for risk-management purposes from acceptable counterparties;

• the realization of losses arising from litigation filed against us or one or more of the other FHLBanks;

• the realization of losses arising from our joint and several liability on COs;

• significant business disruptions resulting from natural or other disasters, acts of war, or terrorism; and

• the effect of new accounting standards, including the development of supporting systems.

These risk factors are not exhaustive. We operate in a changing economic and regulatory environment, and new risk factors will emerge from time to time. We cannot predict such new risk factors nor can we assess the impact, if any, of such new risk factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those implied by any forward-looking statements.

The Management's Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with our interim financial statements and notes, which begin on page three, and the 2011 Annual Report.

EXECUTIVE SUMMARY

Our financial condition continued to strengthen during the quarter ended September 30, 2012, as we recognized net income of $50.8 million for the three months ended September 30, 2012, versus $50.0 million for the same period in 2011. Credit losses from the other-than-temporary impairment of investments in private-label MBS totaled $1.1 million for the three months ended September 30, 2012, compared with such credit losses of $7.2 million for the comparable period of 2011. Additionally:

• retained earnings increased from $398.1 million at December 31, 2011, to $538.2 million at September 30, 2012;

• accumulated other comprehensive loss related to the noncredit portion of other-than-temporary impairment losses on held-to-maturity securities improved from an accumulated other comprehensive loss of $451.0 million at December 31, 2011, to an accumulated other comprehensive loss of $403.5 million at September 30, 2012;

• we continue to be in compliance with all regulatory capital requirements, as of September 30, 2012; and

• on October 18, 2012, our board of directors declared a cash dividend that was equivalent to an annual yield of 0.48 percent.

We note that retained earnings now exceed accumulated other comprehensive loss for the first time since the third quarter of 2008, and we believe this is an important milestone as our financial condition continues to improve. Nonetheless, we continue to face certain challenges, the foremost of which arises from the continuing, prolonged low-interest rate environment. We continue to believe that this factor is likely to negatively impact future earnings, absent unpredictable events such as

54

prepayment fee income, and we remain focused on achieving our retained earnings target through the payment of modest dividends.

• Investments in Private-Label MBS. Although the amortized cost of our total investments in private-label MBS and ABS backed by home equity loans has fallen to $1.8 billion at September 30, 2012, compared with $6.4 billion at September 30, 2007, additional losses from that portfolio are possible. We have determined that 10 of our private-label MBS, representing an aggregated par value of $200.5 million, incurred additional other-than-temporary impairment credit losses of $1.1 million for the three months ended September 30, 2012. We continue to update our modeling assumptions to reflect current developments impacting the loan performance of the mortgage loans that back our investments in these securities, particularly Alt-A mortgage loans originated from 2005 to 2007 that comprise a significant portion of the loans backing these securities. Such developments include continuing elevated unemployment rates and generally slow economic growth, high levels of foreclosures and troubled real estate loans, slow housing price recovery, and limited refinancing opportunities for many borrowers, especially those whose houses are now worth less than the balance of their mortgages.

We also update our modeling assumptions based on non-economic factors that impact or could impact the performance of these investments, including certain federal programs (and proposed programs) intended to assist and/or protect borrowers, and related developments that could result in further losses. We continue to monitor these and related developments, including litigation involving private-label MBS, which could result in loss severities beyond current expectations due to disruptions of cash flows from impacted securities and further depression in real estate prices.

• Advances Balances. The outstanding par balance of advances decreased from $24.6 billion at December 31, 2011, to $23.3 billion at September 30, 2012. Demand for advances continues to be muted, as our members continue to experience high levels of deposits. Generally, deposits serve as liquidity alternatives to advances.

The trend in advances balances is illustrated by the following graph:

• Low-Interest Rate Environment and U.S. Fiscal Policy. We continue to operate in a prolonged, historically low-interest rate environment for short- and long-term financial instruments. We expect the current historically low-interest rate environment to persist based on actions by the Federal Reserve to maintain low interest rates, including affecting a third round of its quantitative easing program, combined with other potential threats that could slow or reverse economic growth, such as the European sovereign debt crisis, which has raised concerns that a Eurozone recession could slow the U.S. economy. These factors are discussed in greater detail under Item 7 —Management's Discussion and Analysis of Financial Condition and Results of Operations —Executive Summary — Continuing and Prolonged Low-Interest Rate Environment in the 2011 Annual Report. In addition, some economists predict the U.S. economy could fall into recession if the U.S. Federal Government fails to achieve a plan to avoid the “fiscal cliff,” which refers to certain tax increases and automatic spending cuts that are scheduled to become effective at the end of 2012. Further, Moody's has warned that it may

55

downgrade the U.S. Federal Government's rating if the federal debt is not stabilized.

The European sovereign debt crisis, failure to avoid the fiscal cliff, and/or a downgrade of the U.S. Federal Government's rating could result in further continuation of the low-interest rate environment. The Federal Reserve's Federal Open Market Committee has stated that it anticipates that exceptionally low levels for the federal funds rate are likely to be warranted at least through mid-2015. A prolonged low-interest rate environment continues to adversely impact us in various ways such as members experiencing sufficient or excess liquidity through deposits as investors face fewer attractive investment alternatives; members significantly increasing their reliance on short-term advances that typically have lower market yields for us than longer-term advances; lower market yields on investments (as we continue to experience), including money market investments in which our capital is deployed; and faster prepayments on our mortgage-related assets, with resultant reinvestment risk. The most recent round of quantitative easing by the Federal Reserve, announced in September 2012, is directed at purchasing agency MBS, reducing yields on these securities to levels that are generally not profitable for us as an investor, and as a result, balances in our investment portfolios are likely to decline in the near term. Accordingly, our net income and, in turn, our financial condition and results of operations, are likely to be adversely impacted by a prolonged low-interest rate environment.

The following chart demonstrates the persistent low-interest rate environment.

Other significant trends and developments include the following:

• Strong Net Interest Margin. Despite the historically low-interest rate environment, we continue to achieve a favorable net interest margin. Net interest margin is expressed as the percentage of net-interest income to average earning assets. Net interest margin for the three months ended September 30, 2012, was 0.61 percent, a two basis point decrease from net interest margin for the three months ended September 30, 2011. Prepayment-fee income was an important contributor to net interest margin for the three months ended September 30, 2012, as demonstrated by the tables captioned “Net Interest Spread and Margin without Prepayment-Fee Income” under — Results of Operations — Rate and Volume Analysis. These prepayment fees represent a substantial contribution to our net income that should not be counted on to recur every year. Further, the increase in net-interest margin was achieved despite the continuing low-interest rate environment due in part to continued low average funding costs. Demand for COs remained strong and funding costs remained low throughout the first nine months of 2012. Other factors behind the improvement in net interest margin include an increase in yields on certain previously other-than-temporarily impaired private-label MBS for which a significant improvement in cash flows has been projected and lower than expected prepayment activity on fixed-rate mortgage-related assets.

Notwithstanding our success in achieving strong net interest margin and strong net interest spread for the quarter, we expect these measurements to modestly decline in the remaining quarter of 2012 and to continue to decline in 2013 based

56

on the sustained low-interest rate environment noted above combined with the fact that we face limited opportunities to redeem and refinance our debt, while our seasoned investments in mortgage loans (including fixed-rate agency MBS) will continue to amortize.

• Legislative and Regulatory Developments. We continue to operate in a legislative and regulatory environment undergoing profound change with additional changes occurring during the period covered by this report. These changes are likely to have multiple important impacts on us, as discussed under — Legislative and Regulatory Developments.

• Key Management Changes. On July 17, 2012, Michael C. Clifton joined us as senior vice president and chief information officer, and as a member of our senior management team. Most recently, Mr. Clifton was vice president and chief information officer with The Hanover Insurance Group, where he had been employed since 2003 in progressively expansive roles. Mr. Clifton is a graduate of the University of Massachusetts Lowell with a B.S. in Industrial Engineering.

SELECTED FINANCIAL DATA

The following financial highlights for the statement of condition for December 31, 2011, have been derived from our audited financial statements. Financial highlights for the quarter-ends have been derived from our unaudited financial statements. 

SELECTED FINANCIAL DATA STATEMENT OF CONDITION (dollars in thousands)
	September 30, 2012			June 30, 2012			March 31, 2012			December 31, 2011			September 30, 2011
Statement of Condition Data at Quarter End
Total assets	$	45,742,535		$	49,763,227		$	46,911,899		$	49,968,337		$	48,574,433
Investments (1)	17,948,073			19,363,944			18,589,831			21,379,548			19,916,085
Advances	23,915,687			26,456,739			24,891,964			25,194,898			25,024,689
Mortgage loans held for portfolio (2)	3,431,534			3,311,457			3,166,457			3,109,223			3,128,725
Deposits	685,328			668,836			760,374			654,246			740,946
Consolidated obligations
Bonds	28,238,899			27,622,744			28,533,735			29,879,460			32,446,525
Discount notes	11,993,572			16,610,160			12,834,056			14,651,793			10,673,491
Total consolidated obligations	40,232,471			44,232,904			41,367,791			44,531,253			43,120,016
Mandatorily redeemable capital stock	215,863			215,863			214,859			227,429			227,429
Class B capital stock outstanding - putable (3)	3,433,016			3,420,870			3,402,556			3,625,348			3,583,749
Unrestricted retained earnings	484,574			448,330			408,154			375,158			326,099
Restricted retained earnings	53,660			43,496			32,299			22,939			9,997
Total retained earnings	538,234			491,826			440,453			398,097			336,096
Accumulated other comprehensive loss	(504,674		)	(528,442		)	(519,832		)	(534,411		)	(516,717		)
Total capital	3,466,576			3,384,254			3,323,177			3,489,034			3,403,128
Other Information
Total regulatory capital ratio (4)	9.2		%	8.3		%	8.7		%	8.5		%	8.5		%

_________________________

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

(2) The allowance for credit losses amounted to $5.5 million, $6.1 million, $6.6 million, $7.8 million, and $7.2 million, as of September 30, 2012, June 30, 2012, March 31, 2012, December 31, 2011, and September 30, 2011, respectively.

(3) Capital stock is putable at the option of a member.

(4)Total regulatory capital ratio is capital stock (including mandatorily redeemable capital stock) plus retained earnings as a percentage of total assets. See — Liquidity and Capital Resources — Capital regarding our regulatory capital ratios.

57

SELECTED FINANCIAL DATA RESULTS OF OPERATIONS AND OTHER INFORMATION (dollars in thousands)
	For the Three Months Ended
	September 30, 2012			June 30, 2012			March 31, 2012			December 31, 2011			September 30, 2011
Results of Operations
Net interest income	$	72,801		$	89,552		$	68,342		$	82,026		$	80,410
(Reduction of) provision for credit losses	(523		)	(383		)	(1,151		)	627			—
Net impairment losses on held-to-maturity securities recognized in income	(1,092		)	(1,492		)	(2,960		)	(3,479		)	(7,210		)
Other (loss) income	(698		)	(10,531		)	1,245			10,001			(1,659		)
Other expense	15,039			15,671			15,746			15,994			15,982
AHP assessments	5,675			6,253			5,232			7,220			5,573
Net income	$	50,820		$	55,988		$	46,800		$	64,707		$	49,986
Other Information
Dividends declared	$	4,413		$	4,615		$	4,444		$	2,706		$	2,410
Dividend payout ratio	8.68		%	8.24		%	9.49		%	4.18		%	4.82		%
Weighted average dividend rate (1)	0.52			0.52			0.49			0.30			0.27
Return on average equity (2)	5.92			6.70			5.44			7.43			5.84
Return on average assets	0.43			0.49			0.38			0.51			0.39
Net interest margin (3)	0.61			0.78			0.56			0.65			0.63
Average equity to average assets	7.19			7.25			7.06			6.88			6.64

___________________________

(1) Weighted-average dividend rate is dividend amount declared divided by the average daily balance of capital stock.

(2) Return on average equity is net income divided by the total of the average daily balance of outstanding Class B capital stock, accumulated other comprehensive loss, and retained earnings.

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

RESULTS OF OPERATIONS

Third Quarter of 2012 Compared with Third Quarter of 2011

For the three months ended September 30, 2012, and 2011, we recognized net income of $50.8 million and $50.0 million, respectively. This $834,000increase was driven by a reduction in net losses on derivatives and hedging activities of $15.4 million, a decrease of $6.1 million in other-than-temporary impairment losses of certain private-label MBS, and a reduction of other expense of $943,000. These increases to net income were offset by a decline in the net unrealized gains on trading securities of $9.0 million, a $7.6 million decrease in net interest income, and a $5.0 million expense for the early retirement of debt in the third quarter of 2012.

Nine Months Ended September 30, 2012, Compared with Nine Months Ended September 30, 2011

For the nine months endedSeptember 30, 2012, and 2011, we recognized net income of $153.6 million and $94.9 million, respectively. This $58.7 millionincrease was driven by a decrease of $68.0 million in other-than-temporary impairment losses of certain private-label MBS, a reduction in net losses on derivatives and hedging activities of $15.0 million, a $6.7 millionincrease in net interest income, a decrease in assessments of $4.5 million due to the fulfillment of the REFCorp obligation, and a decline of $2.6 million in other expense. The increases to net income were partially offset by a loss on early extinguishment of debt of $17.0 million, a decline of $12.8 million in realized gains on sales of available-for-sale securities, and a decline in the net unrealized gains on trading securities of $9.3 million.

Net Interest Income

Third Quarter of 2012 Compared with Third Quarter of 2011

58

Net interest income for the three months ended September 30, 2012 decreased $7.6 million from $80.4 million in the third quarter of 2011 to $72.8 million in the third quarter of 2012. This decrease was primarily attributable to the decline in average earning assets from $50.9 billion for the third quarter of 2011, to $47.1 billion for the third quarter of 2012. This decline in average earning assets was driven by a $4.2 billion drop in average investments balances partially offset by an increase of $249.6 million in average advances balances. Offsetting the effects of the decline in average earning assets was a $2.1 millionincrease in prepayment fee income.

Net interest margin for the three months ended September 30, 2012, in comparison with the same period in 2011, decreased to 61 basis points from 63 basis points, and net interest spread decreased to 53 basis points from 55 basis points for the same period in 2011. Net interest spread is the difference between the yields on interest-earning assets and interest-bearing liabilities.

Contributing to the decrease in net interest spread was a decrease in average earning assets, which declined by $3.8 billion. Also contributing to the decrease in net interest spread was the fact that the yield on interest earning assets increased by two basis points to 1.51 percent while the average cost of interest-bearing liabilities increased by four basis points to 0.98 percent.

Nine Months Ended September 30, 2012, Compared with Nine Months Ended September 30, 2011

Net interest income for the nine months endedSeptember 30, 2012, was $230.7 million, compared with $224.0 million for the same period in 2011. This increase was primarily attributable to the $22.9 millionincrease in prepayment-fee income, which partly contributed to an increase of 11 basis points in the yield on interest earning assets to 1.56 percent. In addition, the average cost of interest-bearing liabilities increased three basis points to 1.00 percent.

Net interest margin for the nine months endedSeptember 30, 2012, increased to 65 basis points compared with 56 basis points in the same period in 2011, and net interest spread increased to 56 basis points compared with 48 basis points in the same period in 2011. Partially offsetting the increase in net interest spread was a decrease in average earning assets, which declined by $6.0 billion from $53.3 billion for the nine months endedSeptember 30, 2011, to $47.3 billion for the nine months endedSeptember 30, 2012.

The following tables present major categories of average balances, related interest income/expense, and average yields for interest-earning assets and interest-bearing liabilities. Our primary source of earnings is net interest income, which is the interest earned on advances, mortgage loans, and investments less interest paid on COs, deposits, and other sources of funds.

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Net Interest Spread and Margin (dollars in thousands)
	For the Three Months Ended September 30,
	2012							2011
	Average Balance			Interest Income / Expense		Average Yield (1)		Average Balance			Interest Income / Expense		Average Yield (1)
Assets
Advances	$	25,044,543		$	84,425	1.34	%	$	24,794,945		$	89,229	1.43	%
Interest-bearing deposits	548			1		1.13		250			—		0.14
Securities purchased under agreements to resell	5,293,478			2,455		0.18		1,673,913			502		0.12
Federal funds sold	1,241,522			463		0.15		7,075,380			2,211		0.12
Investment securities(2)	12,170,446			56,824		1.86		14,201,298			61,861		1.73
Mortgage loans	3,376,986			34,214		4.03		3,133,432			37,267		4.72
Other earning assets	2,446			1		0.14		1,121			1		0.07
Total interest-earning assets	47,129,969			178,383		1.51	%	50,880,339			191,071		1.49	%
Other non-interest-earning assets	480,852							496,829
Fair-value adjustments on investment securities	(96,817		)					(257,560		)
Total assets	$	47,514,004		$	178,383	1.49	%	$	51,119,608		$	191,071	1.48	%
Liabilities and capital
Consolidated obligations
Discount notes	$	13,599,121		$	3,726	0.11	%	$	12,261,313		$	1,546	0.05	%
Bonds	28,272,767			101,584		1.43		33,390,223			108,896		1.29
Deposits	702,319			11		0.01		750,855			42		0.02
Mandatorily redeemable capital stock	215,862			260		0.48		227,429			177		0.31
Other borrowings	1,755			1		0.23		924			—		0.09
Total interest-bearing liabilities	42,791,824			105,582		0.98	%	46,630,744			110,661		0.94	%
Other non-interest-bearing liabilities	1,307,329							1,093,026
Total capital	3,414,851							3,395,838
Total liabilities and capital	$	47,514,004		$	105,582	0.88	%	$	51,119,608		$	110,661	0.86	%
Net interest income				$	72,801						$	80,410
Net interest spread						0.53	%						0.55	%
Net interest margin						0.61	%						0.63	%

_________________________

(1) Yields are annualized.

(2)The average balances of held-to-maturity securities and available-for-sale securities 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 other-than-temporary impairment reflected in accumulated other comprehensive loss.    

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Net Interest Spread and Margin (dollars in thousands)
	For the Nine Months Ended September 30,
	2012							2011
	Average Balance			Interest Income / Expense		Average Yield (1)		Average Balance			Interest Income / Expense		Average Yield (1)
Assets
Advances	$	24,540,660		$	269,385	1.47	%	$	25,795,091		$	270,063	1.40	%
Interest-bearing deposits	360			2		0.91		216			1		0.33
Securities purchased under agreements to resell	5,850,000			7,069		0.16		1,436,996			1,447		0.13
Federal funds sold	1,530,777			1,491		0.13		5,999,905			5,969		0.13
Investment securities(2)	12,124,453			170,263		1.88		16,897,493			187,526		1.48
Mortgage loans	3,248,559			103,527		4.26		3,160,936			113,456		4.80
Other earning assets	821			1		0.14		1,385			1		0.10
Total interest-earning assets	47,295,630			551,738		1.56	%	53,292,022			578,463		1.45	%
Other non-interest-earning assets	489,056							476,824
Fair-value adjustments on investment securities	(134,758		)					(357,326		)
Total assets	$	47,649,928		$	551,738	1.55	%	$	53,411,520		$	578,463	1.45	%
Liabilities and capital
Consolidated obligations
Discount notes	$	13,235,691		$	8,222	0.08	%	$	13,429,658		$	8,808	0.09	%
Bonds	28,766,309			311,943		1.45		34,643,773			345,012		1.33
Deposits	739,617			42		0.01		766,785			244		0.04
Mandatorily redeemable capital stock	218,388			834		0.51		174,884			446		0.34
Other borrowings	1,979			2		0.13		2,806			3		0.14
Total interest-bearing liabilities	42,961,984			321,043		1.00	%	49,017,906			354,513		0.97	%
Other non-interest-bearing liabilities	1,274,886							1,048,923
Total capital	3,413,058							3,344,691
Total liabilities and capital	$	47,649,928		$	321,043	0.90	%	$	53,411,520		$	354,513	0.89	%
Net interest income				$	230,695						$	223,950
Net interest spread						0.56	%						0.48	%
Net interest margin						0.65	%						0.56	%

_________________________

(1) Yields are annualized.

(2)The average balances of held-to-maturity securities and available-for-sale securities 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 other-than-temporary impairment reflected in accumulated other comprehensive loss.    

Rate and Volume Analysis

Changes in both average balances (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 for the three and nine months endedSeptember 30, 2012, and 2011. Changes in interest income and interest expense that are not identifiable as either volume-related or rate-related, but are equally attributable to both volume and rate changes, have been allocated to the volume and rate categories based upon the proportion of the absolute value of the volume and rate changes.

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Rate and Volume Analysis (dollars in thousands)
	For the Three Months Ended September 30, 2012 vs. September 30, 2011									For the Nine Months Ended September 30, 2012 vs. September 30, 2011
	Increase (Decrease) due to									Increase (Decrease) due to
	Volume			Rate			Total			Volume			Rate			Total
Interest income
Advances	$	890		$	(5,694	)	$	(4,804	)	$	(13,452	)	$	12,774		$	(678	)
Interest-bearing deposits	—			—			—			1			1			2
Securities purchased under agreements to resell	1,559			394			1,953			5,278			344			5,622
Federal funds sold	(2,109		)	361			(1,748		)	(4,356		)	(122		)	(4,478		)
Investment securities	(9,269		)	4,232			(5,037		)	(60,218		)	42,955			(17,263		)
Mortgage loans	2,749			(5,802		)	(3,053		)	3,075			(13,004		)	(9,929		)
Other earning assets	—			—			—			(1		)	1			—
Total interest income	(6,180		)	(6,509		)	(12,689		)	(69,673		)	42,949			(26,724		)
Interest expense
Consolidated obligations
Discount notes	186			1,994			2,180			(126		)	(460		)	(586		)
Bonds	(17,710		)	10,398			(7,312		)	(61,947		)	28,878			(33,069		)
Deposits	(3		)	(28		)	(31		)	(8		)	(194		)	(202		)
Mandatorily redeemable capital stock	(9		)	92			83			129			259			388
Other borrowings	—			—			—			(1		)	—			(1		)
Total interest expense	(17,536		)	12,456			(5,080		)	(61,953		)	28,483			(33,470		)
Change in net interest income	$	11,356		$	(18,965	)	$	(7,609	)	$	(7,720	)	$	14,466		$	6,746

The average balance of total advances decreased $1.3 billion, or 4.9 percent, for the nine months endedSeptember 30, 2012, compared with the same period in 2011. The trend of muted demand for advances is discussed under — Executive Summary — Advances Balances. The following table summarizes average balances of advances outstanding during the nine months endedSeptember 30, 2012 and 2011, by product type.

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Average Balance of Advances Outstanding by Product Type (dollars in thousands)
	For the Nine Months Ended September 30,
	2012		2011
Fixed-rate advances—par value
Long-term	$	9,907,681	$	11,324,083
Short-term	4,514,645		2,264,447
Putable	4,197,669		5,184,843
Amortizing	1,145,053		1,592,077
Overnight	357,762		406,037
Expander	23,759		10,000
Callable	16,186		6,518
Fixed-rate plus cap	10,000		3,480
	20,172,755		20,791,485
Variable-rate indexed advances—par value
Simple variable	3,692,996		4,373,293
Putable	63,586		—
Overnight	10,095		9,673
Floating rate advances with embedded caps and / or floors	10,000		11,151
	3,776,677		4,394,117
Total average par value	23,949,432		25,185,602
Net premiums and (discounts)	17,434		7,470
Market value of embedded derivatives	107		—
Hedging adjustments	573,687		602,019
Total average balance of advances	$	24,540,660	$	25,795,091

Putable advances that are classified as fixed-rate advances in the table above are typically hedged with interest-rate-exchange agreements in which a short-term rate is received, typically three-month LIBOR. In addition, approximately 23.7 percent of average long-term fixed-rate advances were similarly hedged with interest-rate swaps. Therefore, a significant portion of our advances, including overnight advances, short-term fixed-rate advances, fixed-rate putable advances, certain fixed-rate bullet advances, and variable-rate advances, either earn a short-term interest rate or are swapped to a short-term index, resulting in yields that closely follow short-term market interest-rate trends. The average balance of all such advances totaled $15.2 billion for the nine months endedSeptember 30, 2012, representing 61.9 percent of the total average balance of advances outstanding during the nine months endedSeptember 30, 2012. The average balance of all such advances totaled $15.1 billion for the nine months endedSeptember 30, 2011, representing 60.1 percent of the total average balance of advances outstanding during the nine months endedSeptember 30, 2011.

For the nine months endedSeptember 30, 2012 and 2011, net prepayment fees on advances were $44.3 million and $20.4 million, respectively. For the nine months endedSeptember 30, 2012 and 2011, prepayment fees on investments were $341,000 and $1.4 million, respectively. Prepayment-fee income is unpredictable and inconsistent from period to period, occurring only when advances and investments are prepaid prior to the scheduled maturity or repricing dates.

Because prepayment-fee income recognized during these periods does not necessarily represent a trend that will continue in future periods, and due to the fact that prepayment-fee income represents a one-time fee that is generally recognized in the period in which the corresponding advance or investment security is prepaid, we believe it is important to review the results of net interest spread and net interest margin excluding the impact of prepayment-fee income. These results are presented in the following table.

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Net Interest Spread and Margin without Prepayment-Fee Income (dollars in thousands)
	For the Three Months Ended September 30,								For the Nine Months Ended September 30,
	2012				2011				2012				2011
	Interest Income		Average Yield		Interest Income		Average Yield		Interest Income		Average Yield		Interest Income		Average Yield
Advances	$	72,551	1.15	%	$	80,163	1.28	%	$	225,037	1.22	%	$	249,670	1.29	%
Investment securities	56,685		1.85		61,055		1.71		169,922		1.87		186,171		1.47
Total interest-earning assets	166,370		1.40		181,199		1.41		507,049		1.43		556,715		1.40
Net interest income	60,788				70,538				186,006				202,202
Net interest spread			0.42	%			0.47	%			0.43	%			0.43	%
Net interest margin			0.51	%			0.55	%			0.53	%			0.51	%

Average short-term money-market investments, consisting of interest-bearing deposits, securities purchased under agreements to resell, and federal funds sold, decreased $56.0 million, or 0.8 percent, for the nine months endedSeptember 30, 2012, compared with the same period in 2011. The yield earned on short-term money-market investments is highly correlated to short-term market interest rates. These investments are used for liquidity management and to manage our leverage ratio in response to fluctuations in other asset balances. For the nine months endedSeptember 30, 2012, average balances of federal funds sold decreased $4.5 billion and average balances of securities purchased under agreements to resell increased $4.4 billion in comparison to the nine months endedSeptember 30, 2011.

Average investment-securities balances decreased $4.8 billion, or 28.2 percent for the nine months endedSeptember 30, 2012, compared with the same period in 2011, which occurred in the following investment categories:

• $3.5 billion decline in certificates of deposit;

• $547.3 million decline in agency and supranational banks;

• $500.0 million decline in MBS; and

• $186.7 million decline in corporate bonds.

The average aggregate balance of our investments in mortgage loans for the nine months endedSeptember 30, 2012, was $87.6 million higher than the average aggregate balance of these investments for the nine months endedSeptember 30, 2011, representing an increase of 2.8 percent.

Average CO balances decreased $6.1 billion, or 12.6 percent, for the nine months endedSeptember 30, 2012, compared with the same period in 2011, resulting from our reduced funding needs principally due to the decline in our investments and member demand for advances. This overall decline consisted of a decrease of $194.0 million in CO discount notes and a decrease of $5.9 billion in CO bonds.

The average balance of term CO discount notes increased $1.6 billion and overnight CO discount notes decreased $1.8 billion for the nine months endedSeptember 30, 2012, in comparison with the same period in 2011. The average balance of CO discount notes represented approximately 31.5 percent of total average COs during the nine months endedSeptember 30, 2012, as compared with 27.9 percent of total average COs during the nine months endedSeptember 30, 2011. The average balance of bonds represented 68.5 percent and 72.1 percent of total average COs outstanding during the nine months endedSeptember 30, 2012 and 2011, respectively.

Impact of Derivatives and Hedging Activities

Net interest income includes interest accrued on interest-rate-exchange agreements that are associated with advances, investments, deposits, and debt instruments that qualify for hedge accounting. We generally use derivative instruments that qualify for hedge accounting as interest-rate-risk-management tools. These derivatives serve to stabilize net interest income and

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net interest margin when interest rates fluctuate. Accordingly, the impact of derivatives on net interest income and net interest margin should be viewed in the overall context of our risk-management strategy. The following tables show the net effect of derivatives and hedging activities on net interest income, net gains (losses) on derivatives and hedging activities, and net unrealized gains (losses) on trading securities for the three and nine months endedSeptember 30, 2012 and 2011 (dollars in thousands).

	For the Three Months Ended September 30, 2012
Net Effect of Derivatives and Hedging Activities	Advances			Investments			Mortgage Loans			Deposits		CO Bonds			Total
Net interest income
Amortization/accretion of hedging activities in net interest income (1)	$	(2,683	)	$	—		$	(60	)	$	—	$	6,160		$	3,417
Net interest settlements included in net interest income (2)	(45,869		)	(10,256		)	—			385		21,049			(34,691		)
Total effect on net interest income	(48,552		)	(10,256		)	(60		)	385		27,209			(31,274		)
Net gains (losses) on derivatives and hedging activities
Gains (losses) on fair-value hedges	259			462			—			—		(124		)	597
Gains (losses) on derivatives not receiving hedge accounting	545			(4,376		)	—			—		381			(3,450		)
Other	—			—			767			—		—			767
Net gains (losses) on derivatives and hedging activities	804			(3,914		)	767			—		257			(2,086		)
Subtotal	(47,748		)	(14,170		)	707			385		27,466			(33,360		)
Net gains on trading securities	—			4,669			—			—		—			4,669
Total net effect of derivatives and hedging activities	$	(47,748	)	$	(9,501	)	$	707		$	385	$	27,466		$	(28,691	)

_____________________

(1) Represents the amortization/accretion of hedging fair-value adjustments for closed hedge positions.

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

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	For the Three Months Ended September 30, 2011
Net Effect of Derivatives and Hedging Activities	Advances			Investments			Mortgage Loans		Deposits		CO Bonds		Total
Net interest income
Amortization / accretion of hedging activities in net interest income (1)	$	(4,210	)	$	—		$	38	$	—	$	3,691	$	(481	)
Net interest settlements included in net interest income (2)	(68,212		)	(11,724		)	—		397		37,975		(41,564		)
Total net interest income	(72,422		)	(11,724		)	38		397		41,666		(42,045		)
Net gains (losses) on derivatives and hedging activities
(Losses) gains on fair-value hedges	(45		)	(426		)	—		—		916		445
Gains (losses) on derivatives not receiving hedge accounting	1,130			(20,229		)	—		—		—		(19,099		)
Other	—			—			1,180		—		—		1,180
Net gains (losses) on derivatives and hedging activities	1,085			(20,655		)	1,180		—		916		(17,474		)
Subtotal	(71,337		)	(32,379		)	1,218		397		42,582		(59,519		)
Net gains on trading securities (3)	—			13,552			—		—		—		13,552
Total net effect of derivatives and hedging activities	$	(71,337	)	$	(18,827	)	$	1,218	$	397	$	42,582	$	(45,967	)

_____________________

(1) Represents the amortization/accretion of hedging fair-value adjustments for closed hedge positions.

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

(3) Includes only those gains or losses on trading securities that have an economic derivative assigned, and therefore, this line does not reconcile with the statement of operations.

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	For the Nine Months Ended September 30, 2012
Net Effect of Derivatives and Hedging Activities	Advances			Investments			Mortgage Loans			Deposits		CO Bonds		Total
Net interest income
Amortization/accretion of hedging activities in net interest income (1)	$	(7,480	)	$	—		$	(150	)	$	—	$	15,745	$	8,115
Net interest settlements included in net interest income (2)	(149,548		)	(30,626		)	—			1,151		69,054		(109,969		)
Total effect on net interest income	(157,028		)	(30,626		)	(150		)	1,151		84,799		(101,854		)
Net (losses) gains on derivatives and hedging activities
(Losses) gains on fair-value hedges	(1,293		)	1,255			—			—		293		255
Gains (losses) on derivatives not receiving hedge accounting	6			(11,228		)	—			—		372		(10,850		)
Other	—			—			2,086			—		—		2,086
Net (losses) gains on derivatives and hedging activities	(1,287		)	(9,973		)	2,086			—		665		(8,509		)
Subtotal	(158,315		)	(40,599		)	1,936			1,151		85,464		(110,363		)
Net gains on trading securities	—			8,291			—			—		—		8,291
Total net effect of derivatives and hedging activities	$	(158,315	)	$	(32,308	)	$	1,936		$	1,151	$	85,464	$	(102,072	)

_____________________

(1) Represents the amortization/accretion of hedging fair-value adjustments for closed hedge positions.

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

	For the Nine Months Ended September 30, 2011
Net Effect of Derivatives and Hedging Activities	Advances			Investments			Mortgage Loans		Deposits		CO Bonds		Total
Net interest income
Amortization / accretion of hedging activities in net interest income (1)	$	(10,031	)	$	—		$	167	$	—	$	5,283	$	(4,581	)
Net interest settlements included in net interest income (2)	(218,021		)	(35,658		)	—		1,183		123,553		(128,943		)
Total net interest income	(228,052		)	(35,658		)	167		1,183		128,836		(133,524		)
Net gains (losses) on derivatives and hedging activities
Gains on fair-value hedges	423			282			—		—		1,141		1,846
Losses on derivatives not receiving hedge accounting	(88		)	(26,884		)	—		—		—		(26,972		)
Other	—			—			1,599		—		—		1,599
Net gains (losses) on derivatives and hedging activities	335			(26,602		)	1,599		—		1,141		(23,527		)
Subtotal	(227,717		)	(62,260		)	1,766		1,183		129,977		(157,051		)
Net gains on trading securities (3)	—			17,514			—		—		—		17,514
Total net effect of derivatives and hedging activities	$	(227,717	)	$	(44,746	)	$	1,766	$	1,183	$	129,977	$	(139,537	)

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_____________________

(1) Represents the amortization/accretion of hedging fair-value adjustments for closed hedge positions.

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

(3) Includes only those gains or losses on trading securities that have an economic derivative assigned, and therefore, this line does not reconcile with the statement of operations.

Net interest margin for the three months ended September 30, 2012 and 2011, was 0.61 percent and 0.63 percent, respectively. If derivative instruments had not been used as hedges to mitigate the impact of interest-rate fluctuations, net interest margin would have been 0.91 percent and 0.95 percent, respectively.

Net interest margin for the nine months endedSeptember 30, 2012 and 2011, was 0.65 percent and 0.56 percent, respectively. If derivative instruments had not been used as hedges to mitigate the impact of interest-rate fluctuations, net interest margin would have been 0.96 percent and 0.89 percent, respectively.

Interest paid and received on interest-rate-exchange agreements that are used in asset and liability management, but which do not meet hedge-accounting requirements (economic hedges), are classified as net losses on derivatives and hedging activities in other income. As shown under — Other Income (Loss) and Operating Expenses below, interest accruals on derivatives classified as economic hedges totaled a net expense of $1.9 million and $2.1 million, respectively for the three months ended September 30, 2012 and 2011. For the nine months endedSeptember 30, 2012 and 2011, interest accruals on derivatives classified as economic hedges totaled a net expense of $5.7 million and $7.0 million, respectively.

For more information about our use of derivative instruments to manage interest-rate risk, see Item 3 — Quantitative and Qualitative Disclosures about Market Risk — Strategies to Manage Market and Interest-Rate Risk.

Other Income (Loss) and Operating Expenses

The following table presents a summary of other income (loss) for the three and nine months endedSeptember 30, 2012 and 2011. Additionally, detail on the components of net gains (losses) on derivatives and hedging activities is provided, indicating the source of these gains and losses by type of hedging relationship and hedge accounting treatment.

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Other Income (Loss) (dollars in thousands)
	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Gains (losses) on derivatives and hedging activities:
Net gains related to fair-value hedge ineffectiveness	$	597		$	445		$	255		$	1,846
Net unrealized (losses) gains related to derivatives not receiving hedge accounting associated with:
Advances	231			(931		)	(166		)	(1,132		)
Trading securities	(1,778		)	(16,019		)	(4,955		)	(18,818		)
Mortgage delivery commitments	767			1,180			2,086			1,599
Net interest-accruals related to derivatives not receiving hedge accounting	(1,903		)	(2,149		)	(5,729		)	(7,022		)
Net losses on derivatives and hedging activities	(2,086		)	(17,474		)	(8,509		)	(23,527		)
Net impairment losses on held-to-maturity securities recognized in income	(1,092		)	(7,210		)	(5,544		)	(73,588		)
Loss on early extinguishment of debt	(4,992		)	—			(16,993		)	—
Service-fee income	1,483			2,046			4,474			6,503
Net unrealized gains on trading securities	4,669			13,638			8,291			17,594
Realized net gain from sale of available-for-sale securities	—			—			—			12,801
Other	228			131			2,753			469
Total other loss	$	(1,790	)	$	(8,869	)	$	(15,528	)	$	(59,748	)

The following tables display held-to-maturity securities for which other-than-temporary impairment was recognized in the three and nine months ending September 30, 2012 and 2011, based on whether the security is newly impaired or previously impaired (dollars in thousands).

	For the Three Months Ended September 30, 2012								For the Three Months Ended September 30, 2011
Other-Than-Temporarily Impaired Investment:	Total Other-Than-Temporary Impairment Losses on Investment Securities			Net Amount of Impairment Losses Reclassified to Accumulated Other Comprehensive Loss		Net Impairment Losses on Investment Securities Recognized in Income			Total Other-Than-Temporary Impairment Losses on Investment Securities			Net Amount of Impairment Losses Reclassified to Accumulated Other Comprehensive Loss		Net Impairment Losses on Investment Securities Recognized in Income
Securities newly impaired during the period specified	$	(371	)	$	371	$	—		$	—		$	—	$	—
Securities previously impaired prior to the period specified	(1,706		)	614		(1,092		)	(8,336		)	1,126		(7,210		)
Total other-than-temporarily impaired securities	$	(2,077	)	$	985	$	(1,092	)	$	(8,336	)	$	1,126	$	(7,210	)

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	For the Nine Months Ended September 30, 2012								For the Nine Months Ended September 30, 2011
Other-Than-Temporarily Impaired Investment:	Total Other-Than-Temporary Impairment Losses on Investment Securities			Net Amount of Impairment Losses Reclassified to Accumulated Other Comprehensive Loss		Net Impairment Losses on Investment Securities Recognized in Income			Total Other-Than-Temporary Impairment Losses on Investment Securities			Net Amount of Impairment Losses Reclassified to (from) Accumulated Other Comprehensive Loss			Net Impairment Losses on Investment Securities Recognized in Income
Securities newly impaired during the period specified	$	(951	)	$	951	$	—		$	(6,072	)	$	6,026		$	(46	)
Securities previously impaired prior to the period specified	(13,267		)	7,723		(5,544		)	(25,910		)	(47,632		)	(73,542		)
Total other-than-temporarily impaired securities	$	(14,218	)	$	8,674	$	(5,544	)	$	(31,982	)	$	(41,606	)	$	(73,588	)

The following table displays held-to-maturity securities for which other-than-temporary impairment was recognized in the quarter ending September 30, 2012 (dollars in thousands). Securities are classified in the table below based on the classification at the time of issuance. We have instituted litigation on certain of the private-label MBS in which we have invested, as discussed in Part II — Item 1 — Legal Proceedings. Our complaint asserts, among others, claims for untrue or misleading statements in the sale of securities, and it is possible that classifications of private-label MBS as provided herein when based on classification at the time of issuance as disclosed by those securities' issuance documents, as well as other statements made by or on behalf of the issuers about the securities, are inaccurate.

	At September 30, 2012								For the Three Months Ended September 30, 2012
Other-Than-Temporarily Impaired Investment:	Par Value		Amortized Cost		Carrying Value		Fair Value		Other-than-Temporary Impairment Related to Credit Loss
Private-label residential MBS - Prime	$	1,411	$	1,411	$	1,040	$	1,040	$	—
Private-label residential MBS - Alt-A	$	199,089	$	145,328	$	103,488	$	114,646	$	(1,092	)
Total other-than-temporarily impaired securities	$	200,500	$	146,739	$	104,528	$	115,686	$	(1,092	)

See Item 1 — Notes to the Financial Statements — Note 5 — Held-to-Maturity Securities, Note 6 — Other-Than-Temporary Impairment, and — Financial Condition — Investments Credit Risk below for additional detail and analysis of our portfolio of held-to-maturity investments in private-label MBS.

Changes in the fair value of trading securities are recorded in other loss. For the three months ended September 30, 2012 and 2011, we recorded net unrealized gains on trading securities of $4.7 million and $13.6 million, respectively. Changes in the fair value of the associated economic hedges amounted to net losses of $1.8 million and $16.0 million for the three months ended September 30, 2012 and 2011, respectively. Also included in other loss are interest accruals on these economic hedges, which resulted in a net expense of $1.9 million for both the three months ended September 30, 2012 and 2011.

For the nine months ended September 30, 2012 and 2011, we recorded net unrealized gains on trading securities of $8.3 million and $17.6 million, respectively. Changes in the fair value of the associated economic hedges amounted to net losses of $5.0 million and $18.8 million for the nine months endedSeptember 30, 2012 and 2011, respectively. Also included in other loss are interest accruals on these economic hedges, which resulted in a net expense of $5.5 million and $5.8 million for the nine months endedSeptember 30, 2012 and 2011, respectively.

For the three months ended September 30, 2012, compensation and benefits expense and other operating expenses amounted to $12.8 million, a decrease of $982,000 from the September 30, 2011 amount of $13.8 million.

For the nine months endedSeptember 30, 2012, compensation and benefits expense and other operating expenses amounted to $39.2 million, a decrease of $175,000 from the September 30, 2011 amount of $39.3 million.

Our share of the costs and expenses of operating the Finance Agency and the Office of Finance totaled $1.7 million and $1.8

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million for the three months ended September 30, 2012 and 2011, respectively, and totaled $5.5 million and $5.8 million for the nine months endedSeptember 30, 2012 and 2011, respectively.

FINANCIAL CONDITION

Advances

At September 30, 2012, the advances portfolio totaled $23.9 billion, a decrease of $1.3 billion compared with $25.2 billion at December 31, 2011.

The following table summarizes advances outstanding by product type at September 30, 2012, and December 31, 2011.

Advances Outstanding by Product Type (dollars in thousands)
	September 30, 2012				December 31, 2011
	Par Value		Percent of Total		Par Value		Percent of Total
Fixed-rate advances
Overnight	$	388,246	1.7	%	$	268,888	1.1	%
Long-term	9,743,415		41.8		10,546,190		42.9
Short-term	4,488,282		19.2		3,161,265		12.9
Putable	3,578,325		15.3		4,693,575		19.1
Amortizing	1,002,030		4.3		1,394,071		5.7
Callable	32,500		0.1		2,500		—
Expander	30,000		0.1		20,000		0.1
Fixed-rate plus cap	10,000		0.1		10,000		—
	19,272,798		82.6		20,096,489		81.8
Variable-rate advances
Overnight	13,013		—		7,683		—
Simple variable	3,920,000		16.8		4,457,000		18.1
Putable	118,500		0.5		—		—
Floating rate advances with embedded caps and / or floors	20,000		0.1		20,000		0.1
	4,071,513		17.4		4,484,683		18.2
Total par value	$	23,344,311	100.0	%	$	24,581,172	100.0	%

See Item 1 — Notes to the Financial Statements — Note 7 — Advances for disclosures relating to redemption terms of the advances portfolio.

We lend to members and housing associates with principal places of business within our district, which consists of the six New England states. Outstanding advances are generally diversified among our borrowers throughout our district, with some concentrations, as set forth in the table below. At September 30, 2012, we had advances outstanding to 305, or 66.7 percent, of our 457 members. At December 31, 2011, we had advances outstanding to 317, or 68.6 percent, of our 462 members.

The following table presents the top five advance-borrowing institutions at September 30, 2012, and the interest earned on outstanding advances to such institutions for the three and nine months endedSeptember 30, 2012.

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Top Five Advance-Borrowing Institutions (dollars in thousands)
	September 30, 2012
Name	Par Value of Advances		Percent of Total Par Value of Advances		Weighted-Average Rate (1)		Advances Interest Income for the Three Months Ended September 30, 2012		Advances Interest Income for the Nine Months Ended September 30, 2012
RBS Citizens, N.A.	$	3,520,085	15.1	%	0.32	%	$	3,155	$	8,367
Webster Bank, N.A.	1,452,569		6.2		0.62		2,459		8,655
Salem Five Cents Savings Bank	659,551		2.8		1.87		3,219		9,905
Bank of America Rhode Island, N.A.	600,323		2.6		1.13		2,137		5,114
Massachusetts Mutual Life Insurance Company	600,000		2.6		1.96		3,008		8,958

_______________________

(1) Weighted-average rates are based on the contract rate of each advance without taking into consideration the effects of interest-rate-exchange agreements that may be used as a hedging instrument.

The financial services industry continues to undergo a period of rapid change based on economic, regulatory, political and other factors that had their inception with the financial crisis in 2008. Given these factors, we believe it is reasonably possible that one or more of our largest members, either by outstanding advances or by capital stock investment, could be acquired by or merge with an institution that is ineligible for Bank membership. The loss of significant members could lower overall demand for our products and services and, thereby, adversely impact our performance. See the 2011 Annual Report — Item 1A — Risk Factors — Strategic Risks —The loss of significant members could result in lower demand for our products and services.

Advances Credit Risk

We endeavor to minimize credit risk on advances by monitoring the financial condition of our borrowers and by holding sufficient collateral to protect us from credit losses. Our approaches to credit risk on advances are described under Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Financial Condition — Advances Credit Risk in the 2011 Annual Report. We have never experienced a credit loss on an advance.

Our members continue to be challenged by the continuing weak economic conditions, although there have been some measures of improvement. Aggregate nonperforming assets for depository institution members declined from 1.12 percent of assets as of December 31, 2011, to 1.02 percent of assets as of June 30, 2012. The aggregate ratio of tangible capital to assets among the membership increased from 8.67 percent of assets as of December 31, 2011, to 8.98 percent as of June 30, 2012. (June 30, 2012 is the date of our most recent data on our membership for this report.) As of September 30, 2012, there have been no member failures during 2012, and there were no failures during 2011. All of our extensions of credit to members are secured by eligible collateral as noted herein. However we could incur losses, if a member were to default, the value of the collateral pledged by the member declined to a point such that we were unable to realize sufficient value from the pledged collateral to cover the member's obligations, and we were unable to obtain additional collateral to make up for the reduction in value of such collateral. Although not expected, a default by a member with significant obligations to us could result in significant financial losses, which would adversely impact our results of operations and financial condition.

We assign each borrower to one of the following three credit status categories based primarily on our assessment of the borrower's overall financial condition and other factors:

• Category-1: members that are generally in satisfactory financial condition; 

• Category-2: members that show weakening financial trends in key financial indices and/or regulatory findings; and

• Category-3: members with financial weaknesses that present an elevated level of concern. In addition, we generally place insurance company members in Category-3 status because, unlike other members, insurance companies are subject to different laws and regulations in their particular states that could expose us to unique risks. We place housing associates in Category-3.

For additional information on the Bank's classification of its borrowers, see the 2011 Annual Report under Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Financial Condition — Advances

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Credit Risk in the 2011 Annual Report.  

Advances outstanding to borrowers in Category-1 status at September 30, 2012, totaled $17.1 billion. For these advances, we have access to collateral through security agreements, where the borrower agrees to hold such collateral for our benefit, totaling $45.8 billion as of September 30, 2012. Of this total, $9.6 billion of securities have been delivered to us or to an approved third-party custodian, an additional $1.8 billion of securities are held by borrowers' securities corporations, and $6.6 billion of residential mortgage loans have been pledged by borrowers' real-estate-investment trusts.

The following table provides information regarding advances outstanding with our borrowers in Category-1, Category-2, and Category-3 status at September 30, 2012, along with their corresponding collateral balances.

Advances Outstanding by Borrower Collateral Status As of September 30, 2012 (dollars in thousands)
	Number of Borrowers	Par Value of Advances Outstanding		Discounted Collateral		Ratio of  Discounted  Collateral to Advances
Category-1 status	260	$	17,128,039	$	45,750,283	267.1	%
Category-2 status	25	4,767,206		17,131,401		359.4
Category-3 status	25	1,449,066		1,814,899		125.2
Total	310	$	23,344,311	$	64,696,583	277.1	%

The method by which a borrower pledges collateral is dependent upon the category status to which it is assigned based on its financial condition and on the type of collateral that the borrower pledges. Based upon the method by which borrowers pledge collateral to us, the following table shows the total potential lending value of the collateral that borrowers have pledged to us, net of our collateral valuation discounts as of September 30, 2012.

Collateral by Pledge Type (dollars in thousands)
	Discounted Collateral
Collateral not specifically listed and identified	$	36,932,450
Collateral specifically listed and identified	21,485,957
Collateral delivered to us	16,560,057

For additional information on our collateral policies and practices, see Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Financial Condition — Advances Credit Risk in the 2011 Annual Report.

We accept nontraditional and subprime loans that are underwritten in accordance with applicable regulatory guidance as eligible collateral for our advances as discussed under Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Financial Condition — Advances Credit Risk in the 2011 Annual Report. At September 30, 2012, and December 31, 2011, the amount of pledged nontraditional and subprime loan collateral was 10 percent and nine percent, respectively, of total member borrowing capacity.

We have not recorded any allowance for credit losses on credit products at September 30, 2012, and December 31, 2011, for the reasons discussed in Item 1 — Notes to the Financial Statements — Note 9 — Allowance for Credit Losses.

Investments

At September 30, 2012, investment securities and short-term money market instruments totaled $17.9 billion, compared with $21.4 billion at December 31, 2011.

Investment securities declined$486.6 million to $11.7 billion at September 30, 2012, compared with December 31, 2011.

Short-term money market investments totaled $6.2 billion at September 30, 2012, compared with $9.2 billion at December 31, 2011. This $2.9 billion net decrease resulted from a $1.8 billiondecrease in securities purchased under agreements to resell and

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a $1.2 billiondecrease in federal funds sold.

Under our regulatory authority to purchase MBS, additional investments in MBS, ABS, and certain securities issued by the Small Business Administration (SBA) are prohibited if our investments in such securities exceed 300 percent of capital. Capital for this calculation is defined as capital stock, mandatorily redeemable capital stock, and retained earnings. At September 30, 2012, and December 31, 2011, our MBS, ABS, and SBA holdings represented 206 percent and 195 percent of capital, respectively.

We endeavor to maintain our total investments at a level no greater than 50 percent of our total assets because investing activities are generally incidental to our mission. Our total investments were 39.2 percent of our total assets at September 30, 2012, versus 42.8 percent at December 31, 2011. We have been able to satisfy this investment objective without a material impact on our results of operations or financial condition because the reduction in investments has been principally concentrated in short-term, very low-yielding investments and because other components of our assets have maintained a strong net interest spread to funding costs. We expect to continue to be able to satisfy this investment objective for the foreseeable future without a material impact on our results of operations or financial condition by continuing this approach, as necessary.

Our MBS investment portfolio consists of the following categories of securities as of September 30, 2012, and December 31, 2011. The percentages in the table below are based on carrying value.

Mortgage-Backed Securities
	September 30, 2012		December 31, 2011
Residential MBS - U.S. government-guaranteed and GSE	61.1	%	53.4	%
Commercial MBS - U.S. government-guaranteed and GSE	22.4		26.7
Private-label residential MBS	16.1		19.5
ABS backed by home-equity loans	0.3		0.3
Private-label commercial MBS	0.1		0.1
Total MBS	100.0	%	100.0	%

See Item 1 — Notes to the Financial Statements — Note 3 — Trading Securities, Note 4 — Available-for-Sale Securities, Note 5 — Held-to-Maturity Securities, and Note 6 — Other-Than-Temporary Impairment for additional information on our investment securities.

Investments Credit Risk

We are subject to credit risk on unsecured investments consisting primarily of short-term (under one year to maturity) money market instruments issued by high-quality financial institutions and long-term (generally at least one year to maturity) debentures issued or guaranteed by U.S. agencies, the FDIC under the FDIC's Temporary Liquidity Guarantee Program, U.S government-owned corporations, GSEs, and supranational institutions. We place short-term funds with large, high-quality financial institutions with long-term credit ratings no lower than single-A (or equivalent) on an unsecured basis; currently all such placements expire within one day. We have counterparty exposure on these short-term investments.

In addition to these unsecured short-term investments, we also make secured investments in the form of reverse repurchase agreements secured by U.S. agency obligations, whose terms to maturity are up to 35 days. We have also invested in and are subject to secured credit risk related to MBS, ABS, and HFA securities that are directly or indirectly supported by underlying mortgage loans. Finance Agency regulations require our investments in MBS and ABS to be rated triple-A (or equivalent) at the time of purchase and our investments in HFA securities to be rated double-A (or equivalent) or higher as of the date of purchase.

Credit ratings on total investments are provided in the following table.

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Credit Ratings of Investments at Carrying Value As of September 30, 2012 (dollars in thousands)
	Long-Term Credit Rating (1)
Investment Category	Triple-A		Double-A		Single-A		Triple-B		Below Triple-B		Unrated
Money market instruments: (2)
Interest-bearing deposits	$	—	$	261	$	—	$	—	$	—	$	—
Securities purchased under agreements to resell	—		—		4,625,000		500,000		—		—
Federal funds sold	—		650,000		450,000		—		—		—
Total money market instruments	—		650,261		5,075,000		500,000		—		—
Investment securities:
Non-MBS:
U.S. agency obligations	—		14,666		—		—		—		—
U.S. government-owned corporations	—		293,600		—		—		—		—
GSEs	—		2,218,142		—		—		—		—
Supranational institutions	473,416		—		—		—		—		—
Corporate bonds (3)	—		308,225		—		—		—		—
HFA securities	24,525		115,549		—		49,780		—		2,115
Total non-MBS	497,941		2,950,182		—		49,780		—		2,115
MBS:
U.S. government guaranteed - residential (2)	—		135,922		—		—		—		—
U.S. government guaranteed - commercial (2)	—		463,211		—		—		—		—
GSE - residential (2)	—		4,890,462		—		—		—		—
GSE - commercial (2)	—		1,374,973		—		—		—		—
Private-label - residential	13,872		10,174		103,237		64,077		1,131,325		18
Private-label - commercial	10,335		—		—		—		—		—
ABS backed by home-equity loans	6,676		5,287		7,839		—		5,386		—
Total MBS	30,883		6,880,029		111,076		64,077		1,136,711		18
Total investment securities	528,824		9,830,211		111,076		113,857		1,136,711		2,133
Total investments	$	528,824	$	10,480,472	$	5,186,076	$	613,857	$	1,136,711	$	2,133

_______________________

(1) Ratings are obtained from Moody's, Fitch, and S&P and are each as of September 30, 2012. If there is a split rating, the lowest rating is used.

(2) The issuer rating is used for these investments, and if a rating is on negative credit watch, the rating in the next lower rating category is used and then the lowest rating is determined.

(3) Consists of corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. government.

The following table details our investment securities with a long-term credit rating below investment grade as of September 30, 2012.

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Credit Ratings of Investments Below Investment Grade at Carrying Value As of September 30, 2012 (dollars in thousands)
Investment Category	Double-B		Single-B		Triple-C		Double-C		Single-C		Single-D		Total Below Investment Grade
Private-label residential MBS	$	45,410	$	119,598	$	553,611	$	94,642	$	54,592	$	263,472	$	1,131,325
ABS backed by home-equity loans	—		3,578		1,334		—		—		474		5,386
Total	$	45,410	$	123,176	$	554,945	$	94,642	$	54,592	$	263,946	$	1,136,711

Finance Agency regulations include limits on the amount of unsecured credit an individual FHLBank 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 long-term unsecured credit rating. Under these regulations, the level of eligible regulatory capital is determined as the lesser of our total regulatory capital or the eligible amount of regulatory capital of the counterparty. The eligible amount of regulatory capital is then multiplied by a specified percentage for each counterparty, which product is our maximum amount of unsecured credit exposure to that counterparty. The percentage that we may offer for term extensions of unsecured credit ranges from 1 percent to 15 percent based on the counterparty's credit rating. Term extensions of unsecured credit include on- and off-balance sheet and derivative transactions. See — Derivative Instruments Credit Risk for additional information related to derivatives exposure.

Finance Agency regulations further allow additional unsecured credit for overnight sales of federal funds. The specified percentage of eligible regulatory capital for determining the maximum amount of unsecured credit exposure which we may offer to a counterparty for overnight sales of federal funds ranges from 2 percent to 30 percent based on the counterparty's credit rating. However, per Finance Agency regulations our total unsecured exposure to a single counterparty may not exceed twice the regulatory limit for term exposures, or a total of 2 percent to 30 percent of the eligible amount of regulatory capital, based on the counterparty's credit rating. During the quarter ended September 30, 2012, we were in compliance with Finance Agency regulatory limits established for unsecured credit.

We are prohibited by Finance Agency regulations from investing in financial instruments issued by non-U.S. entities, including foreign sovereign governments, other than those issued by U.S. branches and agency offices of foreign commercial banks. Our unsecured credit exposures to U.S. branches and agency offices of foreign commercial banks include, among other things, the risk that, as a result of political or economic conditions in a country, the counterparty may be unable to meet their contractual repayment obligations. Our unsecured credit exposures to domestic counterparties and U.S. subsidiaries of foreign commercial banks include the risk that these counterparties have extended credit to foreign counterparties. We are in compliance with the Finance Agency regulation and did not own any financial instruments issued by foreign sovereign governments, including those countries that are members of the European Union, as of September 30, 2012.

For information on how we mitigate our investments' credit risks, see Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Financial Condition —Investments Credit Risk in the 2011 Annual Report.

The table below presents our short-term unsecured money-market credit exposure with counterparties by investment type. At September 30, 2012, we did not have any aggregate unsecured credit exposure from investments of $1 billion or more to any individual counterparty.

Short-term Unsecured Money-market Credit Exposure by Investment Type (dollars in thousands)
	Carrying Value (1)
	September 30, 2012		December 31, 2011
Federal funds sold	$	1,100,000	$	2,270,000

_______________________

(1) Excludes unsecured investment credit exposure to U.S. Government, GSEs, U.S. government agencies and instrumentalities, corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program, and triple-A rated supranational institutions and does not include related accrued interest as of September 30, 2012.

As of September 30, 2012, our unsecured investment credit exposure to U.S. branches and agency offices of foreign

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commercial banks was limited to overnight federal funds sold. As of September 30, 2012, all of our unsecured investment credit exposure in federal funds sold was to U.S. branches and agency offices of foreign commercial banks.

The table below presents the September 30, 2012, carrying values and average balances for the three months ended September 30, 2012, of the short-term unsecured money market credit exposures presented by the domicile of the counterparty or the domicile of the counterparty's parent for U.S. branches and agency offices of foreign commercial banks. We endeavor to mitigate this credit risk by investing in unsecured investments of highly rated counterparties. At September 30, 2012, all of our short-term unsecured money market investments were rated at least single-A.

Period-End and Average Balance of Unsecured Credit Exposure, by Country of Domicile of Counterparty (1)  (dollars in thousands)
Country of Domicile of Counterparty	Carrying Value as of September 30, 2012		Average Balance for the Nine Months ended September 30, 2012
Domestic	$	—	$	8,175
U.S branches and agency offices of foreign commercial banks
Sweden	650,000		581,518
Canada	350,000		305,737
United Kingdom	100,000		190,511
Norway	—		113,449
Germany	—		148,230
Finland	—		84,799
Switzerland	—		44,982
Australia	—		40,055
Netherlands	—		13,321
Total U.S branches and agency offices of foreign commercial banks	1,100,000		1,522,602
Total unsecured credit exposure	$	1,100,000	$	1,530,777

_______________________

(1) Excludes unsecured investment credit exposure to U.S. Government, GSEs, U.S. government agencies and instrumentalities, corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program, and triple-A rated supranational institutions and does not include related accrued interest as of September 30, 2012.

The table below presents the contractual maturity of short-term unsecured money market credit exposure by the domicile of the counterparty or the domicile of the counterparty's parent for U.S. branches and agency offices of foreign commercial banks. We also endeavor to mitigate the credit risk on short-term unsecured money market investments by investing in investments that have short-term maturities. At September 30, 2012, all of our outstanding unsecured money market investments had overnight maturities.

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Contractual Maturity of Unsecured Credit Exposure, by Country of Domicile of Counterparty (dollars in thousands)
	Carrying Value (1) as of September 30, 2012
Country of Domicile of Counterparty	Overnight		Due 2 days through 30 days		Due 31 days through 90 days		Due 91 days through 180 days		Due 181 days through 270 days		Due after 270 days		Total
U.S branches and agency offices of foreign commercial banks
Sweden	$	650,000	$	—	$	—	$	—	$	—	$	—	$	650,000
Canada	350,000		—		—		—		—		—		350,000
United Kingdom	100,000		—		—		—		—		—		100,000
Total unsecured investment credit exposure	$	1,100,000	$	—	$	—	$	—	$	—	$	—	$	1,100,000

_______________________

(1) Excludes unsecured investment credit exposure to U.S. Government, GSEs, U.S. Government agencies and instrumentalities, corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program, and triple-A rated supranational institutions and does not include related accrued interest as of September 30, 2012.

During the quarter ended September 30, 2012, we continued to invest in unsecured overnight money market instruments issued by certain Eurozone financial institutions rated at least single-A or higher by the three major NRSROs and domiciled in Finland, Germany, and the Netherlands from time to time. We continued to use the same safeguards and approaches to these counterparties to protect against unanticipated exposures arising from possible contagion from the Eurozone financial crisis that are discussed under Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Financial Market Conditions — European Sovereign Debt Crisis in the 2011 Annual Report. On September 30, 2012, we had no unsecured money market exposure to Eurozone financial institutions. Our maximum unsecured money market exposure to any single Eurozone financial institution was $500.0 million on any day during the quarter ended September 30, 2012.

At September 30, 2012, our unsecured credit exposure related to money market instruments and debentures, including accrued interest, was $4.4 billion to 11 counterparties and issuers, of which $1.1 billion was for federal funds sold, and $3.3 billion was for debentures. The following issuers/counterparties individually accounted for greater than 10 percent of total unsecured credit exposure as of September 30, 2012:

Issuers / Counterparties Representing Greater Than 10 Percent of Total Unsecured Credit As of September 30, 2012
Issuer / counterparty	Percent
Fannie Mae	34.9	%
Freddie Mac	15.5
Inter-American Development Bank (a supranational institution)	10.8

The following table presents a summary of the average projected values over the remaining lives of the securities for the significant inputs relating to our cash flow analysis of private-label MBS during the quarter ended September 30, 2012, as well as related current credit enhancement. Credit enhancement is defined as the percentage of subordinated tranches, over-collateralization, and other accounts or cash flows that provide additional credit support such as reserve funds, insurance policies, and/or excess interest, if any, in a security structure that will generally absorb losses before we will experience a loss on the security. Subordinated tranches can serve as credit enhancement, because losses are generally allocated to the subordinate tranches until their principal balances have been reduced to zero before senior tranches are allocated losses. Over-collateralization means available collateral in excess of the principal balance of the related security. The calculated averages represent the dollar-weighted averages of all the private-label residential MBS and home equity loan investments in each category shown, regardless of whether or not the securities have incurred an other-than-temporary impairment credit loss (dollars in thousands).

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			Significant Inputs
			Projected Prepayment Rates				Projected Default Rates				Projected Loss Severities				Current Credit Enhancement
Private-label MBS by Year of Securitization	Par Value (1)		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent
Private-label residential MBS
Prime (2)
2007	$	21,977	8.1	%	8.1	%	6.1	%	6.1	%	29.2	%	29.2	%	7.6	%	7.6	%
2006	15,346		7.7		7.7		34.4		34.4		39.7		39.7		0.0		0.0
2005	56,389		9.0		5.6 - 11.2		28.9		15.7 - 47.7		44.5		32.3 - 50.4		13.7		2.6 - 47.5
2004 and prior	137,159		11.2		4.3 - 26.2		16.1		2.9 - 59.5		30.7		21.2 - 47.7		15.6		6.2 - 70.7
Total	$	230,871	10.1	%	4.3 - 26.2		19.5	%	2.9 - 59.5		34.5	%	21.2 - 50.4		13.4	%	0.0 - 70.7
Alt-A (2)
2007	$	518,697	3.8	%	1.9 - 9.6		74.0	%	32.7 - 87.6		50.5	%	40.8 - 59.0		12.0	%	0.0 - 42.9
2006	859,238		4.3		2.1 - 7.5		70.0		37.9 - 85.6		52.9		39.2 - 58.4		13.4		0.0 - 48.9
2005	564,050		6.6		3.3 - 13.1		47.7		23.3 - 73.1		44.8		32.1 - 64.0		20.1		0.0 - 62.9
2004 and prior	54,202		10.6		7.8 - 18.0		33.3		1.7 - 54.0		38.1		19.5 - 47.9		24.5		7.4 - 40.1
Total	$	1,996,187	5.0	%	1.9 - 18.0		63.7	%	1.7 - 87.6		49.6	%	19.5 - 64.0		15.2	%	0.0 - 62.9
ABS backed by home equity loans
Subprime (2)
2004 and prior	$	27,032	6.3	%	1.0 - 7.8		30.1	%	25.9 - 43.4		76.2	%	63.5 - 95.1		35.1	%	0.0 - 99.8

_______________________

(1)Commercial private-label MBS with a par value of $10.4 million and a private-label residential MBS with a par value of $3.3 million that are backed by the Federal Housing Administration and the Department of Veteran Affairs loans are not included in this table.

(2) Securities are classified in the table above based upon the current performance characteristics of the underlying pool and therefore the manner in which the collateral pool group backing the security has been modeled (as prime, Alt-A, or subprime), rather than the classification of the security at the time of issuance.

For purposes of the tables below we classify private-label residential and commercial MBS and ABS backed by home equity loans as prime, Alt-A, or subprime based on the originator's classification at the time of origination or based on the classification by an NRSRO upon issuance of the MBS. In some instances, the NRSROs may have changed their classification subsequent to origination, which would not necessarily be reflected in the following tables.

Of our $9.0 billion in par value of MBS and ABS investments at September 30, 2012, $2.3 billion in par value are private-label MBS. These private-label MBS are comprised of the following:

• $2.0 billion in par value are securities backed primarily by Alt-A loans;

• $244.6 million in par value are backed primarily by prime residential and/or commercial loans; and

• $27.0 million in par value of these investments are backed primarily by subprime mortgages.

While there are no universally accepted classifications of mortgage loans based on underwriting standards, in general, subprime underwriting implies a credit-impaired borrower with a FICO^® score below 660, prime underwriting implies a borrower without a history of delinquent payments as well as documented income and a loan amount that is at or less than 80 percent of the market value of the house, while Alt-A underwriting implies a prime borrower with limited income documentation and/or a loan-to-value ratio of higher than 80 percent. FICO^® is a widely used credit-industry model developed by Fair Isaac and Company, Inc. to assess borrower credit quality with scores ranging from a low of 300 to a high of 850. While we generally follow the collateral type definitions provided by S&P, we do review the credit performance of the underlying collateral, and revise the classification where appropriate, an approach that is likewise incorporated into the modeling assumptions provided by the OTTI Governance Committee. For additional information on the OTTI Governance Committee, see Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Critical Accounting Estimates of the 2011 Annual Report.

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The third-party collateral loan performance platform used by the FHLBank of San Francisco, with whom we have contracted to perform these analyses, assesses eight bonds that we own, totaling $73.2 million in par value as of September 30, 2012, to have collateral that is Alt-A in nature, while that same collateral is classified as prime by S&P. Accordingly, these bonds have been modeled using the same credit assumptions applied to Alt-A collateral. However, these bonds are reported as prime in the various tables below in this section.

Additionally, one bond classified as Alt-A collateral by S&P, of which we held $4.5 million in par value as of September 30, 2012, is classified and modeled as prime by the third-party modeling software. However this bond is reported as Alt-A in the various tables below in this section in accordance with S&P's classification. See — Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Critical Accounting Estimates of the 2011 Annual Report for information on our key inputs, assumptions, and modeling employed by us in our other-than-temporary impairment assessments.

Unpaid Principal Balance of Private-Label MBS and ABS Backed by Home Equity Loans by Fixed Rate or Variable Rate (dollars in thousands)
	September 30, 2012						December 31, 2011
Private-label MBS	Fixed Rate (1)		Variable Rate (1)		Total		Fixed Rate (1)		Variable Rate (1)		Total
Private-label residential MBS
Prime	$	20,586	$	213,633	$	234,219	$	23,846	$	292,663	$	316,509
Alt-A	38,221		1,957,966		1,996,187		42,153		2,147,908		2,190,061
Total private-label residential MBS	58,807		2,171,599		2,230,406		65,999		2,440,571		2,506,570
Private-label commercial MBS
Prime	10,367		—		10,367		10,586		—		10,586
ABS backed by home equity loans
Subprime	—		27,032		27,032		—		28,114		28,114
Total par value of private-label MBS	$	69,174	$	2,198,631	$	2,267,805	$	76,585	$	2,468,685	$	2,545,270

_______________________

 (1) The determination of fixed or variable rate is based upon the contractual coupon type of the security.

The following tables provide additional information related to our investments in MBS issued by private trusts and ABS backed by home-equity loans, indicating whether the underlying mortgage collateral is considered to be prime, Alt-A, or subprime at the time of issuance. Additionally, the amounts outstanding as of September 30, 2012, are stratified by year of issuance of the security. The tables also set forth the credit ratings and summary credit enhancements associated with our private-label MBS and ABS, stratified by collateral type and year of securitization. Average current credit enhancements as of September 30, 2012, reflect the percentage of subordinated class outstanding balances as of September 30, 2012, to our senior class outstanding balances as of September 30, 2012, weighted by the par value of our respective senior class securities, and shown by underlying loan collateral type and year of securitization. Average current credit enhancements as of September 30, 2012, are indicative of the ability of subordinated classes to absorb loan collateral lost principal and interest shortfall before senior classes are impacted.

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Private-Label MBS and ABS Backed by Home Equity Loans by Year of Securitization - Prime At September 30, 2012 (dollars in thousands)
Private-label residential MBS - Prime	Total			2007			2006			2005			2004 and prior
Par value by credit rating
Triple-A	$	2,295		$	—		$	—		$	—		$	2,295
Double-A	5,422			—			—			—			5,422
Single-A	34,787			—			—			—			34,787
Triple-B	50,211			—			—			—			50,211
Below Investment Grade
Double-B	28,870			—			—			—			28,870
Single-B	41,727			21,977			—			15,088			4,662
Triple-C	48,508			—			—			34,266			14,242
Single-C	7,035			—			—			7,035			—
Single-D	15,346			—			15,346			—			—
Unrated	18			—			—			—			18
Total	$	234,219		$	21,977		$	15,346		$	56,389		$	140,507
Amortized cost	$	223,683		$	21,977		$	12,135		$	49,600		$	139,971
Gross unrealized losses	(21,440		)	(2,869		)	(259		)	(5,847		)	(12,465		)
Fair value	202,338			19,108			11,876			43,753			127,601
Other-than-temporary impairment for the nine months ended September 30, 2012:
Total other-than-temporary impairment losses on held-to-maturity securities	$	(371	)	$	—		$	—		$	—		$	(371	)
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	371			—			—			—			371
Net impairment losses on held-to-maturity securities recognized in income	$	—		$	—		$	—		$	—		$	—
Weighted average percentage of fair value to par value	86.39		%	86.95		%	77.39		%	77.59		%	90.81		%
Original weighted average credit support	11.00			6.41			8.32			20.98			8.00
Weighted average credit support	13.29			7.62			—			13.74			15.44
Weighted average collateral delinquency (1)	12.30			5.24			16.36			18.11			10.63
Private-label commercial MBS - Prime	Total			2007			2006			2005			2004 and prior
Par value by credit rating
Triple-A	$	10,367		$	—		$	—		$	—		$	10,367
Amortized cost	10,335			—			—			—			10,335
Fair value	10,754			—			—			—			10,754
Weighted average percentage of fair value to par value	103.73		%	—		%	—		%	—		%	103.73		%
Original weighted average credit support	12.50			—			—			—			12.50
Weighted average credit support	16.09			—			—			—			16.09
Weighted average collateral delinquency (1)	0.24			—			—			—			0.24

_______________________

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 (1)Represents loans that are 60 days or more delinquent.

Private-Label MBS and ABS Backed by Home Equity Loans by Year of Securitization - Alt-A At September 30, 2012 (dollars in thousands)
Private-label residential MBS - Alt-A	Total			2007			2006			2005			2004 and prior
Par value by credit rating
Triple-A	$	11,576		$	—		$	—		$	11,576		$	—
Double-A	4,752			—			—			—			4,752
Single-A	68,993			—			—			49,346			19,647
Triple-B	13,866			—			—			7,825			6,041
Below Investment Grade
Double-B	17,308			—			—			4,449			12,859
Single-B	83,049			964			—			71,182			10,903
Triple-C	947,126			216,730			484,698			245,698			—
Double-C	214,547			83,053			59,773			71,721			—
Single-C	88,327			9,265			37,132			41,930			—
Single-D	546,643			208,685			277,635			60,323			—
Total	$	1,996,187		$	518,697		$	859,238		$	564,050		$	54,202
Amortized cost	$	1,501,386		$	354,971		$	598,341		$	493,873		54,201
Gross unrealized losses	(309,098		)	(70,187		)	(130,626		)	(100,859		)	(7,426		)
Fair value	1,197,197			289,079			468,329			393,014			46,775
Other-than-temporary impairment for the nine months ended September 30, 2012:
Total other-than-temporary impairment losses on held-to-maturity securities	$	(13,847	)	$	(290	)	$	(8,743	)	$	(4,235	)	$	(579	)
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	8,306			(156		)	3,712			4,171			579
Net impairment losses on held-to-maturity securities recognized in income	$	(5,541	)	$	(446	)	$	(5,031	)	$	(64	)	$	—
Weighted average percentage of fair value to par value	59.97		%	55.73		%	54.51		%	69.68		%	86.30		%
Original weighted average credit support	27.69			28.66			28.65			26.72			13.13
Weighted average credit support	15.23			11.99			13.40			20.12			24.49
Weighted average collateral delinquency (1)	36.25			42.65			40.44			25.75			17.65

_______________________

(1)Represents loans that are 60 days or more delinquent.

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Private-Label MBS and ABS Backed by Home Equity Loans by Year of Securitization - Subprime At September 30, 2012 (dollars in thousands)
ABS backed by home equity loans – Subprime	2004 and prior
Par value by credit rating
Triple-A	$	6,702
Double-A	5,288
Single-A	7,839
Below Investment Grade
Single-B	4,493
Triple-C	1,793
Single-D	917
Total	$	27,032
Amortized cost	$	26,361
Gross unrealized losses	(4,593		)
Fair value	21,809
Other-than-temporary impairment for the nine months ended September 30, 2012:
Total other-than-temporary impairment losses on held-to-maturity securities	$	—
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	(3		)
Net impairment losses on held-to-maturity securities recognized in income	$	(3	)
Weighted average percentage of fair value to par value	80.68		%
Original weighted average credit support	10.08
Weighted average credit support	35.10
Weighted average collateral delinquency (1)	20.03

_______________________

(1)Represents loans that are 60 days or more delinquent.

Carrying values and fair values in the table below are as of September 30, 2012.

Rating Agency Actions (1)  Investments on Negative Watch as of October 31, 2012 (dollars in thousands)
	Private-Label Residential MBS				ABS Backed by Home Equity Loans				HFA Securities
Investment Ratings	Carrying Value		Fair Value		Carrying Value		Fair Value		Carrying Value		Fair Value
Triple-A	$	13,871	$	12,959	$	1,708	$	1,327	$	—	$	—
Double-A	2,528		2,310		5,288		4,132		80,275		69,606
Single-A	3,205		3,046		—		—		—		—
Double-B	2,977		2,674		—		—		—		—

_______________________

(1) Represents the lowest rating as of October 31, 2012, available for each security based on the NRSROs we use.

The following table provides a summary of credit-rating downgrades that have occurred during the period from October 1,

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2012, through October 31, 2012, for our investments. Carrying values and fair values are as of September 30, 2012.

Rating Agency Actions (1)  Ratings Downgrades from October 1, 2012, through October 31, 2012 (dollars in thousands)
	Credit Rating as of		Carrying		Fair
Investment Category	September 30, 2012	October 31, 2012	Value		Value
Private-label - residential	Double-C	Single-D	$	7,514	$	7,983

_______________________

(1) Represents the lowest rating available for each security based on the NRSROs we use.

The following table provides certain characteristics our private-label MBS that are in a gross unrealized position by collateral

type.

Characteristics of Private-Label MBS in a Gross Unrealized Loss Position As of September 30, 2012 (dollars in thousands)
	September 30, 2012											October 31, 2012, Private-label MBS ratings based on September 30, 2012, par value
	Par Value		Amortized Cost		Gross Unrealized Losses			Weighted Average Collateral Delinquency Rates		Percent AAA		Percent AAA		Percent Investment Grade		Percent Below Investment Grade		Percent Watch List
Private-label residential MBS backed by:
Prime first lien	$	230,871	$	220,335	$	(21,439	)	12.08	%	1.0	%	1.0	%	39.2	%	60.8	%	2.4	%
Alt-A option ARM	799,224		657,160		(162,136		)	41.08		—		—		—		100.0		—
Alt-A other	1,150,307		817,867		(146,963		)	32.38		1.0		1.0		7.6		92.4		1.5
Total private-label residential MBS	2,180,402		1,695,362		(330,538		)	33.42		0.6		0.6		8.2		91.8		1.0
ABS backed by home equity loans:
Subprime first lien	26,107		25,711		(4,593		)	19.78		25.7		25.7		50.3		49.7		26.9
Total private-label MBS	$	2,206,509	$	1,721,073	$	(335,131	)	33.26	%	0.9	%	0.9	%	8.7	%	91.3	%	1.3	%

The following table provides the geographic concentrations by state and by metropolitan statistical area of the loans underlying our private-label MBS and ABS as of September 30, 2012, where such concentrations are five percent or greater of all loans underlying these investments.

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Geographic Concentrations of Loans Underlying our Private-Label MBS and ABS
State concentrations	Percentage of Total Private-Label MBS and ABS
California	39.3	%
Florida	12.6
New York	5.1
All Other	43.0
	100.0	%
Metropolitan Statistical Area
Los Angeles - Long Beach, CA	10.1	%
Washington, D.C.-MD-VA-WV	6.0
All Other	83.9
	100.0	%

Since 2008, actual and projected delinquency, foreclosure, and loss rates for prime, subprime, and Alt-A mortgage loans have increased significantly nationwide. While trends have improved in some of these actual measures and their projected assumptions, they remain elevated as of the date of this report. In addition, home prices are severely depressed in many areas and nationwide unemployment rates are high, increasing the likelihood and magnitude of potential losses on troubled and/or foreclosed real estate. The widespread impact of these trends has led to the recognition of significant losses by financial institutions, including commercial banks, investment banks, and financial guaranty providers. Actual and expected credit losses on these securities together with uncertainty as to the degree, direction, and duration of these loss trends has led to the reduction in the market values of securities backed by residential mortgages, and has elevated the potential for additional credit losses due to the other-than-temporary impairment of some of these securities.

The following graph demonstrates how average prices have changed with respect to various asset classes in our MBS portfolio during the 12 months ended September 30, 2012:

Insured Investments

Certain private-label MBS that we own are insured by monoline insurers, which guarantee the timely payment of principal and interest on such MBS if such payments cannot be satisfied from the cash flows of the underlying mortgage pool. The assessment for other-than-temporary impairment of the MBS protected by such third-party insurance is described in Item 1 — Notes to the Financial Statements — Note 6 — Other-Than-Temporary Impairment.

The following table provides the credit ratings of the third-party insurers.

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Monoline Insurance and GSE Guarantees of MBS and ABS Backed by Home Equity Loan Investments Credit Ratings and Outlook As of October 31, 2012
	Moody's		S&P		Fitch
	Credit Rating	Outlook / Negative Watch	Credit Rating	Outlook / Negative Watch	Credit Rating	Outlook / Negative Watch
Ambac Assurance Corporation (1)	Removed	NA	Removed	NA	Not Rated	Not Rated
Assured Guaranty Municipal Corp.	Aa3	Negative Watch	AA-	Stable	Not Rated	Not Rated
MBIA Insurance Corporation (2)	B3	Negative Watch	B	Negative	Not Rated	Not Rated
Syncora Guarantee Inc. (1)	Ca	Positive Watch	Removed	NA	Not Rated	Not Rated
Financial Guaranty Insurance Company (1)	Not Rated	Not Rated	Not Rated	Not Rated	Not Rated	Not Rated
Fannie Mae	Aaa	Negative	AA+	Negative	AAA	Negative
Freddie Mac	Aaa	Negative	AA+	Negative	AAA	Negative

_______________________

(1) We placed no reliance on these monoline insurers in our models estimating the projected cash flows to determine other-than-temporary impairment. See Item 1 — Notes to the Financial Statements — Note 6 — Other-Than-Temporary Impairment for additional information.

(2) MBIA Insurance Corp.'s burnout period ends in December 2012. See Item 1 — Notes to the Financial Statements — Note 6 — Other-Than-Temporary Impairment for additional information.

The following table shows our private-label MBS and ABS backed by home equity loan investments covered by monoline insurance and related gross unrealized losses.

Par Value of Monoline Insurance Coverage and Related Unrealized Losses of Private-Label MBS and ABS Backed by Home Equity Loan Investments by Year of Securitization At September 30, 2012 (dollars in thousands)
	Ambac  Assurance Corp (1)					Assured Guaranty Municipal Corp					MBIA  Insurance Corp (2)					Syncora Guarantee Inc. (1)					Financial Guaranty Insurance Co. (1)
	Monoline Insurance Coverage		Unrealized Losses			Monoline Insurance Coverage		Unrealized Losses			Monoline Insurance Coverage		Unrealized Losses			Monoline Insurance Coverage		Unrealized Losses			Monoline Insurance Coverage		Unrealized Losses
Private-label MBS by Year of Securitization
Alt-A
2007	$	52,739	$	(2,083	)	$	—	$	—		$	—	$	—		$	—	$	—		$	—	$	—
2006	13,281		(3,243		)	—		—			—		—			—		—			—		—
2005	26,885		(5,640		)	—		—			—		—			—		—			—		—
2004 and prior	1,263		(160		)	—		—			—		—			—		—			—		—
Total Alt-A	94,168		(11,126		)	—		—			—		—			—		—			—		—
Subprime
2004 and prior	1,843		(32		)	7,022		(1,536		)	13,891		(2,222		)	3,408		(623		)	868		(180		)
Total private-labelMBS	$	96,011	$	(11,158	)	$	7,022	$	(1,536	)	$	13,891	$	(2,222	)	$	3,408	$	(623	)	$	868	$	(180	)

_______________________

(1) We placed no reliance on these monoline insurers in our models estimating the projected cash flows to determine other-than-temporary impairment. See Item 1 — Notes to the Financial Statements — Note 6 — Other-Than-Temporary Impairment for additional information.

(2) MBIA Insurance Corp.'s burnout period ends in December 2012. See Item 1 — Notes to the Financial Statements — Note

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6 — Other-Than-Temporary Impairment for additional information.

Our total investments in HFA securities was $192.0 million as of September 30, 2012. The following table provides the geographic concentrations by state of our HFA investments where such concentrations are five percent or greater of our total HFA investments as of September 30, 2012.

State Concentrations of HFA Securities
	Carry Value		Percent of Total HFA Investments
Massachusetts	$	112,655	58.7	%
Rhode Island	29,910		15.6
Connecticut	24,525		12.8
Maine	15,000		7.8
All Other	9,879		5.1
	$	191,969	100.0	%

Standby Bond-Purchase Agreements. We have entered into standby bond-purchase agreements with one state HFA whereby we, for a fee, agree to purchase and hold the HFA's unremarketed bonds until the designated remarketing agent can find a new investor or the state HFA repurchases the bonds in accordance with a schedule established by the agreement. Each agreement contains termination provisions in the event of a rating downgrade of the subject bond. Standby bond purchase commitments totaled $161.6 million at September 30, 2012, to this HFA. All of the bonds underlying the commitments to this HFA maintain standalone ratings of triple-A from two NRSROs.

Mortgage Loans

As of September 30, 2012, our mortgage loan investment portfolio totaled $3.4 billion, an increase of $322.3 million from the December 31, 2011, balance of $3.1 billion. This increase occurred notwithstanding increasing prepayments on these investments, which could reflect growing interest in MPF as Fannie Mae and Freddie Mac increase their guarantee fees, reducing their competitiveness with MPF.

References to our investments in mortgage loans throughout this report include the 100 percent participation interests in mortgage loans purchased under a participation facility we have with the FHLBank of Chicago. The expiration date of this facility has been extended to December 31, 2013, and may be extended again. As of September 30, 2012, we had $354.7 million in 100 percent participation interests outstanding that had been purchased under this facility. For additional information on this facility, see Item 1 — Business — Mortgage Loan Finance — MPF Loan Participations with the FHLBank of Chicago of the 2011 Annual Report .

Mortgage Loans Credit Risk.

We are subject to credit risk from the mortgage loans in which we invest due to our exposure to the credit risk of the underlying borrowers and the credit risk of the participating financial institutions when the participating financial institutions retain credit-enhancement and/or servicing obligations. For additional information on the credit risks arising from our participation in the MPF program, see Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Financial Condition — Mortgage Loans — Mortgage Loans Credit Risk in the 2011 Annual Report.

Although our mortgage loan portfolio includes loans throughout the U.S., concentrations of five percent or greater of the outstanding principal balance of our conventional mortgage loan portfolio are shown in the following table:

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State Concentrations by Outstanding Principal Balance
	Percentage of Total Outstanding Principal Balance of Conventional Mortgage Loans
	September 30, 2012		December 31, 2011
Massachusetts	38	%	35	%
California	10		12
Maine	9		6
Connecticut	8		9
Wisconsin	7		6
All others	28		32
Total	100	%	100	%

Although delinquent loans in our portfolio are spread throughout the U.S., delinquent loanconcentrations of five percent or greater of the outstanding principal balance of our total conventional mortgage loans delinquent by more than 30 days are shown in the following table:

State Concentrations of Delinquent Conventional Mortgage Loans
	Percentage of Total Outstanding Principal Balance of Delinquent Conventional Mortgage Loans
	September 30, 2012		December 31, 2011
Massachusetts	27	%	24	%
California	21		23
Connecticut	8		9
All others	44		44
Total	100	%	100	%

Allowance for Credit Losses on Mortgage Loans. The allowance for credit losses on mortgage loans was $5.5 million at September 30, 2012, compared with $7.8 million at December 31, 2011. The principal reason for this decline is the continuing improvement in the delinquency rates of our investments in conventional mortgage loans since December 31, 2011. For information on the determination of the allowance at September 30, 2012, see Item 1— Notes to the Financial Statements — Note 9 — Allowance for Credit Losses, and for information on our methodology for estimating the allowance, see Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Critical Accounting Estimates — Allowance for Loan Losses in the 2011 Annual Report.

We place conventional mortgage loans on nonaccrual when the collection of the contractual principal or interest is 90 days or more past due. Accrued interest on nonaccrual loans is reversed against interest income. We monitor the delinquency levels of the mortgage loan portfolio on a monthly basis. The following table presents our delinquent loans (dollars in thousands).

	September 30, 2012		December 31, 2011
Nonaccrual loans, par value	$	50,338	$	54,927
Total par value past due 90 days or more and still accruing interest (1)	24,265		24,438

_______________________

(1) Represents government mortgage loans.

Higher-Risk Loans. Ourportfolio includes certain higher-risk conventional mortgage loans. These include high loan-to-value ratio mortgage loans and subprime mortgage loans. The higher-risk loans represent a relatively small portion of our conventional mortgage loan portfolio (7.7 percent by outstanding principal balance), but a disproportionately higher portion of the conventional mortgage loan portfolio delinquencies (40.6 percent by outstanding principal balance). Our allowance for loan losses reflects the expected losses associated with these higher-risk loan types. The table below shows the balance of higher-risk conventional mortgage loans and their delinquency rates as of September 30, 2012.

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Summary of Higher-Risk Conventional Mortgage Loans As of September 30, 2012 (dollars in thousands)
High-Risk Loan Type	Total Par Value		Percent Delinquent 30 Days		Percent Delinquent  60 Days		Percent Delinquent 90 Days or More and Nonaccruing
Subprime loans (1)	$	181,444	8.71	%	2.14	%	7.35	%
High loan-to-value loans (2)	41,226		1.26		1.07		13.36
Subprime and high loan-to-value loans (3)	5,550		7.71		4.18		19.24
Total high-risk loans	$	228,220	7.34	%	2.00	%	8.72	%

_______________________

(1) Subprime loans are loans to borrowers with FICO^® credit scores 660 or lower.

(2) High loan-to-value loans have an estimated current loan-to-value ratio greater than 100 percent based on movements in property values in the core-based statistical areas where the property securing the loan is located.

(3) These loans are subprime and also have a current estimated loan-to-value ratio greater than 100 percent.

Our portfolio consists solely of fixed-rate conventionally amortizing first-lien mortgage loans. The portfolio does not include adjustable-rate mortgage loans, pay-option adjustable-rate mortgage loans, interest-only mortgage loans, junior lien mortgage loans, or loans with initial teaser rates.

Mortgage Insurance Companies. We are exposed to credit risk from mortgage insurance companies that provide credit enhancement in place of the participating financial institution and for primary mortgage insurance coverage on individual loans. As of September 30, 2012, we were the beneficiary of primary mortgage insurance coverage on $240.6 million of conventional mortgage loans, and we were the beneficiary of supplemental mortgage insurance coverage on mortgage pools with a total unpaid principal balance of $29.0 million. Eight mortgage insurance companies provide all of the coverage under these policies.

As of October 31, 2012, all of these mortgage insurance companies, with the exception of Triad Guaranty Insurance Corporation, which is no longer rated by any of the NRSROs, have a credit rating of triple-B or lower (or equivalent) by at least one NRSRO as presented in the below table. Ordinarily we do not accept primary mortgage insurance from a mortgage insurance company unless that company is rated at least triple B- by S&P at the time of our investment in the loan (although we may accept lower-rated mortgage insurance provided we obtain additional credit enhancement in such form as we deem appropriate and of substance sufficient to mitigate the risks of relying on such lower rated primary mortgage insurance). Given that only two mortgage insurance companies have a credit rating of at least triple B- as of October 31, 2012, we could develop increasing concentrations of exposure to those mortgage insurance companies. We have established and maintain limits on exposure to individual mortgage insurance companies in an effort to mitigate those concentration risks. However, those exposure limits may have, in turn, led to fewer mortgage loan investment opportunities for us.

We have analyzed our potential loss exposure to all of the mortgage insurance companies and do not expect incremental losses based on these exposures at this time. This expectation is based on the credit-enhancement features of our master commitments (exclusive of mortgage insurance), the underwriting characteristics of the loans that back our master commitments, the seasoning of the loans that back these master commitments, and the strong performance of the loans to date. We have monitored the financial condition of these mortgage insurance companies. Further, we required all new supplemental mortgage insurance policies be with companies rated AA- or higher by S&P. However, none of the eight mortgage insurance companies previously approved by us are currently eligible to write new supplemental mortgage insurance policies for loan pools sold to us. We do not currently invest in mortgage loans that rely on supplemental mortgage insurance to be eligible investments.

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Mortgage Insurance Companies that Provide Mortgage Insurance Coverage (dollars in thousands)
	As of October 31, 2012		September 30, 2012
Mortgage Insurance Company	Mortgage Insurance Company Ratings (S&P/ Moody's/Fitch	Credit Rating Outlook	Balance of Loans with Primary Mortgage Insurance		Primary Mortgage Insurance		Supplemental Mortgage Insurance		Mortgage Insurance Coverage		Percent of Total Mortgage Insurance Coverage
United Guaranty Residential Insurance Corporation	BBB/Baa1/NR	Stable	$	109,003	$	25,655	$	—	$	25,655	46.1	%
Genworth Mortgage Insurance Corporation	B/Ba1/NR	Negative	49,355		11,884		—		11,884		21.3
Mortgage Guaranty Insurance Corporation	B-/B2/NR	Negative	36,692		7,982		—		7,982		14.3
PMI Mortgage Insurance Company (1)	R/Caa3/NR	Negative	14,197		2,996		—		2,996		5.4
CMG Mortgage Insurance Company	BBB-/NR/BBB-	Negative	11,036		2,648		—		2,648		4.8
Radian Guaranty Incorporated	B-/Ba3/NR	Negative	9,122		1,730		—		1,730		3.1
Republic Mortgage Insurance Company (2)	R/NR/NR	N/A	8,559		1,683		649		2,332		4.2
Triad Guaranty Insurance Corporation	NR/NR/NR	N/A	2,602		459		—		459		0.8
			$	240,566	$	55,037	$	649	$	55,686	100.0	%

_______________________

(1) On October 20, 2011, the Arizona Department of Insurance took possession and control of PMI Mortgage Insurance Company and beginning October 24, 2011, PMI Mortgage Insurance Company has been directed to only pay 50 percent of the claim amounts with the remaining claim amounts being deferred until the company is liquidated.

(2) On January 19, 2012, the North Carolina Department of Insurance issued an Order of Supervision providing for immediate

administrative supervision of Republic Mortgage Insurance Co. (RMIC). Under the order, RMIC continues to manage the

business through its employees, and retains its status as a wholly-owned subsidiary of its parent holding company, Old Republic International Corporation. The primary effect is that RMIC may not pay more than 50 percent of any claims allowed under any policy of insurance it has issued. The remaining 50 percent will be deferred and credited to a temporary surplus account on the books of RMIC during an initial period not to exceed one year. Accordingly, all claim payments made on January 19, 2012, and thereafter will be made at the rate of 50 percent.

Deposits

At September 30, 2012, and December 31, 2011, deposits totaled $685.3 million and $654.2 million, respectively.

Term deposits issued in amounts of $100,000 or greater at both September 30, 2012, and December 31, 2011, amounted to $20.0 million, with a maturity date in 2014, and a weighted average rate of 4.71 percent.

Derivative Instruments

All derivative instruments are recorded on the statement of condition at fair value, and are classified as assets or liabilities according to the net fair value of derivatives aggregated by counterparty. Derivative assets' net fair value, net of cash collateral and accrued interest, totaled $529,000 and $16.5 million as of September 30, 2012, and December 31, 2011, respectively. Derivative liabilities' net fair value, net of cash collateral and accrued interest, totaled $949.7 million and $905.3 million as of September 30, 2012, and December 31, 2011, respectively.

The following table presents a summary of the notional amounts and estimated fair values of our outstanding derivative instruments, excluding accrued interest, and related hedged item by product and type of accounting treatment as of September 30, 2012, and December 31, 2011. The notional amount is a factor in determining periodic interest payments or cash flows received and paid. Accordingly, the notional amount does not represent actual amounts exchanged or our overall exposure to credit and market risk. The hedge designation “fair value” represents the hedge classification for transactions that

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qualify for hedge-accounting treatment and hedge changes in fair value attributable to changes in the designated benchmark interest rate, which is LIBOR. The hedge designation "cash flow" represents the hedge classification for transactions that qualify for hedge-accounting treatment and hedge the exposure to variability in expected future cash flows. The hedge designation “economic” represents hedge strategies that do not qualify for hedge accounting, but are acceptable hedging strategies under our risk-management policy.

Hedged Item and Hedge-Accounting Treatment (dollars in thousands)
			September 30, 2012					December 31, 2011
Hedged Item	Derivative	Designation	Notional Amount		Fair  Value			Notional Amount		Fair Value
Advances (1)	Swaps	Fair value	$	6,327,340	$	(546,001	)	$	7,850,557	$	(603,754	)
	Swaps	Economic	140,250		(1,083		)	10,750		(282		)
Total associated with advances			6,467,590		(547,084		)	7,861,307		(604,036		)
Available-for-sale securities	Swaps	Fair value	711,915		(384,968		)	711,915		(379,375		)
	Caps and floors	Economic	300,000		42			300,000		786
Total associated with available-for-sale securities			1,011,915		(384,926		)	1,011,915		(378,589		)
Trading securities	Swaps	Economic	225,000		(34,458		)	225,000		(29,503		)
COs	Swaps	Fair value	7,781,145		87,366			10,743,550		196,640
	Swaps	Economic	800,000		372			—		—
	Forward starting swaps	Cash Flow	1,250,000		(64,855		)	700,000		(31,981		)
Total associated with COs			9,831,145		22,883			11,443,550		164,659
Deposits	Swaps	Fair value	20,000		3,079			20,000		3,986
Total			17,555,650		(940,506		)	20,561,772		(843,483		)
Mortgage delivery commitments			41,506		(43		)	17,734		128
Total derivatives			$	17,597,156	(940,549		)	$	20,579,506	(843,355		)
Accrued interest					(8,327		)			(25,187		)
Cash collateral					(330		)			(20,241		)
Net derivatives					$	(949,206	)			$	(888,783	)
Derivative asset					$	529				$	16,521
Derivative liability					(949,735		)			(905,304		)
Net derivatives					$	(949,206	)			$	(888,783	)

 _______________________

(1)Embedded advance derivatives separated from the the host contract with a notional amount of $118.5 million and a market value of $1.0 million are not included in the table.

The following tables provide a summary of our hedging relationships for fair-value hedges of advances and COs that qualify for hedge accounting by year of contractual maturity. Interest accruals on interest-rate-exchange agreements in qualifying hedge relationships are recorded as interest income on advances and interest expense on COs in the statement of operations. The notional amount of derivatives in qualifying hedge relationships of advances and COs totals $14.1 billion, representing 80.2 percent of all derivatives outstanding as of September 30, 2012. Economic hedges and cash-flow hedges are not included within the two tables below.

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Fair-Value Hedge Relationships of Advances By Year of Contractual Maturity As of September 30, 2012 (dollars in thousands)
										Weighted-Average Yield (3)
	Derivatives					Advances(1)						Derivatives
Maturity	Notional		Fair Value			Hedged Amount		Fair-Value Adjustment(2)		Advances		Receive Floating Rate		Pay Fixed Rate		Net Receive Result
Due in one year or less	$	902,610	$	(13,606	)	$	902,610	$	13,562	3.61	%	0.43	%	3.43	%	0.61	%
Due after one year through two years	833,500		(34,348		)	833,500		34,330		3.22		0.42		3.01		0.63
Due after two years through three years	785,515		(45,316		)	785,515		45,270		3.06		0.44		2.73		0.77
Due after three years through four years	654,695		(56,753		)	654,695		56,559		3.19		0.41		2.93		0.67
Due after four years through five years	1,871,130		(253,373		)	1,871,130		251,201		3.77		0.42		3.59		0.60
Thereafter	1,279,890		(142,605		)	1,279,890		142,376		3.19		0.43		2.88		0.74
Total	$	6,327,340	$	(546,001	)	$	6,327,340	$	543,298	3.41	%	0.42	%	3.17	%	0.66	%

_______________________

(1) Included in the advances hedged amount are $3.6 billion of putable advances, which would accelerate the termination date of the derivative and the hedged item if the put option is exercised.

(2) The fair-value adjustment of hedged advances represents the amounts recorded for changes in the fair value attributable to changes in the designated benchmark interest rate, LIBOR.

(3) The yield for floating-rate instruments and the floating-rate leg of interest-rate swaps is the coupon rate in effect as of September 30, 2012.

Fair-Value Hedge Relationships of Consolidated Obligations By Year of Contractual Maturity As of September 30, 2012 (dollars in thousands)
										Weighted-Average Yield (3)
	Derivatives				CO Bonds (1)							Derivatives
Year of Maturity	Notional		Fair Value		Hedged Amount		Fair-Value Adjustment(2)			CO Bonds		Receive Fixed Rate		Pay Floating  Rate		Net Pay Result
Due in one year or less	$	3,589,950	$	27,999	$	3,589,950	$	(27,880	)	1.59	%	1.59	%	0.32	%	0.32	%
Due after one year through two years	2,143,500		22,572		2,143,500		(22,572		)	1.03		1.11		0.32		0.24
Due after two years through three years	647,695		8,460		647,695		(8,463		)	0.93		0.96		0.32		0.29
Due after three years through four years	690,000		23,822		690,000		(23,830		)	1.51		1.51		0.31		0.31
Due after four years through five years	195,000		2,008		195,000		(2,078		)	0.93		0.93		0.26		0.26
Thereafter	515,000		2,505		515,000		(2,575		)	1.39		1.39		0.13		0.13
Total	$	7,781,145	$	87,366	$	7,781,145	$	(87,398	)	1.34	%	1.37	%	0.30	%	0.27	%

_______________________

(1) Included in the CO Bonds hedged amount are $625.0 million of callable CO Bonds, which would accelerate the termination date of the derivative and the hedged item if the call option is exercised.

(2) The fair-value adjustment of hedged CO bonds represents the amounts recorded for changes in the fair value attributable to changes in the designated benchmark interest rate, LIBOR.

(3) The yield for floating-rate instruments and the floating-rate leg of interest-rate swaps is the coupon rate in effect as of September 30, 2012.

We engage in derivatives directly with affiliates of certain of our members that act as derivatives dealers to us. These derivatives are entered into for our own risk-management purposes and are not related to requests from our members to enter into such contracts. See Item 1 — Notes to the Financial Statements — Note 19 — Transactions with Related Parties for outstanding derivatives with affiliates of members.

For the period ended September 30, 2012, we continue use the LIBOR yield curve to discount cash flows on both collateralized and non-collateralized interest-rate-exchange agreements, as further detailed in Note 17 — Fair Values — Derivative Assets/Liabilities — Interest Rate-Exchange Agreements. The LIBOR yield curve is also used to discount cash flows on our hedged assets or liabilities designated in fair value hedging relationships where the hedged risk is changes in fair value attributable to

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changes in the designated benchmark interest rate, LIBOR. We are aware that certain market participants have begun using the overnight index swap (OIS) yield curve to discount cash flows on collateralized interest rate-exchange agreements. Each period we evaluate market data points to determine the appropriate curve with which to discount cash flows on our collateralized and non-collateralized interest-rate-exchange agreements. As noted above, we concluded that the LIBOR yield curve was still the appropriate curve for discounting at September 30, 2012. Should we determine at some point in the future that the OIS curve is a more appropriate curve, we would use OIS to discount cash flows on collateralized interest rate-exchange agreements while continuing to use the LIBOR yield curve to discount cash flows on associated hedged assets or liabilities in fair value hedging relationships. This could result in increased hedge ineffectiveness that in turn could result in the loss of hedge accounting for certain hedge relationships. Loss of hedge accounting for those hedge relationships would lead to increased net income volatility, which could be material. However, we do not yet know how using OIS to discount the cash flows on our collateralized interest rate-exchange agreements would impact our financial condition and/or results of operations.

Derivative Instruments Credit Risk. We are subject to credit risk on derivative instruments. This risk arises from the risk of counterparty default on the derivative. The amount of loss created by default is the replacement cost of the defaulted contract, net of any collateral held by us or pledged by us to counterparties (unsecured derivatives exposure). We currently receive only cash collateral from counterparties with whom we are in a current positive fair-value position (i.e, we are in the money). The resulting net exposure at fair value is reflected in the derivative instruments table below. We presently pledge only securities collateral to counterparties with whom we are in a current negative fair-value position (i.e, we are out of the money). From time to time, due to timing differences or derivatives valuation differences, and the contractual haircuts applied, we pledge to counterparties securities collateral whose fair value exceeds the current negative fair-value positions with them. The table below details our counterparty credit exposure as of September 30, 2012.

Derivatives Counterparty Credit Exposure (dollars in thousands)
Credit Rating (1)	Notional Amount		Net Derivatives Fair Value Before Collateral			Cash Collateral Pledged From Counterparty			Non-cash Collateral Pledged To Counterparty		Net Credit Exposure to Counterparties
Asset positions with credit exposure:
Double-A	$	25,000	$	50		$	—		$	—	$	50
Single-A	331,500		724			(330		)	—		394
Liability positions with credit exposure:
Single-A	6,635,835		(606,594		)	—			623,084		16,490
Total derivative positions with non-member counterparties to which we had credit exposure	6,992,335		(605,820		)	(330		)	623,084		16,934
Mortgage delivery commitments (2)	41,506		85			—			—		85
Total	$	7,033,841	$	(605,735	)	$	(330	)	$	623,084	$	17,019
Derivative positions without credit exposure:
Double-A	$	25,000
Single-A	7,136,325
Triple-B	3,401,990
Total derivative positions without credit exposure	$	10,563,315

_______________________

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(1) Ratings are obtained from Moody's, Fitch, and S&P. If there is a split rating, the lowest rating is used. In the case where the obligations are unconditionally and irrevocably guaranteed, the rating of the guarantor is used.

(2) Total fair-value exposures related to commitments to invest in mortgage loans are offset by certain pair-off fees. Commitments to invest in mortgage loans are reflected as derivative instruments. We do not collateralize these commitments. However, should the participating financial institution fail to deliver the mortgage loans as agreed, the participating financial institution is charged a fee to compensate us for the nonperformance.

We note that our derivatives instruments could require us to deliver additional collateral to certain of our counterparties if our credit rating is downgraded by an NRSRO, which could increase our exposure to loss in the event of a default by a counterparty to which we were the net creditor at the time of any such default, as further detailed in Item 1 — Notes to the Financial Statements — Note 10 — Derivatives and Hedging Activities. For information on how we mitigate the credit risk from unsecured credit exposures under our derivatives instruments, see Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Financial Condition —Derivative Instruments Credit Risk in the 2011 Annual Report.

We note that during the quarter ended September 30, 2012, we had two Eurozone derivatives counterparties: one domiciled in France and one domiciled in Germany, each of which is rated single-A or higher by all three of the major NRSROs.

We continue to use the same safeguards and approaches to these counterparties to protect against unanticipated exposures arising from possible contagion from the Eurozone financial crisis that are discussed under Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Financial Market Conditions — European Sovereign Debt Crisis in the 2011 Annual Report. We had $6.0 million in unsecured derivatives exposure to these Eurozone financial institutions on September 30, 2012. Our maximum unsecured derivatives exposure to any Eurozone counterparty was $23.9 million during the quarter ended September 30, 2012.

The following counterparties accounted for more than 10 percent of the total notional amount of interest-rate-exchange agreements outstanding (dollars in thousands):

	September 30, 2012
Counterparty	Notional Amount Outstanding		Percent of Total Notional Outstanding		Fair Value
Deutsche Bank AG	$	2,908,965	16.6	%	$	(408,733	)
Barclays Bank PLC	2,203,795		12.6		(70,059		)
JP Morgan Chase Bank	1,951,650		11.1		(100,150		)
Citigroup Financial Products, Inc.	1,843,840		10.5		(73,133		)
UBS AG	1,789,775		10.2		(24,963		)
Goldman Sachs Capital Markets, LP	1,775,220		10.1		(97,710		)

	December 31, 2011
Counterparty	Notional Amount Outstanding		Percent of Total Notional Outstanding		Fair Value
Barclays Bank PLC	$	3,085,095	15.0	%	$	(66,457	)
Deutsche Bank AG	2,957,965		14.4		(407,931		)
Citigroup Financial Products, Inc.	2,749,040		13.4		(73,395		)
Morgan Stanley Capital Services, Inc.	2,414,150		11.7		(115,873		)
Goldman Sachs Bank USA	2,286,725		11.1		(78,858		)

We may deposit funds with these counterparties and their affiliates for short-term money-market investments, including overnight federal funds, term federal funds, and interest-bearing certificates of deposit. We also engage in short-term secured reverse repurchase agreements with affiliates of these counterparties. All of these counterparties affiliates buy, sell, and distribute our COs.

LIQUIDITY AND CAPITAL RESOURCES

Our financial strategies are designed to enable us to expand and contract our assets, liabilities, and capital in response to changes in membership composition and member credit needs. Our primary source of liquidity is our access to the capital

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markets through CO issuance, which is described in Item 1 — Business — Consolidated Obligations in the 2011 Annual Report.

In September 2012, the Office of Finance revised its methodology for the allocation of the proceeds from the issuance of COs when COs cannot be issued in sufficient amounts to satisfy all FHLBank demand for funding during periods of financial distress and when its existing allocation processes are deemed insufficient. In general, this methodology provides that the proceeds in such circumstances will be allocated among the FHLBanks based on relative FHLBank total regulatory capital with FHLBanks with greater total regulatory capital in absolute terms receiving greater allocations of issuance proceeds. The Office of Finance will use this method in such periods unless it determines that there is an overwhelming reason to adopt a different allocation method. As is the case during any instance of a disruption in our ability to access the capital market, market conditions or this allocation could adversely impact our ability to finance our operations, which could adversely impact our financial condition and results of operations.

Outstanding COs and the condition of the market for COs are discussed below under — External Sources of Liquidity. Our equity capital resources are governed by our capital plan, certain portions of which are described under — Capital below as well as by applicable legal and regulatory requirements.

Liquidity

Internal Sources of Liquidity

We maintain structural liquidity to ensure we meet our day-to-day business needs and our contractual obligations. We define structural liquidity as the difference between projected sources and uses of funds (projected net cash flow) adjusted to include certain assumed contingent, noncontractual obligations or behavioral assumptions (cumulative contingent obligations). Cumulative contingent obligations include the assumption that maturing advances are renewed, member overnight deposits are withdrawn at a rate of 50 percent per day and commitments (MPF and other commitments) are taken down at a conservatively projected pace. We define available liquidity as the sources of funds available to us through our normal access to the capital markets, subject to leverage, credit line capacity, and collateral constraints. Our risk-management policy requires us to maintain structural liquidity each day so that any excess of uses over sources is covered by available liquidity for a four-week forecast period and 50 percent of the excess of uses over sources is covered by available liquidity over eight- and 12-week forecast periods. In addition to these minimum requirements, management measures structural liquidity over a three-month forecast period. If the excess of uses over sources is not fully covered by available liquidity over a two-month or three-month forecast period, a management action trigger is breached and senior management is immediately notified so that a decision can be made as to whether immediate remedial action is necessary.

The following table shows our structural liquidity as of September 30, 2012.

Structural Liquidity As of September 30, 2012 (dollars in thousands)
	1 Month			2 Month			3 Months
Projected net cash flow (1)	$	2,486,297		$	(3,517,183	)	$	(4,144,642	)
Less: Cumulative contingent obligations	(4,537,239		)	(6,193,958		)	(7,414,920		)
Equals: Net structural liquidity need	(2,050,942		)	(9,711,141		)	(11,559,562		)
Available borrowing capacity (2)	$	40,402,058		$	48,006,473		$	49,930,675
Ratio of available borrowing capacity to net structural liquidity need	19.70			4.94			4.32
Required ratio	1.00			0.50			0.50
Management action trigger	—			1.00			1.00

_______________________

(1) Projected net cash flow equals projected sources of funds less projected uses of funds based on contractual maturities or expected option exercise periods, as applicable.

(2) Available borrowing capacity is the CO issuance capacity based on achieving leverage up to our internal minimum capital requirement. For information on this internal minimum capital requirement, see — Internal Capital Practices and Policies — Internal Minimum Capital Requirements.

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Finance Agency regulations require us to hold contingency liquidity in an amount sufficient to enable us to cover our liquidity requirements for a minimum of five business days without access to the CO debt markets. We complied with this requirement at all times during the quarter ending September 30, 2012. As of September 30, 2012, and December 31, 2011, we held a surplus of $10.5 billion and $12.8 billion, respectively, of contingency liquidity for the following five days, exclusive of access to the proceeds of CO debt issuance. The following table demonstrates our contingency liquidity as of September 30, 2012.

Contingency Liquidity As of September 30, 2012 (dollars in thousands)
	Cumulative Fifth Business Day
Projected net cash flow (1)	$	(1,748,144	)
Contingency borrowing capacity (exclusive of CO issuances)	12,252,191
Net contingency borrowing capacity	$	10,504,047

_______________________

(1) Projected net cash flow equals projected sources of funds less projected uses of funds based on contractual maturities or expected option exercise periods, as applicable.

In addition, certain Finance Agency guidance requires us to maintain sufficient liquidity, through short-term investments, in an amount at least equal to our anticipated cash outflows under two different scenarios. One scenario assumes that we cannot borrow funds from the capital markets for a period of 15 days and that during that time members do not renew any maturing, prepaid, and put or called advances. The second scenario assumes that we cannot borrow funds from the capital markets for five days and that during that period we will renew maturing and called advances for all members except very large, highly rated members. We were in compliance with these liquidity requirements at all times during the three months ended September 30, 2012.

Further, we are sensitive to maintaining an appropriate funding balance between our assets and liabilities and have an established policy that limits the potential gap between assets inclusive of projected prepayments, funded by liabilities, inclusive of projected calls, maturing in less than one year. The established policy limits this imbalance to a gap of 20 percent of total assets with a management action trigger should this gap exceed 10 percent of total assets. We maintained compliance with this requirement at all times during the three months ended September 30, 2012. During the three months ended September 30, 2012, this gap averaged 5.0 percent (maximum level 6.1 percent and minimum level 4.0 percent). As of September 30, 2012, this gap was 4.8 percent, compared with 9.2 percent at December 31, 2011.

External Sources of Liquidity

FHLBank P&I Funding Contingency Plan Agreement

We have a source of emergency external liquidity through the FHLBank P&I Funding Contingency Plan Agreement. Under the terms of that agreement, in the event we do not fund our principal and interest payments under a CO by deadlines established in the agreement, the other FHLBanks will be obligated to fund any shortfall to the extent that any of the other FHLBanks have a net positive settlement balance (that is, the amount by which end-of-day proceeds received by such FHLBank from the sale of COs on that day exceeds payments by such FHLBank on COs on the same day) in its account with the Office of Finance on the day the shortfall occurs. We would then be required to repay the funding FHLBanks. Neither we nor any of the other FHLBanks have ever drawn upon this agreement.

Debt Financing — Consolidated Obligations

At September 30, 2012, and December 31, 2011, outstanding COs, including both CO bonds and CO discount notes, totaled $40.2 billion and $44.5 billion, respectively.

CO bonds outstanding for which we are primarily liable at September 30, 2012, and December 31, 2011, include issued callable bonds totaling $1.7 billion and $3.0 billion, respectively.

CO discount notes are also a significant funding source for us. CO discount notes are short-term instruments with maturities ranging from overnight to one year. We use CO discount notes primarily to fund short-term advances and investments and

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longer-term advances and investments with short repricing intervals. CO discount notes comprised 29.8 percent and 32.9 percent of the outstanding COs for which we are primarily liable at September 30, 2012, and December 31, 2011, respectively, but accounted for 92.7 percent and 97.5 percent of the proceeds from the issuance of such COs during the nine months endedSeptember 30, 2012 and 2011, respectively, due, in particular, to our frequent overnight CO discount note issuances.

See Item 1 — Notes to the Financial Statements — Note 12 — Consolidated Obligations for additional information on the COs for which we are primarily liable.

Financial Conditions for Consolidated Obligations

We have experienced relatively favorable CO issuance costs and good market access during the period covered by this report. Financial markets were relatively calmer than during the preceding two quarters as uncertainties about European sovereignties and financial institutions abated due, in part, to actions by the European Central Bank to provide liquidity. The U.S. economy grew modestly during the nine months ended September 30, 2012, and employment growth was generally stronger throughout this period than it had been throughout the second half of 2011.

We continue to operate in a prolonged, historically low-interest rate environment as discussed under — Executive Summary — Low-Interest Rate Environment and U.S. Fiscal Policy. Overall, we have experienced relatively low CO issuance costs during the period covered by this report, reflecting the low-interest rate environment together with a flight to quality due to the sovereign debt crisis in Europe, though easing pressures in Europe caused a slight increase in our relative cost of funding. We have experienced good market demand for all tenors of COs with the strongest demand for short-term COs, and have had no difficulty issuing debt in the amounts and structures required to meet our funding and risk-management needs. Throughout the nine months ended September 30, 2012, COs were issued at yields that were generally at or below equivalent-maturity LIBOR swap yields for debt maturing in less than five years, while longer term issues bore funding costs that were typically higher than equivalent maturity LIBOR swap yields. We continue to experience similar pricing into the fourth quarter of 2012. Among the factors that could further shape demand for COs in the fourth quarter, we note the fiscal cliff and Moody's warning of a potential downgrade of the U.S. federal government, as discussed under — Low-Interest Rate Environment and U.S. Fiscal Policy. We further note that the NRSROs have historically indicated that FHLBank credit ratings, including credit ratings for COs, are constrained by the rating of the U.S. federal government. Accordingly, a Moody's downgrade of the U.S. federal government could result in a downgrade of the FHLBanks and COs. For a discussion of how an NRSRO downgrade could impact us, see the 2011 Annual Report — Item 1A — Risk Factors — Our funding costs and/or access to the capital markets and demand for certain of our products could be adversely impacted by S&P's downgrade of the U.S. government's credit ratings and/or any further downgrade of the U.S. government's credit ratings.

Capital

Our total GAAP capital decreased $22.5 million to $3.5 billion at September 30, 2012. The decrease was attributable to our partial excess capital stock repurchase of $237.4 million in March 2012, offset by a net reduction of $29.7 million in accumulated other comprehensive loss, a $140.1 million increase in retained earnings, and the purchase of $46.1 million of capital stock by members during the nine months endedSeptember 30, 2012.

The FHLBank Act and Finance Agency regulations specify that each FHLBank is required to satisfy certain minimum regulatory capital requirements. We were in compliance with these requirements at September 30, 2012, as discussed in Item 1 — Notes to the Financial Statements — Note 14 — Capital.

Our ability to expand in response to member-credit needs is based primarily on the capital-stock requirements for advances. Members without excess stock are required to increase their capital-stock investment as their outstanding advances increase, as described in Item 1 — Business — Capital Resources in the 2011 Annual Report. As discussed in that Item, we may repurchase excess stock in our sole discretion, although we note our continuing moratorium on repurchases of excess stock other than in limited, former member-related instances of insolvency. Although we conducted a partial repurchase of excess stock on March 9, 2012, there are no plans to conduct another excess stock repurchase in 2012. Further, on April 26, 2012, our board of directors adopted a resolution that it will not conduct excess stock repurchases other than in limited, former member-related instances of insolvency without obtaining the Finance Agency's nonobjection, which we do not expect to pursue again in 2012. We will consider whether and how to conduct other repurchases of excess stock as part of our 2013 business planning process.

At September 30, 2012, and December 31, 2011, excess stock totaled $2.0 billion and $2.1 billion, respectively, as set forth in the following table (dollars in thousands):

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	Membership Stock Investment Requirement		Activity-Based Stock Requirement		Total Stock Investment Requirement (1)		Outstanding Class B Capital Stock (2)		Excess Class B Capital Stock
September 30, 2012	$	639,941	$	1,039,539	$	1,679,503	$	3,648,879	$	1,969,376
December 31, 2011	623,793		1,104,877		1,728,692		3,852,777		2,124,085

_______________________

(1) Total stock-investment requirement is rounded up to the nearest $100 on an individual member basis.

(2) Class B capital stock outstanding includes mandatorily redeemable capital stock.

We redeem our capital stock in accordance with our capital plan and applicable law. Capital stock can become subject to redemption based on a member's request for the redemption of its excess stock, upon termination of membership or in such other cases as are set forth in our capital plan and subject to the limitations therein. Our only class of capital stock outstanding is Class B stock. Class B stock is subject to a five-year stock redemption period. For additional information on the redemption of our capital stock, see Item 1 — Business — Capital Resources — Redemption of Excess Stock in the 2011 Annual Report and Item 1 — Business — Capital Resources — Mandatorily Redeemable Capital Stock in the 2011 Annual Report.

Capital stock subject to a stock redemption period is reclassified to mandatorily redeemable capital stock in the liability section of the statement of condition. Mandatorily redeemable capital stock totaled $215.9 million and $227.4 million at September 30, 2012, and December 31, 2011, respectively.

The following table sets forth the amount of mandatorily redeemable capital stock by year of expiry of redemption period at September 30, 2012, and December 31, 2011 (dollars in thousands).

Expiry of Redemption Period	September 30, 2012		December 31, 2011
Due in one year or less	$	80,161	$	—
Due after one year through two years	98		86,598
Due after two years through three years	—		10
Due after three years through four years	134,590		—
Due after four years through five years	1,014		140,821
Total	$	215,863	$	227,429

Capital Rule

The Finance Agency's regulation on FHLBank capital classification and critical capital levels (the Capital Rule), among other things, establishes criteria for four capital classifications and corrective action requirements for FHLBanks that are classified in any classification other than adequately capitalized. The Capital Rule requires the Director of the Finance Agency to determine on no less than a quarterly basis the capital classification of each FHLBank. For additional information on the Capital Rule, see Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources — Capital — Capital Rule in the 2011 Annual Report

By letter dated September 26, 2012, the Acting Director of the Finance Agency notified us that, based on June 30, 2012, financial information, we met the definition of adequately capitalized under the Capital Rule. The Acting Director of the Finance Agency has not yet notified us of our capital classification based on September 30, 2012, financial information.

Internal Capital Practices and Policies

We also take steps as we believe prudent beyond legal or regulatory requirements in an effort to protect our capital, reflected in our capital ratio targets, internal minimum capital requirement in excess of regulatory requirements, and retained earnings target.

Targeted Capital Ratio Operating Range

We target an operating range of 4.0 percent to 7.5 percent for our capital ratio, a range adopted in conjunction with our capital preservation measures. Our capital ratio was 9.2 percent at September 30, 2012, a ratio in excess of the targeted operating range. This results principally from our limited repurchases of excess stock accompanied with a significant decline in

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advances balances since 2008, as discussed under — Executive Summary — Advances Balances.

Internal Minimum Capital Requirement

To provide further protection for our capital base, we maintain an internal minimum capital requirement whereby the amount of paid-in capital stock and retained earnings must exceed the sum of our regulatory capital requirement plus our retained earnings target. As of September 30, 2012, this internal minimum capital requirement equaled $2.7 billion, which was satisfied by our actual regulatory capital of $4.2 billion.

Retained Earnings Target

Our retained earnings target is $875.0 million, a target selected by our board of directors on December 16, 2011. For information on how we select and adjust our retained earnings target, including our response to Finance Agency regulations, orders, or guidance, see Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Internal Capital Practices and Policies — Retained Earnings Target in the 2011 Annual Report.

At September 30, 2012, we had total retained earnings of $538.2 million, consisting of $484.5 million in unrestricted retained earnings and $53.7 million in restricted retained earnings. For information on our restricted retained earnings contribution requirement, see Item 1 — Notes to the Financial Statements — Note 14 — Capital. Amounts in our restricted retained earnings account are not available to pay dividends.

Dividend Limitations

On April 26, 2012, our board of directors adopted a resolution that it would not declare dividends in excess of 20 percent of quarterly net income for the quarter on which the dividend is based for the remainder of 2012 without the Finance Agency's nonobjection. Additionally, on that same day, the board adopted a revision to our retained earnings policy that now provides that when our retained earnings target exceeds the level of our retained earnings, the quarterly dividend payout cannot exceed 40 percent of our earnings for the quarter. This revised policy replaces the prior policy that had limited the quarterly dividend payout to 50 percent of our earnings for the quarter in such instances. For additional information on dividend limitations, see Item 5 — Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities in the 2011 Annual Report.

Off-Balance-Sheet Arrangements and Aggregate Contractual Obligations

Our significant off-balance-sheet arrangements consist of the following:

• commitments that obligate us for additional advances;

 • standby letters of credit;

 • commitments for unused lines-of-credit advances;

 • standby bond-purchase agreements with state housing authorities; and

 • unsettled COs.

Off-balance-sheet arrangements are more fully discussed in Item 1 — Notes to the Financial Statements — Note 18 — Commitments and Contingencies.

Through the second quarter of 2011, we were required to pay 20 percent of our net earnings (after the AHP assessment) to REFCorp to support payment of part of the interest on bonds issued by REFCorp. Additionally, the FHLBanks must annually set aside for the AHP the greater of an aggregate of $100 million or 10 percent of the current year's income before charges for AHP and interest expense on mandatorily redeemable capital stock (but after expenses for REFCorp). Based on our net income of $153.6 million for the nine months endedSeptember 30, 2012, our AHP assessment was $17.2 million. See Item 1 — Business — Assessments in the 2011 Annual Report for additional information regarding REFCorp and AHP.

CRITICAL ACCOUNTING ESTIMATES

The preparation of financial statements in accordance with GAAP requires management to make a number of judgments, estimates, and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities (if applicable), and the reported amounts of income and expenses during the reported periods. Although management believes these judgments, estimates, and assumptions to be reasonably accurate, actual results may differ.

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We have identified five accounting estimates that we believe are critical because they require us to make subjective or complex judgments about matters that are inherently uncertain, and because of the likelihood that materially different amounts would be reported under different conditions or using different assumptions. These estimates include accounting for derivatives, the use of fair-value estimates, accounting for deferred premiums and discounts on prepayable assets, the allowance for loan losses, and other-than-temporary-impairment of investment securities. The Audit Committee of our board of directors has reviewed these estimates. The assumptions involved in applying these policies are discussed in Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Critical Accounting Estimates in the 2011 Annual Report.

As of September 30, 2012, we have not made any significant changes to the estimates and assumptions used in applying our critical accounting policies and estimates from those used to prepare our audited financial statements. Described below are the results of the sensitivity analysis for private-label MBS.

Other-Than-Temporary Impairment of Investment Securities

See Item 1 — Notes to the Financial Statements — Note 6 — Other-Than-Temporary Impairment for additional information related to management's other-than-temporary impairment analysis for the current period.

In addition to evaluating our residential private-label MBS under a base-case (or best estimate) scenario, a cash-flow analysis was also performed for each of these securities under a more stressful housing price index (HPI) scenario that was determined by the OTTI Governance Committee.

Our base-case housing price forecast as of September 30, 2012, assumed current-to-trough home price declines ranging from 0.0 percent (for those housing markets that are believed to have reached their trough) to 4.0 percent. For those markets for which further home-price declines are anticipated, such declines were projected to occur over the three- to nine-month period beginning July 1, 2012. For the vast majority of markets where further home-price declines are anticipated, the declines were projected to range from 1.0 percent to 2.0 percent over the three-month period beginning July 1, 2012. From the trough, home prices were projected to recover using one of five different recovery paths that vary by housing market. The more stressful scenario was based on a housing-price forecast that was five percentage points lower at the trough than the base-case scenario followed by a flatter recovery path. Under the more stressful scenario, current-to-trough home-price declines were projected to range from 5.0 percent to 9.0 percent over the three- to nine-month period beginning July 1, 2012. For most of the housing markets, the declines were projected to occur over the three-month period beginning July 1, 2012. The following table presents projected home-price recovery ranges by month under the base-case and adverse-case scenario.

	Recovery Range of Annualized Rates
Months	Base Case			Adverse Case
1 - 6	0.0%	to	2.8%	0.0%	to	1.9	%
7 - 18	0.0%	to	3.0%	0.0%	to	2.0	%
19 - 24	1.0%	to	4.0%	0.7%	to	2.7	%
25 - 30	2.0%	to	4.0%	1.3%	to	2.7	%
31 - 42	2.0%	to	5.0%	1.3%	to	3.4	%
43 - 66	2.0%	to	6.0%	1.3%	to	4.0	%
Thereafter	2.3%	to	5.6%	1.5%	to	3.8	%

The following table represents the impact on credit-related other-than-temporary impairment using the more stressful scenario of the HPI, described above, compared with actual credit-related other-than-temporary impairment recorded using our base-case HPI assumptions as of September 30, 2012 (dollars in thousands):

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	Credit Losses as Reported						Sensitivity Analysis - Adverse HPI Scenario
For the quarter ending September 30, 2012	Number of Securities	Par Value		Other-Than-Temporary Impairment Credit Loss			Number of Securities	Par Value		Other-Than-Temporary Impairment Credit Loss
Prime	1	$	1,411	$	—		4	$	30,632	$	(426	)
Alt-A	9	199,089		(1,092		)	57	1,130,393		(31,360		)
Subprime	—	—		—			3	2,436		(60		)
Total private-label MBS	10	$	200,500	$	(1,092	)	64	$	1,163,461	$	(31,846	)

RECENT ACCOUNTING DEVELOPMENTS

See Item 1 — Notes to the Financial Statements — Note 2 — Recently Issued Accounting Standards and Interpretations for a discussion of recent accounting developments impacting or that could impact us.

LEGISLATIVE AND REGULATORY DEVELOPMENTS

The legislative and regulatory environment in which we operate continues to undergo rapid change driven principally by reforms under the Housing and Economic Reform Act of 2008, as amended (HERA) and the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the Dodd-Frank Act). We expect HERA and the Dodd-Frank Act as well as plans for housing finance and GSE reform to result in still further changes to this environment. Our business operations, funding costs, rights, obligations, and/or the environment in which we carry out our housing finance mission are likely to continue to be significantly impacted by these changes. Significant regulatory actions and developments for the period covered by this report are summarized below.

Developments under the Dodd-Frank Act Impacting Derivatives Transactions

Definitions of Certain Terms under New Derivatives Requirements. The Dodd-Frank Act will require swap dealers and certain other large users of derivatives to register as “swap dealers” or “major swap participants,” as the case may be, with the U.S. Commodity Futures Trading Commission (the CFTC) and/or the SEC. Based on the definitions in the final rules jointly issued by the CFTC and SEC in April 2012, we will not be required to register as either a major swap participant or as a swap dealer because of the derivative transactions that we enter into for the purposes of hedging and managing our interest-rate risk or any derivative transactions that we may intermediate for our members, although we continue our suspension on member derivatives.

Based on the final rules and accompanying interpretive guidance jointly issued by the CFTC and SEC in July 2012, call and put optionality in certain advances to our members will not be treated as “swaps” as long as the optionality relates solely to the interest rate on the advance and does not result in enhanced or inverse performance or other risks unrelated to the interest rate. Accordingly, our ability to offer these advances to member customers should not be affected by the new derivatives regulations.

Mandatory Clearing of Derivatives Transactions. The Dodd-Frank Act provides for new statutory and regulatory requirements for derivative transactions, including those utilized by us to hedge our interest-rate and other risks. As a result of these requirements, certain derivative transactions will be required to be cleared through a third-party central clearinghouse and traded on regulated exchanges or new swap execution facilities. As further discussed in the 2011 Annual Report under Item 7 — Legislative and Regulatory Developments- Developments under the Dodd-Frank Act Impacting Derivatives Transactions, cleared swaps will be subject to new requirements including mandatory reporting, record-keeping, and documentation requirements established by applicable regulators, and initial and variation margin requirements established by the clearinghouse and its clearing members. The CFTC recently issued guidance regarding the treatment of customer collateral for cleared swaps and proposed additional protections for such collateral.

The implementation timeframe for mandatory clearing of eligible interest-rate swaps is determined according to the effective date of the CFTC's mandatory clearing determinations, which were released in proposed form on July 24, 2012, for interest-rate swaps that are currently clearable. The CFTC is expected to finalize these determinations in November 2012, and we will have to clear eligible interest-rate swaps within 180 days after publication of the final determinations, which we estimate will be during the second quarter 2013.

The CFTC has approved an end-user exception to mandatory clearing that would exempt derivatives transactions that we may intermediate for our members with $10 billion or less in assets as long as the member uses the swaps to hedge or mitigate its commercial risk and the reporting counterparty for such swaps complies with certain additional reporting requirements. As a

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result, any such intermediated swaps would not be subject to mandatory clearing, although such swaps would be subject to applicable new requirements for derivative transactions that are not subject to mandatory clearing requirements (uncleared trades).

Uncleared Derivatives Transactions. The Dodd-Frank Act will also change the regulatory landscape for uncleared trades. While we expect to continue to enter into uncleared trades on a bilateral basis, such trades will be subject to new requirements, including mandatory reporting, recordkeeping, documentation, and minimum margin and capital requirements established by applicable regulators. These requirements are discussed in the 2011 Annual Report.

The CFTC recently finalized rules regarding certain new documentation requirements for uncleared trades. These rules, the external business conduct rules for swap dealers and major swap participants that the CFTC had previously finalized and certain additional rules that have yet to be finalized, will require amendments to the documentation for swaps we enter into with swap dealers. We have adhered to an ISDA protocol to address the new documentation requirements under the external business conduct rules, and we will consider adhering to future ISDA protocols to address the recently finalized new documentation requirements for uncleared trades. The recently finalized rules require new dispute resolution and valuation provisions, new representations regarding applicable insolvency regimes, and credit support modifications to our existing swap documentation. Our swap documentation with swap dealers must comply with these requirements by April 1, 2013. The recently finalized rules also impose requirements for acknowledgments and confirmations of uncleared trades between us and swap dealers. With respect to interest-rate swaps that we enter into with swap dealers, these requirements will be phased in between November 13, 2012, and March 1, 2014. However, we believe that this scheduled phase-in period may be delayed until December 31, 2012, due to a delay in swap dealer registration. This same delay in registration has also delayed the start of swap dealer compliance with certain of the external business conduct rules discussed above beyond their originally scheduled effective date of October 15, 2012. The compliance date for the remaining external business conduct rules is January 1, 2013.

The Dodd-Frank Act also imposes new margin requirements for uncleared trades, which are discussed in the 2011 Annual Report under Item 7 — Legislative and Regulatory Developments—Developments under the Dodd-Frank Act Impacting Derivatives Transactions. The CFTC, the Finance Agency, and other bank regulators proposed margin requirements in 2011 and the CFTC has re-opened the comment period for such requirements on two occasions. The Finance Agency and other bank regulators recently re-opened the comment period for their proposed margin requirements until November 26, 2012. As a result, we do not expect that such requirements will be finalized until sometime in 2013 and we do not expect that they will apply to the Bank until later in 2013 at the earliest.

Recordkeeping and Reporting. Compliance dates for the new recordkeeping and reporting requirements for all of our cleared and uncleared swaps have now been established, based on the effective date for the final rule further defining the term “swap” issued jointly by the CFTC and SEC, which became effective on October 12, 2012. We currently comply with recordkeeping requirements for our swaps that were (or are) in effect on or after July 21, 2010, and beginning on April 10, 2013; we will have to comply with new recordkeeping requirements for swaps entered into on or after April 10, 2013. For interest-rate swaps that we enter into with swap dealers, the swap dealers must comply with reporting requirements applicable to such swaps, including real-time reporting requirements, as of the date these swap dealers register as such. We will be required to comply with reporting requirements, including real-time reporting requirements, for any swaps that we may intermediate for our members, beginning on April 10, 2013.

We, together with the other FHLBanks, will continue to monitor these rulemakings and the overall regulatory process to implement the derivatives reform under the Dodd-Frank Act. We will also continue to work with the other FHLBanks to implement the processes and documentation necessary to comply with the Dodd-Frank Act's new requirements for derivatives.

Developments under the Finance Agency

Advance Notice of Proposed Rulemaking on Stress-Testing Requirements. On October 5, 2012, the Finance Agency issued a notice of proposed rulemaking with a comment deadline of December 4, 2012, that would implement a provision in the Dodd-Frank Act that requires all financial companies with assets over $10 billion to conduct annual stress tests, which will be used to evaluate an institution's capital adequacy under various economic conditions and financial conditions. The Finance Agency proposes to issue annual guidance to describe the baseline, adverse and severely adverse scenarios and methodologies that the FHLBanks must follow in conducting their stress tests, which, as required by the Dodd-Frank Act, would be generally consistent and comparable to those established by the Federal Reserve. An FHLBank would be required to provide an annual report on the results of the stress tests to the Finance Agency and the Federal Reserve and to then publicly disclose a summary of such report within 90 days.

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Proposed Guidance on Collateralization of Advances and Other Credit Products Provided to Insurance Company Members. On October 5, 2012, the Finance Agency published a notice requesting comments on a proposed Advisory Bulletin with a comment deadline of December 4, 2012, which would set forth standards to guide the Finance Agency in its supervision of secured lending to insurance company members by the FHLBanks. The Finance Agency's notice provides that lending to insurance company members exposes FHLBanks to risks that are not associated with advances to the insured depository institution members, arising from different states' statutory and regulatory regimes and the statutory accounting principles and reporting practices. The proposed standards include consideration of, among other things:

• the level of an FHLBank's exposure to insurance companies in relation to its capital structure and retained earnings;

• an FHLBank's control of pledged securities collateral and ensuring it has a first-priority perfected security interest;

• the use of funding agreements between an FHLBank and an insurance company member to document advances and whether such an FHLBank would be recognized as a secured creditor with a first priority security interest in the collateral; and

• the FHLBank's documented framework procedures, methodologies and standards to evaluate an insurance company member's creditworthiness and financial condition, the FHLBanks' valuation of the pledged collateral, and whether the FHLBank has a written plan for the liquidation of insurance company member collateral.

Proposed Order on Qualified Financial Contracts (QFCs). On August 9, 2012, the Finance Agency circulated a proposed order on QFCs with a comment deadline of October 10, 2012, that would be applicable to the FHLBanks as well as Fannie Mae and Freddie Mac. The Finance Agency has indicated that the proposed order is intended to permit the Finance Agency to comply with certain statutory requirements for the transfer of QFCs in the event of the receivership of a Fannie Mae and Freddie Mac. The proposed order sets forth certain recordkeeping and reporting requirements for Fannie Mae and Freddie Mac QFCs. If the order is issued as proposed, each FHLBank will have to, among other things, establish and maintain infrastructure sufficient to meet the recordkeeping and reporting requirements and engage external personnel to audit its compliance with the order on an annual basis.

Other Significant Developments

National Credit Union Administration Proposed Rule on Access to Emergency Liquidity. On July 30, 2012, the National Credit Union Administration published a proposed rule with a comment deadline of September 28, 2012, requiring, among other things, that federally-insured credit unions of $100 million or larger must maintain access to at least one federal liquidity source for use in times of financial emergency and distressed circumstances. This access must be demonstrated through direct or indirect membership in the Central Liquidity Facility (a U.S. government corporation created to improve the general financial stability of credit unions by serving as a liquidity lender to credit unions) or by establishing access to the Federal Reserve's discount window. The proposed rule does not include FHLBank membership as an emergency liquidity source. If the rule is issued as proposed, it may adversely impact our results of operations if it causes our federally insured credit union members to favor these federal liquidity sources over FHLBank membership or advances.

Housing Finance and GSE Reform. Recently, the U.S. Treasury Department (the Treasury Department) announced a set of modifications to the preferred stock purchase agreements between the Treasury Department and the Finance Agency as conservator of Fannie Mae and Freddie Mac to help expedite their wind-down. The changes require all future earnings from the Enterprises to be turned over to the Treasury Department and require the accelerated wind down of their retained mortgage portfolios. By not allowing Fannie Mae and Freddie Mac to retain any profits, these changes effectively ensure that Fannie Mae and Freddie Mac will never be allowed to recapitalize themselves and return to the market in their previous structure. In addition, the Finance Agency recently solicited comments on their proposal to create a new framework for the secondary mortgage market. The Finance Agency has indicated that the framework is intended to create a more efficient and flexible securitization platform for Fannie Mae and Freddie Mac that also would be available to all market participants and interested parties.

As Fannie Mae and Freddie Mac are being wound down, Congress and the administration have been considering various proposals to reform the U.S. housing finance system and the secondary mortgage market. A number of bills have been introduced in Congress in the past several years, although none have proposed specific changes to the FHLBanks. No further legislative action in this area is expected until the next Congress convenes in 2013. It is impossible to determine at this time whether or when Congress will act in this area. The ultimate effects of housing finance and GSE reform on the FHLBanks is unknown and will depend on the legislation or other changes, if any, that ultimately are implemented.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

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Sources and Types of Market and Interest-Rate Risk

Our balance sheet is comprised of different portfolios that require different types of market- and interest-rate-risk management strategies. Sources and types of market and interest-rate risk are described in Item 7A — Quantitative and Qualitative Disclosures About Market Risks — Sources and Types of Market and Interest-Rate Risk in the 2011 Annual Report.

Strategies to Manage Market and Interest-Rate Risk

We use various strategies and techniques to manage our market and interest-rate risk including the following and combinations of the following:

• the issuance of COs that generally match the interest-rate-risk exposures of our assets;

• the use of derivatives and/or COs with embedded options to hedge the interest-rate-risk of our debt (at September 30, 2012, fixed-rate noncallable debt, not hedged by interest-rate swaps, amounted to $14.3 billion, compared with $14.6 billion at December 31, 2011, and fixed-rate callable debt not hedged by interest-rate swaps amounted to $1.1 billion and $843.0 million at September 30, 2012, and December 31, 2011, respectively);

• the issuance of COs together with interest-rate swaps that receive a coupon that offsets the bond coupon and that offsets any optionality embedded in the bond, thereby effectively creating a floating-rate liability (total CO bonds used in conjunction with interest-rate-exchange agreements was $7.8 billion, or 27.8 percent of our total outstanding CO bonds at September 30, 2012, compared with $10.7 billion, or 36.3 percent of total outstanding CO bonds, at December 31, 2011);

• contractual provisions for advances with original fixed maturities of greater than six months that require borrowers to pay us prepayment fees, which make us financially indifferent if such advances are prepaid prior to maturity and protect against a loss of income under certain interest-rate environments;

• the use of the duration extension portfolio (which totaled $2.4 billion at September 30, 2012, as compared with $3.3 billion at December 31, 2011), to hedge our net interest income against the impact of low interest rates, which is discussed in Item 7A — Quantitative and Qualitative Disclosures About Market Risks — Measurement of Market and Interest-Rate Risk — Duration Extension Portfolio in the 2011 Annual Report; and

• the use of callable debt for a portion of our investments in mortgage loans to manage the interest-rate and prepayment risks from these investments.

Each of the foregoing strategies and techniques is more fully discussed in the 2011 Annual Report under Item 7A —Quantitative and Qualitative Disclosures About Market Risks — Strategies to Manage Market and Interest Rate Risk in the 2011 Annual Report.

Measurement of Market and Interest-Rate Risk

Our principal measure of market and interest-rate risk is market value of equity (MVE). MVE is the net economic value of total assets and liabilities, including any off-balance-sheet items. In contrast to the GAAP-based shareholder's equity account, MVE represents the shareholder's equity account in present-value terms. Specifically, MVE equals the difference between the theoretical market value of assets and the theoretical market value of liabilities. MVE, and in particular, the ratio of MVE to the book value of equity (BVE), is therefore a theoretical measure of the current value of shareholder investment based on market rates, spreads, prices, and volatility at the reporting date. BVE is equal to our permanent capital, which consists of the par value of capital stock including mandatorily redeemable capital stock, plus retained earnings. BVE excludes accumulated other comprehensive loss.

We caution that care must be taken to properly interpret the results of the MVE analysis as the theoretical basis for these valuations may not be fully representative of future realized prices. Further, valuations are based on market curves and prices respective of individual assets, liabilities, and derivatives, and therefore are not representative of future net income to be earned by us through the spread between asset market curves and the market curves for funding costs. MVE should not be considered indicative of our market value as a going concern because it does not consider future new business activities, risk-management strategies, or the net profitability of assets after funding costs are subtracted. 

We measure our exposure to market and interest-rate risk using several metrics, including:

• the ratio of MVE to BVE;

• the ratio of MVE to the par value of our Class B Stock (Par Stock), which we refer to as the MVE to Par Stock ratio;

• the ratio of adjusted MVE to Par Stock, which metric removes the impact of market illiquidity on MVE;

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• the ratio of MVE to the market value of assets, which we refer to as the economic capital ratio;

• value at risk (VaR), which measures the change in our MVE to a 99th percent confidence interval, based on a set of stress scenarios using historical interest-rate and volatility movements that have been observed over six-month intervals starting at the most recent month-end and going back monthly to 1978, consistent with Finance Agency regulations;

• duration of equity, which measures percentage change to shareholder value for a 100 basis point shift in rates;

• the duration gap of our assets and liabilities, which is the difference between the estimated durations (percentage change in market value for a 100 basis point shift in rates) of assets and liabilities (including the effect of related hedges) and reflects the extent to which estimated sensitivities to market changes, including, but not limited to, maturity and repricing cash flows for assets and liabilities are matched;

• targeted metrics for the duration extension portfolio and our investments in mortgage loans; and

• the use of an income-simulation model that projects net interest income over a range of potential interest-rate scenarios, including parallel interest-rate shocks, nonparallel interest-rate shocks, and nonlinear changes to our funding curve and LIBOR.

During the quarter ended March 31, 2012, we ceased using alternative measures of VaR and duration of equity, which we had referred to as management VaR and management duration of equity. We had used these metrics to isolate the distortive impact of private-label MBS credit spreads and market illiquidity on VaR and duration of equity. However, these metrics are no longer as important to us due to the ongoing reduction in the size of our investments in private-label MBS and some recovery in the fair values of those investments.

We maintain limits and management action triggers in connection with each of the foregoing metrics. Those limits, management action triggers, and the foregoing market and interest-rate risk metrics are more fully discussed in the 2011 Annual Report under Item 7A — Quantitative and Qualitative Disclosures About Market Risks — Measurement of Market and Interest-Rate Risk in the 2011 Annual Report.

The following table sets forth each of the foregoing metrics together with any targets, associated limits and management actions triggers at September 30, 2012, and December 31, 2011.

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Interest/Market-Rate Risk Metric	At September 30, 2012	At December 31, 2011	Target, Limit or Management Action Trigger at September 30, 2012
MVE	$3.8 billion	$3.7 billion	None
MVE/BVE	90%	86%	None
MVE/Par Stock	104%	95%	100% (target)
Adjusted MVE/Par Stock	109%	108%	102% (management action trigger) and 100% (limit)
Economic Capital Ratio	8.1%	7.2%	4.5% (management action trigger) and 4.0% or lower (limit)
VaR	$71.9 million	$91.3 million	$225.0 million (management action trigger) and $275.0 million (limit)
Duration of Equity	+0.3 years	+1.1 years	+/- 3.5 years (management action trigger) and +/- 4.0 years (limit) lowered from +/- 5.0 years at December 31, 2011
Duration Gap	+0.3 months	+0.9 months	None
Duration Extension Portfolio VaR Limit (1)	$1.7 million	$5.2 million	$125.0 million (limit)
Duration Extension Portfolio Interest Rate Shock	Market yields on GSE debt would have to rise by 180 basis points for the management action trigger to be breached and by 230 basis points for the limit to be breached	Market yields on GSE debt would have to rise by 68 basis points for the management action trigger to be breached and by 118 basis points for the limit to be breached	75 basis points (management action trigger) and 25 basis points (limit)
MPF Portfolio VaR Limit	$41.6 million	$38.9 million	$68.8 million (management action trigger)
Income Simulation based on an instantaneous rise in interest rates of 300 basis points	Return on equity falls to 43 basis points above the average yield on three-month LIBOR	Return on equity falls to 24 basis points above the average yield on three-month LIBOR	Projected return on equity falls below three-month LIBOR over the following 12 month horizon (management action trigger)

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(1) This metric is calculated net of any unrealized gain or loss.

The following chart displays our MVE to BVE and MVE to Par Stock ratios at prior period ends.

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Certain Market and Interest-Rate Risk Metrics under Potential Interest-Rate Scenarios

The sensitivities of market value of equity and the duration of equity to potential interest-rate scenarios are also metrics we monitor. The following table presents certain market and interest-rate risk metrics under different interest-rate scenarios.

	September 30, 2012
	Down(1) 300	Down(1) 200	Down(1) 100	Base	Up 100	Up 200	Up 300
MVE/BVE	94%	92%	92%	90%	91%	89%	86%
MVE/Par Stock	107%	106%	106%	104%	104%	102%	99%
Duration of Equity	+1.1 years	+0.9 years	+1.5 years	+0.3 years	+0.6 years	+2.4 years	+3.8 years
Return on Equity less LIBOR	3%	3%	3%	2%	2%	1%	—%
Net Income percent change from base	(13)%	(13)%	(9)%	—%	13%	27%	35%

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(1) Given the current environment of low interest rates, downward rate shocks are floored as they approach zero, and therefore may not be fully representative of the indicated rate shock.

	December 31, 2011
	Down(1) 300	Down(1) 200	Down(1) 100	Base	Up 100	Up 200	Up 300
MVE/BVE	91%	89%	88%	86%	86%	84%	82%
MVE/Par Stock	100%	98%	97%	95%	95%	93%	90%
Duration of Equity	+2.2 years	+1.8 years	+0.9 years	+1.1 years	+1.0 years	+2.6 years	+4.0 years
Return on Equity less LIBOR	2%	2%	2%	1%	1%	1%	1%
Net Income percent change from base	(5)%	(5)%	(1)%	—%	60%	109%	151%

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(1) Given the current environment of low interest rates, downward rate shocks are floored as they approach zero, and therefore may not be fully representative of the indicated rate shock.

VaR at Different Confidence Levels

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The table below presents the historical simulation VaR estimate as of September 30, 2012, and December 31, 2011, which represents the estimates of potential reduction to our MVE from potential future changes in interest rates and other market factors. Estimated potential market value loss exposures are expressed as a percentage of the current MVE and are based on historical behavior of interest rates and other market factors over a 120-business-day time horizon.

	Value-at-Risk (Gain) Loss Exposure
	September 30, 2012					December 31, 2011
Confidence Level	% of MVE (1)		$ million			% of MVE (1)		$ million
50%	(0.15	)%	$	(5.7	)	(0.15	)%	$	(5.5	)
75%	0.56		21.2			0.69		25.2
95%	1.36		51.5			1.83		67.0
99%	1.90		71.9			2.49		91.3

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(1)Loss exposure is expressed as a percentage of base MVE.

ITEM 4.     CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

Our senior management is responsible for establishing and maintaining a system of disclosure controls and procedures designed to ensure that information required to be disclosed by us in the reports filed or submitted under the Securities Exchange Act of 1934 is recorded, processed, summarized, and reported within the time periods specified in the rules and forms of the SEC. Our disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Securities Exchange Act of 1934 is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure. In designing and evaluating our disclosure controls and procedures, we recognize that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and our management necessarily is required to apply its judgment in evaluating the cost-benefit relationship of controls and procedures.

We have evaluated the effectiveness of the design and operation of our disclosure controls and procedures, with the participation of the president and chief executive officer and chief financial officer, as of the end of the period covered by this report. Based on that evaluation, our president and chief executive officer and chief financial officer have concluded that our disclosure controls and procedures were effective at a reasonable assurance level as of the end of the fiscal quarter covered by this report.

Changes in Internal Control over Financial Reporting

During the quarter ended September 30, 2012, there were no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II — OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

On April 20, 2011, we filed a complaint (the original complaint) in the Superior Court Department of the Commonwealth of Massachusetts in Suffolk County, against various securities dealers, underwriters, control persons, issuers/depositors, and credit rating agencies based on our investments in certain private-label MBS issued by 115 securitization trusts for which we originally paid approximately $5.8 billion. Since the original complaint was filed, the defendants filed certain notices of removal to remove the case to the United States District Court for the District of Massachusetts. On March 9, 2012, our motion to remand the matter to state court was denied.  

On June 29, 2012, we filed an amended complaint (the amended complaint) in the United States District Court for the District of Massachusetts against various securities dealers, underwriters, control persons, issuers/depositors, and credit rating agencies

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based on our investments in certain private-label MBS issued by 111 securitization trusts for which we originally paid approximately $5.7 billion. The amended complaint asserts, as the original complaint had asserted, claims based on untrue or misleading statements in the sale of securities, signing or circulating securities documents that contained material misrepresentations and omissions, negligent misrepresentation, unfair or deceptive trade practices, fraud by the rating agencies, and controlling person liability. We are seeking various forms of relief including rescission, recovery of damages, recovery of purchase consideration plus interest (less income received to date), and recovery of reasonable attorneys' fees and costs of suit.

The amended complaint names the following defendants and their affiliates and subsidiaries and defendants under their control or controlled by affiliates or subsidiaries thereof: Ally Financial Inc. (formerly GMAC Inc.), Bank of America Corporation; Barclays Capital Inc.; The Bear Stearns Companies LLC; Capital One Financial Corporation; Citigroup, Inc.; Countrywide Financial Corporation; Credit Suisse (USA), Inc.; DB Structured Products, Inc.; DB U.S. Financial Market Holding Corporation; EMC Mortgage Corporation; Fitch; Impac Mortgage Holdings, Inc.; JPMorgan Chase & Co.; The McGraw-Hill Companies, Inc.; Moody's Corporation; Morgan Stanley; Nomura Holding America, Inc.; RBS Holdings USA Inc.; UBS Americas Inc.; WaMu Capital, Corp.; and Wells Fargo & Company.

On October 11, 2012, certain defendants filed motions to dismiss the complaint.

The original complaint also named certain individuals due to their association and control over Lehman Brothers Holdings Inc. and its affiliates and subsidiaries and entities controlled by Lehman Brothers Holdings Inc.'s affiliates and subsidiaries. We have since been able to reach a settlement agreement with those defendants in an amount that is not material to our financial statements.

Bank of America Rhode Island, N.A., which is affiliated with Bank of America Corporation but is not a defendant in the complaint, held approximately 26.8 percent of our capital stock as of September 30, 2012. RBS Citizens N.A., which is affiliated with RBS Holdings USA Inc., but is not a defendant in the complaint, held approximately 13.3 percent of our capital stock as of September 30, 2012.

From time to time, we are subject to various pending legal proceedings arising in the normal course of business. After consultation with legal counsel, we do not anticipate that the ultimate liability, if any, arising out of these matters will have a material adverse effect on our financial condition or results of operations.

ITEM 1A. RISK FACTORS

In addition to the risk factors below and other risks described herein, readers should carefully consider the risk factors set forth in the 2011 Annual Report that could materially impact our business, financial condition, or future results. The risks described below, elsewhere in this report, and in the 2011 Annual Report are not the only risks facing us. Additional risks and uncertainties not currently known to us or that we currently deem immaterial may also materially impact us.

CREDIT RISKS

We are subject to credit-risk exposures related to the loans that back our investments. Increased delinquency rates and credit losses beyond those currently expected could adversely impact the yield on or value of those investments.

We invested in private-label MBS until the fourth quarter of 2007. These investments are backed by prime, subprime, and/or Alt-A hybrid and pay-option adjustable-rate mortgage loans. Although we only invested in senior tranches with the highest long-term debt rating when purchasing private-label MBS, many of these securities are projected to sustain credit losses under current assumptions, and have been downgraded by various NRSROs. See Part I — Item 2 — Management’s Discussion and Analysis of Financial Condition and Results of Operations — Financial Condition — Investments for a description of our portfolio of investments in these securities.

As described under Item 7 — Management's Discussion and Analysis of Financial Condition and Results of Operations — Critical Accounting Estimates in the 2011 Annual Report, other-than-temporary-impairment assessment is a subjective and complex determination by management.

High rates of delinquency and increasing loss-severity trends experienced on some of the loans underlying the MBS in our portfolio, as well as challenging macroeconomic factors, such as continuing high unemployment levels and the number of troubled residential mortgage loans, have caused us to use relatively stressful assumptions for other-than-temporary-impairment assessments of private-label MBS. These assumptions resulted in projected future credit losses, thereby causing other-than-temporary impairment losses from certain of these securities. We incurred credit losses of $1.1 million for private-label MBS

109

that we determined were other-than-temporarily impaired for the three months ended September 30, 2012. If macroeconomic trends or collateral credit performance within our private-label MBS portfolio deteriorate further than currently anticipated, or if foreclosures or similar activity is delayed or impeded, even more stressful assumptions, including, but not limited to, lower house prices, higher loan-default rates, and higher loan-loss severities may be used by us in future other-than-temporary impairment assessments. As a possible outcome, we may recognize additional other-than-temporary impairment charges, which could be substantial. For example, as of September 30, 2012, a cash-flow analysis was also performed for each of these securities under a more stressful housing price scenario. The more stressful scenario was based on a housing price forecast that was five percentage points lower at the trough than the base-case scenario followed by a flatter recovery path. Under this more stressful scenario, we are projected to realize an additional $30.8 million in credit losses.

We have also invested in securities issued by HFAs with an amortized cost of $192.0 million as of September 30, 2012. Generally, these securities' cash flows are based on the performance of the underlying loans, although these securities do include credit enhancements as well. Although our policies require that HFA securities must carry a credit rating of double-A (or equivalent) or higher as of the date of purchase, some have since been downgraded and, when applicable, some of the related bond insurers have been downgraded. Further, the fair values of some of our HFA securities have also fallen. Gross unrealized losses on these securities totaled $28.4 million at September 30, 2012. Although we have determined that none of these securities is other-than-temporarily impaired at September 30, 2012, should the underlying loans underperform our projections, we could realize credit losses from these securities.

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.

110

ITEM 6.  EXHIBITS

Number	Exhibit Description
31.1	Certification of the president and chief executive officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of the chief financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification of the president and chief executive officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	Certification of the chief financial officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) 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.

Date	FEDERAL HOME LOAN BANK OF BOSTON (Registrant)
November 9, 2012	By:	/s/	Edward A. Hjerpe III
			Edward A. Hjerpe III President and Chief Executive Officer
November 9, 2012	By:	/s/	Frank Nitkiewicz
			Frank Nitkiewicz Executive Vice President and Chief Financial Officer

111

EX-31.1

EXHIBIT 31.1

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

for the President and Chief Executive Officer

I, Edward A. Hjerpe III, certify that:

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

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;

4The registrant's other certifying officer 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-(f)) for the registrant and have:

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

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

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

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

5.The registrant's other certifying officer 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:	November 9, 2012	/s/ Edward A. Hjerpe III
		Edward A. Hjerpe III
		President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

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

for the Chief Financial Officer

I, Frank Nitkiewicz, certify that:

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

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;

4The registrant's other certifying officer 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-(f)) for the registrant and have:

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

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

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

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

5.The registrant's other certifying officer 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:	November 9, 2012	/s/ Frank Nitkiewicz
		Frank Nitkiewicz
		Executive Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

Certification by the President and Chief Executive Officer

Pursuant to 18 U.S.C. Section 1350,

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

I, Edward A. Hjerpe III, President and Chief Executive Officer of the Federal Home Loan Bank of Boston (“Registrant”) certify that, to the best of my knowledge:

1.The Registrant's Quarterly Report on Form 10-Q for the period ended September 30, 2012 (“Report”), fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Date:	November 9, 2012	/s/ Edward A. Hjerpe III
		Edward A. Hjerpe III
		President and Chief Executive Officer

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

EX-32.2

EXHIBIT 32.2

Certification by the Chief Financial Officer

Pursuant to 18 U.S.C. Section 1350,

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

I, Frank Nitkiewicz, Executive Vice President and Chief Financial Officer of the Federal Home Loan Bank of Boston (“Registrant”) certify that, to the best of my knowledge:

1.The Registrant's Quarterly Report on Form 10-Q for the period ended September 30, 2012 (“Report”), fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Date:	November 9, 2012	/s/ Frank Nitkiewicz
		Frank Nitkiewicz
		Executive Vice President and Chief Financial Officer

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

XML

Consolidated Obligations (Tables)

9 Months Ended

Sep. 30, 2012

Debt Disclosure [Abstract]

CO Bonds by Year of Contractual Maturity [Table Text Block]

The following table sets forth the outstanding CO bonds for which we were primarily liable at September 30, 2012, and December 31, 2011, by year of contractual maturity (dollars in thousands):

	September 30, 2012					December 31, 2011
Year of Contractual Maturity	Amount			Weighted Average Rate (1)		Amount			Weighted Average Rate (1)
Due in one year or less	$	10,501,520		1.60	%	$	12,825,580		1.27	%
Due after one year through two years	6,133,520			1.49		7,196,250			2.04
Due after two years through three years	2,697,160			2.25		2,776,845			2.42
Due after three years through four years	2,771,570			2.48		1,964,000			3.20
Due after four years through five years	2,350,255			2.03		1,832,350			2.34
Thereafter	3,474,230			3.10		2,938,350			3.90
Total par value	27,928,255			1.95	%	29,533,375			2.03	%
Premiums	248,542					179,113
Discounts	(25,296		)			(29,833		)
Hedging adjustments	87,398					196,805
	$	28,238,899				$	29,879,460

_______________________

(1)The CO bonds' weighted-average rate excludes concession fees.

CO Bonds by Call Feature [Table Text Block]

Our CO bonds outstanding at September 30, 2012, and December 31, 2011, included (dollars in thousands):

	September 30, 2012		December 31, 2011
Par value of CO bonds
Noncallable and non-putable	$	26,195,255	$	26,535,375
Callable	1,733,000		2,998,000
Total par value	$	27,928,255	$	29,533,375

CO Bonds by Year of Contractual Maturity or Next Call Date [Table Text Block]

The following is a summary of the CO Bonds for which we are primarily liable at September 30, 2012, and December 31, 2011, by year of contractual maturity or next call date for callable CO bonds (dollars in thousands):

Year of Contractual Maturity or Next Call Date	September 30, 2012		December 31, 2011
Due in one year or less	$	12,041,520	$	14,425,580
Due after one year through two years	6,196,520		7,234,250
Due after two years through three years	2,627,160		2,531,845
Due after three years through four years	2,786,570		1,849,000
Due after four years through five years	2,300,255		1,387,350
Thereafter	1,976,230		2,105,350
Total par value	$	27,928,255	$	29,533,375

CO Bonds by Interest-rate-payment Type [Table Text Block]

The following table sets forth the CO bonds for which we were primarily liable by interest-rate-payment type at September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012		December 31, 2011
Par value of CO bonds
Fixed-rate	$	22,803,255	$	25,473,375
Simple variable-rate	4,760,000		3,350,000
Step-up	365,000		710,000
Total par value	$	27,928,255	$	29,533,375

CO Discount Notes [Table Text Block]

Outstanding CO discount notes for which we were primarily liable, all of which are due within one year, were as follows (dollars in thousands):

	Book Value		Par Value		Weighted Average Rate (1)
September 30, 2012	$	11,993,572	$	11,995,000	0.12	%
December 31, 2011	$	14,651,793	$	14,652,040	0.01	%

_______________________

(1)The CO discount notes' weighted-average rate represents a yield to maturity excluding concession fees.

XML

Held-to-Maturity Securities (Narratives) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of Held-to-maturity Securities [Line Items]
Net premium (discounts) of held-to-maturity securities	$ (507.8)	$ (536.4)
Other Than Mortgage-backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Net premium (discounts) of held-to-maturity securities	2.4	3.6
MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Net premium (discounts) of held-to-maturity securities	$ (510.1)	$ (540.0)

XML

Available-for-Sale Securities (Major Security Types) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 5,797,013	[1]	$ 5,328,759	[1]
Unrealized Gains Amounts Recorded in Accumulated Other Comprehensive Loss	68,341		60,546
Unrealized Losses Amounts Recorded in Accumulated Other Comprehensive Loss	(101,258)		(109,106)
Fair Value	5,764,096		5,280,199
Supranational institutions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	510,971	[1]	504,630	[1]
Unrealized Gains Amounts Recorded in Accumulated Other Comprehensive Loss	0		0
Unrealized Losses Amounts Recorded in Accumulated Other Comprehensive Loss	(37,555)		(35,388)
Fair Value	473,416		469,242
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	307,859	[1],[2]	561,942	[1],[2]
Unrealized Gains Amounts Recorded in Accumulated Other Comprehensive Loss	366	[2]	2,370	[2]
Unrealized Losses Amounts Recorded in Accumulated Other Comprehensive Loss	0	[2]	0	[2]
Fair Value	308,225	[2]	564,312	[2]
U.S. government-owned corporations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	339,598	[1]	338,169	[1]
Unrealized Gains Amounts Recorded in Accumulated Other Comprehensive Loss	0		0
Unrealized Losses Amounts Recorded in Accumulated Other Comprehensive Loss	(45,998)		(53,325)
Fair Value	293,600		284,844
GSEs [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,132,594	[1]	2,750,131	[1]
Unrealized Gains Amounts Recorded in Accumulated Other Comprehensive Loss	33,577		52,020
Unrealized Losses Amounts Recorded in Accumulated Other Comprehensive Loss	(17,705)		(19,730)
Fair Value	2,148,466		2,782,421
Other Than Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,291,022	[1]	4,154,872	[1]
Unrealized Gains Amounts Recorded in Accumulated Other Comprehensive Loss	33,943		54,390
Unrealized Losses Amounts Recorded in Accumulated Other Comprehensive Loss	(101,258)		(108,443)
Fair Value	3,223,707		4,100,819
U.S. Government Guaranteed - Residential MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	76,397	[1]	90,882	[1]
Unrealized Gains Amounts Recorded in Accumulated Other Comprehensive Loss	560		346
Unrealized Losses Amounts Recorded in Accumulated Other Comprehensive Loss	0		0
Fair Value	76,957		91,228
GSEs – Residential MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,328,012	[1]	978,998	[1]
Unrealized Gains Amounts Recorded in Accumulated Other Comprehensive Loss	33,505		5,810
Unrealized Losses Amounts Recorded in Accumulated Other Comprehensive Loss	0		0
Fair Value	2,361,517		984,808
GSEs – Commercial MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	101,582	[1]	104,007	[1]
Unrealized Gains Amounts Recorded in Accumulated Other Comprehensive Loss	333		0
Unrealized Losses Amounts Recorded in Accumulated Other Comprehensive Loss	0		(663)
Fair Value	101,915		103,344
MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,505,991	[1]	1,173,887	[1]
Unrealized Gains Amounts Recorded in Accumulated Other Comprehensive Loss	34,398		6,156
Unrealized Losses Amounts Recorded in Accumulated Other Comprehensive Loss	0		(663)
Fair Value	$ 2,540,389	[3]	$ 1,179,380	[3]

[1] Amortized cost of available-for-sale securities includes adjustments made to the cost basis of an investment for accretion, amortization, collection of cash, and fair-value hedge accounting adjustments.

[2] Consists of corporate debentures guaranteed by the Federal Deposit Insurance Corporation (the FDIC) under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. government.

[3] MBS are not presented by contractual maturity because their expected maturities will likely differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay obligations with or without call or prepayment fees.

XML

Allowance for Credit Losses (Credit Quality Indicators) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012		Dec. 31, 2011
Mortgage Loans Past Due [Line Items]
Past due 30-59 days delinquent	$ 54,348		$ 56,788
Past due 60-89 days delinquent	16,653		17,629
Past due 90 days or more delinquent	75,994		80,801
Total past due	146,995		155,218
Total current loans	3,307,983		2,979,627
Total mortgage loans	3,454,978		3,134,845
In process of foreclosure, included above	34,110	[1]	39,757	[1]
Serious delinquency rate	2.21%	[2]	2.59%	[2]
Past due 90 days or more still accruing interest	24,754		24,925
Loans on nonaccrual status	51,240	[3]	55,876	[3]
Number of days past due, loans at serious delinquent status	90 days
Conventional Mortgage Loan [Member]
Mortgage Loans Past Due [Line Items]
Past due 30-59 days delinquent	38,867		41,311
Past due 60-89 days delinquent	12,907		11,656
Past due 90 days or more delinquent	51,240		55,876
Total past due	103,014		108,843
Total current loans	2,940,443		2,710,526
Total mortgage loans	3,043,457		2,819,369
In process of foreclosure, included above	22,784	[1]	32,344	[1]
Serious delinquency rate	1.70%	[2]	1.99%	[2]
Past due 90 days or more still accruing interest	0		0
Loans on nonaccrual status	51,240	[3]	55,876	[3]
Government Loan Member [Member]
Mortgage Loans Past Due [Line Items]
Past due 30-59 days delinquent	15,481		15,477
Past due 60-89 days delinquent	3,746		5,973
Past due 90 days or more delinquent	24,754		24,925
Total past due	43,981		46,375
Total current loans	367,540		269,101
Total mortgage loans	411,521		315,476
In process of foreclosure, included above	11,326	[1]	7,413	[1]
Serious delinquency rate	6.02%	[2]	7.90%	[2]
Past due 90 days or more still accruing interest	24,754		24,925
Loans on nonaccrual status	$ 0	[3]	$ 0	[3]

[1] Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu of foreclosure has been reported.

[2] Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the recorded investment in the total loan portfolio class.

[3] Includes conventional mortgage loans with contractual principal or interest payments 90 days or more past due and not accruing interest.

XML

Held-to-Maturity Securities Fair Value and Unrealized Losses (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	$ 30,480	$ 259,335
Less than 12 Months, Unrealized Losses	(47)	(4,698)
12 Months or More, Fair Value	1,605,562	1,583,147
12 Months or More, Unrealized Losses	(363,865)	(613,793)
Total Fair Value	1,636,042	1,842,482
Total Unrealized Losses	(363,912)	(618,491)
HFA Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	334	418
Less than 12 Months, Unrealized Losses	(1)	(2)
12 Months or More, Fair Value	153,689	150,968
12 Months or More, Unrealized Losses	(28,401)	(34,457)
Total Fair Value	154,023	151,386
Total Unrealized Losses	(28,402)	(34,459)
GSEs – Residential MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	30,146	239,995
Less than 12 Months, Unrealized Losses	(46)	(558)
12 Months or More, Fair Value	65,930	41,723
12 Months or More, Unrealized Losses	(333)	(547)
Total Fair Value	96,076	281,718
Total Unrealized Losses	(379)	(1,105)
Private-Label Residential MBS[Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	0	18,922
Less than 12 Months, Unrealized Losses	0	(4,138)
12 Months or More, Fair Value	1,364,825	1,369,550
12 Months or More, Unrealized Losses	(330,538)	(572,326)
Total Fair Value	1,364,825	1,388,472
Total Unrealized Losses	(330,538)	(576,464)
ABS Backed by Home Equity Loans [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Fair Value	21,118	20,906
12 Months or More, Unrealized Losses	(4,593)	(6,463)
Total Fair Value	21,118	20,906
Total Unrealized Losses	(4,593)	(6,463)
MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	30,146	258,917
Less than 12 Months, Unrealized Losses	(46)	(4,696)
12 Months or More, Fair Value	1,451,873	1,432,179
12 Months or More, Unrealized Losses	(335,464)	(579,336)
Total Fair Value	1,482,019	1,691,096
Total Unrealized Losses	$ (335,510)	$ (584,032)

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Consolidated Obligations (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
CO Bonds [Abstract]
Total	$ 28,238,899		$ 29,879,460
Percent of fixed-rate CO bonds swapped to a floating rate	33.50%		42.50%
Percent of variable-rate CO bonds swapped to a different variable-rate index	11.60%
COs – Discount Notes [Abstract]
Book Value	11,993,572		14,651,793
COs - Bonds [Member]
CO Bonds [Abstract]
Due in one year or less	10,501,520		12,825,580
Due after one year through two years	6,133,520		7,196,250
Due after two years through three years	2,697,160		2,776,845
Due after three years through four years	2,771,570		1,964,000
Due after four years through five years	2,350,255		1,832,350
Thereafter	3,474,230		2,938,350
Par Value	27,928,255		29,533,375
Due in one year or less, Weighted average rate	1.60%	[1]	1.27%	[1]
Due after one year through two years, Weighted average rate	1.49%	[1]	2.04%	[1]
Due after two years through three years Weighted average rate	2.25%	[1]	2.42%	[1]
Due after three years through four years, Weighted average rate	2.48%	[1]	3.20%	[1]
Due after four years through five years, Weighted average rate	2.03%	[1]	2.34%	[1]
Thereafter, Weighted average rate	3.10%	[1]	3.90%	[1]
Total, Weighted average rate	1.95%	[1]	2.03%	[1]
Premiums	248,542		179,113
Discounts	(25,296)		(29,833)
Hedging adjustment	87,398		196,805
Total	28,238,899		29,879,460
Discount Notes [Member]
COs – Discount Notes [Abstract]
Book Value	11,993,572		14,651,793
Par Value	11,995,000		14,652,040
Weighted Average Rate	0.12%	[2]	0.01%	[2]
Noncallable and non-putable [Member] | COs - Bonds [Member]
CO Bonds [Abstract]
Par Value	26,195,255		26,535,375
Callable [Member] | COs - Bonds [Member]
CO Bonds [Abstract]
Par Value	1,733,000		2,998,000
Earlier of Contractual Maturity or Next Call Date [Member] | COs - Bonds [Member]
CO Bonds [Abstract]
Due in one year or less	12,041,520		14,425,580
Due after one year through two years	6,196,520		7,234,250
Due after two years through three years	2,627,160		2,531,845
Due after three years through four years	2,786,570		1,849,000
Due after four years through five years	2,300,255		1,387,350
Thereafter	1,976,230		2,105,350
Fixed-rate [Member] | COs - Bonds [Member]
CO Bonds [Abstract]
Par Value	22,803,255		25,473,375
Simple variable rate [Member] | COs - Bonds [Member]
CO Bonds [Abstract]
Par Value	4,760,000		3,350,000
Step-up [Member] | COs - Bonds [Member]
CO Bonds [Abstract]
Par Value	$ 365,000		$ 710,000

[1] The CO bonds' weighted-average rate excludes concession fees.

[2] The CO discount notes' weighted-average rate represents a yield to maturity excluding concession fees.

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Transactions with Related Parties (Tables)

9 Months Ended

Sep. 30, 2012

Related Party Transactions [Abstract]

Schedule of Related Party Transactions, Capital Stock [Table Text Block]

The following table presents member holdings of 10 percent or more of total capital stock outstanding at September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012				December 31, 2011
	Capital Stock Outstanding		Percent of Total		Capital Stock Outstanding		Percent of Total
Bank of America Rhode Island, N.A. (1)	$	978,084	26.8	%	$	1,084,710	28.2	%
RBS Citizens N.A.	484,517		13.3		515,748		13.4

_________________________

(1) Capital stock outstanding at September 30, 2012, and December 31, 2011, includes $1.9 million and $2.2 million, respectively, held by CW Reinsurance Company, a subsidiary of Bank of America Corporation.

Schedule of Related Party Transactions, Advances and Accrued Interest Receivable [Table Text Block]

The following table presents outstanding advances to related parties and total accrued interest receivable from those advances as of September 30, 2012, and December 31, 2011 (dollars in thousands):

	Par Value of Advances		Percent of Total Par Value of Advances		Total Accrued Interest Receivable		Percent of Total Accrued Interest Receivable on Advances
As of September 30, 2012
RBS Citizens N.A.	$	3,520,085	15.1	%	$	646	1.6	%
Bank of America Rhode Island, N.A.	600,323		2.6		893		2.2
As of December 31, 2011
RBS Citizens N.A.	$	4,620,022	18.8	%	$	335	0.7	%
Bank of America Rhode Island, N.A.	96,261		0.4		454		1.0

Schedule of Related Party Transactions, Advances Activity [Table Text Block]

The following table presents an analysis of advances activity with related parties for the nine months endedSeptember 30, 2012 (dollars in thousands):

			For the Nine Months Ended September 30, 2012
	Balance at December 31, 2011		Disbursements to Members		Payments from Members			Balance at September 30, 2012
RBS Citizens N.A.	$	4,620,022	$	12,250,570	$	(13,350,507	)	$	3,520,085
Bank of America Rhode Island, N.A.	96,261		1,511,042		(1,006,980		)	600,323

Schedule of Related Party Transactions, Interest Income [Table Text Block]

We recognized interest income on outstanding advances from the above members during the three and nine months endedSeptember 30, 2012, and 2011, as follows (dollars in thousands):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
RBS Citizens N.A.	$	3,155	$	2,645	$	8,367	$	9,158
Bank of America Rhode Island, N.A.	2,137		3,175		5,114		11,142

Schedule of Related Party Transactions, Derivatives [Table Text Block]

The following table presents an analysis of outstanding derivatives with affiliates of related parties at September 30, 2012, and December 31, 2011 (dollars in thousands):

			September 30, 2012				December 31, 2011
Derivatives Counterparty	Affiliate Member	Primary Relationship	Notional Amount		Percent of Total Derivatives (1)		Notional Amount		Percent of Total Derivatives (1)
Bank of America, N.A.	Bank of America Rhode Island, N.A.	Dealer	$	1,041,150	5.9	%	$	973,750	4.7	%
Royal Bank of Scotland, PLC	RBS Citizens, N.A.	Dealer	95,000		0.5		96,300		0.5

_________________________

(1)The percent of total derivatives outstanding is based on the stated notional amount of all derivatives outstanding.

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Other-Than-Temporary Impairment (Tables)

9 Months Ended

Sep. 30, 2012

Other-Than-Temporary Impairment Analysis [Abstract]

Other than Temporary Impairment, Cash Flow Analyses, By Counterparty [Table Text Block]

The following table provides additional data on who performs these cash-flow analyses for us (dollars in thousands).

	September 30, 2012
	Number of Securities	Par Value		Amortized Cost		Carrying Value		Fair Value
FHLBank of San Francisco	166	$	2,166,292	$	1,673,141	$	1,283,775	$	1,357,009
FHLBank of Chicago	16	22,728		22,095		21,014		18,319
Our own cash-flow projections	12	65,071		52,846		39,754		42,573

Recovery Ranges of Housing Price Change [Table Text Block]

Under those recovery paths, home prices were projected to increase as follows:

Months	Recovery Range of
1-6	0.0	%	to	2.8%
7-18	0.0	%	to	3.0%
19-24	1.0	%	to	4.0%
25-30	2.0	%	to	4.0%
31-42	2.0	%	to	5.0%
43-66	2.0	%	to	6.0%
Thereafter	2.3	%	to	5.6%

Significant Inputs for OTTI [Table Text Block]

			Significant Inputs
			Projected Prepayment Rates				Projected Default Rates				Projected Loss Severities				Current Credit Enhancement
Private-label MBS by Year of Securitization	Par Value		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent
Private-label residential MBS
Prime (1)
2004 and prior	$	1,411	6.3	%	6.3	%	30.0	%	30.0	%	47.7	%	47.7	%	19.1	%	19.1	%
Alt-A (1)
2007	$	11,310	2.8	%	2.8	%	74.8	%	74.8	%	50.8	%	50.8	%	36.4	%	36.4	%
2006	153,662		4.0		2.8 - 6.5		69.4		52.1 - 79.6		53.1		50.8 - 55.7		21.2		0.0 - 35.5
2005	34,117		5.7		5.7		54.3		54.3		55.3		55.3		—		—
Total Alt-A	$	199,089	4.3	%	2.8 - 6.5		67.1	%	52.1 - 79.6		53.4	%	50.8 - 55.7		18.4	%	0.0 - 36.4

_______________________

(1)Securities are classified in the table above based upon the current performance characteristics of the underlying loan pool and therefore the manner in which the loan pool backing the security has been modeled (as prime, Alt-A, or subprime), rather than their classification of the security at the time of issuance.

Total Securities Other-than-Temporarily Impaired QTD [Table Text Block]

The following table sets forth our securities for which other-than-temporary impairment credit losses were recognized in the three months ending September 30, 2012 (dollars in thousands). Securities are classified in the table below based on their classifications at the time of issuance.

	September 30, 2012
Other-Than-Temporarily Impaired Investment	Par Value		Amortized Cost		Carrying Value		Fair Value
Private-label residential MBS – Prime	$	1,411	$	1,411	$	1,040	$	1,040
Private-label residential MBS – Alt-A	199,089		145,328		103,488		114,646
Total other-than-temporarily impaired securities	$	200,500	$	146,739	$	104,528	$	115,686

Total Securities Other-than-Temporarily Impaired during the Life of the Security [Table Text Block]

The following table sets forth our securities for which other-than-temporary impairment credit losses were recognized during the life of the security through September 30, 2012 (dollars in thousands). Securities are classified in the table below based on their classifications at the time of issuance.

	September 30, 2012
Other-Than-Temporarily Impaired Investment	Par Value		Amortized Cost		Carrying Value		Fair Value
Private-label residential MBS – Prime	$	73,848	$	63,484	$	47,198	$	55,612
Private-label residential MBS – Alt-A	1,814,813		1,320,029		933,949		1,045,635
ABS backed by home equity loans – Subprime	5,685		5,040		3,867		4,376
Total other-than-temporarily impaired securities	$	1,894,346	$	1,388,553	$	985,014	$	1,105,623

Credit Losses and Net Amount of Impairment Losses [Table Text Block]

The following table sets forth other-than-temporary impairment credit losses that were recognized for the three and nine months endedSeptember 30, 2012, by investment classification (dollars in thousands). Securities are classified in the table below based on the classification at the time of issuance.

	For the Three Months Ended September 30, 2012								For the Nine Months Ended September 30, 2012
Other-Than-Temporarily Impaired Investment	Total Other-Than-Temporary Impairment Losses on Investment Securities			Net Amount of Impairment Losses Reclassified to Accumulated Other Comprehensive Loss		Net Other-Than-Temporary Impairment Losses on Investment Securities, Credit Portion			Total Other-Than-Temporary Impairment Losses on Investment Securities			Net Amount of Impairment Losses Reclassified to (from) Accumulated Other Comprehensive Loss			Net Other-Than-Temporary Impairment Losses on Investment Securities, Credit Portion
Private-label residential MBS – Prime	$	(371	)	$	371	$	—		$	(371	)	$	371		$	—
Private-label residential MBS – Alt-A	(1,706		)	614		(1,092		)	(13,847		)	8,306			(5,541		)
ABS backed by home equity loans – Subprime	—			—		—			—			(3		)	(3		)
Total other-than-temporarily impaired securities	$	(2,077	)	$	985	$	(1,092	)	$	(14,218	)	$	8,674		$	(5,544	)

Rollforward of the Amounts Related to Credit Losses Recognized into Earnings [Table Text Block]

The following table presents a roll-forward of the amounts related to credit losses recognized into earnings. The roll-forward is the amount of credit losses on investment securities on which we recognized a portion of other-than-temporary impairment charges into accumulated other comprehensive loss (dollars in thousands).

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Balance at beginning of period	$	520,654		$	562,358		$	544,833		$	523,881
Additions:
Credit losses for which other-than-temporary impairment was not previously recognized	—			—			—			46
Additional credit losses for which an other-than-temporary impairment charge was previously recognized(1)	1,092			7,210			5,544			73,542
Reductions:
Securities matured during the period	(8,065		)	(15,889		)	(32,697		)	(42,089		)
Increase in cash flows expected to be collected which are recognized over the remaining life of the security	(2,609		)	(731		)	(6,608		)	(2,432		)
Balance at end of period	$	511,072		$	552,948		$	511,072		$	552,948

_______________________

(1) For the three months ended September 30, 2012, and 2011, additional credit losses for which an other-than-temporary impairment charge was previously recognized relate to all securities that were also previously impaired prior to July 1, 2012 and 2011. For the nine months endedSeptember 30, 2012 and 2011, additional credit losses for which an other-than-temporary impairment charge was previously recognized relate to all securities that were also previously impaired prior to January 1, 2012 and 2011.

Other than Temporary Impiarment, Non-Credit Losses Portion [Table Text Block]

The following table presents a roll-forward of the amounts related to the net noncredit portion of other-than-temporary impairment losses on held-to-maturity securities included in accumulated other comprehensive loss (dollars in thousands).

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Balance at beginning of period	$	(420,392	)	$	(488,887	)	$	(450,996	)	$	(621,528	)
Amounts reclassified (to) from accumulated other comprehensive loss:
Noncredit portion of other-than-temporary impairment losses on held-to-maturity securities	(2,013		)	(5,231		)	(10,931		)	(16,910		)
Reclassification adjustment of noncredit component of impairment losses included in net income relating to held-to-maturity securities	1,028			4,105			2,257			58,516
Net amount of impairment losses reclassified (to) from accumulated other comprehensive loss	(985		)	(1,126		)	(8,674		)	41,606
Accretion of noncredit portion of impairment losses on held-to-maturity securities	17,838			35,288			56,131			125,197
Balance at end of period	$	(403,539	)	$	(454,725	)	$	(403,539	)	$	(454,725	)

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Affordable Housing Program (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Affordable Housing Program [Abstract]
Principal outstanding in AHP advances	$ 98,700,000		$ 98,700,000		$ 97,900,000
Affordable Housing Program [Roll Forward]
Balance at beginning of year			34,241,000	23,138,000	23,138,000
AHP expense for the period	5,675,000	5,573,000	17,160,000	10,592,000	17,812,000
AHP direct grant disbursements			(4,313,000)	(4,707,000)	(5,775,000)
AHP subsidy for AHP advance disbursements			(1,427,000)		(1,371,000)
Return of previously disbursed grants and subsidies			72,000		437,000
Balance at end of period	$ 45,733,000		$ 45,733,000		$ 34,241,000

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Derivatives and Hedging Activities (Derivatives in Statement of Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging instruments	$ (2,683)	$ (17,919)	$ (8,764)	$ (25,373)
Net losses on derivatives and hedging activities	(2,086)	(17,474)	(8,509)	(23,527)
Interest-Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives and hedged items in fair-value hedging relationships	597	445	255	1,846
Derivatives not designated as hedging instruments	(3,243)	(17,952)	(10,105)	(24,674)
Interest-Rate Cap or Floors [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging instruments	(207)	(1,147)	(745)	(2,298)
Mortgage-Delivery Commmitment [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging instruments	$ 767	$ 1,180	$ 2,086	$ 1,599

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Transactions with Other FHLBanks (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Schedule of Other Transactions [Line Items]
Debt obligations transferred from other Federal Home Loan Banks, par amount			$ 112,000,000
Debt obligations transferred from other Federal Home Loan Banks, fair value			130,276,000	0
FHLBank of Chicago [Member]
Schedule of Other Transactions [Line Items]
MPF transaction-services fee expense	$ 347,000	$ 285,000	$ 966,000	$ 843,000

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Other-Than-Temporary Impairment (Cash Flow Analysis By Counterparties) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012 Securities
FHLBank of San Francisco [Member]
Other than Temporary Impairment, Disclosure [Line Items]
Number of Securities	166
Par Value	$ 2,166,292
Amortized Cost	1,673,141
Carrying Value	1,283,775
Fair Value	1,357,009
FHLBank of Chicago [Member]
Other than Temporary Impairment, Disclosure [Line Items]
Number of Securities	16
Par Value	22,728
Amortized Cost	22,095
Carrying Value	21,014
Fair Value	18,319
FHLBank of Boston [Member]
Other than Temporary Impairment, Disclosure [Line Items]
Number of Securities	12
Par Value	65,071
Amortized Cost	52,846
Carrying Value	39,754
Fair Value	$ 42,573

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Derivatives and Hedging Activities (Narrative) (Details) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011	Sep. 30, 2012		Sep. 30, 2011
Derivative [Line Items]
Loss recognized in other comprehensive income for hedged items in cash-flow hedging relationships	$ 10,448,000		$ 25,158,000	$ 32,874,000		$ 26,843,000
Aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a net liability position	949,600,000			949,600,000
Post-haircut value of collateral already posted	800,900,000			800,900,000
Rating Downgrade from AA+ to AA or AA - [Member]
Derivative [Line Items]
Additional collateral	39,664,000	[1],[2]		39,664,000	[1],[2]
Rating Downgrade From AA- to A+, A or A -[Member]
Derivative [Line Items]
Additional collateral	79,106,000	[1],[2]		79,106,000	[1],[2]
Rating Downgrade From A- to below A- [Member]
Derivative [Line Items]
Additional collateral	14,000,000	[1],[2]		14,000,000	[1],[2]
AA+ Rating [Member]
Derivative [Line Items]
Additional collateral	$ 15,900,000			$ 15,900,000

[1] Ratings are expressed in this table according to S&P's conventions but include the equivalent of such rating by Moody's and they represent the lower of our S&P and Moody's ratings.

[2] Additional collateral of $15.9 million could be called by counterparties as of September 30, 2012, at our current credit rating of AA+ (based on the lower of our credit ratings from S&P and Moody's) and is not included in the table.

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Fair Values (Fair Value Measured on Nonrecurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	$ 0	[1]
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	4,319,536	[1]
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	1,595,734	[1]
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
REO	356		905
Total assets recorded at fair value on a nonrecurring basis	19,759		149,857
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
REO	0		0
Total assets recorded at fair value on a nonrecurring basis	0		0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
REO	0		0
Total assets recorded at fair value on a nonrecurring basis	0		0
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
REO	356		905
Total assets recorded at fair value on a nonrecurring basis	19,759		149,857
Private-Label Residential MBS[Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	19,403		148,952
Private-Label Residential MBS[Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	0		0
Private-Label Residential MBS[Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	0		0
Private-Label Residential MBS[Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	$ 19,403		$ 148,952

[1] Private-label residential MBS and HFA securities are categorized as Level 3. Private-label residential MBS that have suffered other than temporary impairments are measured at fair value on a nonrecurring basis. See the recurring and nonrecurring tables below for more details.

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Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified			9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Accumulated Other Comprehensive Income (Loss) [Member]	Sep. 30, 2011 Accumulated Other Comprehensive Income (Loss) [Member]	Sep. 30, 2012 Net Unrealized Loss Relating to Hedging Activities [Member]	Sep. 30, 2011 Net Unrealized Loss Relating to Hedging Activities [Member]	Sep. 30, 2012 Pension and Postretirement Benefits [Member]	Sep. 30, 2011 Pension and Postretirement Benefits [Member]	Sep. 30, 2012 Available-for-sale Securities [Member] Net Unrealized Loss on Available-for-Sale Securities [Member]	Sep. 30, 2011 Available-for-sale Securities [Member] Net Unrealized Loss on Available-for-Sale Securities [Member]	Sep. 30, 2012 Held-to-maturity Securities [Member] Net Noncredit Portion of Other-Than-Temporary Impairment Losses on Held-to-Maturity Securities [Member]	Sep. 30, 2011 Held-to-maturity Securities [Member] Net Noncredit Portion of Other-Than-Temporary Impairment Losses on Held-to-Maturity Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ (504,674)	$ (534,411)	$ (534,411)	$ (638,111)	$ (32,308)	$ (341)	$ (2,547)	$ (1,049)	$ (48,560)	$ (15,193)	$ (450,996)	$ (621,528)
Other comprehensive income (loss)			29,737	121,394	(32,863)	(26,832)	(500)	(224)	15,643	(18,353)	47,457	166,803
Ending balance	$ (504,674)	$ (534,411)	$ (504,674)	$ (516,717)	$ (65,171)	$ (27,173)	$ (3,047)	$ (1,273)	$ (32,917)	$ (33,546)	$ (403,539)	$ (454,725)

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Commitments and Contingencies (Details) (USD $)	9 Months Ended
	Sep. 30, 2012 Housing_Authorities		Dec. 31, 2011 Housing_Authorities
Loss Contingencies [Line Items]
Value of the guarantees related to standby letters of credit	$ 17,863,000		$ 16,048,000
Number of state housing authorities standby bond purchase Agreements	1		1
Maximum term of commitments to invest in mortgage loans	45 days
Carrying amount of pledged collateral securities	791,100,000		765,700,000
Other FHLBanks [Member]
Loss Contingencies [Line Items]
Par amounts of other FHLBanks' outstanding COs for which we are jointly and severally liable	634,600,000,000		647,700,000,000
Minimum [Member]
Loss Contingencies [Line Items]
Term of standby letters of credit	2 months
Maximum [Member]
Loss Contingencies [Line Items]
Term of standby letters of credit	20 years
Standby Letters of Credit Outstanding [Member]
Loss Contingencies [Line Items]
Off-balance-sheet Commitments Expiring Within One Year	848,249,000	[1]	832,140,000	[1]
Off-balance-sheet Commitments Expire After One Year	377,808,000	[1]	402,932,000	[1]
Total Off-balance Sheet Commitments	1,226,057,000	[1]	1,235,072,000	[1]
Value of the guarantees related to standby letters of credit	531,000		625,000
Commitments for Standby Bond Purchases [Member]
Loss Contingencies [Line Items]
Off-balance-sheet Commitments Expiring Within One Year	151,615,000		0
Off-balance-sheet Commitments Expire After One Year	10,000,000		191,065,000
Total Off-balance Sheet Commitments	161,615,000		191,065,000
Commitments for Unused Lines of Credit - Advances [Member]
Loss Contingencies [Line Items]
Off-balance-sheet Commitments Expiring Within One Year	1,304,244,000	[2]	1,287,084,000	[2]
Off-balance-sheet Commitments Expire After One Year	0	[2]	0	[2]
Total Off-balance Sheet Commitments	1,304,244,000	[2]	1,287,084,000	[2]
Commitments for Unused Lines of Credit - Advances [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Period for commitments for unused line-of-credit advances	12 months
Commitments to Make Aditional Advances [Member]
Loss Contingencies [Line Items]
Off-balance-sheet Commitments Expiring Within One Year	67,838,000		26,264,000
Off-balance-sheet Commitments Expire After One Year	61,895,000		54,281,000
Total Off-balance Sheet Commitments	129,733,000		80,545,000
Commitments to Invest in Mortgage Loans [Member]
Loss Contingencies [Line Items]
Off-balance-sheet Commitments Expiring Within One Year	41,506,000		17,734,000
Off-balance-sheet Commitments Expire After One Year	0		0
Total Off-balance Sheet Commitments	41,506,000		17,734,000
Unsettled CO Bonds, at Par [Member]
Loss Contingencies [Line Items]
Off-balance-sheet Commitments Expiring Within One Year	475,000,000	[3]	165,300,000	[3]
Off-balance-sheet Commitments Expire After One Year	0	[3]	0	[3]
Total Off-balance Sheet Commitments	475,000,000	[3]	165,300,000	[3]
Unsettled CO Bonds, at Par [Member] | Interest-Rate Swaps [Member]
Loss Contingencies [Line Items]
Total Off-balance Sheet Commitments	265,000,000		15,000,000
Standby Letters of Credit Issuance Commitments [Member]
Loss Contingencies [Line Items]
Off-balance-sheet Commitments Expiring Within One Year	26,400,000		21,100,000
Off-balance-sheet Commitments Expire After One Year	$ 900,000

[1] This row excludes commitments to issue standby letters of credit that expire within one year totaling $26.4 million and commitments that expire after one year totaling $900,000 as of September 30, 2012. Also excluded are commitments to issue standby letters of credit that expire within one year totaling $21.1 million at December 31, 2011.

[2] Commitments for unused line-of-credit advances are generally for periods of up to 12 months. Since many of these commitments are not expected to be drawn upon, the total commitment amount does not necessarily indicate future liquidity requirements.

[3] We had $265.0 million in unsettled CO bonds that were hedged with associated interest-rate swaps at September 30, 2012. We had $15.0 million in unsettled CO bonds that were hedged with associated interest-rate swaps at December 31, 2011.

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Deposits (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Deposits [Abstract]
Hedging adjustment	$ 3,100,000	$ 4,000,000
Interest bearing deposit demand and overnight	623,302,000	600,155,000
Interest bearing deposit term	21,894,000	22,401,000
Interest bearing deposit other	3,585,000	4,571,000
Noninterest-bearing other	36,547,000	27,119,000
Total Deposits	685,328,000	654,246,000
Aggregate amount of time deposits with a denomination of $100,000 or more	$ 20,000,000	$ 20,000,000

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Allowance for Credit Losses (Impact of Loss Mitigation Features) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
Allowance for Credit Losses [Abstract]
Total estimated losses	$ 10,077		$ 10,274
Less: estimated losses in excess of the first-loss account, to be absorbed by participating financial institutions	(3,879)		(1,622)
Less: estimated performance-based credit-enhancement fees available for recapture	(684)		(852)
Net allowance for credit losses	$ 5,514	$ 6,114	$ 7,800	$ 7,181	$ 7,181	$ 8,653

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies [Text Block]

Commitments and Contingencies

Joint and Several Liability. COs are backed by the financial resources of the FHLBanks. The Finance Agency has authority to require any FHLBank to repay all or a portion of the principal and interest on COs for which another FHLBank is the primary obligor. No FHLBank has ever been asked or required to repay the principal or interest on any CO on behalf of another FHLBank. We evaluate the financial condition of the other FHLBanks primarily based on known regulatory actions, publicly available financial information, and individual long-term credit-rating action as of each period-end presented. Based on this evaluation, as of September 30, 2012, and through the filing of this report, we do not believe that it is reasonably likely that we will be required to repay the principal or interest on any CO on behalf of another FHLBank.

We have considered applicable FASB guidance and determined it is not necessary to recognize a liability for the fair value of our joint and several liability for all of the COs. The joint and several obligation is mandated by Finance Agency regulations and is not the result of an arms-length transaction among the FHLBanks. The FHLBanks have no control over the amount of the guaranty or the determination of how each FHLBank would perform under the joint and several obligation. Because the FHLBanks are subject to the authority of the Finance Agency as it relates to decisions involving the allocation of the joint and several liability for the FHLBanks' COs, the FHLBanks' joint and several obligation is excluded from the initial recognition and measurement provisions. Accordingly, we have not recognized a liability for our joint and several obligation related to other FHLBanks' COs at September 30, 2012, and December 31, 2011. The par amounts of other FHLBanks' outstanding COs for which we are jointly and severally liable totaled approximately $634.6 billion and $647.7 billion at September 30, 2012, and December 31, 2011, respectively. See Note 12 — COs for additional information.

Off-Balance-Sheet Commitments

The following table sets forth our off-balance-sheet commitments as of September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012						December 31, 2011
	Expire within one year		Expire after one year		Total		Expire within one year		Expire after one year		Total
Standby letters of credit outstanding (1)	$	848,249	$	377,808	$	1,226,057	$	832,140	$	402,932	$	1,235,072
Commitments for standby bond purchases	151,615		10,000		161,615		—		191,065		191,065
Commitments for unused lines of credit - advances (2)	1,304,244		—		1,304,244		1,287,084		—		1,287,084
Commitments to make additional advances	67,838		61,895		129,733		26,264		54,281		80,545
Commitments to invest in mortgage loans	41,506		—		41,506		17,734		—		17,734
Unsettled CO bonds, at par (3)	475,000		—		475,000		165,300		—		165,300

__________________________

(1) This row excludes commitments to issue standby letters of credit that expire within one year totaling $26.4 million and commitments that expire after one year totaling $900,000 as of September 30, 2012. Also excluded are commitments to issue standby letters of credit that expire within one year totaling $21.1 million at December 31, 2011.

(2) Commitments for unused line-of-credit advances are generally for periods of up to 12 months. Since many of these commitments are not expected to be drawn upon, the total commitment amount does not necessarily indicate future liquidity requirements.

(3) We had $265.0 million in unsettled CO bonds that were hedged with associated interest-rate swaps at September 30, 2012. We had $15.0 million in unsettled CO bonds that were hedged with associated interest-rate swaps at December 31, 2011.

Standby Letters of Credit. Standby letters of credit are executed with members or housing associates for a fee.A standby letter of credit is a financing arrangement between us and a member or housing associate pursuant to which we agree to fund the associated member's or housing associate's obligation to a third-party beneficiary should that member or housing associate fail to fund such obligation. If we are required to make payment for a beneficiary's draw, the payment amount is converted into a collateralized advance to the member or housing associate. The original terms of these standby letters of credit range fromfinal expiries in two months to 20 years. Our unearned fees for the value of the guarantees related to standby letters of credit are recorded in other liabilities and totaled $531,000 and $625,000 at September 30, 2012, and December 31, 2011, respectively.

We monitor the creditworthiness of our members and housing associates that have standby letter of credit agreements outstanding based on our evaluations of the financial condition of the member or housing associate. We review available financial data, which can include regulatory call reports filed by depository institution members, regulatory financial statements filed with the appropriate state insurance department by insurance company members, audited financial statements of housing associates, SEC filings, and rating-agency reports to ensure that potentially troubled members are identified as soon as possible. In addition, we have access to most members' regulatory examination reports. We analyze this information on a regular basis.

Standby letters of credit are fully collateralized at the time of issuance. Based on our credit analyses and collateral requirements, we have not deemed it necessary to record any additional liability on these commitments.

Standby Bond-Purchase Agreements. We enter into standby bond-purchase agreements with state housing authorities whereby we, for a fee, agree to purchase and hold the housing authority’s bonds until the designated remarketing agent can find an investor or the housing authority repurchases the bonds according to a schedule established by the standby bond-purchase agreement. Each standby bond-purchase agreement specifies the terms that would require us to purchase the bonds. The standby bond-purchase commitments we entered into expire between one and three years following the start of the commitment, currently no later than 2013. At each of September 30, 2012, and December 31, 2011, we had standby bond-purchase agreements with one state housing authority. During the nine months endedSeptember 30, 2012, and year ended December 31, 2011, we were not required to purchase any bonds under these agreements.

Commitments to Invest in Mortgage Loans. Commitments to invest in mortgage loans are generally for periods not to exceed 45 business days. Such commitments are recorded as derivatives at their fair values on the statement of condition.

Pledged Collateral. We execute new derivatives with counterparties with long-term ratings of single-A (or equivalent) or better by both S&P and Moody’s. All derivatives are subject to master-netting agreements which include bilateral-collateral agreements. Derivatives with counterparties rated lower than single-A (or equivalent) are permitted only if they reduce exposure to that counterparty. As of September 30, 2012, and December 31, 2011, we had pledged as collateral securities with a carrying value, including accrued interest, of $791.1 million and $765.7 million, respectively, to counterparties that have credit-risk exposure to us related to derivatives. These amounts pledged as collateral were subject to contractual agreements whereby some counterparties had the right to sell or repledge the collateral.

Legal Proceedings. We are subject to various legal proceedings arising in the normal course of business from time to time. 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.

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Available-for-Sale Securities (Securities with Unrealized Losses) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 0	$ 0
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Fair Value	891,042	978,455
12 Months or More, Unrealized Losses	(101,258)	(109,106)
Total Fair Value	891,042	978,455
Total Unrealized Losses	(101,258)	(109,106)
Supranational institutions [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Fair Value	473,416	469,242
12 Months or More, Unrealized Losses	(37,555)	(35,388)
Total Fair Value	473,416	469,242
Total Unrealized Losses	(37,555)	(35,388)
U.S. government-owned corporations
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Fair Value	293,600	284,844
12 Months or More, Unrealized Losses	(45,998)	(53,325)
Total Fair Value	293,600	284,844
Total Unrealized Losses	(45,998)	(53,325)
GSEs [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Fair Value	124,026	121,025
12 Months or More, Unrealized Losses	(17,705)	(19,730)
Total Fair Value	124,026	121,025
Total Unrealized Losses	(17,705)	(19,730)
Other Than Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value		0
Less than 12 Months, Unrealized Losses		0
12 Months or More, Fair Value		875,111
12 Months or More, Unrealized Losses		(108,443)
Total Fair Value		875,111
Total Unrealized Losses		(108,443)
GSEs – Commercial MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value		0
Less than 12 Months, Unrealized Losses		0
12 Months or More, Fair Value		103,344
12 Months or More, Unrealized Losses		(663)
Total Fair Value		103,344
Total Unrealized Losses		$ (663)

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Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2012

Accumulated Other Comprehensive Income (Loss) [Abstract]

Schedule of Accumulated Other Comprehensive Loss [Table Text Block]

The following table presents a summary of changes in accumulated other comprehensive loss for the nine months ended September 30, 2012, and 2011 (dollars in thousands):

	Net Unrealized Loss on Available-for-Sale Securities			Net Noncredit Portion of Other-Than-Temporary Impairment Losses on Held-to-Maturity Securities			Net Unrealized Loss Relating to Hedging Activities			Pension and Postretirement Benefits			Total Accumulated Other Comprehensive Loss
Balance, December 31, 2010	$	(15,193	)	$	(621,528	)	$	(341	)	$	(1,049	)	$	(638,111	)
Other comprehensive income (loss)	(18,353		)	166,803			(26,832		)	(224		)	121,394
Balance, September 30, 2011	$	(33,546	)	$	(454,725	)	$	(27,173	)	$	(1,273	)	$	(516,717	)
Balance, December 31, 2011	$	(48,560	)	$	(450,996	)	$	(32,308	)	$	(2,547	)	$	(534,411	)
Other comprehensive (loss) income	15,643			47,457			(32,863		)	(500		)	29,737
Balance, September 30, 2012	$	(32,917	)	$	(403,539	)	$	(65,171	)	$	(3,047	)	$	(504,674	)

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Derivatives and Hedging Activities (Credit Risk Exposure) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Derivative [Line Items]
Total net exposure at fair value	$ 859	$ 36,567
Net exposure after cash collateral	529	16,521
Accrued interest receivable	95,950	116,517
Cash Collateral And Related Accrued Interest [Member]
Derivative [Line Items]
Less: cash collateral received from counterparties, including accrued interest	(330)	(20,046)
Derivative Financial Instruments, Assets [Member]
Derivative [Line Items]
Accrued interest receivable	$ 1,664	$ 988

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Derivatives and Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Value of Derivative Instruments [Table Text Block]

The following table presents the fair value of derivative instruments as of September 30, 2012 (dollars in thousands):

	Notional Amount of Derivatives		Derivative Assets			Derivative Liabilities
Derivatives designated as hedging instruments
Interest-rate swaps	$	14,840,400	$	115,475		$	(964,100	)
Interest-rate futures / forwards	1,250,000		—			(64,855		)
Total derivatives designated as hedging instruments	16,090,400		115,475			(1,028,955		)
Derivatives not designated as hedging instruments
Interest-rate swaps	1,165,250		537			(35,932		)
Interest-rate caps or floors	300,000		42			—
Mortgage-delivery commitments (1)	41,506		85			(128		)
Total derivatives not designated as hedging instruments	1,506,756		664			(36,060		)
Total notional amount of derivatives	$	17,597,156
Total derivatives before netting and collateral adjustments			116,139			(1,065,015		)
Netting adjustments (2)			(115,280		)	115,280
Cash collateral received from counterparties, including accrued interest			(330		)	—
Derivative assets and derivative liabilities			$	529		$	(949,735	)

_______________________

(1)Mortgage-delivery commitments are classified as derivatives with changes in fair value recorded in other income.

(2)Amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions.

The following table presents the fair value of derivative instruments as of December 31, 2011 (dollars in thousands):

	Notional Amount of Derivatives		Derivative Assets			Derivative Liabilities
Derivatives designated as hedging instruments
Interest-rate swaps	$	19,326,022	$	229,091		$	(1,036,060	)
Interest-rate futures / forwards	700,000		—			(31,981		)
Total derivatives designated as hedging instruments	20,026,022		229,091			(1,068,041		)
Derivatives not designated as hedging instruments
Interest-rate swaps	235,750		—			(30,506		)
Interest-rate caps or floors	300,000		786			—
Mortgage-delivery commitments (1)	17,734		128			—
Total derivatives not designated as hedging instruments	553,484		914			(30,506		)
Total notional amount of derivatives	$	20,579,506
Total derivatives before netting and collateral adjustments			230,005			(1,098,547		)
Netting adjustments (2)			(193,438		)	193,438
Cash collateral received from counterparties, including accrued interest			(20,046		)	(195		)
Derivative assets and derivative liabilities			$	16,521		$	(905,304	)

_______________________

(1)Mortgage-delivery commitments are classified as derivatives with changes in fair value recorded in other income.

(2)Amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions.

Net Gains (Losses) on Derivatives and Hedging Activities [Table Text Block]

Net (losses) gains on derivatives and hedging activities recorded in Other Income (Loss) for the three and nine months endedSeptember 30, 2012, and 2011, were as follows (dollars in thousands).

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Derivatives and hedged items in fair-value hedging relationships:
Interest-rate swaps	$	597		$	445		$	255		$	1,846
Derivatives not designated as hedging instruments:
Economic hedges:
Interest-rate swaps	(3,243		)	(17,952		)	(10,105		)	(24,674		)
Interest-rate caps or floors	(207		)	(1,147		)	(745		)	(2,298		)
Mortgage-delivery commitments	767			1,180			2,086			1,599
Total net losses related to derivatives not designated as hedging instruments	(2,683		)	(17,919		)	(8,764		)	(25,373		)
Net losses on derivatives and hedging activities	$	(2,086	)	$	(17,474	)	$	(8,509	)	$	(23,527	)

Gain (Loss) By Type of Hedged Item [Table Text Block]

The following tables present, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair-value hedge relationships and the impact of those derivatives on our net interest income for the three and nine months endedSeptember 30, 2012, and 2011 (dollars in thousands):

	For the Three Months Ended September 30, 2012
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	1,375		$	(1,116	)	$	259		$	(45,869	)
Investments	7,645			(7,183		)	462			(10,256		)
Deposits	(293		)	293			—			385
COs – bonds	(6,947		)	6,823			(124		)	21,003
	$	1,780		$	(1,183	)	$	597		$	(34,737	)
	For the Three Months Ended September 30, 2011
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	(68,999	)	$	68,954		$	(45	)	$	(68,212	)
Investments	(146,239		)	145,812			(427		)	(11,751		)
Deposits	(23		)	23			—			396
COs – bonds	28,819			(27,902		)	917			37,594
	$	(186,442	)	$	186,887		$	445		$	(41,973	)

_______________________

(1)  The net interest on derivatives in fair-value hedge relationships is presented in the interest income or interest expense of the respective hedged item in the statement of operations.

	For the Nine Months Ended September 30, 2012
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	55,505		$	(56,798	)	$	(1,293	)	$	(149,548	)
Investments	(5,066		)	6,321			1,255			(30,626		)
Deposits	(908		)	908			—			1,151
COs – bonds	(109,114		)	109,407			293			68,893
	$	(59,583	)	$	59,838		$	255		$	(110,130	)
	For the Nine Months Ended September 30, 2011
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	(20,049	)	$	20,472		$	423		$	(218,021	)
Investments	(145,876		)	146,158			282			(35,973		)
Deposits	(381		)	381			—			1,183
COs – bonds	29,952			(28,811		)	1,141			122,699
	$	(136,354	)	$	138,200		$	1,846		$	(130,112	)

______________

(1)  The net interest on derivatives in fair-value hedge relationships is presented in the interest income or interest expense of the respective hedged item in the statement of operations.

Credit Risk Exposure on Derivative Instruments [Table Text Block]

The table below presents credit-risk exposure on derivative instruments, excluding the amount of excess cash collateral received from counterparties in instances where a counterparty's pledged cash collateral to us exceeds our net position (dollars in thousands).

	September 30, 2012			December 31, 2011
Total net exposure at fair value(1)	$	859		$	36,567
Less: cash collateral received from counterparties, including accrued interest	(330		)	(20,046		)
Net exposure after cash collateral	$	529		$	16,521

_______________________

(1)  Includes net accrued interest receivable of $1.7 million and $988,000 at September 30, 2012, and December 31, 2011, respectively.

Post-haircut Value of Incremental Collateral Based on Incremental Credit Rating Downgrades [Table Text Block]

The following table sets forth the post-haircut value of incremental collateral that certain swap counterparties could have required us to deliver based on incremental credit rating downgrades at September 30, 2012 (dollars in thousands).

Post-haircut Value of Incremental Collateral to be Delivered  as of September 30, 2012
Ratings Downgrade (1)
From	To	Incremental Collateral(2)
AA+	AA or AA-	$	39,664
AA-	A+, A or A-	79,106
A-	below A-	14,000

_______________________

(1) Ratings are expressed in this table according to S&P's conventions but include the equivalent of such rating by Moody's and they represent the lower of our S&P and Moody's ratings.

(2) Additional collateral of $15.9 million could be called by counterparties as of September 30, 2012, at our current credit rating of AA+ (based on the lower of our credit ratings from S&P and Moody's) and is not included in the table.

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Available-for-Sale Securities (Sale of Available-for-Sale Securities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Available-for-sale Securities [Abstract]
Proceeds from sale of available-for-sale securities	$ 0	$ 0	$ 0	$ 2,127,944
Gross realized gains from sale of available-for-sale securities	0	0	0	14,415
Gross realized losses from sale of available-for-sale securities	0	0	0	(1,614)
Net realized gains from sale of available-for-sale securities	$ 0	$ 0	$ 0	$ 12,801

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Mortgage Loans Held for Portfolio (MLHP) (Details) (USD $) In Thousands, unless otherwise specified											9 Months Ended				9 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010	Sep. 30, 2012 Conventional Mortgage Loan [Member]	Dec. 31, 2011 Conventional Mortgage Loan [Member]	Sep. 30, 2012 Government Loan Member [Member]	Dec. 31, 2011 Government Loan Member [Member]	Sep. 30, 2012 Fixed-rate 15-year single-family mortgages [Member]	Dec. 31, 2011 Fixed-rate 15-year single-family mortgages [Member]	Sep. 30, 2012 Fixed-rate 20- and 30-year single-family mortgages [Member]	Dec. 31, 2011 Fixed-rate 20- and 30-year single-family mortgages [Member]	Sep. 30, 2012 Minimum [Member] Fixed-rate 20- and 30-year single-family mortgages [Member]	Sep. 30, 2012 Maximum [Member] Fixed-rate 20- and 30-year single-family mortgages [Member]
Mortgage Loans on Real Estate [Line Items]
Original contractual terms											15 years				20 years	30 years
Par Value	$ 3,382,124		$ 3,086,014				$ 2,982,391	$ 2,777,100	$ 399,733	$ 308,914	$ 681,720	$ 646,539	$ 2,700,404	$ 2,439,475
Premiums	55,931		35,420
Discounts	(4,415)		(5,708)
Deferred derivative gains and losses, net	3,408		1,297
Total mortgage loans held for portfolio	3,437,048		3,117,023
Allowance for credit losses	(5,514)	(6,114)	(7,800)	(7,181)	(7,181)	(8,653)
Total mortgage loans, net of allowance for credit losses	$ 3,431,534		$ 3,109,223

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Other-Than-Temporary Impairment (Narratives) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Other-Than-Temporary Impairment Analysis [Abstract]
Net other-than-temporary impairment losses on investment securities, credit portion	$ 1,092	$ 7,210	$ 5,544	$ 73,588
Accretion of noncredit portion of impairment losses on held-to-maturity securities	17,838	35,288	56,131	125,197
Reclassification adjustment of noncredit component of impairment losses included in net income relating to held-to-maturity securities	$ 1,028	$ 4,105	$ 2,257	$ 58,516
Percent of policy claims to be paid in cash by Ambac Assurance Corp.	25.00%		25.00%

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Trading Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading Securities	$ 279,420		$ 279,420		$ 274,164
Net Realized and Unrealized Gain (Loss) on Trading Securities	4,669	13,638	8,291	17,594
U.S. Government Guaranteed - Residential MBS [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading Securities	17,496		17,496		18,880
GSEs – Residential MBS [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading Securities	5,380		5,380		6,663
GSEs – Commercial MBS [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading Securities	$ 256,544		$ 256,544		$ 248,621

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Recently Issued Accounting Standards and Interpretations

9 Months Ended

Sep. 30, 2012

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recently Issued Accounting Standards and Interpretations [Text Block]

Recently Issued Accounting Standards and Interpretations

Disclosures about Offsetting Assets and Liabilities. On December 16, 2011, the Financial Accounting Standards Board (the FASB) and the International Accounting Standards Board (the IASB) issued common disclosure requirements intended to help investors and other financial statement users better assess the effect or potential effect of offsetting arrangements on a company's financial position, whether a company's financial statements are prepared on the basis of GAAP or International Financial Reporting Standards (IFRS). This guidance will require us to disclose both gross and net information about financial instruments, including derivative instruments, which are either offset on our statement of condition or subject to an enforceable master netting arrangement or similar agreement. This guidance will be effective for interim and annual periods beginning on January 1, 2013, and will be applied retrospectively for all comparative periods presented. The adoption of this guidance will result in increased interim and annual financial statement disclosures, but will not affect our financial condition, results of operations, or cash flows.

Presentation of Comprehensive Income. On June 16, 2011, the FASB issued guidance to increase the prominence of other comprehensive income in financial statements. This guidance requires an entity that reports items of other comprehensive income to present comprehensive income in either a single financial statement or in two consecutive financial statements. In a single continuous statement, an entity is required to present the components of net income and total net income, the components of other comprehensive income, and a total for other comprehensive income, as well as a total for comprehensive income. In a two-statement approach, an entity is required to present the components of net income and total net income in its statement of net income. The statement of other comprehensive income should follow immediately and include the components of other comprehensive income as well as totals for both other comprehensive income and comprehensive income. This guidance eliminates the option to present other comprehensive income in the statement of changes in stockholders' equity. We have elected the two-statement approach for interim and annual periods beginning on January 1, 2012, and we have applied this guidance retrospectively for all periods presented. The adoption of this guidance is limited to the presentation of our interim and annual financial statements and did not affect our financial condition, results of operations, or cash flows. See Note 15 — Accumulated Other Comprehensive Loss for disclosures required under this amended guidance.

On December 23, 2011, the FASB issued guidance to defer the effective date of the new requirement to present

reclassifications of items out of accumulated other comprehensive income in the income statement. This guidance was effective

for interim and annual periods beginning on January 1, 2012. We adopted the remaining guidance contained in the new accounting standard for the presentation of comprehensive income.

Common Fair Value Measurement and Disclosure Requirements in GAAP and IFRS. On May 12, 2011, the FASB and the IASB issued substantially converged guidance on fair-value measurement and disclosure requirements. This guidance clarifies how fair-value accounting should be applied where its use is already required or permitted by other guidance within GAAP or IFRS. These amendments do not require additional fair-value measurements. This guidance generally represents clarifications to the application of existing fair-value measurement and disclosure requirements, as well as some instances where a particular principle or requirement for measuring fair value or disclosing information about fair-value measurements has changed. This guidance became effective for interim and annual periods beginning on January 1, 2012, and was applied prospectively. The adoption of this guidance resulted in additional interim and annual financial statement disclosures, but did not have a material effect on our financial condition, results of operations, or cash flows. See Note 17 — Fair Value for disclosures under this amended guidance.

Reconsideration of Effective Control for Repurchase Agreements. On April 29, 2011, the FASB issued guidance to improve the accounting for repurchase agreements and other agreements that both entitle and obligate a transferor to repurchase or redeem financial assets before their maturity. This guidance amends the existing criteria for determining whether or not a transferor has retained effective control over financial assets transferred under a repurchase agreement. A secured borrowing is recorded when effective control over the transferred financial assets is maintained while a sale is recorded when effective control over the transferred financial assets has not been maintained. The new guidance removes from the assessment of effective control: (1) the criterion requiring the transferor to have the ability to repurchase or redeem financial assets before their maturity on substantially the agreed terms, even in the event of the transferee's default, and (2) the collateral maintenance implementation guidance related to that criterion. This guidance was effective for interim and annual periods beginning on January 1, 2012, and was applied prospectively to transactions or modifications of existing transactions that occurred on or after the effective date. The adoption of this guidance did not have a material effect on our financial condition, results of operations, or cash flows.

Recently Issued Regulatory Guidance

Framework for Adversely Classifying Loans, Other Real Estate Owned, and Other Assets and Listing Assets for Special Mention. On April 9, 2012, the Federal Housing Finance Agency (the Finance Agency) issued Advisory Bulletin 2012-02, Framework for Adversely Classifying Loans, Other Real Estate Owned, and Other Assets and Listing Assets for Special Mention (AB 2012-02). AB 2012-02 establishes a standard and uniform methodology for classifying certain assets other than investment securities, and prescribes the timing of asset charge-offs based on these classifications. The guidance in AB 2012-02 is generally consistent with the Uniform Retail Credit Classification and Account Management Policy issued by the federal banking regulators in June 2000. AB 2012-02 states that it was effective upon issuance. The Federal Home Loan Banks (the FHLBanks or the FHLBank System) are currently assessing the provisions of AB 2012-02 in coordination with the Finance Agency and therefore, we have not yet determined either when we will implement the guidance or its effect on our financial condition, results of operations, and cash flows.

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Advances (General Terms) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Advances [Abstract]
Overdrawn demand-deposit accounts	$ 13,013		$ 7,683
Due in one year or less	11,087,724		8,266,384
Due after one year through two years	2,209,838		5,563,728
Due after two years through three years	2,341,603		2,721,354
Due after three years through four years	2,003,841		1,997,587
Due after four years through five years	3,094,195		2,151,231
Thereafter	2,594,097		3,873,205
Total par value	23,344,311		24,581,172
Premiums	50,035		37,378
Discounts	(22,965)		(23,748)
Market value of embedded derivatives	1,008	[1]	0	[1]
Hedging adjustments	543,298		600,096
Total Advances	$ 23,915,687		$ 25,194,898
Overdrawn demand-deposit accounts, Weighted average rate	0.54%		0.45%
Due in one year or less, Weighted average rate	0.88%		1.15%
Due after one year through two years, Weighted average rate	2.75%		1.98%
Due after two years through three years, Weighted average rate	2.71%		2.88%
Due after three years through four years, Weighted average rate	2.72%		2.96%
Due after four years through five years, Weighted average rate	3.01%		2.90%
Thereafter, Weighted average rate	3.23%		3.71%
Total weighted average rate	1.94%		2.23%

[1] At September 30, 2012, the Bank had certain advances with embedded features that met the requirements to be separated from the host contract and designate the embedded features as a stand-alone derivative.

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Employee Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2012

Employee Retirement Plans [Line Items]

Change in Benefit Obligation [Table Text Block]

In connection with the nonqualified supplemental defined benefit retirement plan and postretirement benefits, we recorded the following amounts as of September 30, 2012, and December 31, 2011 (dollars in thousands):

	Nonqualified Supplemental Defined Benefit Retirement Plan						Postretirement Benefits
	September 30, 2012			December 31, 2011			September 30, 2012			December 31, 2011
Change in benefit obligation (1)
Benefit obligation at beginning of year	$	5,901		$	3,859		$	634		$	499
Service cost	299			261			24			25
Interest cost	209			238			21			26
Actuarial loss (gain)	860			1,543			(4		)	97
Benefits paid	(301		)	—			(13		)	(13		)
Benefit obligation at end of period	6,968			5,901			662			634
Change in plan assets
Fair value of plan assets at beginning of year	—			—			—			—
Employer contribution	301			—			13			13
Benefits paid	(301		)	—			(13		)	(13		)
Fair value of plan assets at end of period	—			—			—			—
Funded status at end of period	$	(6,968	)	$	(5,901	)	$	(662	)	$	(634	)

______________________

(1) This represents projected benefit obligation for the nonqualified supplemental defined benefit retirement plan and accumulated postretirement benefit obligation for postretirement benefits.

Net Periodic Benefit Cost [Table Text Block]

The following table presents the components of net periodic benefit cost and other amounts recognized in accumulated other comprehensive loss for our nonqualified supplemental defined benefit retirement plan and postretirement benefits for the three and nine months endedSeptember 30, 2012, and 2011 (dollars in thousands):

	Nonqualified Supplemental Defined Benefit Retirement Plan For the Three Months Ended September 30,				Postretirement Benefits For the Three Months Ended September 30,
	2012		2011		2012		2011
Net Periodic Benefit Cost
Service cost	$	120	$	71	$	8	$	6
Interest cost	83		64		7		7
Amortization of net actuarial loss	116		35		3		—
Net periodic benefit cost	$	319	$	170	$	18	$	13
	Nonqualified Supplemental Defined Benefit Retirement Plan For the Nine Months Ended September 30,				Postretirement Benefits For the Nine Months Ended September 30,
	2012		2011		2012		2011
Net Periodic Benefit Cost
Service cost	$	299	$	191	$	24	$	19
Interest cost	209		173		21		20
Amortization of net actuarial loss	349		106		7		1
Net periodic benefit cost	$	857	$	470	$	52	$	40

Pentegra Defined Benefit Plan [Member]

Employee Retirement Plans [Line Items]

Schedule of Costs of Retirement Plans [Table Text Block]

The following table shows the net pension cost charged to compensation and benefits expense (dollars in thousands).

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
Net pension cost	$	1,104	$	1,250	$	3,212	$	3,098

Pentegra Defined Contribution Plan and Thrift Benefit Equalization Plan [Member]

Employee Retirement Plans [Line Items]

Schedule of Costs of Retirement Plans [Table Text Block]

The following table sets forth expenses relating to our defined contribution plans (dollars in thousands):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
Qualified Defined Contribution Plan - Pentegra Defined Contribution Plan	$	232	$	212	$	713	$	646
Nonqualified Defined Contribution Plan - Thrift Benefit Equalization Plan	11		16		80		68

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Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2012

Basis of Presentation [Abstract]

Marketable Securities, Policy [Policy Text Block]

We evaluate our individual available-for-sale and held-to-maturity securities for other-than-temporary impairment each quarter. As part of our evaluation of securities for other-than-temporary impairment, we consider whether we intend to sell each security for which fair value is less than amortized cost or whether it is more likely than not that we will be required to sell the security before the anticipated recovery of the remaining amortized cost. If either of these conditions is met, we recognize an other-than-temporary impairment charge in earnings equal to the entire difference between the security's amortized cost basis and its fair value at the statement of condition date. For securities in an unrealized loss position that meet neither of these conditions and for all residential private-label MBS, we perform a cash-flow analysis to determine whether the entire amortized cost basis of these impaired securities, including all previously other-than-temporarily impaired securities, will be recovered. If we do not expect to recover the entire amount, the unrealized loss position is considered to be other-than-temporarily impaired. We evaluate the security's other-than-temporary impairment to determine the amount of credit loss to be recognized in earnings, which is limited to the amount of that security's unrealized loss.

In performing a detailed cash-flow analysis, we identify the best estimate of the cash flows expected to be collected. If this estimate results in a present value of expected cash flows (discounted at the security's effective yield) that is less than the amortized cost basis of a security (that is, a credit loss exists), other-than-temporary impairment is considered to have occurred. For determining the present value of variable-rate and hybrid private-label residential MBS, we use the effective interest rate derived from a variable-rate index, such as one-month London Interbank Offered Rate (LIBOR), plus the contractual spread, plus or minus a fixed-spread adjustment when there is an existing discount or premium on the security. As the implied forward curve of a selected variable-rate index changes over time, the effective interest rates derived from that index will also change over time and would therefore impact the present value of the subject security.

Marketable Securities, Held-to-maturity Securities, Policy [Policy Text Block]

For held-to-maturity securities, the noncredit portion of an other-than-temporary impairment charge that is recognized in other comprehensive income is accreted from accumulated other comprehensive loss to the carrying value of the security over the remaining life of the security in a prospective manner based on the amount and timing of estimated cash flows. This accretion continues until the security is sold or matures, or an additional other-than-temporary impairment charge is recorded in earnings, which could result in a reclassification adjustment and the establishment of a new amount to be accreted.

Federal Home Loan Bank Advances, Prepayment Fees, Policy [Policy Text Block]

Prepayment Fees. We record prepayment fees received from borrowers on prepaid advances net of any associated basis adjustments related to hedging activities on those advances and net of deferred prepayment fees on advance prepayments considered to be loan modifications. Additionally, under certain advances products the prepayment-fee provisions of the advance agreement could result in either a payment from the borrower or to the borrower when such an advance is prepaid, based upon market conditions at the time of prepayment (referred to as a symmetrical prepayment fee). Advances with a symmetrical prepayment fee provision are hedged with derivatives containing offsetting terms, so that we are financially indifferent to the borrower's decision to prepay such advances. The net amount of prepayment fees is reflected as interest income in the statement of operations.

Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]

We have developed and documented a systematic methodology for determining an allowance for credit losses for our:

• extensions of credit, such as our advances and letters of credit;

• investments in government mortgage loans held for portfolio;

• investments in conventional mortgage loans held for portfolio;

• investments via term securities purchased under agreements to resell; and

• investments via term federal funds sold.

An allowance for credit losses is a valuation allowance separately established for each identified portfolio segment, if necessary, to provide for probable losses inherent in our portfolio as of the statement of condition date. To the extent necessary, an allowance for credit losses for off-balance-sheet credit exposure is recorded as a liability.

We use a model to determine our allowance for credit losses based on our investments in conventional mortgage loans. We periodically adjust the key inputs to this model in an effort intended to properly align our loss projections with the market conditions that are relevant to these loans. The key inputs to the model include past and current performance of these loans (including portfolio delinquency and default migration statistics), overall loan portfolio performance characteristics (including loss-mitigation features, especially credit enhancements, as discussed below under — Credit Enhancements), and loss-severity estimates for these loans. We update the following inputs at least once per quarter: current outstanding loan amounts, delinquency statistics of the portfolio, and related loss-mitigation features (including credit-enhancement and estimated credit-enhancement fee-recovery amounts) for all master commitments. A master commitment is a document which provides the general terms under which the participating financial institution will deliver mortgage loans, including a maximum loan delivery amount, maximum credit enhancement, if applicable, and expiration date. Additionally, we review the model's default migration factor on a quarterly basis to determine if the portfolio has exhibited any change in loans migrating from current to delinquent or from delinquent to default and make adjustments as appropriate.

We use a third-party loan-loss projection model to determine our loss-severity estimates for our master commitments. We update our loss-severity estimates periodically as we determine appropriate, but not less than once per year. The inputs to this model include loan-related characteristics (such as property types and locations), industry data (such as foreclosure timelines and associated costs), and current and projected housing prices.

Collectively Evaluated Mortgage Loans. We evaluate the credit risk of our investments in conventional mortgage loans for impairment on a collective basis that considers loan-pool-specific attribute data at the master commitment pool level, applies estimated loss severities, and incorporates available credit enhancements to establish our best estimate of probable incurred losses. Migration analysis is a methodology for estimating the rate of default experienced on pools of similar loans based on our historical experience. We apply migration analysis to conventional loans that are currently not past due, loans that are 30 to 59 days past due, 60 to 89 days past due, and 90 or more days past due. We then estimate the dollar amount of loans in these categories that we believe are likely to migrate to a realized loss position and apply a loss severity factor to estimate losses that would be incurred at the statement of condition date. Additionally, for our investments in loans modified under our temporary loan modification plan, on the effective date of a loan modification we measure the present value of expected future cash flows discounted at the loan's effective interest rate and reduce the carrying value of the loan accordingly. See — Troubled Debt Restructurings below for information on our temporary loan modification program.

Estimating a Margin of Imprecision. We also assess a factor for the margin for imprecision to the estimation of credit losses for the homogeneous population. The margin for imprecision is a factor in the allowance for credit losses that recognizes the imprecise nature of the measurement process and is included as part of the mortgage loan allowance for credit loss. This amount represents a subjective management judgment based on facts and circumstances that exist as of the reporting date that is unallocated to any specific measurable economic or credit event and is intended to cover other inherent losses that may not be captured in our methodology. The actual loss that may occur on homogeneous populations of mortgage loans may differ from the estimated loss.

Loans and Leases Receivable, Nonaccrual Loan and Lease Status, Policy [Policy Text Block]

Nonaccrual Loans. We place conventional mortgage loans on nonaccrual status when the collection of the contractual principal or interest is 90 days or more past due. When a conventional mortgage loan is placed on nonaccrual status, accrued but uncollected interest is reversed against interest income in the current period. We generally record cash payments received on nonaccrual loans first as interest income and then as a reduction of principal as specified in the contractual agreement, unless the collection of the remaining principal amount due is considered doubtful. If the collection of the remaining principal amount due is considered doubtful, cash payments received would be applied first solely to principal until the remaining principal amount due is expected to be collected and then as a recovery of any charge-off, if applicable, followed by recording interest income. A loan on nonaccrual status may be restored to accrual status when the collection of the contractual principal and interest is less than 90 days past due.

Loans and Leases Receivable, Nonperforming Loan and Lease, Policy [Policy Text Block]

Impairment Methodology. A loan is considered impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due according to the contractual terms of the loan agreement.

Loans that are on nonaccrual status and that are considered collateral-dependent are measured for impairment based on the fair value of the underlying property less estimated selling costs. Loans are considered collateral-dependent if repayment is expected to be provided solely by the sale of the underlying property, that is, there is no other available and reliable source of repayment. Collateral-dependent loans are impaired if the fair value of the underlying collateral less estimated selling costs is insufficient to recover the unpaid principal balance on the loan. Interest income on impaired loans is recognized in the same manner as nonaccrual loans as discussed above.

Loans And Leases Receivable Charge Off Policy [Policy Text Block]

Charge-Off Policy. We evaluate whether to record a charge-off on a conventional mortgage loan upon the occurrence of a confirming event. Confirming events include, but are not limited to, the occurrence of foreclosure or notification of a claim against any of the credit enhancements. A charge-off is recorded if we determine that the recorded investment in the loan is not likely to be recovered.

Loans and Leases Receivable, Troubled Debt Restructuring Policy [Policy Text Block]

Our program under MPF for mortgage loan troubled debt restructurings primarily involves modifying the borrower's monthly payment for a period of up to 36 months to achieve a housing expense ratio of no more than 31 percent of their qualifying monthly income. The outstanding principal balance is first re-amortized to reflect a principal and interest payment for a term not to exceed 40 years. This would result in a balloon payment at the original maturity date of the loan as the maturity date and number of remaining monthly payments are not adjusted. If the 31 percent housing expense ratio is not achieved through re-amortization, the interest rate is reduced for the temporary modification period of up to 36 months in 0.125 percent increments below the original note rate, to a floor rate of 3.00 percent, resulting in reduced principal and interest payments, until the desired 31 percent housing expense ratio is met.

Derivatives, Policy [Policy Text Block]

Accrued Interest Receivable and Payable. The differential between accrual of interest receivable and payable on derivatives designated as a fair-value hedge or as a cash-flow hedge is recognized through adjustments to the interest income or interest expense of the designated hedged investment securities, advances, COs, deposits, or other financial instruments. The differential between accrual of interest receivable and payable on economic hedges is recognized in other income (loss), along with changes in fair value of these derivatives, as net (losses) gains on derivatives and hedging activities.

All derivatives are recognized on the statement of condition at fair value. We offset fair-value amounts recognized for derivative instruments and fair-value amounts recognized for the right to reclaim cash collateral (a receivable) or the obligation to return cash collateral (a payable) arising from derivative instruments recognized at fair value executed with the same counterparty under a master-netting arrangement. Derivative assets and derivative liabilities reported on the statement of condition also include net accrued interest. Cash flows associated with derivatives are reflected as cash flows from operating activities in the statement of cash flows unless the derivative meets the criteria to be a financing derivative.

Each derivative is designated as one of the following:

• a qualifying hedge of the change in fair value of a recognized asset or liability or an unrecognized firm commitment (a fair value hedge);

• a qualifying hedge of a forecasted transaction or the variability of cash flows that are to be received or paid in connection with a recognized asset or liability (a cash-flow hedge); or

• a nonqualifying hedge of an asset or liability (an economic hedge) for asset-liability-management purposes.

Accounting for Fair-Value or Cash-Flow Hedges. If hedging relationships meet certain criteria, including, but not limited to, formal documentation of the hedging relationship and an expectation to be highly effective, they qualify for fair-value or cash-flow hedge accounting and the offsetting changes in fair value of the hedged items are recorded either in earnings in the case of fair-value hedges or accumulated other comprehensive loss in the case of cash-flow hedges. Our approaches to hedge accounting are:

• long-haul hedge accounting, which generally requires us to formally assess (both at the hedge's inception and at least quarterly) whether the derivatives that are used in hedging transactions have been effective in offsetting changes in the fair value or cash flows of hedged items or forecasted transactions and whether those derivatives may be expected to remain effective in future periods; and 

• short-cut hedge accounting, which can be used for transactions for which the assumption can be made that the change in fair value of a hedged item, due to changes in the benchmark rate, exactly offsets the change in fair value of the related derivative. Under the short-cut method, the entire change in fair value of the interest-rate swap is considered to be effective at achieving offsetting changes in fair values or cash flows of the hedged asset or liability.

Derivatives that are used in fair-value hedges are typically executed at the same time as the hedged items, and we designate the hedged item in a qualifying hedge relationship as of the trade date. In many hedging relationships that use the short-cut method, we may designate the hedging relationship upon our commitment to disburse an advance or trade a consolidated obligation (CO) that settles within the shortest period of time possible for the type of instrument based on market-settlement conventions. In such circumstances, although the advance or CO will not be recognized in the financial statements until settlement date, the hedge meets the criteria for applying the short-cut method, provided all other short-cut criteria are also met. We then record the changes in fair value of the derivative and the hedged item beginning on the trade date.

Changes in the fair value of a derivative that is designated and qualifies as a fair-value hedge, along with changes in the fair value of the hedged asset or liability that are attributable to the hedged risk (including changes that reflect losses or gains on firm commitments), are recorded in other income (loss) as net (losses) gains on derivatives and hedging activities.

Changes in the fair value of a derivative that is designated and qualifies as a cash-flow hedge, to the extent that the hedge is effective, are recorded in accumulated other comprehensive loss, a component of capital, until earnings are affected by the variability of the cash flows of the hedged transaction.

For both fair-value and cash-flow hedges, any hedge ineffectiveness (which represents the amount by which the changes in the fair value of the derivative differ from the change in the fair value of the hedged item or the variability in the cash flows of the forecasted transaction) is recorded in other income (loss) as net (losses) gains on derivatives and hedging activities.

Managing Credit Risk on Derivatives. We are subject to credit risk on our hedging activities due to the risk of nonperformance by counterparties to the derivative agreements. The amount of potential counterparty risk depends on the extent to which master-netting arrangements are included in such contracts to mitigate the risk. We try to limit counterparty credit risk through our ongoing monitoring of counterparty creditworthiness and adherence to the requirements set forth in our policies and Finance Agency regulations. We require collateral agreements in connection with our derivatives transactions. These collateral agreements include collateral delivery thresholds. All counterparties must execute master-netting agreements prior to entering into any interest-rate-exchange agreement with us. These master-netting agreements contain bilateral-collateral exchange agreements that require that credit exposure beyond a defined threshold amount be secured by readily marketable, U.S. Treasury or GSE securities, or cash. The level of these collateral threshold amounts varies according to the counterparty's Standard & Poor's Ratings Services (S&P) or Moody's Investors Service (Moody's) long-term credit ratings. Credit exposures are then measured daily and adjustments to collateral positions are made in accordance with the terms of the master-netting agreements. These master-netting agreements also contain bilateral ratings-tied termination events permitting us to terminate all outstanding agreements with a counterparty in the event of a specified rating downgrade by Moody's or S&P. Based on credit analyses and collateral requirements, we do not anticipate any credit losses on our derivative agreements.

Derivatives, Hedge Discontinuances [Policy Text Block]

Discontinuance of Hedge Accounting. We may discontinue hedge accounting prospectively when:

• we determine that the derivative is no longer effective in offsetting changes in the fair value or cash flows of a hedged item (including hedged items such as firm commitments or forecasted transactions);

• the derivative and/or the hedged item expires or is sold, terminated, or exercised;

• it is no longer probable that the forecasted transaction will occur in the originally expected period;

• a hedged firm commitment no longer meets the definition of a firm commitment; or

• we determine that designating the derivative as a hedging instrument is no longer appropriate.

When hedge accounting is discontinued because we determine that the derivative no longer qualifies as an effective fair-value hedge of an existing hedged item, we either terminate the derivative or continue to carry the derivative on the statement of condition at its fair value and cease to adjust the hedged asset or liability for changes in fair value, and begin to amortize the cumulative basis adjustment on the hedged item into earnings over the remaining life of the hedged item using the level-yield method.

When hedge accounting is discontinued because we determine that the derivative no longer qualifies as an effective cash-flow hedge of an existing hedged item, we continue to carry the derivative on the statement of condition at its fair value and amortize the cumulative other comprehensive loss adjustment to earnings when earnings are affected by the existing hedged item.

If it is no longer probable that a forecasted transaction will occur by the end of the originally expected period or within two months thereafter, we immediately recognize the gain or loss that was in accumulated other comprehensive loss in earnings. In rare cases we may discontinue cash-flow hedge accounting, but the existence of extenuating circumstances related to the nature of the forecasted transaction and that are outside of our control or influence may make it probable that the forecasted transaction occurs in the future, on a date that is beyond the additional two-month period of time. In such cases, the gain or loss on the derivative remains in accumulated other comprehensive loss and is recognized in earnings when the forecasted transaction occurs.

When hedge accounting is discontinued because the hedged item no longer meets the definition of a firm commitment, we continue to carry the derivative on the statement of condition at its fair value, removing from the statement of condition any asset or liability that was recorded to recognize the firm commitment and recording it as a gain or loss in current period earnings.

Derivatives, Embedded Derivatives [Policy Text Block]

Embedded Derivatives. We may issue debt, make advances, or purchase financial instruments in which a derivative instrument is embedded. Upon execution of these transactions, we assess whether the economic characteristics of the embedded derivative are clearly and closely related to the economic characteristics of the remaining component of the advance, debt, deposit, or other financial instrument (the host contract) and whether a separate, nonembedded instrument with the same terms as the embedded instrument would meet the definition of a derivative instrument. When we determine that (1) the embedded derivative has economic characteristics that are not clearly and closely related to the economic characteristics of the host contract and (2) a separate, stand-alone instrument with the same terms would qualify as a derivative instrument, the embedded derivative is separated from the host contract, carried at fair value, and designated as a stand-alone derivative instrument. If the entire contract (the host contract and the embedded derivative) is to be measured at fair value, with changes in fair value reported in current earnings (for example, an investment security classified as trading, as well as hybrid financial instruments) or if we cannot reliably identify and measure the embedded derivative for purposes of separating that derivative from its host contract, the entire contract is carried on the statement of condition at fair value and no portion of the contract is designated as a hedging instrument. At September 30, 2012, the Bank had certain advances with embedded features that met the requirement to be separated from the host contract and designate the embedded features as a stand-alone derivative. The value of the embedded derivatives is included in total advances on the Statement of Condition. See Note 7 — Advances for the fair value of the embedded derivatives. 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 as of December 31, 2011.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Cash and Due from Banks. The fair value approximates the recorded carrying value.

Interest-Bearing Deposits. The fair value approximates the recorded carrying value.

Securities Purchased under Agreements to Resell. The fair value is determined by calculating the present value of expected future cash flows. The discount rates used in these calculations are the rates for securities with similar terms.

Federal Funds Sold. The fair value is determined by calculating the present value of the expected future cash flows. The discount rates used in these calculations are the rates for federal funds with similar terms.

Investment Securities. We determine the fair values of our investment securities, other than HFA floating-rate securities, based on prices obtained for each of these securities that we request from four designated third-party pricing vendors. The fair value of each such security is the average of such vendor prices that are within a cluster pricing tolerance range. A cluster is defined as a group of available vendor prices for a given security that is within a defined price tolerance range of the median vendor price depending on the security type. An outlier is any vendor price that is outside of the defined cluster and is evaluated for reasonableness. The use of the average of available vendor prices within a cluster and the evaluation of reasonableness of outlier prices does not discard available information. In addition, we review the fair values the method produces for reasonableness.

We request prices on each of our securities subject to this fair-value method from four third-party vendors, when available. These pricing vendors use methods that generally employ, but are not limited to, benchmark yields, recent trades, dealer estimates, valuation models, benchmarking of like securities, sector groupings, and/or matrix pricing. We establish a median price for each security using a formula that is based on the number of prices received:

• if four prices are received, the average of the two middle prices is used;

• if three prices are received, the middle price is used;

• if two prices are received, the average of the two prices is used; and

• if one price is received, it is used subject to validation as described below.

Vendor prices that are outside of a defined cluster are identified as outliers and are subject to additional review 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, or use of internal model prices, which we believe reflect the facts and circumstances that a market participant would consider. We also perform this analysis in those limited instances where no third-party vendor price or only one third-party vendor price is available to determine fair value. If the analysis indicates that an outlier (or outliers) is (are) not representative of fair value and that the average of the vendor prices within the tolerance threshold of the median price is the best estimate, then we use the average of the vendor prices within the tolerance threshold of the median price as the final price. If, on the other hand, we determine that an outlier (or some other price identified in the analysis) is a better estimate of fair value, then the outlier (or the other price as appropriate) is used as the final price. In all cases, the final price is used to determine the fair value of the security.

As of September 30, 2012, four vendor prices were received for 93 percent of our investment securities and the final prices for substantially all of those securities were computed by averaging the four prices. Substantially all of our securities were priced by at least three vendors. The relative proximity of the prices received supports our conclusion that the final computed prices are reasonable estimates of fair value. Based on the current lack of market activity for private-label residential MBS, the nonrecurring fair-value measurements for such securities as of September 30, 2012, and December 31, 2011, fell within Level 3 of the fair-value hierarchy. Our fixed-rate HFA securities also fall within Level 3 of the fair-value hierarchy due to the current lack of market activities for these bonds.

Investment Securities – HFA Floating Rate Securities. The fair value isdetermined by calculating the present value of the expected future cash flows. The discount rates used in these calculations are the rates for securities with similar terms. Our floating rate HFA securities also fall within level 3 of the fair-value hierarchy due to the current lack of market activities for these bonds.

Advances. We determine the fair value of advances by calculating the present value of expected future cash flows from the advances and excluding the amount of accrued interest receivable. The discount rates used in these calculations are the current replacement rates for advances with similar terms. We calculate our replacement advance rates at a spread to our cost of funds. Our cost of funds approximates the CO curve. See — COs within this note for a discussion of the CO curve. We use market-based expectations of future interest-rate volatility implied from current market prices for similar options to estimate the fair values of advances with optionality. In accordance with the Finance Agency's advances regulations, advances with a maturity or repricing period greater than six months require a prepayment fee sufficient to make us financially indifferent to the borrower's decision to prepay the advances. Therefore, the fair value of advances does not assume prepayment risk. We do not account for credit risk in determining the fair value of our advances due to the strong credit protections that mitigate the credit risk associated with advances. Collateral requirements for advances provide surety for the repayment such that the probability of credit losses on advances is very low. We have the ability to establish a blanket lien on all financial assets of most members, and in the case of federally insured depository institutions, our lien has a statutory priority over all other creditors with respect to collateral that has not been perfected by other parties. All of these factors serve to mitigate credit risk on advances.

Mortgage Loans. The fair values for mortgage loans are determined based on quoted market prices of similar mortgage-loans adjusted for credit and liquidity risk.

REO. Fair value is derived from third-party valuations of the property, which fall within level 3 of the fair-value hierarchy.

Accrued Interest Receivable and Payable. The fair value approximates the recorded carrying value.

Derivative Assets/Liabilities – Interest-Rate-Exchange Agreements. We base the fair values of interest-rate-exchange agreements on available market prices of derivatives having similar terms, including accrued interest receivable and payable. The fair value is based on the LIBOR swap curve and forward rates at period-end and, for agreements containing options, the market's expectations of future interest-rate volatility implied from current market prices of similar options. The fair-value methodology uses standard valuation techniques for derivatives such as discounted cash-flow analysis and comparisons with similar instruments. The discounted cash-flow model uses market-observable inputs (inputs that are actively quoted and can be validated to external sources). The fair values are netted by counterparty, including cash collateral received from or delivered to the counterparty, where an offset right exists. If these netted amounts are positive, they are classified as an asset, and if negative, they are classified as a liability. We enter into master-netting agreements for interest-rate-exchange agreements with institutions that have long-term senior unsecured credit ratings that are at or above single-A (or equivalent) by S&P and Moody's. We maintain master-netting agreements, which include bilateral collateral agreements, to reduce our exposure to counterparty defaults. These bilateral-collateral agreements require credit exposures beyond a defined threshold amount to be secured by U.S. government or GSE-issued securities or cash. All of these factors serve to mitigate credit and nonperformance risk to us. We generally use a midmarket pricing convention based on the bid-ask spread as a practical expedient for fair-value measurements. Because these estimates are made at a specific point in time, they are susceptible to material near-term changes. We have evaluated the potential for the fair value of the instruments to be affected by counterparty risk and our own credit risk and have determined that no adjustments were significant to the overall fair-value measurements.

Derivative Assets/Liabilities – Commitments to Invest in Mortgage Loans.Commitments to invest in mortgage loans are recorded as derivatives in the statement of condition. The fair values of such commitments are based on the end-of-day delivery commitment prices provided by the FHLBank of Chicago and a spread, which are derived from MBS to-be-announced delivery commitment prices with adjustment for the contractual features of the MPF program, such as servicing and credit-enhancement features.

Deposits. We determine the fair values of term deposits by calculating the present value of expected future cash flows from the deposits and reducing this amount by any accrued interest payable. The discount rates used in these calculations are the costs of currently issued deposits with similar terms.

COs. We estimate fair values based on the cost of issuing comparable term debt, excluding non-interest selling costs. Fair values of COs without embedded options are determined based on internal valuation models that use market-based yield curve inputs obtained from the Office of Finance (the FHLBanks' agent that issues and services COs). Fair values of COs with embedded options are determined by internal valuation models with market-based inputs obtained from the Office of Finance and derivative dealers. Our internal valuation models use standard valuation techniques and estimate fair values based on the following inputs.

• CO Curve. The Office of Finance constructs an internal yield curve, referred to as the CO curve, using the U.S. Treasury curve as a base yield curve that is then adjusted by adding indicative spreads obtained from market observable sources. These market indications are generally derived from pricing indications from dealers, historical pricing relationships, recent GSE debt trades, and secondary market activity.

• Volatility Assumption. To estimate the fair values of consolidated obligations with optionality, we use market-based expectations of future interest-rate volatility implied from current market prices for similar options.

Mandatorily Redeemable Capital Stock. The fair value of capital stock subject to mandatory redemption is generally equal to its par as indicated by contemporaneous member purchases and sales at par value. Fair value also includes an estimated dividend earned at the time of reclassification from equity to liabilities, until such amount is paid, and any subsequently declared dividend. Capital stock can only be acquired by our members at par value and redeemed at par value. Our capital stock is not traded and no market mechanism exists for the exchange of capital stock outside of our cooperative structure.

Commitments. The fair value of our standby bond-purchase agreements is based on the present value of the estimated fees we receive for providing these agreements discounted at yields comparable to those of the related bonds, taking into account the remaining terms of such agreements. For fixed-rate advance commitments, fair value also considers the difference between current levels of interest rates and the committed rates.

Subjectivity of Estimates. Estimates of the fair value of financial assets and liabilities using the methodologies 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. Since these estimates are made as of a specific point in time, they are susceptible to material near-term changes.

Fair-Value Hierarchy. Fair value is the price in an orderly transaction between market participants to sell an asset or transfer a liability in the principal (or most advantageous) market for the asset or liability at the measurement date (an exit price).

We record trading securities, available-for-sale securities, derivative assets, and derivative liabilities at fair value on a recurring basis and on occasion, certain private-label MBS and REO on a nonrecurring basis. The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The inputs are evaluated and an overall level for the fair-value measurement is determined. This overall level is an indication of market observability of the fair-value measurement for the asset or liability.

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

Level 1Quoted prices (unadjusted) for identical assets or liabilities in an active market that the reporting entity

can access on the measurement date.

Level 2Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. If the asset or liability has a specified or 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; (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, volatilities, and prepayment speeds); and (4) inputs that are derived principally from or corroborated by observable market data (e.g., implied spreads).

Level 3Unobservable inputs for the asset or liability.

We review the 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.

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Subsequent Events

9 Months Ended

Sep. 30, 2012

Subsequent Events [Abstract]

Subsequent Events [Text Block]

Subsequent Events

On October 18, 2012, the board of directors declared a cash dividend at an annualized rate of 0.48 percent based on capital stock balances outstanding during the third quarter of 2012. The dividend, including dividends on mandatorily redeemable capital stock, amounted to $4.4 million and was paid on November 2, 2012.

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Held-to-Maturity Securities Redemption Terms (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 6,082,835		$ 7,106,004
Carrying Value	5,679,296	[1],[2]	6,655,008	[1],[2]
Fair Value	5,915,270		6,663,066
Other Than Mortgage-backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less, Amortized Cost	0		1,360
Due in one year or less, Carrying Amount	0	[1]	1,360	[1]
Due in one year or less, Fair Value	0		1,369
Due after one year through five years, Amortized Cost	70,010		71,370
Due after one year through five years, Carrying Amount	70,010	[1]	71,370	[1]
Due after one year through five years, Fair Value	71,868		73,878
Due after five years through 10 years, Amortized Cost	34,351		38,405
Due after five years through 10 years, Carrying Amount	34,351	[1]	38,405	[1]
Due after five years through 10 years, Fair Value	35,436		39,733
Due after 10 years, Amortized Cost	171,950		180,974
Due after 10 years, Carrying Amount	171,950	[1]	180,974	[1]
Due after 10 years, Fair Value	143,967		146,938
Amortized Cost	276,311		292,109
Carrying Value	276,311	[1]	292,109	[1]
Fair Value	251,271		261,918
MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	5,806,524	[3]	6,813,895	[3]
Carrying Value	5,402,985	[1],[3]	6,362,899	[1],[3]
Fair Value	$ 5,663,999	[3]	$ 6,401,148	[3]

[1] Carrying value of held-to-maturity securities represents the sum of amortized cost and the amount of noncredit-related other-than-temporary impairment recognized in accumulated other comprehensive loss.

[2] Fair values of held-to-maturity securities were $5,915,270 and $6,663,066 at September 30, 2012, and December 31, 2011, respectively.

[3] MBS are not presented by contractual maturity because their expected maturities will likely differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay their obligations with or without call or prepayment fees.

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Fair Values (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments [Table Text Block]

The carrying values, fair values and fair-value hierarchy of our financial instruments at September 30, 2012 were as follows (dollars in thousands):

	September 30, 2012
	Carrying Value			Total Fair Value			Level 1			Level 2			Level 3		Netting Adjustments and Cash Collateral
Financial instruments
Assets:
Cash and due from banks	$	306,166		$	306,166		$	306,166		$	—		$	—	$	—
Interest-bearing deposits	261			261			261			—			—		—
Securities purchased under agreements to resell	5,125,000			5,124,986			—			5,124,986			—		—
Federal funds sold	1,100,000			1,099,996			—			1,099,996			—		—
Trading securities(1)	279,420			279,420			—			279,420			—		—
Available-for-sale securities(1)	5,764,096			5,764,096			—			5,764,096			—		—
Held-to-maturity securities(2)	5,679,296			5,915,270			—			4,319,536			1,595,734		—
Advances	23,915,687			24,362,020			—			24,362,020			—		—
Mortgage loans, net	3,431,534			3,674,029			—			3,674,029			—		—
Accrued interest receivable	95,950			95,950			—			95,950			—		—
Derivative assets(1)	529			529			—			116,139			—		(115,610		)
Liabilities:
Deposits	(685,328		)	(685,177		)	—			(685,177		)	—		—
COs:
Bonds	(28,238,899		)	(29,024,692		)	—			(29,024,692		)	—		—
Discount notes	(11,993,572		)	(11,993,960		)	—			(11,993,960		)	—		—
Mandatorily redeemable capital stock	(215,863		)	(215,863		)	(215,863		)	—			—		—
Accrued interest payable	(128,966		)	(128,966		)	—			(128,966		)	—		—
Derivative liabilities(1)	(949,735		)	(949,735		)	—			(1,065,015		)	—		115,280
Other:
Commitments to extend credit for advances	—			996			—			996			—		—
Standby bond-purchase agreements	—			641			—			641			—		—
Standby letters of credit	(531		)	(531		)	—			(531		)	—		—

_______________________

(1) Carried at fair value on a recurring basis.

(2) Private-label residential MBS and HFA securities are categorized as Level 3. Private-label residential MBS that have suffered other than temporary impairments are measured at fair value on a nonrecurring basis. See the recurring and nonrecurring tables below for more details.

The carrying values and fair values of our financial instruments at December 31, 2011, were as follows (dollars in thousands):

	December 31, 2011
	Carrying Value			Fair Value
Financial instruments
Assets:
Cash and due from banks	$	112,094		$	112,094
Interest-bearing deposits	177			177
Securities purchased under agreements to resell	6,900,000			6,899,645
Federal funds sold	2,270,000			2,269,951
Trading securities	274,164			274,164
Available-for-sale securities	5,280,199			5,280,199
Held-to-maturity securities	6,655,008			6,663,066
Advances	25,194,898			25,718,265
Mortgage loans, net	3,109,223			3,305,265
Accrued interest receivable	116,517			116,517
Derivative assets	16,521			16,521
Liabilities:
Deposits	(654,246		)	(654,094		)
COs:
Bonds	(29,879,460		)	(30,655,174		)
Discount notes	(14,651,793		)	(14,651,926		)
Mandatorily redeemable capital stock	(227,429		)	(227,429		)
Accrued interest payable	(110,782		)	(110,782		)
Derivative liabilities	(905,304		)	(905,304		)
Other:
Commitments to extend credit for advances	—			2,612
Standby bond-purchase agreements	—			1,814
Standby letters of credit	(625		)	(625		)

Fair Value Measured on Recurring Basis [Table Text Block]

The following tables present our assets and liabilities that are measured at fair value on the statement of condition, which are recorded on a recurring basis at September 30, 2012, and December 31, 2011, by fair-value hierarchy level (dollars in thousands):

	September 30, 2012
	Level 1		Level 2			Level 3		Netting Adjustment (1)			Total
Assets:
Trading securities:
U.S. government-guaranteed – residential MBS	$	—	$	17,496		$	—	$	—		$	17,496
GSEs – residential MBS	—		5,380			—		—			5,380
GSEs – commercial MBS	—		256,544			—		—			256,544
Total trading securities	—		279,420			—		—			279,420
Available-for-sale securities:
Supranational institutions	—		473,416			—		—			473,416
Corporate bonds (2)	—		308,225			—		—			308,225
U.S. government-owned corporations	—		293,600			—		—			293,600
GSEs	—		2,148,466			—		—			2,148,466
U.S. government guaranteed – residential MBS	—		76,957			—		—			76,957
GSEs – residential MBS	—		2,361,517			—		—			2,361,517
GSEs – commercial MBS	—		101,915			—		—			101,915
Total available-for-sale securities	—		5,764,096			—		—			5,764,096
Derivative assets:
Interest-rate-exchange agreements	—		116,054			—		(115,610		)	444
Mortgage delivery commitments	—		85			—		—			85
Total derivative assets	—		116,139			—		(115,610		)	529
Total assets at fair value	$	—	$	6,159,655		$	—	$	(115,610	)	$	6,044,045
Liabilities:
Derivative liabilities
Interest-rate-exchange agreements	$	—	$	(1,064,887	)	$	—	$	115,280		$	(949,607	)
Mortgage delivery commitments	—		(128		)	—		—			(128		)
Total liabilities at fair value	$	—	$	(1,065,015	)	$	—	$	115,280		$	(949,735	)

_______________________

(1)These amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparty. Net cash collateral associated with derivatives, including accrued interest, as of September 30, 2012, totaled $330,000.

(2) These securities are corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. Government.

	December 31, 2011
	Level 1		Level 2			Level 3		Netting Adjustment (1)			Total
Assets:
Trading securities:
U.S. government-guaranteed – residential MBS	$	—	$	18,880		$	—	$	—		$	18,880
GSEs – residential MBS	—		6,663			—		—			6,663
GSEs – commercial MBS	—		248,621			—		—			248,621
Total trading securities	—		274,164			—		—			274,164
Available-for-sale securities:
Supranational institutions	—		469,242			—		—			469,242
Corporate bonds (2)	—		564,312			—		—			564,312
U.S. government-owned corporations	—		284,844			—		—			284,844
GSEs	—		2,782,421			—		—			2,782,421
U.S. government guaranteed – residential MBS	—		91,228			—		—			91,228
GSEs – residential MBS	—		984,808			—		—			984,808
GSEs – commercial MBS	—		103,344			—		—			103,344
Total available-for-sale securities	—		5,280,199			—		—			5,280,199
Derivative assets:
Interest-rate-exchange agreements	—		229,877			—		(213,484		)	16,393
Mortgage delivery commitments	—		128			—		—			128
Total derivative assets	—		230,005			—		(213,484		)	16,521
Total assets at fair value	$	—	$	5,784,368		$	—	$	(213,484	)	$	5,570,884
Liabilities:
Derivative liabilities
Interest-rate-exchange agreements	$	—	$	(1,098,547	)	$	—	$	193,243		$	(905,304	)
Total liabilities at fair value	$	—	$	(1,098,547	)	$	—	$	193,243		$	(905,304	)

_______________________

(1)These amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparty. Net cash collateral associated with derivatives, including accrued interest, as of December 31, 2011, totaled $20.2 million.

(2) These securities are corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. Government.

Fair Value on a Nonrecurring Basis [Table Text Block]

The following tables present the fair value of financial assets by level within the fair-value hierarchy which are recorded on a nonrecurring basis at September 30, 2012, and December 31, 2011 (dollars in thousands).

	September 30, 2012
	Level 1		Level 2		Level 3		Total
Held-to-maturity securities:
Private-label residential MBS	$	—	$	—	$	19,403	$	19,403
REO	—		—		356		356
Total assets recorded at fair value on a nonrecurring basis	$	—	$	—	$	19,759	$	19,759

	December 31, 2011
	Level 1		Level 2		Level 3		Total
Held-to-maturity securities:
Private-label residential MBS	$	—	$	—	$	148,952	$	148,952
REO	—		—		905		905
Total assets recorded at fair value on a nonrecurring basis	$	—	$	—	$	149,857	$	149,857

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Trading Securities (Tables)

9 Months Ended

Sep. 30, 2012

Trading Securities [Abstract]

Trading Securities by Major Security Type [Table Text Block]

Our trading securities as of September 30, 2012, and December 31, 2011, were (dollars in thousands):

	September 30, 2012		December 31, 2011
Mortgage-backed-securities (MBS)
United States (U.S.) government-guaranteed – residential	$	17,496	$	18,880
Government sponsored enterprises (GSEs) – residential	5,380		6,663
GSEs – commercial	256,544		248,621
Total	$	279,420	$	274,164

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Available-for-Sale Securities (Tables)

9 Months Ended

Sep. 30, 2012

Schedule of Available-for-sale Securities [Line Items]

Available-for-Sale (AFS) Securities by Major Security Type [Table Text Block]

Our available-for-sale securities as of September 30, 2012, were (dollars in thousands):

			Amounts Recorded in Accumulated Other Comprehensive Loss
	Amortized Cost (1)		Unrealized Gains		Unrealized Losses			Fair  Value
Supranational institutions	$	510,971	$	—	$	(37,555	)	$	473,416
Corporate bonds (2)	307,859		366		—			308,225
U.S. government-owned corporations	339,598		—		(45,998		)	293,600
GSEs	2,132,594		33,577		(17,705		)	2,148,466
	3,291,022		33,943		(101,258		)	3,223,707
MBS
U.S. government guaranteed – residential	76,397		560		—			76,957
GSEs – residential	2,328,012		33,505		—			2,361,517
GSEs – commercial	101,582		333		—			101,915
	2,505,991		34,398		—			2,540,389
Total	$	5,797,013	$	68,341	$	(101,258	)	$	5,764,096

_______________________

(1)Amortized cost of available-for-sale securities includes adjustments made to the cost basis of an investment for accretion, amortization, collection of cash, and fair-value hedge accounting adjustments.

(2) Consists of corporate debentures guaranteed by the Federal Deposit Insurance Corporation (the FDIC) under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. government.

Our available-for-sale securities as of December 31, 2011, were (dollars in thousands):

			Amounts Recorded in Accumulated Other Comprehensive Loss
	Amortized Cost (1)		Unrealized Gains		Unrealized Losses			Fair  Value
Supranational institutions	$	504,630	$	—	$	(35,388	)	$	469,242
Corporate bonds (2)	561,942		2,370		—			564,312
U.S. government-owned corporations	338,169		—		(53,325		)	284,844
GSEs	2,750,131		52,020		(19,730		)	2,782,421
	4,154,872		54,390		(108,443		)	4,100,819
MBS
U.S. government guaranteed – residential	90,882		346		—			91,228
GSEs – residential	978,998		5,810		—			984,808
GSEs – commercial	104,007		—		(663		)	103,344
	1,173,887		6,156		(663		)	1,179,380
Total	$	5,328,759	$	60,546	$	(109,106	)	$	5,280,199

_______________________

(1)Amortized cost of available-for-sale securities includes adjustments made to the cost basis of an investment for accretion, amortization, collection of cash, and fair-value hedge accounting adjustments.

(2)Consists of corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. government.

Proceeds from Sales and Gross Gains and Losses on AFS Securities [Table Text Block]

The following table shows the proceeds from sale and gross gains and losses realized on the sale of our available-for-sale securities (dollars in thousands):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
Proceeds from sale of available-for-sale securities	$	—	$	—	$	—	$	2,127,944
Gross realized gains from sale of available-for-sale securities	$	—	$	—	$	—	$	14,415
Gross realized losses from sale of available-for-sale securities	—		—		—		(1,614		)
Net realized gains from sale of available-for-sale securities	$	—	$	—	$	—	$	12,801

Categories of Investments, Marketable Securities, Available-for-sale Securities [Member]

Schedule of Available-for-sale Securities [Line Items]

AFS Securities in a Continuous Unrealized Loss Position [Table Text Block]

The following table summarizes our available-for-sale securities with unrealized losses as of September 30, 2012, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands): 

	Less than 12 Months				12 Months or More					Total
	Fair  Value		Unrealized  Losses		Fair  Value		Unrealized  Losses			Fair  Value		Unrealized  Losses
Supranational institutions	$	—	$	—	$	473,416	$	(37,555	)	$	473,416	$	(37,555	)
U.S. government-owned corporations	—		—		293,600		(45,998		)	293,600		(45,998		)
GSEs	—		—		124,026		(17,705		)	124,026		(17,705		)
Total temporarily impaired	$	—	$	—	$	891,042	$	(101,258	)	$	891,042	$	(101,258	)

The following table summarizes our available-for-sale securities with unrealized losses as of December 31, 2011, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands):

	Less than 12 Months				12 Months or More					Total
	Fair  Value		Unrealized  Losses		Fair  Value		Unrealized  Losses			Fair  Value		Unrealized  Losses
Supranational institutions	$	—	$	—	$	469,242	$	(35,388	)	$	469,242	$	(35,388	)
U.S. government-owned corporations	—		—		284,844		(53,325		)	284,844		(53,325		)
GSEs	—		—		121,025		(19,730		)	121,025		(19,730		)
	—		—		875,111		(108,443		)	875,111		(108,443		)
MBS
GSEs – commercial	—		—		103,344		(663		)	103,344		(663		)
Total temporarily impaired	$	—	$	—	$	978,455	$	(109,106	)	$	978,455	$	(109,106	)

Investments Classified by Contractual Maturity Date [Table Text Block]

The amortized cost and fair value of our available-for-sale securities by contractual maturity at September 30, 2012 and December 31, 2011, were (dollars in thousands):

	September 30, 2012				December 31, 2011
Year of Maturity	Amortized Cost		Fair  Value		Amortized Cost		Fair  Value
Due in one year or less	$	1,357,937	$	1,367,719	$	1,213,636	$	1,217,440
Due after one year through five years	940,786		964,947		1,957,683		2,008,268
Due after five years through 10 years	—		—		—		—
Due after 10 years	992,299		891,041		983,553		875,111
	3,291,022		3,223,707		4,154,872		4,100,819
MBS (1)	2,505,991		2,540,389		1,173,887		1,179,380
Total	$	5,797,013	$	5,764,096	$	5,328,759	$	5,280,199

_______________________

(1) MBS are not presented by contractual maturity because their expected maturities will likely differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay obligations with or without call or prepayment fees.

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Basis of Presentation

9 Months Ended

Sep. 30, 2012

Basis of Presentation [Abstract]

Basis of Presentation [Text Block]

Basis of Presentation

The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete annual financial statements. In the opinion of management, all adjustments considered necessary have been included. All such adjustments consist of normal recurring accruals. The presentation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. The results of operations for interim periods are not necessarily indicative of the results to be expected for the year ending December 31, 2012. The unaudited financial statements should be read in conjunction with the Federal Home Loan Bank of Boston's audited financial statements and related notes in our Annual Report on Form 10-K for the year ended December 31, 2011, filed with the Securities and Exchange Commission (the SEC) on March 23, 2012 (the 2011 Annual Report). Unless otherwise indicated or the context requires otherwise, all references in this discussion to “the Bank,” "we," "us," "our," or similar references mean the Federal Home Loan Bank of Boston.

XML

Held-to-Maturity Securities (Tables)

9 Months Ended

Sep. 30, 2012

Schedule of Held-to-maturity Securities [Line Items]

HTM Securities by Major Security Type [Table Text Block]

Our held-to-maturity securities as of September 30, 2012, were (dollars in thousands):

	Amortized Cost		Other-Than-Temporary Impairment Recognized in Accumulated Other Comprehensive Loss			Carrying Value		Gross Unrecognized Holding Gains		Gross Unrecognized Holding Losses			Fair Value
U.S. agency obligations	$	14,666	$	—		$	14,666	$	1,435	$	—		$	16,101
State or local housing-finance-agency obligations (HFA securities)	191,969		—			191,969		70		(28,402		)	163,637
GSEs	69,676		—			69,676		1,857		—			71,533
	276,311		—			276,311		3,362		(28,402		)	251,271
MBS
U.S. government guaranteed – residential	41,469		—			41,469		948		—			42,417
U.S. government guaranteed – commercial	463,211		—			463,211		9,021		—			472,232
GSEs – residential	2,523,565		—			2,523,565		84,931		(379		)	2,608,117
GSEs – commercial	1,016,514		—			1,016,514		92,621		—			1,109,135
Private-label – residential	1,725,069		(402,366		)	1,322,703		123,849		(47,017		)	1,399,535
Private-label – commercial	10,335		—			10,335		419		—			10,754
Asset-backed securities (ABS) backed by home equity loans	26,361		(1,173		)	25,188		509		(3,888		)	21,809
	5,806,524		(403,539		)	5,402,985		312,298		(51,284		)	5,663,999
Total	$	6,082,835	$	(403,539	)	$	5,679,296	$	315,660	$	(79,686	)	$	5,915,270

Our held-to-maturity securities as of December 31, 2011, were (dollars in thousands):

	Amortized Cost		Other-Than-Temporary Impairment Recognized in Accumulated Other Comprehensive Loss			Carrying Value		Gross Unrecognized Holding Gains		Gross Unrecognized Holding Losses			Fair Value
U.S. agency obligations	$	18,721	$	—		$	18,721	$	1,697	$	—		$	20,418
HFA securities	202,438		—			202,438		61		(34,459		)	168,040
GSEs	70,950		—			70,950		2,510		—			73,460
	292,109		—			292,109		4,268		(34,459		)	261,918
MBS
U.S. government guaranteed – residential	50,912		—			50,912		934		—			51,846
U.S. government guaranteed – commercial	483,938		—			483,938		4,685		—			488,623
GSEs – residential	3,024,212		—			3,024,212		78,548		(1,105		)	3,101,655
GSEs – commercial	1,247,688		—			1,247,688		86,252		—			1,333,940
Private-label – residential	1,969,237		(449,654		)	1,519,583		18,789		(145,285		)	1,393,087
Private-label – commercial	10,541		—			10,541		549		—			11,090
ABS backed by home equity loans	27,367		(1,342		)	26,025		128		(5,246		)	20,907
	6,813,895		(450,996		)	6,362,899		189,885		(151,636		)	6,401,148
Total	$	7,106,004	$	(450,996	)	$	6,655,008	$	194,153	$	(186,095	)	$	6,663,066

Categories of Investments, Marketable Securities, Held-to-maturity Securities [Member]

Schedule of Held-to-maturity Securities [Line Items]

HTM Securities in a Continuous Unrealized Loss Position [Table Text Block]

The following table summarizes our held-to-maturity securities with unrealized losses as of September 30, 2012, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands). 

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair  Value		Unrealized Losses			Fair Value		Unrealized Losses
HFA securities	$	334	$	(1	)	$	153,689	$	(28,401	)	$	154,023	$	(28,402	)
MBS
GSEs – residential	30,146		(46		)	65,930		(333		)	96,076		(379		)
Private-label – residential	—		—			1,364,825		(330,538		)	1,364,825		(330,538		)
ABS backed by home equity loans	—		—			21,118		(4,593		)	21,118		(4,593		)
	30,146		(46		)	1,451,873		(335,464		)	1,482,019		(335,510		)
Total	$	30,480	$	(47	)	$	1,605,562	$	(363,865	)	$	1,636,042	$	(363,912	)

The following table summarizes our held-to-maturity securities with unrealized losses as of December 31, 2011, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands). 

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair  Value		Unrealized Losses			Fair Value		Unrealized Losses
HFA securities	$	418	$	(2	)	$	150,968	$	(34,457	)	$	151,386	$	(34,459	)
MBS
GSEs – residential	239,995		(558		)	41,723		(547		)	281,718		(1,105		)
Private-label – residential	18,922		(4,138		)	1,369,550		(572,326		)	1,388,472		(576,464		)
ABS backed by home equity loans	—		—			20,906		(6,463		)	20,906		(6,463		)
	258,917		(4,696		)	1,432,179		(579,336		)	1,691,096		(584,032		)
Total	$	259,335	$	(4,698	)	$	1,583,147	$	(613,793	)	$	1,842,482	$	(618,491	)

HTM Securities by Contractual Maturity [Table Text Block]

The amortized cost and fair value of our held-to-maturity securities by contractual maturity at September 30, 2012, and December 31, 2011, are shown below (dollars in thousands). Expected maturities of some securities and MBS may differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay their obligations with or without call or prepayment fees.

	September 30, 2012						December 31, 2011
Year of Maturity	Amortized Cost		Carrying Value (1)		Fair Value		Amortized Cost		Carrying Value (1)		Fair Value
Due in one year or less	$	—	$	—	$	—	$	1,360	$	1,360	$	1,369
Due after one year through five years	70,010		70,010		71,868		71,370		71,370		73,878
Due after five years through 10 years	34,351		34,351		35,436		38,405		38,405		39,733
Due after 10 years	171,950		171,950		143,967		180,974		180,974		146,938
	276,311		276,311		251,271		292,109		292,109		261,918
MBS (2)	5,806,524		5,402,985		5,663,999		6,813,895		6,362,899		6,401,148
Total	$	6,082,835	$	5,679,296	$	5,915,270	$	7,106,004	$	6,655,008	$	6,663,066

_______________________

(1)Carrying value of held-to-maturity securities represents the sum of amortized cost and the amount of noncredit-related other-than-temporary impairment recognized in accumulated other comprehensive loss.

(2) MBS are not presented by contractual maturity because their expected maturities will likely differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay their obligations with or without call or prepayment fees.

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Fair Values (Carrying Value and Fair Value of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	$ 529		$ 16,521
Mandatorily redeemable capital stock	(215,863)		(227,429)
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	306,166
Interest-bearing deposits	261
Securities purchased under agreements to resell	0
Federal funds sold	0
Trading securities	0	[1]
Available-for-sale securities	0	[1]
Held-to-maturity securities	0	[2]
Advances	0
Mortgage loans, net	0
Accrued interest receivable	0
Derivative Assets	0	[1]
Deposits	0
Mandatorily redeemable capital stock	(215,863)
Accrued interest payable	0
Derivative liabilities	0	[1]
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0
Interest-bearing deposits	0
Securities purchased under agreements to resell	5,124,986
Federal funds sold	1,099,996
Trading securities	279,420	[1]
Available-for-sale securities	5,764,096	[1]
Held-to-maturity securities	4,319,536	[2]
Advances	24,362,020
Mortgage loans, net	3,674,029
Accrued interest receivable	95,950
Derivative Assets	116,139	[1]
Deposits	(685,177)
Mandatorily redeemable capital stock	0
Accrued interest payable	(128,966)
Derivative liabilities	(1,065,015)	[1]
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0
Interest-bearing deposits	0
Securities purchased under agreements to resell	0
Federal funds sold	0
Trading securities	0	[1]
Available-for-sale securities	0	[1]
Held-to-maturity securities	1,595,734	[2]
Advances	0
Mortgage loans, net	0
Accrued interest receivable	0
Derivative Assets	0	[1]
Deposits	0
Mandatorily redeemable capital stock	0
Accrued interest payable	0
Derivative liabilities	0	[1]
Netting Adjustments and Cash Collateral [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0
Interest-bearing deposits	0
Securities purchased under agreements to resell	0
Federal funds sold	0
Trading securities	0	[1]
Available-for-sale securities	0	[1]
Held-to-maturity securities	0	[2]
Advances	0
Mortgage loans, net	0
Accrued interest receivable	0
Derivative Assets	(115,610)	[1]
Deposits	0
Mandatorily redeemable capital stock	0
Accrued interest payable	0
Derivative liabilities	115,280	[1]
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	306,166		112,094
Interest-bearing deposits	261		177
Securities purchased under agreements to resell	5,125,000		6,900,000
Federal funds sold	1,100,000		2,270,000
Trading securities	279,420	[1]	274,164
Available-for-sale securities	5,764,096	[1]	5,280,199
Held-to-maturity securities	5,679,296	[2]	6,655,008
Advances	23,915,687		25,194,898
Mortgage loans, net	3,431,534		3,109,223
Accrued interest receivable	95,950		116,517
Derivative Assets	529	[1]	16,521
Deposits	(685,328)		(654,246)
Mandatorily redeemable capital stock	(215,863)		(227,429)
Accrued interest payable	(128,966)		(110,782)
Derivative liabilities	(949,735)	[1]	(905,304)
Total Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	306,166		112,094
Interest-bearing deposits	261		177
Securities purchased under agreements to resell	5,124,986		6,899,645
Federal funds sold	1,099,996		2,269,951
Trading securities	279,420	[1]	274,164
Available-for-sale securities	5,764,096	[1]	5,280,199
Held-to-maturity securities	5,915,270	[2]	6,663,066
Advances	24,362,020		25,718,265
Mortgage loans, net	3,674,029		3,305,265
Accrued interest receivable	95,950		116,517
Derivative Assets	529	[1]	16,521
Deposits	(685,177)		(654,094)
Mandatorily redeemable capital stock	(215,863)		(227,429)
Accrued interest payable	(128,966)		(110,782)
Derivative liabilities	(949,735)	[1]	(905,304)
COs - Bonds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Bonds	0
COs - Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Bonds	(29,024,692)
COs - Bonds [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Bonds	0
COs - Bonds [Member] | Netting Adjustments and Cash Collateral [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Bonds	0
COs - Bonds [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Bonds	(28,238,899)		(29,879,460)
COs - Bonds [Member] | Total Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Bonds	(29,024,692)		(30,655,174)
Discount Notes [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Discount Notes	0
Discount Notes [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Discount Notes	(11,993,960)
Discount Notes [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Discount Notes	0
Discount Notes [Member] | Netting Adjustments and Cash Collateral [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Discount Notes	0
Discount Notes [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Discount Notes	(11,993,572)		(14,651,793)
Discount Notes [Member] | Total Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
CO Discount Notes	(11,993,960)		(14,651,926)
Commitments to Extend Credit for Advances [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0
Commitments to Extend Credit for Advances [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	996
Commitments to Extend Credit for Advances [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0
Commitments to Extend Credit for Advances [Member] | Netting Adjustments and Cash Collateral [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0
Commitments to Extend Credit for Advances [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0		0
Commitments to Extend Credit for Advances [Member] | Total Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	996		2,612
Commitments for Standby Bond Purchases [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0
Commitments for Standby Bond Purchases [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	641
Commitments for Standby Bond Purchases [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0
Commitments for Standby Bond Purchases [Member] | Netting Adjustments and Cash Collateral [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0
Commitments for Standby Bond Purchases [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0		0
Commitments for Standby Bond Purchases [Member] | Total Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	641		1,814
Standby Letters of Credit [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0
Standby Letters of Credit [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	531
Standby Letters of Credit [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0
Standby Letters of Credit [Member] | Netting Adjustments and Cash Collateral [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	0
Standby Letters of Credit [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	531		625
Standby Letters of Credit [Member] | Total Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other	$ 531		$ 625

[1] Carried at fair value on a recurring basis.

[2] Private-label residential MBS and HFA securities are categorized as Level 3. Private-label residential MBS that have suffered other than temporary impairments are measured at fair value on a nonrecurring basis. See the recurring and nonrecurring tables below for more details.

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Affordable Housing Program (Tables)

9 Months Ended

Sep. 30, 2012

Affordable Housing Program [Abstract]

Roll-forward of the AHP Liability[Table Text Block]

The following table is a roll-forward of the AHP liability for the nine months endedSeptember 30, 2012, and the year ended December 31, 2011 (dollars in thousands):

	September 30, 2012			December 31, 2011
Balance at beginning of year	$	34,241		$	23,138
AHP expense for the period	17,160			17,812
AHP direct grant disbursements	(4,313		)	(5,775		)
AHP subsidy for AHP advance disbursements	(1,427		)	(1,371		)
Return of previously disbursed grants and subsidies	72			437
Balance at end of period	$	45,733		$	34,241

XML

Held-to-Maturity Securities Major Security Types (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 6,082,835		$ 7,106,004
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	(403,539)		(450,996)
Carrying Value	5,679,296	[1],[2]	6,655,008	[1],[2]
Gross Unrecognized Holding Gains	315,660		194,153
Gross Unrecognized Holding Losses	(79,686)		(186,095)
Fair Value	5,915,270		6,663,066
U.S. Agency Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	14,666		18,721
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	0		0
Carrying Value	14,666		18,721
Gross Unrecognized Holding Gains	1,435		1,697
Gross Unrecognized Holding Losses	0		0
Fair Value	16,101		20,418
HFA Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	191,969		202,438
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	0		0
Carrying Value	191,969		202,438
Gross Unrecognized Holding Gains	70		61
Gross Unrecognized Holding Losses	(28,402)		(34,459)
Fair Value	163,637		168,040
GSEs [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	69,676		70,950
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	0		0
Carrying Value	69,676		70,950
Gross Unrecognized Holding Gains	1,857		2,510
Gross Unrecognized Holding Losses	0		0
Fair Value	71,533		73,460
Other Than Mortgage-backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	276,311		292,109
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	0		0
Carrying Value	276,311	[1]	292,109	[1]
Gross Unrecognized Holding Gains	3,362		4,268
Gross Unrecognized Holding Losses	(28,402)		(34,459)
Fair Value	251,271		261,918
U.S. Government Guaranteed - Residential MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	41,469		50,912
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	0		0
Carrying Value	41,469		50,912
Gross Unrecognized Holding Gains	948		934
Gross Unrecognized Holding Losses	0		0
Fair Value	42,417		51,846
U.S. Government Guaranteed - Commercial MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	463,211		483,938
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	0		0
Carrying Value	463,211		483,938
Gross Unrecognized Holding Gains	9,021		4,685
Gross Unrecognized Holding Losses	0		0
Fair Value	472,232		488,623
GSEs – Residential MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,523,565		3,024,212
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	0		0
Carrying Value	2,523,565		3,024,212
Gross Unrecognized Holding Gains	84,931		78,548
Gross Unrecognized Holding Losses	(379)		(1,105)
Fair Value	2,608,117		3,101,655
GSEs – Commercial MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,016,514		1,247,688
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	0		0
Carrying Value	1,016,514		1,247,688
Gross Unrecognized Holding Gains	92,621		86,252
Gross Unrecognized Holding Losses	0		0
Fair Value	1,109,135		1,333,940
Private-Label Residential MBS[Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,725,069		1,969,237
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	(402,366)		(449,654)
Carrying Value	1,322,703		1,519,583
Gross Unrecognized Holding Gains	123,849		18,789
Gross Unrecognized Holding Losses	(47,017)		(145,285)
Fair Value	1,399,535		1,393,087
Private-Label – Commercial MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	10,335		10,541
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	0		0
Carrying Value	10,335		10,541
Gross Unrecognized Holding Gains	419		549
Gross Unrecognized Holding Losses	0		0
Fair Value	10,754		11,090
ABS Backed by Home Equity Loans [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	26,361		27,367
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	(1,173)		(1,342)
Carrying Value	25,188		26,025
Gross Unrecognized Holding Gains	509		128
Gross Unrecognized Holding Losses	(3,888)		(5,246)
Fair Value	21,809		20,907
MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	5,806,524	[3]	6,813,895	[3]
Other Than Temporary Impairment Recognized in Accumulated Other Comprehensive Loss	(403,539)		(450,996)
Carrying Value	5,402,985	[1],[3]	6,362,899	[1],[3]
Gross Unrecognized Holding Gains	312,298		189,885
Gross Unrecognized Holding Losses	(51,284)		(151,636)
Fair Value	$ 5,663,999	[3]	$ 6,401,148	[3]

[1] Carrying value of held-to-maturity securities represents the sum of amortized cost and the amount of noncredit-related other-than-temporary impairment recognized in accumulated other comprehensive loss.

[2] Fair values of held-to-maturity securities were $5,915,270 and $6,663,066 at September 30, 2012, and December 31, 2011, respectively.

[3] MBS are not presented by contractual maturity because their expected maturities will likely differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay their obligations with or without call or prepayment fees.

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Derivatives and Hedging Activities (Derivatives in Statement of Condition) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives Designated as Hedging Instruments	$ 16,090,400		$ 20,026,022
Derivative Assets Designated as Hedging Instruments	115,475		229,091
Derivative Liabilities Designated as Hedging Instruments	(1,028,955)		(1,068,041)
Notional Amount of Derivatives Not Designated as Hedging Instruments	1,506,756		553,484
Derivatives Assets Not Designated as Hedging Instruments	664		914
Derivatives Liabilities Not Designated as Hedging Instruments	(36,060)		(30,506)
Notional Amount of Derivatives	17,597,156		20,579,506
Derivative Assets, Before Netting and Collateral Adjustments	116,139		230,005
Derivative Liabilities, Before Netting and Collateral Adjustments	(1,065,015)		(1,098,547)
Derivative Assets	529		16,521
Derivative Liabilities	(949,735)		(905,304)
Netting Adjustments [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Netting and Collateral Adjustments	(115,280)	[1]	(193,438)	[1]
Derivative Liability, Netting and Collateral Adjustments	115,280	[1]	193,438	[1]
Cash Collateral Received from Counterparties, Including Accrued Interest [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Netting and Collateral Adjustments	(330)		(20,046)
Derivative Liability, Netting and Collateral Adjustments	0		(195)
Interest-Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives Designated as Hedging Instruments	14,840,400		19,326,022
Derivative Assets Designated as Hedging Instruments	115,475		229,091
Derivative Liabilities Designated as Hedging Instruments	(964,100)		(1,036,060)
Notional Amount of Derivatives Not Designated as Hedging Instruments	1,165,250		235,750
Derivatives Assets Not Designated as Hedging Instruments	537		0
Derivatives Liabilities Not Designated as Hedging Instruments	(35,932)		(30,506)
Interest-Rate Futures/Forwards [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives Designated as Hedging Instruments	1,250,000		700,000
Derivative Assets Designated as Hedging Instruments	0		0
Derivative Liabilities Designated as Hedging Instruments	(64,855)		(31,981)
Interest-Rate Cap or Floors [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives Not Designated as Hedging Instruments	300,000		300,000
Derivatives Assets Not Designated as Hedging Instruments	42		786
Derivatives Liabilities Not Designated as Hedging Instruments	0		0
Mortgage-Delivery Commmitment [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives Not Designated as Hedging Instruments	41,506	[2]	17,734	[2]
Derivatives Assets Not Designated as Hedging Instruments	85	[2]	128	[2]
Derivatives Liabilities Not Designated as Hedging Instruments	$ (128)	[2]	$ 0	[2]

[1] Amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions.

[2] Mortgage-delivery commitments are classified as derivatives with changes in fair value recorded in other income.

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Statements of Condition (unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
ASSETS
Cash and due from banks	$ 306,166		$ 112,094
Interest-bearing deposits	261		177
Securities purchased under agreements to resell	5,125,000		6,900,000
Federal funds sold	1,100,000		2,270,000
Investment securities:
Trading securities	279,420		274,164
Available-for-sale securities - includes $8,313 and $119,118 pledged as collateral at September 30, 2012, and December 31, 2011, respectively that may be repledged	5,764,096		5,280,199
Held-to-maturity securities - includes $105,687 and $128,073 pledged as collateral at September 30, 2012, and December 31, 2011, respectively that may be repledged	5,679,296	[1],[2]	6,655,008	[1],[2]
Total investment securities	11,722,812		12,209,371
Advances	23,915,687		25,194,898
Mortgage loans held for portfolio, net of allowance for credit losses of $5,514 and $7,800 at September 30, 2012, and December 31, 2011, respectively	3,431,534		3,109,223
Accrued interest receivable	95,950		116,517
Premises, software, and equipment, net	3,907		4,518
Derivative assets, net	529		16,521
Other assets	40,689		35,018
Total Assets	45,742,535		49,968,337
Deposits:
Interest-bearing	648,781		627,127
Non-interest-bearing	36,547		27,119
Total Deposits	685,328		654,246
Consolidated obligations, net
Bonds	28,238,899		29,879,460
Discount notes	11,993,572		14,651,793
Total consolidated obligations	40,232,471		44,531,253
Mandatorily redeemable capital stock	215,863		227,429
Accrued interest payable	128,966		110,782
Affordable Housing Program (AHP) payable	45,733		34,241
Derivative liabilities, net	949,735		905,304
Other liabilities	17,863		16,048
Total liabilities	42,275,959		46,479,303
Commitments and contingencies (Note 18)
Capital
Capital stock – Class B – putable ($100 par value), 34,330 shares and 36,253 shares issued and outstanding at September 30, 2012, and December 31, 2011, respectively	3,433,016		3,625,348
Retained earnings:
Unrestricted	484,574		375,158
Restricted	53,660		22,939
Total retained earnings	538,234		398,097
Accumulated other comprehensive loss	(504,674)		(534,411)
Total capital	3,466,576		3,489,034
Total Liabilities and Capital	$ 45,742,535		$ 49,968,337

[1] Carrying value of held-to-maturity securities represents the sum of amortized cost and the amount of noncredit-related other-than-temporary impairment recognized in accumulated other comprehensive loss.

[2] Fair values of held-to-maturity securities were $5,915,270 and $6,663,066 at September 30, 2012, and December 31, 2011, respectively.

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Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

Off-Balance Sheet Commitments [Table Text Block]

The following table sets forth our off-balance-sheet commitments as of September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012						December 31, 2011
	Expire within one year		Expire after one year		Total		Expire within one year		Expire after one year		Total
Standby letters of credit outstanding (1)	$	848,249	$	377,808	$	1,226,057	$	832,140	$	402,932	$	1,235,072
Commitments for standby bond purchases	151,615		10,000		161,615		—		191,065		191,065
Commitments for unused lines of credit - advances (2)	1,304,244		—		1,304,244		1,287,084		—		1,287,084
Commitments to make additional advances	67,838		61,895		129,733		26,264		54,281		80,545
Commitments to invest in mortgage loans	41,506		—		41,506		17,734		—		17,734
Unsettled CO bonds, at par (3)	475,000		—		475,000		165,300		—		165,300

__________________________

(1) This row excludes commitments to issue standby letters of credit that expire within one year totaling $26.4 million and commitments that expire after one year totaling $900,000 as of September 30, 2012. Also excluded are commitments to issue standby letters of credit that expire within one year totaling $21.1 million at December 31, 2011.

(2) Commitments for unused line-of-credit advances are generally for periods of up to 12 months. Since many of these commitments are not expected to be drawn upon, the total commitment amount does not necessarily indicate future liquidity requirements.

(3) We had $265.0 million in unsettled CO bonds that were hedged with associated interest-rate swaps at September 30, 2012. We had $15.0 million in unsettled CO bonds that were hedged with associated interest-rate swaps at December 31, 2011.

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Statements of Capital (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of period			$ 3,489,034	$ 3,275,505
Proceeds from sale of capital stock			46,094	60,145
Repurchase of capital stock			(237,412)
Shares reclassified to mandatorily redeemable capital stock			(1,014)	(140,821)
Comprehensive income	74,588	28,530	183,345	216,279
Cash dividends on capital stock			(13,471)	(7,980)
Period end	3,466,576	3,403,128	3,466,576	3,403,128
Capital Stock Class B - Putable
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of period, shares			36,253	36,644
Beginning of period			3,625,348	3,664,425
Proceeds from sale of capital stock, shares			461	601
Proceeds from sale of capital stock			46,094	60,145
Repurchase of capital stock, shares			(2,374)
Repurchase of capital stock			(237,412)
Shares reclassified to mandatorily redeemable capital stock, shares			(10)	(1,408)
Shares reclassified to mandatorily redeemable capital stock			(1,014)	(140,821)
Period end, shares	34,330	35,837	34,330	35,837
Period end	3,433,016	3,583,749	3,433,016	3,583,749
Retained Earnings, Unrestricted
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of period			375,158	249,191
Comprehensive income			122,887	84,888
Cash dividends on capital stock			(13,471)	(7,980)
Period end	484,574	326,099	484,574	326,099
Retained Earnings, Restricted
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of period			22,939	0
Comprehensive income			30,721	9,997
Period end	53,660	9,997	53,660	9,997
Retained Earnings, Total
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of period			398,097	249,191
Comprehensive income			153,608	94,885
Cash dividends on capital stock			(13,471)	(7,980)
Period end	538,234	336,096	538,234	336,096
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of period			(534,411)	(638,111)
Comprehensive income			29,737	121,394
Period end	$ (504,674)	$ (516,717)	$ (504,674)	$ (516,717)

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Other-Than-Temporary Impairment (Significant Inputs) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Other than Temporary Impairment, Disclosure [Line Items]
Par Value	$ 200,500
Prime [Member] | Private-Label Residential MBS[Member]
Other than Temporary Impairment, Disclosure [Line Items]
Par Value	1,411
Prime [Member] | Securitization in 2004 and Earlier [Member] | Private-Label Residential MBS[Member]
Other than Temporary Impairment, Disclosure [Line Items]
Par Value	1,411	[1]
Project Prepayment Rates - Weighted Average Percent	6.30%	[1]
Projected Prepayment Rates, Range Percent	6.30%	[1]
Other than Temporary Impairment Losses Recognized In Earnings Credit Losses on Debt Securities Held Assumption for Measurement Default Rate	30.00%	[1]
Projected Default Rates, Range Percent	30.00%	[1]
Projected Loss Severities, Weighted Average Percent	47.70%	[1]
Projected Loss Severity, Range Percent	47.70%	[1]
Current Credit Enhancement, Weighted Average Percent	19.10%	[1]
Current Credit Enhancement, Range Percent	19.10%	[1]
Alt-A [Member] | Private-Label Residential MBS[Member]
Other than Temporary Impairment, Disclosure [Line Items]
Par Value	199,089	[1]
Project Prepayment Rates - Weighted Average Percent	4.30%	[1]
Other than Temporary Impairment Losses Recognized In Earnings Credit Losses on Debt Securities Held Assumption for Measurement Default Rate	67.10%	[1]
Projected Loss Severities, Weighted Average Percent	53.40%	[1]
Current Credit Enhancement, Weighted Average Percent	18.40%	[1]
Alt-A [Member] | Securitization in 2007 [Member] | Private-Label Residential MBS[Member]
Other than Temporary Impairment, Disclosure [Line Items]
Par Value	11,310	[1]
Project Prepayment Rates - Weighted Average Percent	2.80%	[1]
Projected Prepayment Rates, Range Percent	2.80%	[1]
Other than Temporary Impairment Losses Recognized In Earnings Credit Losses on Debt Securities Held Assumption for Measurement Default Rate	74.80%	[1]
Projected Default Rates, Range Percent	74.80%	[1]
Projected Loss Severities, Weighted Average Percent	50.80%	[1]
Projected Loss Severity, Range Percent	50.80%	[1]
Current Credit Enhancement, Weighted Average Percent	36.40%	[1]
Current Credit Enhancement, Range Percent	36.40%	[1]
Alt-A [Member] | Securitization in 2006 [Member] | Private-Label Residential MBS[Member]
Other than Temporary Impairment, Disclosure [Line Items]
Par Value	153,662	[1]
Project Prepayment Rates - Weighted Average Percent	4.00%	[1]
Other than Temporary Impairment Losses Recognized In Earnings Credit Losses on Debt Securities Held Assumption for Measurement Default Rate	69.40%	[1]
Projected Loss Severities, Weighted Average Percent	53.10%	[1]
Current Credit Enhancement, Weighted Average Percent	21.20%	[1]
Alt-A [Member] | Securitization in 2005 [Member] | Private-Label Residential MBS[Member]
Other than Temporary Impairment, Disclosure [Line Items]
Par Value	$ 34,117	[1]
Project Prepayment Rates - Weighted Average Percent	5.70%	[1]
Projected Prepayment Rates, Range Percent	5.70%	[1]
Other than Temporary Impairment Losses Recognized In Earnings Credit Losses on Debt Securities Held Assumption for Measurement Default Rate	54.30%	[1]
Projected Default Rates, Range Percent	54.30%	[1]
Projected Loss Severities, Weighted Average Percent	55.30%	[1]
Projected Loss Severity, Range Percent	55.30%	[1]
Current Credit Enhancement, Weighted Average Percent	0.00%	[1]
Current Credit Enhancement, Range Percent	0.00%	[1]
Minimum [Member] | Alt-A [Member] | Private-Label Residential MBS[Member]
Other than Temporary Impairment, Disclosure [Line Items]
Projected Prepayment Rates, Range Percent	2.80%	[1]
Projected Default Rates, Range Percent	52.10%	[1]
Projected Loss Severity, Range Percent	50.80%	[1]
Current Credit Enhancement, Range Percent	0.00%	[1]
Minimum [Member] | Alt-A [Member] | Securitization in 2006 [Member] | Private-Label Residential MBS[Member]
Other than Temporary Impairment, Disclosure [Line Items]
Projected Prepayment Rates, Range Percent	2.80%	[1]
Projected Default Rates, Range Percent	52.10%	[1]
Projected Loss Severity, Range Percent	50.80%	[1]
Current Credit Enhancement, Range Percent	0.00%	[1]
Maximum [Member] | Alt-A [Member] | Private-Label Residential MBS[Member]
Other than Temporary Impairment, Disclosure [Line Items]
Projected Prepayment Rates, Range Percent	6.50%	[1]
Projected Default Rates, Range Percent	79.60%	[1]
Projected Loss Severity, Range Percent	55.70%	[1]
Current Credit Enhancement, Range Percent	36.40%	[1]
Maximum [Member] | Alt-A [Member] | Securitization in 2006 [Member] | Private-Label Residential MBS[Member]
Other than Temporary Impairment, Disclosure [Line Items]
Projected Prepayment Rates, Range Percent	6.50%	[1]
Projected Default Rates, Range Percent	79.60%	[1]
Projected Loss Severity, Range Percent	55.70%	[1]
Current Credit Enhancement, Range Percent	35.50%	[1]

[1] Securities are classified in the table above based upon the current performance characteristics of the underlying loan pool and therefore the manner in which the loan pool backing the security has been modeled (as prime, Alt-A, or subprime), rather than their classification of the security at the time of issuance.

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Mortgage Loans Held for Portfolio (Tables)

9 Months Ended

Sep. 30, 2012

Mortgage Loans on Real Estate [Abstract]

Mortgage Loans Held for Portfolio [Table Text Block]

The following table presents certain characteristics of the mortgage loans in which we have invested (dollars in thousands):

	September 30, 2012			December 31, 2011
Real estate
Fixed-rate 15-year single-family mortgages	$	681,720		$	646,539
Fixed-rate 20- and 30-year single-family mortgages	2,700,404			2,439,475
Premiums	55,931			35,420
Discounts	(4,415		)	(5,708		)
Deferred derivative gains and losses, net	3,408			1,297
Total mortgage loans held for portfolio	3,437,048			3,117,023
Less: allowance for credit losses	(5,514		)	(7,800		)
Total mortgage loans, net of allowance for credit losses	$	3,431,534		$	3,109,223

Mortgage Loans Held for Portfolio by Collateral/Guarantee Type [Table Text Block]

The following table details the par value of mortgage loans held for portfolio (dollars in thousands):

	September 30, 2012		December 31, 2011
Conventional mortgage loans	$	2,982,391	$	2,777,100
Government mortgage loans	399,733		308,914
Total par value	$	3,382,124	$	3,086,014

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Advances (Narratives) (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Advances [Line Items]
Putable Federal Home Loan Bank Advances	$ 3,600,000,000	$ 4,700,000,000
Callable Federal Home Loan Bank Advances	32,500,000	2,500,000
Percent Of Fixed Rate Advances Swapped To Adjustable Rate	32.80%	39.00%
Percent Of Adjustable Rate Advances Swapped To Different Adjustable Rate Index	3.70%	0.50%
Federal Home Loan Bank Advances [Member]
Credit Risk Exposure and Security Terms [Abstract]
Total outstanding advances greater than $1 billion per borrower	5,000,000,000	7,400,000,000
Minimum amount of advances outstanding per borrower disclosed herein	$ 1,000,000,000
Number of financial institutions with more than $1.0 billion advances borrowing	2	3
Total outstanding advances greater than $1 billion per borrower as a percentage of advances outstanding	21.30%	30.00%
Minimum [Member]
Advances [Line Items]
Interest rates of advances outstanding	(0.03%)	0.00%
Maximum [Member]
Advances [Line Items]
Interest rates of advances outstanding	8.37%	8.37%

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Accumulated Other Comprehensive Income

9 Months Ended

Sep. 30, 2012

Accumulated Other Comprehensive Income (Loss) [Abstract]

Accumulated Other Comprehensive Loss [Text Block]

Accumulated Other Comprehensive Loss

The following table presents a summary of changes in accumulated other comprehensive loss for the nine months ended September 30, 2012, and 2011 (dollars in thousands):

	Net Unrealized Loss on Available-for-Sale Securities			Net Noncredit Portion of Other-Than-Temporary Impairment Losses on Held-to-Maturity Securities			Net Unrealized Loss Relating to Hedging Activities			Pension and Postretirement Benefits			Total Accumulated Other Comprehensive Loss
Balance, December 31, 2010	$	(15,193	)	$	(621,528	)	$	(341	)	$	(1,049	)	$	(638,111	)
Other comprehensive income (loss)	(18,353		)	166,803			(26,832		)	(224		)	121,394
Balance, September 30, 2011	$	(33,546	)	$	(454,725	)	$	(27,173	)	$	(1,273	)	$	(516,717	)
Balance, December 31, 2011	$	(48,560	)	$	(450,996	)	$	(32,308	)	$	(2,547	)	$	(534,411	)
Other comprehensive (loss) income	15,643			47,457			(32,863		)	(500		)	29,737
Balance, September 30, 2012	$	(32,917	)	$	(403,539	)	$	(65,171	)	$	(3,047	)	$	(504,674	)

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Allowance for Credit Losses (Tables)

9 Months Ended

Sep. 30, 2012

Allowance for Credit Losses [Abstract]

Rollforward of Allowance for Credit Losses on Mortgage Loans [Table Text Block]

The following table presents a roll-forward of the allowance for credit losses on conventional mortgage loans for the three and nine months endedSeptember 30, 2012, and 2011, as well as the recorded investment in mortgage loans by impairment methodology at September 30, 2012, and September 30, 2011 (dollars in thousands). The recorded investment in a loan is the par amount of the loan, adjusted for accrued interest, unamortized premiums or discounts, deferred derivative gains and losses, and direct write-downs. The recorded investment is net of any valuation allowance.

	For the Three Months Ended September 30,					For the Nine Months Ended September 30,
	2012			2011		2012			2011
Allowance for credit losses
Balance at beginning of period	$	6,114		$	7,181	$	7,800		$	8,653
Charge-offs	(77		)	—		(229		)	(14		)
Reduction of provision for credit losses	(523		)	—		(2,057		)	(1,458		)
Balance at end of period	$	5,514		$	7,181	$	5,514		$	7,181
Ending balance, individually evaluated for impairment	$	—		$	—	$	—		$	—
Ending balance, collectively evaluated for impairment	$	5,514		$	7,181	$	5,514		$	7,181
Recorded investment, end of period (1)
Individually evaluated for impairment	$	—		$	—	$	—		$	—
Collectively evaluated for impairment	$	3,043,457		$	2,832,696	$	3,043,457		$	2,832,696

_________________________

(1) This amount excludes government mortgage loans because we make no allowance for credit losses based on our investments in government mortgage loans, as discussed above under — Government Mortgage Loans Held for Portfolio.

Recorded Investment in Delinquent Mortgage Loans [Table Text Block]

The tables below set forth certain key credit quality indicators for our investments in mortgage loans at September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012
	Recorded Investment in Conventional Mortgage Loans			Recorded Investment in Government Mortgage Loans			Total
Past due 30-59 days delinquent	$	38,867		$	15,481		$	54,348
Past due 60-89 days delinquent	12,907			3,746			16,653
Past due 90 days or more delinquent	51,240			24,754			75,994
Total past due	103,014			43,981			146,995
Total current loans	2,940,443			367,540			3,307,983
Total mortgage loans	$	3,043,457		$	411,521		$	3,454,978
Other delinquency statistics
In process of foreclosure, included above (1)	$	22,784		$	11,326		$	34,110
Serious delinquency rate (2)	1.70		%	6.02		%	2.21		%
Past due 90 days or more still accruing interest	$	—		$	24,754		$	24,754
Loans on nonaccrual status (3)	$	51,240		$	—		$	51,240

_______________________

(1) Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu of foreclosure has been reported.

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

(3) Includes conventional mortgage loans with contractual principal or interest payments 90 days or more past due and not accruing interest.

	December 31, 2011
	Recorded Investment in Conventional Mortgage Loans			Recorded Investment in Government Mortgage Loans			Total
Past due 30-59 days delinquent	$	41,311		$	15,477		$	56,788
Past due 60-89 days delinquent	11,656			5,973			17,629
Past due 90 days or more delinquent	55,876			24,925			80,801
Total past due	108,843			46,375			155,218
Total current loans	2,710,526			269,101			2,979,627
Total mortgage loans	$	2,819,369		$	315,476		$	3,134,845
Other delinquency statistics
In process of foreclosure, included above (1)	$	32,344		$	7,413		$	39,757
Serious delinquency rate (2)	1.99		%	7.90		%	2.59		%
Past due 90 days or more still accruing interest	$	—		$	24,925		$	24,925
Loans on nonaccrual status (3)	$	55,876		$	—		$	55,876

_______________________

(1) Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu of foreclosure has been reported.

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

(3) Includes conventional mortgage loans with contractual principal or interest payments 90 days or more past due and not accruing interest.

Impact of Loss Mitigating Features of Conventional Mortgage Loans [Table Text Block]

The following table demonstrates the impact on our estimate of the allowance for credit losses resulting from the loss-mitigating features of conventional mortgage loans (dollars in thousands).

	September 30, 2012			December 31, 2011
Total estimated losses	$	10,077		$	10,274
Less: estimated losses in excess of the first-loss account, to be absorbed by participating financial institutions	(3,879		)	(1,622		)
Less: estimated performance-based credit-enhancement fees available for recapture	(684		)	(852		)
Net allowance for credit losses	$	5,514		$	7,800

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Fair Values

9 Months Ended

Sep. 30, 2012

Fair Value Disclosures [Abstract]

Fair Value [Text Block]

Fair Values

The carrying values, fair values and fair-value hierarchy of our financial instruments at September 30, 2012 were as follows (dollars in thousands):

	September 30, 2012
	Carrying Value			Total Fair Value			Level 1			Level 2			Level 3		Netting Adjustments and Cash Collateral
Financial instruments
Assets:
Cash and due from banks	$	306,166		$	306,166		$	306,166		$	—		$	—	$	—
Interest-bearing deposits	261			261			261			—			—		—
Securities purchased under agreements to resell	5,125,000			5,124,986			—			5,124,986			—		—
Federal funds sold	1,100,000			1,099,996			—			1,099,996			—		—
Trading securities(1)	279,420			279,420			—			279,420			—		—
Available-for-sale securities(1)	5,764,096			5,764,096			—			5,764,096			—		—
Held-to-maturity securities(2)	5,679,296			5,915,270			—			4,319,536			1,595,734		—
Advances	23,915,687			24,362,020			—			24,362,020			—		—
Mortgage loans, net	3,431,534			3,674,029			—			3,674,029			—		—
Accrued interest receivable	95,950			95,950			—			95,950			—		—
Derivative assets(1)	529			529			—			116,139			—		(115,610		)
Liabilities:
Deposits	(685,328		)	(685,177		)	—			(685,177		)	—		—
COs:
Bonds	(28,238,899		)	(29,024,692		)	—			(29,024,692		)	—		—
Discount notes	(11,993,572		)	(11,993,960		)	—			(11,993,960		)	—		—
Mandatorily redeemable capital stock	(215,863		)	(215,863		)	(215,863		)	—			—		—
Accrued interest payable	(128,966		)	(128,966		)	—			(128,966		)	—		—
Derivative liabilities(1)	(949,735		)	(949,735		)	—			(1,065,015		)	—		115,280
Other:
Commitments to extend credit for advances	—			996			—			996			—		—
Standby bond-purchase agreements	—			641			—			641			—		—
Standby letters of credit	(531		)	(531		)	—			(531		)	—		—

_______________________

(1) Carried at fair value on a recurring basis.

(2) Private-label residential MBS and HFA securities are categorized as Level 3. Private-label residential MBS that have suffered other than temporary impairments are measured at fair value on a nonrecurring basis. See the recurring and nonrecurring tables below for more details.

The carrying values and fair values of our financial instruments at December 31, 2011, were as follows (dollars in thousands):

	December 31, 2011
	Carrying Value			Fair Value
Financial instruments
Assets:
Cash and due from banks	$	112,094		$	112,094
Interest-bearing deposits	177			177
Securities purchased under agreements to resell	6,900,000			6,899,645
Federal funds sold	2,270,000			2,269,951
Trading securities	274,164			274,164
Available-for-sale securities	5,280,199			5,280,199
Held-to-maturity securities	6,655,008			6,663,066
Advances	25,194,898			25,718,265
Mortgage loans, net	3,109,223			3,305,265
Accrued interest receivable	116,517			116,517
Derivative assets	16,521			16,521
Liabilities:
Deposits	(654,246		)	(654,094		)
COs:
Bonds	(29,879,460		)	(30,655,174		)
Discount notes	(14,651,793		)	(14,651,926		)
Mandatorily redeemable capital stock	(227,429		)	(227,429		)
Accrued interest payable	(110,782		)	(110,782		)
Derivative liabilities	(905,304		)	(905,304		)
Other:
Commitments to extend credit for advances	—			2,612
Standby bond-purchase agreements	—			1,814
Standby letters of credit	(625		)	(625		)

Fair-Value Methodologies and Techniques.

We have determined the fair-value amounts above using available market and other pertinent information and our best judgment of appropriate valuation methods. Although we use our best judgment in estimating the fair value of these financial instruments, there are inherent limitations in any estimation technique or valuation methodology. For example, because an active secondary market does not exist for a portion of our financial instruments, in certain cases, fair values are not subject to precise quantification or verification and may change as economic and market factors and evaluation of those factors change. Therefore, these fair values are not necessarily indicative of the amounts that would be realized in current market transactions, although they do reflect our judgment of how a market participant would estimate the fair values.

Fair-Value Hierarchy. Fair value is the price in an orderly transaction between market participants to sell an asset or transfer a liability in the principal (or most advantageous) market for the asset or liability at the measurement date (an exit price).

We record trading securities, available-for-sale securities, derivative assets, and derivative liabilities at fair value on a recurring basis and on occasion, certain private-label MBS and REO on a nonrecurring basis. The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The inputs are evaluated and an overall level for the fair-value measurement is determined. This overall level is an indication of market observability of the fair-value measurement for the asset or liability.

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

Level 1Quoted prices (unadjusted) for identical assets or liabilities in an active market that the reporting entity

can access on the measurement date.

Level 2Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. If the asset or liability has a specified or 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; (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, volatilities, and prepayment speeds); and (4) inputs that are derived principally from or corroborated by observable market data (e.g., implied spreads).

Level 3Unobservable inputs for the asset or liability.

We review the 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 nine months endedSeptember 30, 2012 and 2011.

Summary of Valuation Methodologies and Primary Inputs

Cash and Due from Banks. The fair value approximates the recorded carrying value.

Interest-Bearing Deposits. The fair value approximates the recorded carrying value.

Securities Purchased under Agreements to Resell. The fair value is determined by calculating the present value of expected future cash flows. The discount rates used in these calculations are the rates for securities with similar terms.

Federal Funds Sold. The fair value is determined by calculating the present value of the expected future cash flows. The discount rates used in these calculations are the rates for federal funds with similar terms.

Investment Securities. We determine the fair values of our investment securities, other than HFA floating-rate securities, based on prices obtained for each of these securities that we request from four designated third-party pricing vendors. The fair value of each such security is the average of such vendor prices that are within a cluster pricing tolerance range. A cluster is defined as a group of available vendor prices for a given security that is within a defined price tolerance range of the median vendor price depending on the security type. An outlier is any vendor price that is outside of the defined cluster and is evaluated for reasonableness. The use of the average of available vendor prices within a cluster and the evaluation of reasonableness of outlier prices does not discard available information. In addition, we review the fair values the method produces for reasonableness.

We request prices on each of our securities subject to this fair-value method from four third-party vendors, when available. These pricing vendors use methods that generally employ, but are not limited to, benchmark yields, recent trades, dealer estimates, valuation models, benchmarking of like securities, sector groupings, and/or matrix pricing. We establish a median price for each security using a formula that is based on the number of prices received:

• if four prices are received, the average of the two middle prices is used;

• if three prices are received, the middle price is used;

• if two prices are received, the average of the two prices is used; and

• if one price is received, it is used subject to validation as described below.

Vendor prices that are outside of a defined cluster are identified as outliers and are subject to additional review 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, or use of internal model prices, which we believe reflect the facts and circumstances that a market participant would consider. We also perform this analysis in those limited instances where no third-party vendor price or only one third-party vendor price is available to determine fair value. If the analysis indicates that an outlier (or outliers) is (are) not representative of fair value and that the average of the vendor prices within the tolerance threshold of the median price is the best estimate, then we use the average of the vendor prices within the tolerance threshold of the median price as the final price. If, on the other hand, we determine that an outlier (or some other price identified in the analysis) is a better estimate of fair value, then the outlier (or the other price as appropriate) is used as the final price. In all cases, the final price is used to determine the fair value of the security.

As of September 30, 2012, four vendor prices were received for 93 percent of our investment securities and the final prices for substantially all of those securities were computed by averaging the four prices. Substantially all of our securities were priced by at least three vendors. The relative proximity of the prices received supports our conclusion that the final computed prices are reasonable estimates of fair value. Based on the current lack of market activity for private-label residential MBS, the nonrecurring fair-value measurements for such securities as of September 30, 2012, and December 31, 2011, fell within Level 3 of the fair-value hierarchy. Our fixed-rate HFA securities also fall within Level 3 of the fair-value hierarchy due to the current lack of market activities for these bonds.

Investment Securities – HFA Floating Rate Securities. The fair value isdetermined by calculating the present value of the expected future cash flows. The discount rates used in these calculations are the rates for securities with similar terms. Our floating rate HFA securities also fall within level 3 of the fair-value hierarchy due to the current lack of market activities for these bonds.

Advances. We determine the fair value of advances by calculating the present value of expected future cash flows from the advances and excluding the amount of accrued interest receivable. The discount rates used in these calculations are the current replacement rates for advances with similar terms. We calculate our replacement advance rates at a spread to our cost of funds. Our cost of funds approximates the CO curve. See — COs within this note for a discussion of the CO curve. We use market-based expectations of future interest-rate volatility implied from current market prices for similar options to estimate the fair values of advances with optionality. In accordance with the Finance Agency's advances regulations, advances with a maturity or repricing period greater than six months require a prepayment fee sufficient to make us financially indifferent to the borrower's decision to prepay the advances. Therefore, the fair value of advances does not assume prepayment risk. We do not account for credit risk in determining the fair value of our advances due to the strong credit protections that mitigate the credit risk associated with advances. Collateral requirements for advances provide surety for the repayment such that the probability of credit losses on advances is very low. We have the ability to establish a blanket lien on all financial assets of most members, and in the case of federally insured depository institutions, our lien has a statutory priority over all other creditors with respect to collateral that has not been perfected by other parties. All of these factors serve to mitigate credit risk on advances.

Mortgage Loans. The fair values for mortgage loans are determined based on quoted market prices of similar mortgage-loans adjusted for credit and liquidity risk.

REO. Fair value is derived from third-party valuations of the property, which fall within level 3 of the fair-value hierarchy.

Accrued Interest Receivable and Payable. The fair value approximates the recorded carrying value.

Derivative Assets/Liabilities – Interest-Rate-Exchange Agreements. We base the fair values of interest-rate-exchange agreements on available market prices of derivatives having similar terms, including accrued interest receivable and payable. The fair value is based on the LIBOR swap curve and forward rates at period-end and, for agreements containing options, the market's expectations of future interest-rate volatility implied from current market prices of similar options. The fair-value methodology uses standard valuation techniques for derivatives such as discounted cash-flow analysis and comparisons with similar instruments. The discounted cash-flow model uses market-observable inputs (inputs that are actively quoted and can be validated to external sources). The fair values are netted by counterparty, including cash collateral received from or delivered to the counterparty, where an offset right exists. If these netted amounts are positive, they are classified as an asset, and if negative, they are classified as a liability. We enter into master-netting agreements for interest-rate-exchange agreements with institutions that have long-term senior unsecured credit ratings that are at or above single-A (or equivalent) by S&P and Moody's. We maintain master-netting agreements, which include bilateral collateral agreements, to reduce our exposure to counterparty defaults. These bilateral-collateral agreements require credit exposures beyond a defined threshold amount to be secured by U.S. government or GSE-issued securities or cash. All of these factors serve to mitigate credit and nonperformance risk to us. We generally use a midmarket pricing convention based on the bid-ask spread as a practical expedient for fair-value measurements. Because these estimates are made at a specific point in time, they are susceptible to material near-term changes. We have evaluated the potential for the fair value of the instruments to be affected by counterparty risk and our own credit risk and have determined that no adjustments were significant to the overall fair-value measurements.

Derivative Assets/Liabilities – Commitments to Invest in Mortgage Loans.Commitments to invest in mortgage loans are recorded as derivatives in the statement of condition. The fair values of such commitments are based on the end-of-day delivery commitment prices provided by the FHLBank of Chicago and a spread, which are derived from MBS to-be-announced delivery commitment prices with adjustment for the contractual features of the MPF program, such as servicing and credit-enhancement features.

Deposits. We determine the fair values of term deposits by calculating the present value of expected future cash flows from the deposits and reducing this amount by any accrued interest payable. The discount rates used in these calculations are the costs of currently issued deposits with similar terms.

COs. We estimate fair values based on the cost of issuing comparable term debt, excluding non-interest selling costs. Fair values of COs without embedded options are determined based on internal valuation models that use market-based yield curve inputs obtained from the Office of Finance (the FHLBanks' agent that issues and services COs). Fair values of COs with embedded options are determined by internal valuation models with market-based inputs obtained from the Office of Finance and derivative dealers. Our internal valuation models use standard valuation techniques and estimate fair values based on the following inputs.

• CO Curve. The Office of Finance constructs an internal yield curve, referred to as the CO curve, using the U.S. Treasury curve as a base yield curve that is then adjusted by adding indicative spreads obtained from market observable sources. These market indications are generally derived from pricing indications from dealers, historical pricing relationships, recent GSE debt trades, and secondary market activity.

• Volatility Assumption. To estimate the fair values of consolidated obligations with optionality, we use market-based expectations of future interest-rate volatility implied from current market prices for similar options.

Mandatorily Redeemable Capital Stock. The fair value of capital stock subject to mandatory redemption is generally equal to its par as indicated by contemporaneous member purchases and sales at par value. Fair value also includes an estimated dividend earned at the time of reclassification from equity to liabilities, until such amount is paid, and any subsequently declared dividend. Capital stock can only be acquired by our members at par value and redeemed at par value. Our capital stock is not traded and no market mechanism exists for the exchange of capital stock outside of our cooperative structure.

Commitments. The fair value of our standby bond-purchase agreements is based on the present value of the estimated fees we receive for providing these agreements discounted at yields comparable to those of the related bonds, taking into account the remaining terms of such agreements. For fixed-rate advance commitments, fair value also considers the difference between current levels of interest rates and the committed rates.

Subjectivity of Estimates. Estimates of the fair value of financial assets and liabilities using the methodologies 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. Since these estimates are made as of a specific point in time, they are susceptible to material near-term changes.

Fair Value Measured on a Recurring Basis.

The following tables present our assets and liabilities that are measured at fair value on the statement of condition, which are recorded on a recurring basis at September 30, 2012, and December 31, 2011, by fair-value hierarchy level (dollars in thousands):

	September 30, 2012
	Level 1		Level 2			Level 3		Netting Adjustment (1)			Total
Assets:
Trading securities:
U.S. government-guaranteed – residential MBS	$	—	$	17,496		$	—	$	—		$	17,496
GSEs – residential MBS	—		5,380			—		—			5,380
GSEs – commercial MBS	—		256,544			—		—			256,544
Total trading securities	—		279,420			—		—			279,420
Available-for-sale securities:
Supranational institutions	—		473,416			—		—			473,416
Corporate bonds (2)	—		308,225			—		—			308,225
U.S. government-owned corporations	—		293,600			—		—			293,600
GSEs	—		2,148,466			—		—			2,148,466
U.S. government guaranteed – residential MBS	—		76,957			—		—			76,957
GSEs – residential MBS	—		2,361,517			—		—			2,361,517
GSEs – commercial MBS	—		101,915			—		—			101,915
Total available-for-sale securities	—		5,764,096			—		—			5,764,096
Derivative assets:
Interest-rate-exchange agreements	—		116,054			—		(115,610		)	444
Mortgage delivery commitments	—		85			—		—			85
Total derivative assets	—		116,139			—		(115,610		)	529
Total assets at fair value	$	—	$	6,159,655		$	—	$	(115,610	)	$	6,044,045
Liabilities:
Derivative liabilities
Interest-rate-exchange agreements	$	—	$	(1,064,887	)	$	—	$	115,280		$	(949,607	)
Mortgage delivery commitments	—		(128		)	—		—			(128		)
Total liabilities at fair value	$	—	$	(1,065,015	)	$	—	$	115,280		$	(949,735	)

_______________________

(1)These amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparty. Net cash collateral associated with derivatives, including accrued interest, as of September 30, 2012, totaled $330,000.

(2) These securities are corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. Government.

	December 31, 2011
	Level 1		Level 2			Level 3		Netting Adjustment (1)			Total
Assets:
Trading securities:
U.S. government-guaranteed – residential MBS	$	—	$	18,880		$	—	$	—		$	18,880
GSEs – residential MBS	—		6,663			—		—			6,663
GSEs – commercial MBS	—		248,621			—		—			248,621
Total trading securities	—		274,164			—		—			274,164
Available-for-sale securities:
Supranational institutions	—		469,242			—		—			469,242
Corporate bonds (2)	—		564,312			—		—			564,312
U.S. government-owned corporations	—		284,844			—		—			284,844
GSEs	—		2,782,421			—		—			2,782,421
U.S. government guaranteed – residential MBS	—		91,228			—		—			91,228
GSEs – residential MBS	—		984,808			—		—			984,808
GSEs – commercial MBS	—		103,344			—		—			103,344
Total available-for-sale securities	—		5,280,199			—		—			5,280,199
Derivative assets:
Interest-rate-exchange agreements	—		229,877			—		(213,484		)	16,393
Mortgage delivery commitments	—		128			—		—			128
Total derivative assets	—		230,005			—		(213,484		)	16,521
Total assets at fair value	$	—	$	5,784,368		$	—	$	(213,484	)	$	5,570,884
Liabilities:
Derivative liabilities
Interest-rate-exchange agreements	$	—	$	(1,098,547	)	$	—	$	193,243		$	(905,304	)
Total liabilities at fair value	$	—	$	(1,098,547	)	$	—	$	193,243		$	(905,304	)

_______________________

(1)These amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparty. Net cash collateral associated with derivatives, including accrued interest, as of December 31, 2011, totaled $20.2 million.

(2) These securities are corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. Government.

Fair Value on a Nonrecurring Basis

We measure certain held-to-maturity investment securities and REO at fair value on a nonrecurring basis, that is, they are not measured at fair value on an ongoing basis but are subject to fair-value adjustments only in certain circumstances (for example, upon recognizing an other-than-temporary impairment on a held-to-maturity security).

The following tables present the fair value of financial assets by level within the fair-value hierarchy which are recorded on a nonrecurring basis at September 30, 2012, and December 31, 2011 (dollars in thousands).

	September 30, 2012
	Level 1		Level 2		Level 3		Total
Held-to-maturity securities:
Private-label residential MBS	$	—	$	—	$	19,403	$	19,403
REO	—		—		356		356
Total assets recorded at fair value on a nonrecurring basis	$	—	$	—	$	19,759	$	19,759

	December 31, 2011
	Level 1		Level 2		Level 3		Total
Held-to-maturity securities:
Private-label residential MBS	$	—	$	—	$	148,952	$	148,952
REO	—		—		905		905
Total assets recorded at fair value on a nonrecurring basis	$	—	$	—	$	149,857	$	149,857

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Allowance for Credit Losses (Narratives)(Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012 Contracts	Sep. 30, 2011	Sep. 30, 2012 Contracts	Sep. 30, 2011	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Amount of first-loss account remaining for losses attributable to us	$ 20,800,000		$ 20,800,000		$ 23,800,000
Credit enhancement fees	782,000	762,000	2,300,000	2,300,000
Troubled Debt Restructuring [Abstract]
Maximum period of monthly payment modification			36 months
Monthly payment to housing expense ratio	31.00%		31.00%
Maximum modified term of principal and interest payments			36 months
Troubled debt restructuring loan modification for principal and interest payment term, maximum			40 years
Incremental interest decrease, percent			0.125%
Floor rate			3.00%
Number of troubled debt restructurings	4		10
Pre-modification recorded investment in the troubled debt restructurings	734,000		2,000,000
Post-modification recorded investment in the troubled debt restructurings	715,000		1,900,000
Recorded investment of trouble debt restructuring	2,300,000		2,300,000		446,000
REO	7,900,000		7,900,000		6,300,000
Carrying amount of REO sold			8,200,000	7,500,000
Net gain on sale of REO assets			$ 308,000	$ 400,000

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Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
OPERATING ACTIVITIES
Net income	$ 153,608	$ 94,885
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	(13,299)	(2,779)
Reduction of provision for credit losses	(2,057)	(1,458)
Change in net fair-value adjustments on derivatives and hedging activities	85,822	62,316
Net other-than-temporary impairment losses on investment securities, credit portion	5,544	73,588
Loss on early extinguishment of debt	16,993	0
Realized net gain from sale of available-for-sale securities	0	(12,801)
Other adjustments	(312)	(400)
Net change in:
Market value of trading securities	(8,291)	(17,594)
Accrued interest receivable	20,567	34,883
Other assets	2,150	2,114
Accrued interest payable	18,181	1,929
Other liabilities	12,393	17,620
Total adjustments	137,691	157,418
Net cash provided by operating activities	291,299	252,303
INVESTING ACTIVITIES
Interest-bearing deposits	(84)	(74)
Securities purchased under agreements to resell	1,775,000	(1,325,000)
Federal funds sold	1,170,000	2,205,000
Premises, software, and equipment	(784)	(2,168)
Trading securities:
Net decrease in short-term	0	5,320,000
Proceeds from long-term	3,035	3,433
Available-for-sale securities:
Proceeds from long-term	1,128,619	2,510,471
Purchases of long-term	(1,615,479)	(492,011)
Held-to-maturity securities:
Proceeds from long-term	1,016,930	1,046,077
Purchases of long-term	0	(1,814,412)
Advances to members:
Proceeds	110,843,079	101,596,921
Disbursements	(109,610,045)	(98,566,753)
Mortgage loans held for portfolio:
Proceeds	610,854	459,510
Purchases	(947,759)	(352,182)
Proceeds from sale of foreclosed assets	7,904	8,721
Net cash provided by investing activities	4,381,270	10,597,533
FINANCING ACTIVITIES
Net change in deposits	12,079	4,686
Net payments on derivatives contracts with a financing element	(27,101)	(29,768)
Net proceeds from issuance of consolidated obligations:
Discount notes	101,912,981	439,183,592
Bonds	7,879,848	11,234,003
Bonds transferred from other FHLBanks	130,276	0
Payments for maturing and retiring consolidated obligations:
Discount notes	(104,572,190)	(447,033,139)
Bonds	(9,597,021)	(13,925,150)
Proceeds from issuance of capital stock	46,094	60,145
Payments for redemption of mandatorily redeemable capital stock	(12,580)	(3,469)
Payments for repurchase of capital stock	(237,412)	0
Cash dividends paid	(13,471)	(7,980)
Net cash used in financing activities	(4,478,497)	(10,517,080)
Net increase in cash and due from banks	194,072	332,756
Cash and due from banks at beginning of the year	112,094	6,151	6,151
Cash and due from banks at period end	306,166	338,907	112,094
Supplemental disclosures:
Interest paid	357,257	391,404
AHP payments	4,313	4,707	5,775
REFCorp assessments refunded, net	0	(2,512)
Noncash transfers of mortgage loans held for investment to real estate owned (REO)	$ 10,435	$ 8,533

XML

Statements of Condition (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]
Available-for-sale securities pledged as collateral that may be repledged	$ 8,313	$ 119,118
Held-to-maturity securities pledged as collateral that may be repledged	105,687	128,073
Allowance for credit losses	5,514	7,800
Common Stock, Class B, putable shares issued	34,330	36,253
Common Stock, Class B, putable, par value per share	$ 100	$ 100
Common Stock, Class B, putable shares outstanding	34,330	36,253
Fair value of held-to-maturity securities	$ 5,915,270	$ 6,663,066

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Derivatives and Hedging Activities

9 Months Ended

Sep. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging Activities [Text Block]

Derivatives and Hedging Activities

All derivatives are recognized on the statement of condition at fair value. We offset fair-value amounts recognized for derivative instruments and fair-value amounts recognized for the right to reclaim cash collateral (a receivable) or the obligation to return cash collateral (a payable) arising from derivative instruments recognized at fair value executed with the same counterparty under a master-netting arrangement. Derivative assets and derivative liabilities reported on the statement of condition also include net accrued interest. Cash flows associated with derivatives are reflected as cash flows from operating activities in the statement of cash flows unless the derivative meets the criteria to be a financing derivative.

Each derivative is designated as one of the following:

• a qualifying hedge of the change in fair value of a recognized asset or liability or an unrecognized firm commitment (a fair value hedge);

• a qualifying hedge of a forecasted transaction or the variability of cash flows that are to be received or paid in connection with a recognized asset or liability (a cash-flow hedge); or

• a nonqualifying hedge of an asset or liability (an economic hedge) for asset-liability-management purposes.

Accounting for Fair-Value or Cash-Flow Hedges. If hedging relationships meet certain criteria, including, but not limited to, formal documentation of the hedging relationship and an expectation to be highly effective, they qualify for fair-value or cash-flow hedge accounting and the offsetting changes in fair value of the hedged items are recorded either in earnings in the case of fair-value hedges or accumulated other comprehensive loss in the case of cash-flow hedges. Our approaches to hedge accounting are:

• long-haul hedge accounting, which generally requires us to formally assess (both at the hedge's inception and at least quarterly) whether the derivatives that are used in hedging transactions have been effective in offsetting changes in the fair value or cash flows of hedged items or forecasted transactions and whether those derivatives may be expected to remain effective in future periods; and 

• short-cut hedge accounting, which can be used for transactions for which the assumption can be made that the change in fair value of a hedged item, due to changes in the benchmark rate, exactly offsets the change in fair value of the related derivative. Under the short-cut method, the entire change in fair value of the interest-rate swap is considered to be effective at achieving offsetting changes in fair values or cash flows of the hedged asset or liability.

Derivatives that are used in fair-value hedges are typically executed at the same time as the hedged items, and we designate the hedged item in a qualifying hedge relationship as of the trade date. In many hedging relationships that use the short-cut method, we may designate the hedging relationship upon our commitment to disburse an advance or trade a consolidated obligation (CO) that settles within the shortest period of time possible for the type of instrument based on market-settlement conventions. In such circumstances, although the advance or CO will not be recognized in the financial statements until settlement date, the hedge meets the criteria for applying the short-cut method, provided all other short-cut criteria are also met. We then record the changes in fair value of the derivative and the hedged item beginning on the trade date.

Changes in the fair value of a derivative that is designated and qualifies as a fair-value hedge, along with changes in the fair value of the hedged asset or liability that are attributable to the hedged risk (including changes that reflect losses or gains on firm commitments), are recorded in other income (loss) as net (losses) gains on derivatives and hedging activities.

Changes in the fair value of a derivative that is designated and qualifies as a cash-flow hedge, to the extent that the hedge is effective, are recorded in accumulated other comprehensive loss, a component of capital, until earnings are affected by the variability of the cash flows of the hedged transaction.

For both fair-value and cash-flow hedges, any hedge ineffectiveness (which represents the amount by which the changes in the fair value of the derivative differ from the change in the fair value of the hedged item or the variability in the cash flows of the forecasted transaction) is recorded in other income (loss) as net (losses) gains on derivatives and hedging activities.

Accounting for Economic Hedges. An economic hedge is defined as a derivative hedging specific or nonspecific assets, liabilities, or firm commitments that does not qualify or was not designated for fair-value or cash-flow hedge accounting, but is an acceptable hedging strategy under our risk-management policy. These economic hedging strategies also comply with Finance Agency regulatory requirements prohibiting speculative derivative transactions. An economic hedge by definition introduces the potential for earnings variability caused by the changes in fair value of the derivatives that are recorded in income but not offset by corresponding changes in the fair value of the economically hedged assets, liabilities, or firm commitments. As a result, we recognize only the net interest and the change in fair value of these derivatives in other income (loss) as net (losses) gains on derivatives and hedging activities with no offsetting fair-value adjustments for the economically hedged assets, liabilities, or firm commitments.

Accrued Interest Receivable and Payable. The differential between accrual of interest receivable and payable on derivatives designated as a fair-value hedge or as a cash-flow hedge is recognized through adjustments to the interest income or interest expense of the designated hedged investment securities, advances, COs, deposits, or other financial instruments. The differential between accrual of interest receivable and payable on economic hedges is recognized in other income (loss), along with changes in fair value of these derivatives, as net (losses) gains on derivatives and hedging activities.

Discontinuance of Hedge Accounting. We may discontinue hedge accounting prospectively when:

• we determine that the derivative is no longer effective in offsetting changes in the fair value or cash flows of a hedged item (including hedged items such as firm commitments or forecasted transactions);

• the derivative and/or the hedged item expires or is sold, terminated, or exercised;

• it is no longer probable that the forecasted transaction will occur in the originally expected period;

• a hedged firm commitment no longer meets the definition of a firm commitment; or

• we determine that designating the derivative as a hedging instrument is no longer appropriate.

When hedge accounting is discontinued because we determine that the derivative no longer qualifies as an effective fair-value hedge of an existing hedged item, we either terminate the derivative or continue to carry the derivative on the statement of condition at its fair value and cease to adjust the hedged asset or liability for changes in fair value, and begin to amortize the cumulative basis adjustment on the hedged item into earnings over the remaining life of the hedged item using the level-yield method.

When hedge accounting is discontinued because we determine that the derivative no longer qualifies as an effective cash-flow hedge of an existing hedged item, we continue to carry the derivative on the statement of condition at its fair value and amortize the cumulative other comprehensive loss adjustment to earnings when earnings are affected by the existing hedged item.

If it is no longer probable that a forecasted transaction will occur by the end of the originally expected period or within two months thereafter, we immediately recognize the gain or loss that was in accumulated other comprehensive loss in earnings. In rare cases we may discontinue cash-flow hedge accounting, but the existence of extenuating circumstances related to the nature of the forecasted transaction and that are outside of our control or influence may make it probable that the forecasted transaction occurs in the future, on a date that is beyond the additional two-month period of time. In such cases, the gain or loss on the derivative remains in accumulated other comprehensive loss and is recognized in earnings when the forecasted transaction occurs.

When hedge accounting is discontinued because the hedged item no longer meets the definition of a firm commitment, we continue to carry the derivative on the statement of condition at its fair value, removing from the statement of condition any asset or liability that was recorded to recognize the firm commitment and recording it as a gain or loss in current period earnings.

Embedded Derivatives. We may issue debt, make advances, or purchase financial instruments in which a derivative instrument is embedded. Upon execution of these transactions, we assess whether the economic characteristics of the embedded derivative are clearly and closely related to the economic characteristics of the remaining component of the advance, debt, deposit, or other financial instrument (the host contract) and whether a separate, nonembedded instrument with the same terms as the embedded instrument would meet the definition of a derivative instrument. When we determine that (1) the embedded derivative has economic characteristics that are not clearly and closely related to the economic characteristics of the host contract and (2) a separate, stand-alone instrument with the same terms would qualify as a derivative instrument, the embedded derivative is separated from the host contract, carried at fair value, and designated as a stand-alone derivative instrument. If the entire contract (the host contract and the embedded derivative) is to be measured at fair value, with changes in fair value reported in current earnings (for example, an investment security classified as trading, as well as hybrid financial instruments) or if we cannot reliably identify and measure the embedded derivative for purposes of separating that derivative from its host contract, the entire contract is carried on the statement of condition at fair value and no portion of the contract is designated as a hedging instrument. At September 30, 2012, the Bank had certain advances with embedded features that met the requirement to be separated from the host contract and designate the embedded features as a stand-alone derivative. The value of the embedded derivatives is included in total advances on the Statement of Condition. See Note 7 — Advances for the fair value of the embedded derivatives. 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 as of December 31, 2011.

Financial Statement Impact and Additional Financial Information. The notional amount of derivatives is a factor in determining periodic interest payments or cash flows received and paid. However, the notional amount of derivatives represents neither the actual amounts exchanged nor our overall exposure to credit and market risk. The risks of derivatives can be measured meaningfully on a portfolio basis that takes into account the derivatives, the item being hedged, and any offsets between the two.

The following table presents the fair value of derivative instruments as of September 30, 2012 (dollars in thousands):

	Notional Amount of Derivatives		Derivative Assets			Derivative Liabilities
Derivatives designated as hedging instruments
Interest-rate swaps	$	14,840,400	$	115,475		$	(964,100	)
Interest-rate futures / forwards	1,250,000		—			(64,855		)
Total derivatives designated as hedging instruments	16,090,400		115,475			(1,028,955		)
Derivatives not designated as hedging instruments
Interest-rate swaps	1,165,250		537			(35,932		)
Interest-rate caps or floors	300,000		42			—
Mortgage-delivery commitments (1)	41,506		85			(128		)
Total derivatives not designated as hedging instruments	1,506,756		664			(36,060		)
Total notional amount of derivatives	$	17,597,156
Total derivatives before netting and collateral adjustments			116,139			(1,065,015		)
Netting adjustments (2)			(115,280		)	115,280
Cash collateral received from counterparties, including accrued interest			(330		)	—
Derivative assets and derivative liabilities			$	529		$	(949,735	)

_______________________

(1)Mortgage-delivery commitments are classified as derivatives with changes in fair value recorded in other income.

(2)Amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions.

The following table presents the fair value of derivative instruments as of December 31, 2011 (dollars in thousands):

	Notional Amount of Derivatives		Derivative Assets			Derivative Liabilities
Derivatives designated as hedging instruments
Interest-rate swaps	$	19,326,022	$	229,091		$	(1,036,060	)
Interest-rate futures / forwards	700,000		—			(31,981		)
Total derivatives designated as hedging instruments	20,026,022		229,091			(1,068,041		)
Derivatives not designated as hedging instruments
Interest-rate swaps	235,750		—			(30,506		)
Interest-rate caps or floors	300,000		786			—
Mortgage-delivery commitments (1)	17,734		128			—
Total derivatives not designated as hedging instruments	553,484		914			(30,506		)
Total notional amount of derivatives	$	20,579,506
Total derivatives before netting and collateral adjustments			230,005			(1,098,547		)
Netting adjustments (2)			(193,438		)	193,438
Cash collateral received from counterparties, including accrued interest			(20,046		)	(195		)
Derivative assets and derivative liabilities			$	16,521		$	(905,304	)

_______________________

(1)Mortgage-delivery commitments are classified as derivatives with changes in fair value recorded in other income.

(2)Amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions.

Net (losses) gains on derivatives and hedging activities recorded in Other Income (Loss) for the three and nine months endedSeptember 30, 2012, and 2011, were as follows (dollars in thousands).

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Derivatives and hedged items in fair-value hedging relationships:
Interest-rate swaps	$	597		$	445		$	255		$	1,846
Derivatives not designated as hedging instruments:
Economic hedges:
Interest-rate swaps	(3,243		)	(17,952		)	(10,105		)	(24,674		)
Interest-rate caps or floors	(207		)	(1,147		)	(745		)	(2,298		)
Mortgage-delivery commitments	767			1,180			2,086			1,599
Total net losses related to derivatives not designated as hedging instruments	(2,683		)	(17,919		)	(8,764		)	(25,373		)
Net losses on derivatives and hedging activities	$	(2,086	)	$	(17,474	)	$	(8,509	)	$	(23,527	)

The following tables present, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair-value hedge relationships and the impact of those derivatives on our net interest income for the three and nine months endedSeptember 30, 2012, and 2011 (dollars in thousands):

	For the Three Months Ended September 30, 2012
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	1,375		$	(1,116	)	$	259		$	(45,869	)
Investments	7,645			(7,183		)	462			(10,256		)
Deposits	(293		)	293			—			385
COs – bonds	(6,947		)	6,823			(124		)	21,003
	$	1,780		$	(1,183	)	$	597		$	(34,737	)
	For the Three Months Ended September 30, 2011
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	(68,999	)	$	68,954		$	(45	)	$	(68,212	)
Investments	(146,239		)	145,812			(427		)	(11,751		)
Deposits	(23		)	23			—			396
COs – bonds	28,819			(27,902		)	917			37,594
	$	(186,442	)	$	186,887		$	445		$	(41,973	)

_______________________

(1)  The net interest on derivatives in fair-value hedge relationships is presented in the interest income or interest expense of the respective hedged item in the statement of operations.

	For the Nine Months Ended September 30, 2012
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	55,505		$	(56,798	)	$	(1,293	)	$	(149,548	)
Investments	(5,066		)	6,321			1,255			(30,626		)
Deposits	(908		)	908			—			1,151
COs – bonds	(109,114		)	109,407			293			68,893
	$	(59,583	)	$	59,838		$	255		$	(110,130	)
	For the Nine Months Ended September 30, 2011
	Gain/(Loss) on Derivative			Gain/(Loss) on Hedged Item			Net Fair-Value Hedge Ineffectiveness			Effect of Derivatives on Net Interest Income (1)
Hedged Item:
Advances	$	(20,049	)	$	20,472		$	423		$	(218,021	)
Investments	(145,876		)	146,158			282			(35,973		)
Deposits	(381		)	381			—			1,183
COs – bonds	29,952			(28,811		)	1,141			122,699
	$	(136,354	)	$	138,200		$	1,846		$	(130,112	)

______________

(1)  The net interest on derivatives in fair-value hedge relationships is presented in the interest income or interest expense of the respective hedged item in the statement of operations.

The loss recognized in other comprehensive income for hedged items in cash-flow hedging relationships was$10.4 million and $25.2 million for the three months ended September 30, 2012, and 2011, respectively.

The loss recognized in other comprehensive income for hedged items in cash-flow hedging relationships was$32.9 million and $26.8 million for the nine months endedSeptember 30, 2012, and 2011, respectively.

For the nine months endedSeptember 30, 2012, there were no reclassifications from accumulated other comprehensive loss into earnings as a result of the discontinuance of cash-flow hedges because the original forecasted transactions were not expected to occur by the end of the originally specified time period or within a two-month period thereafter. The maximum length of time over which we are hedging our exposure to the variability in future cash flows for forecasted transactions is six years.

Managing Credit Risk on Derivatives. We are subject to credit risk on our hedging activities due to the risk of nonperformance by counterparties to the derivative agreements. The amount of potential counterparty risk depends on the extent to which master-netting arrangements are included in such contracts to mitigate the risk. We try to limit counterparty credit risk through our ongoing monitoring of counterparty creditworthiness and adherence to the requirements set forth in our policies and Finance Agency regulations. We require collateral agreements in connection with our derivatives transactions. These collateral agreements include collateral delivery thresholds. All counterparties must execute master-netting agreements prior to entering into any interest-rate-exchange agreement with us. These master-netting agreements contain bilateral-collateral exchange agreements that require that credit exposure beyond a defined threshold amount be secured by readily marketable, U.S. Treasury or GSE securities, or cash. The level of these collateral threshold amounts varies according to the counterparty's Standard & Poor's Ratings Services (S&P) or Moody's Investors Service (Moody's) long-term credit ratings. Credit exposures are then measured daily and adjustments to collateral positions are made in accordance with the terms of the master-netting agreements. These master-netting agreements also contain bilateral ratings-tied termination events permitting us to terminate all outstanding agreements with a counterparty in the event of a specified rating downgrade by Moody's or S&P. Based on credit analyses and collateral requirements, we do not anticipate any credit losses on our derivative agreements.

The table below presents credit-risk exposure on derivative instruments, excluding the amount of excess cash collateral received from counterparties in instances where a counterparty's pledged cash collateral to us exceeds our net position (dollars in thousands).

	September 30, 2012			December 31, 2011
Total net exposure at fair value(1)	$	859		$	36,567
Less: cash collateral received from counterparties, including accrued interest	(330		)	(20,046		)
Net exposure after cash collateral	$	529		$	16,521

_______________________

(1)  Includes net accrued interest receivable of $1.7 million and $988,000 at September 30, 2012, and December 31, 2011, respectively.

Certain of our master-netting agreements contain provisions that require us to post additional collateral with our counterparties if there is deterioration in our credit ratings. Under the terms that govern such agreements, if our credit rating is lowered by Moody's or S&P to a certain level, we are required to deliver additional collateral on derivative instruments in a net liability position. In the event of a split among such credit ratings, the lower ratings govern. The aggregate fair value of all derivative instruments with these provisions that were in a net-liability position (before cash collateral and related accrued interest) at September 30, 2012, was $949.6 million for which we had delivered collateral with a post-haircut value of $800.9 million in accordance with the terms of the master-netting agreements. The following table sets forth the post-haircut value of incremental collateral that certain swap counterparties could have required us to deliver based on incremental credit rating downgrades at September 30, 2012 (dollars in thousands).

Post-haircut Value of Incremental Collateral to be Delivered  as of September 30, 2012
Ratings Downgrade (1)
From	To	Incremental Collateral(2)
AA+	AA or AA-	$	39,664
AA-	A+, A or A-	79,106
A-	below A-	14,000

_______________________

(1) Ratings are expressed in this table according to S&P's conventions but include the equivalent of such rating by Moody's and they represent the lower of our S&P and Moody's ratings.

(2) Additional collateral of $15.9 million could be called by counterparties as of September 30, 2012, at our current credit rating of AA+ (based on the lower of our credit ratings from S&P and Moody's) and is not included in the table.

We execute derivatives with nonmember counterparties with long-term ratings of single-A (or equivalent) or better by S&P, Moody's, and Fitch, Inc. (Fitch) at the time of the transaction, although risk-reducing trades are permitted for counterparties whose ratings have fallen below these ratings. Some of these counterparties or their affiliates buy, sell, and distribute COs. See Note 12 — Consolidated Obligations for additional information. See also Note 18 — Commitments and Contingencies for a discussion of assets we have pledged to these counterparties. We are not a derivatives dealer and do not trade derivatives for short-term profit.

XML

Document and Entity Information	9 Months Ended
	Sep. 30, 2012	Oct. 31, 2012 Common Class A [Member]	Oct. 31, 2012 Common Class B [Member]
Entity Information [Line Items]
Document Type	10-Q
Document Period End Date	Sep. 30, 2012
Amendment Flag	false
Entity Registrant Name	Federal Home Loan Bank of Boston
Entity Central Index Key	0001331463
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Entity Common Stock, Shares Outstanding		0	36,542,526
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

XML

Deposits

9 Months Ended

Sep. 30, 2012

Deposits [Abstract]

Deposits [Text Block]

Deposits

We offer demand and overnight deposits for members and qualifying nonmembers. In addition, we offer short-term interest-bearing deposit programs to members. Members that service mortgage loans may deposit funds collected in connection with mortgage loans pending disbursement of such funds to the owners of the mortgage loans. We classify these items as "other" in the following table.

Deposits at September 30, 2012, and December 31, 2011, include hedging adjustments of $3.1 million and $4.0 million, respectively.

The following table details interest-bearing and non-interest-bearing deposits (dollars in thousands):

	September 30, 2012		December 31, 2011
Interest bearing
Demand and overnight	$	623,302	$	600,155
Term	21,894		22,401
Other	3,585		4,571
Non-interest bearing
Other	36,547		27,119
Total deposits	$	685,328	$	654,246

The aggregate amount of time deposits with a denomination of $100,000 or more was $20.0 million as of September 30, 2012, and December 31, 2011.

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Capital (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Capital [Line Items]
Multiplier for Determining Permanent Capital in Leverage Capital Calculation	1.5
Class B capital stock	$ 3,433,016,000	$ 3,625,348,000
Mandatorily redeemable capital stock	215,863,000	227,429,000
Retained earnings	538,234,000	398,097,000
Total permanent capital	4,187,113,000	4,250,874,000
Credit-risk capital	494,777,000	582,879,000
Market-risk capital	71,865,000	91,337,000
Operations-risk capital	169,993,000	202,265,000
Risk-based capital required	736,635,000	876,481,000
Excess of risk-based capital requirement	3,450,478,000	3,374,393,000
Regulatory Capital, Required	1,829,701,000	1,998,733,000
Capital-to-asset ratio required	4.00%	4.00%
Leverage capital required	2,287,127,000	2,498,417,000
Leverage capital-to-assets ratio required	5.00%	5.00%
Actual risk-based capital	4,187,113,000	4,250,874,000
Actual regulatory capital	4,187,113,000	4,250,874,000
Actual capital-to-asset ratio	9.20%	8.50%
Actual leverage capital	6,280,670,000	6,376,311,000
Actual leverage capital-to-assets ratio	13.70%	12.80%
Contribution requirement - Restricted Retained Earnings	417,800,000
Restricted retained earnings	$ 53,660,000	$ 22,939,000
FHLBanks [Member]
Capital [Line Items]
Quarterly percentage of net income contributed to restricted retained earnings	20.00%
Percent of FHLBank's average balance of outstanding COs required	1.00%

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Subsequent Events (Details) (USD $) In Millions, unless otherwise specified		0 Months Ended
	Oct. 18, 2012 Dividend Declared [Member]	Nov. 02, 2012 Dividend Paid [Member]
Subsequent Event [Line Items]
Annualized rate of cash dividend	0.48%
Dividend, including dividends on mandatorily redeemable capital stock		$ 4.4

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Statements of Operations (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
INTEREST INCOME
Advances	$ 72,551	$ 80,163	$ 225,037	$ 249,670
Prepayment fees on advances, net	11,874	9,066	44,348	20,393
Securities purchased under agreements to resell	2,455	502	7,069	1,447
Federal funds sold	463	2,211	1,491	5,969
Trading securities	2,522	3,034	7,608	13,270
Available-for-sale securities	19,106	15,374	50,869	49,425
Held-to-maturity securities	35,057	42,647	111,445	123,476
Prepayment fees on investments	139	806	341	1,355
Mortgage loans held for portfolio	34,214	37,267	103,527	113,456
Other	2	1	3	2
Total interest income	178,383	191,071	551,738	578,463
INTEREST EXPENSE
Consolidated obligations - bonds	101,584	108,896	311,943	345,012
Consolidated obligations - discount notes	3,726	1,546	8,222	8,808
Deposits	11	42	42	244
Mandatorily redeemable capital stock	260	177	834	446
Other borrowings	1	0	2	3
Total interest expense	105,582	110,661	321,043	354,513
NET INTEREST INCOME	72,801	80,410	230,695	223,950
Reduction of provision for credit losses	(523)	0	(2,057)	(1,458)
NET INTEREST INCOME AFTER REDUCTION OF PROVISION FOR CREDIT LOSSES	73,324	80,410	232,752	225,408
OTHER INCOME (LOSS)
Total other-than-temporary impairment losses on investment securities	(2,077)	(8,336)	(14,218)	(31,982)
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	985	1,126	8,674	(41,606)
Net other-than-temporary impairment losses on investment securities, credit portion	(1,092)	(7,210)	(5,544)	(73,588)
Loss on early extinguishment of debt	(4,992)	0	(16,993)	0
Service fees	1,483	2,046	4,474	6,503
Net unrealized gains on trading securities	4,669	13,638	8,291	17,594
Net losses on derivatives and hedging activities	(2,086)	(17,474)	(8,509)	(23,527)
Realized net gain from sale of available-for-sale securities	0	0	0	12,801
Other	228	131	2,753	469
Total other loss	(1,790)	(8,869)	(15,528)	(59,748)
OTHER EXPENSE
Compensation and benefits	8,405	8,111	25,723	24,366
Other operating expenses	4,380	5,656	13,442	14,974
Federal Housing Finance Agency	1,073	1,162	3,472	3,622
Office of Finance	625	665	2,066	2,156
Other	556	388	1,753	3,987
Total other expense	15,039	15,982	46,456	49,105
INCOME BEFORE ASSESSMENTS	56,495	55,559	170,768	116,555
AHP	5,675	5,573	17,160	10,592
Resolution Funding Corporation (REFCorp)	0	0	0	11,078
Total assessments	5,675	5,573	17,160	21,670
NET INCOME	$ 50,820	$ 49,986	$ 153,608	$ 94,885

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Held-to-Maturity Securities

9 Months Ended

Sep. 30, 2012

Held-to-maturity Securities [Abstract]

Held-to-maturity Securities Disclosure [Text Block]

Held-to-Maturity Securities

Major Security Types. Our held-to-maturity securities as of September 30, 2012, were (dollars in thousands):

	Amortized Cost		Other-Than-Temporary Impairment Recognized in Accumulated Other Comprehensive Loss			Carrying Value		Gross Unrecognized Holding Gains		Gross Unrecognized Holding Losses			Fair Value
U.S. agency obligations	$	14,666	$	—		$	14,666	$	1,435	$	—		$	16,101
State or local housing-finance-agency obligations (HFA securities)	191,969		—			191,969		70		(28,402		)	163,637
GSEs	69,676		—			69,676		1,857		—			71,533
	276,311		—			276,311		3,362		(28,402		)	251,271
MBS
U.S. government guaranteed – residential	41,469		—			41,469		948		—			42,417
U.S. government guaranteed – commercial	463,211		—			463,211		9,021		—			472,232
GSEs – residential	2,523,565		—			2,523,565		84,931		(379		)	2,608,117
GSEs – commercial	1,016,514		—			1,016,514		92,621		—			1,109,135
Private-label – residential	1,725,069		(402,366		)	1,322,703		123,849		(47,017		)	1,399,535
Private-label – commercial	10,335		—			10,335		419		—			10,754
Asset-backed securities (ABS) backed by home equity loans	26,361		(1,173		)	25,188		509		(3,888		)	21,809
	5,806,524		(403,539		)	5,402,985		312,298		(51,284		)	5,663,999
Total	$	6,082,835	$	(403,539	)	$	5,679,296	$	315,660	$	(79,686	)	$	5,915,270

Our held-to-maturity securities as of December 31, 2011, were (dollars in thousands):

	Amortized Cost		Other-Than-Temporary Impairment Recognized in Accumulated Other Comprehensive Loss			Carrying Value		Gross Unrecognized Holding Gains		Gross Unrecognized Holding Losses			Fair Value
U.S. agency obligations	$	18,721	$	—		$	18,721	$	1,697	$	—		$	20,418
HFA securities	202,438		—			202,438		61		(34,459		)	168,040
GSEs	70,950		—			70,950		2,510		—			73,460
	292,109		—			292,109		4,268		(34,459		)	261,918
MBS
U.S. government guaranteed – residential	50,912		—			50,912		934		—			51,846
U.S. government guaranteed – commercial	483,938		—			483,938		4,685		—			488,623
GSEs – residential	3,024,212		—			3,024,212		78,548		(1,105		)	3,101,655
GSEs – commercial	1,247,688		—			1,247,688		86,252		—			1,333,940
Private-label – residential	1,969,237		(449,654		)	1,519,583		18,789		(145,285		)	1,393,087
Private-label – commercial	10,541		—			10,541		549		—			11,090
ABS backed by home equity loans	27,367		(1,342		)	26,025		128		(5,246		)	20,907
	6,813,895		(450,996		)	6,362,899		189,885		(151,636		)	6,401,148
Total	$	7,106,004	$	(450,996	)	$	6,655,008	$	194,153	$	(186,095	)	$	6,663,066

As of September 30, 2012, the amortized cost of our held-to-maturity securities included net discounts of $507.8 million. Of that amount, net premiums of $2.4 million related to non-MBS and net discounts of $510.1 million related to MBS. As of December 31, 2011, the amortized cost of our held-to-maturity securities included net discounts of $536.4 million. Of that amount, net premiums of $3.6 million related to non-MBS and net discounts of $540.0 million related to MBS.

The following table summarizes our held-to-maturity securities with unrealized losses as of September 30, 2012, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands). 

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair  Value		Unrealized Losses			Fair Value		Unrealized Losses
HFA securities	$	334	$	(1	)	$	153,689	$	(28,401	)	$	154,023	$	(28,402	)
MBS
GSEs – residential	30,146		(46		)	65,930		(333		)	96,076		(379		)
Private-label – residential	—		—			1,364,825		(330,538		)	1,364,825		(330,538		)
ABS backed by home equity loans	—		—			21,118		(4,593		)	21,118		(4,593		)
	30,146		(46		)	1,451,873		(335,464		)	1,482,019		(335,510		)
Total	$	30,480	$	(47	)	$	1,605,562	$	(363,865	)	$	1,636,042	$	(363,912	)

The following table summarizes our held-to-maturity securities with unrealized losses as of December 31, 2011, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands). 

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair  Value		Unrealized Losses			Fair Value		Unrealized Losses
HFA securities	$	418	$	(2	)	$	150,968	$	(34,457	)	$	151,386	$	(34,459	)
MBS
GSEs – residential	239,995		(558		)	41,723		(547		)	281,718		(1,105		)
Private-label – residential	18,922		(4,138		)	1,369,550		(572,326		)	1,388,472		(576,464		)
ABS backed by home equity loans	—		—			20,906		(6,463		)	20,906		(6,463		)
	258,917		(4,696		)	1,432,179		(579,336		)	1,691,096		(584,032		)
Total	$	259,335	$	(4,698	)	$	1,583,147	$	(613,793	)	$	1,842,482	$	(618,491	)

Redemption Terms. The amortized cost and fair value of our held-to-maturity securities by contractual maturity at September 30, 2012, and December 31, 2011, are shown below (dollars in thousands). Expected maturities of some securities and MBS may differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay their obligations with or without call or prepayment fees.

	September 30, 2012						December 31, 2011
Year of Maturity	Amortized Cost		Carrying Value (1)		Fair Value		Amortized Cost		Carrying Value (1)		Fair Value
Due in one year or less	$	—	$	—	$	—	$	1,360	$	1,360	$	1,369
Due after one year through five years	70,010		70,010		71,868		71,370		71,370		73,878
Due after five years through 10 years	34,351		34,351		35,436		38,405		38,405		39,733
Due after 10 years	171,950		171,950		143,967		180,974		180,974		146,938
	276,311		276,311		251,271		292,109		292,109		261,918
MBS (2)	5,806,524		5,402,985		5,663,999		6,813,895		6,362,899		6,401,148
Total	$	6,082,835	$	5,679,296	$	5,915,270	$	7,106,004	$	6,655,008	$	6,663,066

_______________________

(1)Carrying value of held-to-maturity securities represents the sum of amortized cost and the amount of noncredit-related other-than-temporary impairment recognized in accumulated other comprehensive loss.

(2) MBS are not presented by contractual maturity because their expected maturities will likely differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay their obligations with or without call or prepayment fees.

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Available-for-Sale Securities

9 Months Ended

Sep. 30, 2012

Available-for-sale Securities [Abstract]

Available-for-Sale Securities Disclosure [Text Block]

Available-for-Sale Securities

Major Security Types. Our available-for-sale securities as of September 30, 2012, were (dollars in thousands):

			Amounts Recorded in Accumulated Other Comprehensive Loss
	Amortized Cost (1)		Unrealized Gains		Unrealized Losses			Fair  Value
Supranational institutions	$	510,971	$	—	$	(37,555	)	$	473,416
Corporate bonds (2)	307,859		366		—			308,225
U.S. government-owned corporations	339,598		—		(45,998		)	293,600
GSEs	2,132,594		33,577		(17,705		)	2,148,466
	3,291,022		33,943		(101,258		)	3,223,707
MBS
U.S. government guaranteed – residential	76,397		560		—			76,957
GSEs – residential	2,328,012		33,505		—			2,361,517
GSEs – commercial	101,582		333		—			101,915
	2,505,991		34,398		—			2,540,389
Total	$	5,797,013	$	68,341	$	(101,258	)	$	5,764,096

_______________________

(1)Amortized cost of available-for-sale securities includes adjustments made to the cost basis of an investment for accretion, amortization, collection of cash, and fair-value hedge accounting adjustments.

(2) Consists of corporate debentures guaranteed by the Federal Deposit Insurance Corporation (the FDIC) under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. government.

Our available-for-sale securities as of December 31, 2011, were (dollars in thousands):

			Amounts Recorded in Accumulated Other Comprehensive Loss
	Amortized Cost (1)		Unrealized Gains		Unrealized Losses			Fair  Value
Supranational institutions	$	504,630	$	—	$	(35,388	)	$	469,242
Corporate bonds (2)	561,942		2,370		—			564,312
U.S. government-owned corporations	338,169		—		(53,325		)	284,844
GSEs	2,750,131		52,020		(19,730		)	2,782,421
	4,154,872		54,390		(108,443		)	4,100,819
MBS
U.S. government guaranteed – residential	90,882		346		—			91,228
GSEs – residential	978,998		5,810		—			984,808
GSEs – commercial	104,007		—		(663		)	103,344
	1,173,887		6,156		(663		)	1,179,380
Total	$	5,328,759	$	60,546	$	(109,106	)	$	5,280,199

_______________________

(1)Amortized cost of available-for-sale securities includes adjustments made to the cost basis of an investment for accretion, amortization, collection of cash, and fair-value hedge accounting adjustments.

(2)Consists of corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. government.

As of September 30, 2012, the amortized cost of our available-for-sale securities included net premiums of $75.3 million. Of that amount, $57.5 million of net premiums related to non-MBS and $17.8 million of net premiums related to MBS. As of December 31, 2011, the amortized cost of our available-for-sale securities included net premiums of $77.2 million. Of that amount, $81.0 million of net premiums related to non-MBS and $3.8 million of net discounts related to MBS.

At September 30, 2012, and December 31, 2011, 22.0 percent and 25.4 percent, respectively, of our fixed-rate available-for-sale securities were swapped to a floating rate.

The following table summarizes our available-for-sale securities with unrealized losses as of September 30, 2012, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands): 

	Less than 12 Months				12 Months or More					Total
	Fair  Value		Unrealized  Losses		Fair  Value		Unrealized  Losses			Fair  Value		Unrealized  Losses
Supranational institutions	$	—	$	—	$	473,416	$	(37,555	)	$	473,416	$	(37,555	)
U.S. government-owned corporations	—		—		293,600		(45,998		)	293,600		(45,998		)
GSEs	—		—		124,026		(17,705		)	124,026		(17,705		)
Total temporarily impaired	$	—	$	—	$	891,042	$	(101,258	)	$	891,042	$	(101,258	)

The following table summarizes our available-for-sale securities with unrealized losses as of December 31, 2011, which are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position (dollars in thousands):

	Less than 12 Months				12 Months or More					Total
	Fair  Value		Unrealized  Losses		Fair  Value		Unrealized  Losses			Fair  Value		Unrealized  Losses
Supranational institutions	$	—	$	—	$	469,242	$	(35,388	)	$	469,242	$	(35,388	)
U.S. government-owned corporations	—		—		284,844		(53,325		)	284,844		(53,325		)
GSEs	—		—		121,025		(19,730		)	121,025		(19,730		)
	—		—		875,111		(108,443		)	875,111		(108,443		)
MBS
GSEs – commercial	—		—		103,344		(663		)	103,344		(663		)
Total temporarily impaired	$	—	$	—	$	978,455	$	(109,106	)	$	978,455	$	(109,106	)

Redemption Terms. The amortized cost and fair value of our available-for-sale securities by contractual maturity at September 30, 2012 and December 31, 2011, were (dollars in thousands):

	September 30, 2012				December 31, 2011
Year of Maturity	Amortized Cost		Fair  Value		Amortized Cost		Fair  Value
Due in one year or less	$	1,357,937	$	1,367,719	$	1,213,636	$	1,217,440
Due after one year through five years	940,786		964,947		1,957,683		2,008,268
Due after five years through 10 years	—		—		—		—
Due after 10 years	992,299		891,041		983,553		875,111
	3,291,022		3,223,707		4,154,872		4,100,819
MBS (1)	2,505,991		2,540,389		1,173,887		1,179,380
Total	$	5,797,013	$	5,764,096	$	5,328,759	$	5,280,199

_______________________

(1) MBS are not presented by contractual maturity because their expected maturities will likely differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay obligations with or without call or prepayment fees.

Sale of Available-for-Sale Securities. The following table shows the proceeds from sale and gross gains and losses realized on the sale of our available-for-sale securities (dollars in thousands):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
Proceeds from sale of available-for-sale securities	$	—	$	—	$	—	$	2,127,944
Gross realized gains from sale of available-for-sale securities	$	—	$	—	$	—	$	14,415
Gross realized losses from sale of available-for-sale securities	—		—		—		(1,614		)
Net realized gains from sale of available-for-sale securities	$	—	$	—	$	—	$	12,801

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Employee Retirement Plans

9 Months Ended

Sep. 30, 2012

Compensation and Retirement Disclosure [Abstract]

Employee Retirement Plans [Text Block]

Employee Retirement Plans

Qualified Defined Benefit Multiemployer Plan. We participate in the Pentegra Defined Benefit Plan for Financial Institutions (the Pentegra Defined Benefit Plan), a funded, tax-qualified, noncontributory defined-benefit pension plan. The Pentegra Defined Benefit Plan is treated as a multiemployer plan for accounting purposes, but operates as a multiple-employer plan under the Employee Retirement Income Security Act of 1974, as amended, and the Internal Revenue Code. Accordingly, certain multiemployer plan disclosures, including the certified zone status, are not applicable to the Pentegra Defined Benefit Plan. Under the Pentegra Defined Benefit Plan, contributions made by a participating employer may be used to provide benefits to employees of other participating employers since assets contributed by an employer are not segregated in a separate account or restricted to provide benefits only to employees of that employer. Also, in the event a participating employer is unable to meet its contribution requirements, the required contributions for the other participating employers could increase proportionately. The plan covers substantially all of our officers and employees. The following table shows the net pension cost charged to compensation and benefits expense (dollars in thousands).

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
Net pension cost	$	1,104	$	1,250	$	3,212	$	3,098

Qualified Defined Contribution Plan. We also participate in the Pentegra Defined Contribution Plan for Financial

Institutions, a tax-qualified defined contribution plan. The plan covers substantially all of our officers and employees. We contribute a percentage of the participants' compensation by making a matching contribution equal to a percentage of voluntary employee contributions, subject to certain limitations. Our matching contributions are charged to compensation and benefits expense.

Nonqualified Defined Contribution Plan. We also maintain the Thrift Benefit Equalization Plan, a nonqualified, unfunded deferred compensation plan covering certain of our senior officers and directors. The plan's liability consists of the accumulated compensation deferrals and the accumulated earnings on these deferrals. Our obligation from this plan, was $3.6 million and $3.2 million at September 30, 2012, and December 31, 2011, respectively. We maintain a rabbi trust intended to satisfy future benefit obligations.

The following table sets forth expenses relating to our defined contribution plans (dollars in thousands):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
Qualified Defined Contribution Plan - Pentegra Defined Contribution Plan	$	232	$	212	$	713	$	646
Nonqualified Defined Contribution Plan - Thrift Benefit Equalization Plan	11		16		80		68

Nonqualified Supplemental Defined Benefit Retirement Plan. We also maintain a nonqualified, unfunded defined-benefit plan covering certain senior officers. We maintain a rabbi trust intended to meet future benefit obligations.

Postretirement Benefits. We sponsor a fully insured postretirement benefit program that includes life insurance benefits for eligible retirees. We provide life insurance to all employees who retire on or after age 55 after completing six years of service. No contributions are required from the retirees. There are no funded plan assets that have been designated to provide postretirement benefits.

In connection with the nonqualified supplemental defined benefit retirement plan and postretirement benefits, we recorded the following amounts as of September 30, 2012, and December 31, 2011 (dollars in thousands):

	Nonqualified Supplemental Defined Benefit Retirement Plan						Postretirement Benefits
	September 30, 2012			December 31, 2011			September 30, 2012			December 31, 2011
Change in benefit obligation (1)
Benefit obligation at beginning of year	$	5,901		$	3,859		$	634		$	499
Service cost	299			261			24			25
Interest cost	209			238			21			26
Actuarial loss (gain)	860			1,543			(4		)	97
Benefits paid	(301		)	—			(13		)	(13		)
Benefit obligation at end of period	6,968			5,901			662			634
Change in plan assets
Fair value of plan assets at beginning of year	—			—			—			—
Employer contribution	301			—			13			13
Benefits paid	(301		)	—			(13		)	(13		)
Fair value of plan assets at end of period	—			—			—			—
Funded status at end of period	$	(6,968	)	$	(5,901	)	$	(662	)	$	(634	)

______________________

(1) This represents projected benefit obligation for the nonqualified supplemental defined benefit retirement plan and accumulated postretirement benefit obligation for postretirement benefits.

The following table presents the components of net periodic benefit cost and other amounts recognized in accumulated other comprehensive loss for our nonqualified supplemental defined benefit retirement plan and postretirement benefits for the three and nine months endedSeptember 30, 2012, and 2011 (dollars in thousands):

	Nonqualified Supplemental Defined Benefit Retirement Plan For the Three Months Ended September 30,				Postretirement Benefits For the Three Months Ended September 30,
	2012		2011		2012		2011
Net Periodic Benefit Cost
Service cost	$	120	$	71	$	8	$	6
Interest cost	83		64		7		7
Amortization of net actuarial loss	116		35		3		—
Net periodic benefit cost	$	319	$	170	$	18	$	13
	Nonqualified Supplemental Defined Benefit Retirement Plan For the Nine Months Ended September 30,				Postretirement Benefits For the Nine Months Ended September 30,
	2012		2011		2012		2011
Net Periodic Benefit Cost
Service cost	$	299	$	191	$	24	$	19
Interest cost	209		173		21		20
Amortization of net actuarial loss	349		106		7		1
Net periodic benefit cost	$	857	$	470	$	52	$	40

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Consolidated Obligations

9 Months Ended

Sep. 30, 2012

Debt Disclosure [Abstract]

Consolidated Obligations [Text Block]

Consolidated Obligations

COs consist of CO bonds and CO discount notes. CO bonds are issued primarily to raise intermediate- and long-term funds and are not subject to any statutory or regulatory limits on maturity. CO discount notes are issued to raise short-term funds and have original maturities of up to one year. These notes sell at less than their face amount and are redeemed at par value when they mature.

The following table sets forth the outstanding CO bonds for which we were primarily liable at September 30, 2012, and December 31, 2011, by year of contractual maturity (dollars in thousands):

	September 30, 2012					December 31, 2011
Year of Contractual Maturity	Amount			Weighted Average Rate (1)		Amount			Weighted Average Rate (1)
Due in one year or less	$	10,501,520		1.60	%	$	12,825,580		1.27	%
Due after one year through two years	6,133,520			1.49		7,196,250			2.04
Due after two years through three years	2,697,160			2.25		2,776,845			2.42
Due after three years through four years	2,771,570			2.48		1,964,000			3.20
Due after four years through five years	2,350,255			2.03		1,832,350			2.34
Thereafter	3,474,230			3.10		2,938,350			3.90
Total par value	27,928,255			1.95	%	29,533,375			2.03	%
Premiums	248,542					179,113
Discounts	(25,296		)			(29,833		)
Hedging adjustments	87,398					196,805
	$	28,238,899				$	29,879,460

_______________________

(1)The CO bonds' weighted-average rate excludes concession fees.

Our CO bonds outstanding at September 30, 2012, and December 31, 2011, included (dollars in thousands):

	September 30, 2012		December 31, 2011
Par value of CO bonds
Noncallable and non-putable	$	26,195,255	$	26,535,375
Callable	1,733,000		2,998,000
Total par value	$	27,928,255	$	29,533,375

The following is a summary of the CO Bonds for which we are primarily liable at September 30, 2012, and December 31, 2011, by year of contractual maturity or next call date for callable CO bonds (dollars in thousands):

Year of Contractual Maturity or Next Call Date	September 30, 2012		December 31, 2011
Due in one year or less	$	12,041,520	$	14,425,580
Due after one year through two years	6,196,520		7,234,250
Due after two years through three years	2,627,160		2,531,845
Due after three years through four years	2,786,570		1,849,000
Due after four years through five years	2,300,255		1,387,350
Thereafter	1,976,230		2,105,350
Total par value	$	27,928,255	$	29,533,375

The following table sets forth the CO bonds for which we were primarily liable by interest-rate-payment type at September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012		December 31, 2011
Par value of CO bonds
Fixed-rate	$	22,803,255	$	25,473,375
Simple variable-rate	4,760,000		3,350,000
Step-up	365,000		710,000
Total par value	$	27,928,255	$	29,533,375

At September 30, 2012, and December 31, 2011, 33.5 percent and 42.5 percent, respectively, of our fixed-rate CO bonds were swapped to a floating rate. At September 30, 2012, 11.6 percent of our variable-rate bonds were swapped to a different variable-rate index. We did not have any swapped variable rate bonds at December 31, 2011.

COs – Discount Notes. Outstanding CO discount notes for which we were primarily liable, all of which are due within one year, were as follows (dollars in thousands):

	Book Value		Par Value		Weighted Average Rate (1)
September 30, 2012	$	11,993,572	$	11,995,000	0.12	%
December 31, 2011	$	14,651,793	$	14,652,040	0.01	%

_______________________

(1)The CO discount notes' weighted-average rate represents a yield to maturity excluding concession fees.

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Fair Values (Valuation Techniques) (Details)	Sep. 30, 2012 vendor_prices
Fair Value Disclosures [Abstract]
Maximum number of vendor prices received for our investment securities	4
Four vendor prices received for our investment securities, percent	93.00%

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Mortgage Loans Held for Portfolio

9 Months Ended

Sep. 30, 2012

Mortgage Loans on Real Estate [Abstract]

Mortgage Loans Held for Portofolio [Text Block]

Mortgage Loans Held for Portfolio

We invest in mortgage loans through the Mortgage Partnership Finance® (MPF®) program. These investments are either guaranteed or insured by federal agencies (government mortgage loans) or are credit-enhanced by the related participating financial institution (conventional mortgage loans). All such investments are held for portfolio. The mortgage loans are typically originated, credit-enhanced, and serviced by the related participating financial institution. The majority of these loans are serviced by the originating institution. However, a portion of these loans are sold servicing-released by the participating financial institution and serviced by a third-party servicer.

The following table presents certain characteristics of the mortgage loans in which we have invested (dollars in thousands):

	September 30, 2012			December 31, 2011
Real estate
Fixed-rate 15-year single-family mortgages	$	681,720		$	646,539
Fixed-rate 20- and 30-year single-family mortgages	2,700,404			2,439,475
Premiums	55,931			35,420
Discounts	(4,415		)	(5,708		)
Deferred derivative gains and losses, net	3,408			1,297
Total mortgage loans held for portfolio	3,437,048			3,117,023
Less: allowance for credit losses	(5,514		)	(7,800		)
Total mortgage loans, net of allowance for credit losses	$	3,431,534		$	3,109,223

The following table details the par value of mortgage loans held for portfolio (dollars in thousands):

	September 30, 2012		December 31, 2011
Conventional mortgage loans	$	2,982,391	$	2,777,100
Government mortgage loans	399,733		308,914
Total par value	$	3,382,124	$	3,086,014

"Mortgage Partnership Finance," and "MPF," are registered trademarks of the FHLBank of Chicago.

See Note 9 — Allowance for Credit Losses for information related to our credit risk from our investments in mortgage loans and allowance for credit losses based on these investments.

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Other-Than-Temporary Impairment (Securities)(Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Other-than-temporary Impairment Credit Losses Recognized in Current Period [Abstract]
Par Value	$ 200,500				$ 200,500
Amortized Cost	146,739				146,739
Carrying Value	104,528				104,528
Fair Value	115,686				115,686
Other-than-temporary Impairment Credit Losses Recognized During the Life of the Security [Abstract]
Par Value	1,894,346				1,894,346
Amortized Cost	1,388,553				1,388,553
Carrying Value	985,014				985,014
Fair Value	1,105,623				1,105,623
Other Than Temporary Impaired Investment [Abstract]
Total other-than-temporary impairment losses on investment securities	(2,077)		(8,336)		(14,218)		(31,982)
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	985		1,126		8,674		(41,606)
Net other-than-temporary impairment losses on investment securities, credit portion	(1,092)		(7,210)		(5,544)		(73,588)
Other than Temporary Impairment, Net Noncredit Portion in Accmulated Other Comprehensive Loss [Roll Forward]
Balance at beginning of period	(420,392)		(488,887)		(450,996)		(621,528)
Noncredit portion of other-than-temporary impairment losses on held-to-maturity securities	(2,013)		(5,231)		(10,931)		(16,910)
Reclassification adjustment of noncredit component of impairment losses included in net income relating to held-to-maturity securities	1,028		4,105		2,257		58,516
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	985		1,126		8,674		(41,606)
Accretion of noncredit portion of impairment losses on held-to-maturity securities	17,838		35,288		56,131		125,197
Balance at end of period	(403,539)		(454,725)		(403,539)		(454,725)
Private-Label Residential MBS[Member] | Prime [Member]
Other-than-temporary Impairment Credit Losses Recognized in Current Period [Abstract]
Par Value	1,411				1,411
Amortized Cost	1,411				1,411
Carrying Value	1,040				1,040
Fair Value	1,040				1,040
Other-than-temporary Impairment Credit Losses Recognized During the Life of the Security [Abstract]
Par Value	73,848				73,848
Amortized Cost	63,484				63,484
Carrying Value	47,198				47,198
Fair Value	55,612				55,612
Other Than Temporary Impaired Investment [Abstract]
Total other-than-temporary impairment losses on investment securities	(371)				(371)
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	371				371
Net other-than-temporary impairment losses on investment securities, credit portion	0				0
Other than Temporary Impairment, Net Noncredit Portion in Accmulated Other Comprehensive Loss [Roll Forward]
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	371				371
Private-Label Residential MBS[Member] | Alt-A [Member]
Other-than-temporary Impairment Credit Losses Recognized in Current Period [Abstract]
Par Value	199,089	[1]			199,089	[1]
Amortized Cost	145,328				145,328
Carrying Value	103,488				103,488
Fair Value	114,646				114,646
Other-than-temporary Impairment Credit Losses Recognized During the Life of the Security [Abstract]
Par Value	1,814,813				1,814,813
Amortized Cost	1,320,029				1,320,029
Carrying Value	933,949				933,949
Fair Value	1,045,635				1,045,635
Other Than Temporary Impaired Investment [Abstract]
Total other-than-temporary impairment losses on investment securities	(1,706)				(13,847)
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	614				8,306
Net other-than-temporary impairment losses on investment securities, credit portion	(1,092)				(5,541)
Other than Temporary Impairment, Net Noncredit Portion in Accmulated Other Comprehensive Loss [Roll Forward]
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	614				8,306
ABS Backed by Home Equity Loans [Member] | Subprime [Member]
Other-than-temporary Impairment Credit Losses Recognized During the Life of the Security [Abstract]
Par Value	5,685				5,685
Amortized Cost	5,040				5,040
Carrying Value	3,867				3,867
Fair Value	4,376				4,376
Other Than Temporary Impaired Investment [Abstract]
Total other-than-temporary impairment losses on investment securities	0				0
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	0				(3)
Net other-than-temporary impairment losses on investment securities, credit portion	0				(3)
Other than Temporary Impairment, Net Noncredit Portion in Accmulated Other Comprehensive Loss [Roll Forward]
Net amount of impairment losses reclassified to (from) accumulated other comprehensive loss	0				(3)
Held-to-maturity Securities [Member]
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance at beginning of period	520,654		562,358		544,833		523,881
Credit losses for which other-than-temporary impairment was not previously recognized	0		0		0		46
Additional credit losses for which an other-than-temporary impairment charge was previously recognized	1,092	[2]	7,210	[2]	5,544	[2]	73,542	[2]
Securities matured during the period	(8,065)		(15,889)		(32,697)		(42,089)
Increase in cash flows expected to be collected which are recognized over the remaining life of the security	(2,609)		(731)		(6,608)		(2,432)
Balance at end of period	$ 511,072		$ 552,948		$ 511,072		$ 552,948

[1] Securities are classified in the table above based upon the current performance characteristics of the underlying loan pool and therefore the manner in which the loan pool backing the security has been modeled (as prime, Alt-A, or subprime), rather than their classification of the security at the time of issuance.

[2] For the three months ended September 30, 2012, and 2011, additional credit losses for which an other-than-temporary impairment charge was previously recognized relate to all securities that were also previously impaired prior to July 1, 2012 and 2011. For the nine months ended September 30, 2012 and 2011, additional credit losses for which an other-than-temporary impairment charge was previously recognized relate to all securities that were also previously impaired prior to January 1, 2012 and 2011.

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Other-Than-Temporary Impairment

9 Months Ended

Sep. 30, 2012

Other-Than-Temporary Impairment Analysis [Abstract]

Other-than-Temporary Impairment [Text Block]

Other-Than-Temporary Impairment

We evaluate our individual available-for-sale and held-to-maturity securities for other-than-temporary impairment each quarter. As part of our evaluation of securities for other-than-temporary impairment, we consider whether we intend to sell each security for which fair value is less than amortized cost or whether it is more likely than not that we will be required to sell the security before the anticipated recovery of the remaining amortized cost. If either of these conditions is met, we recognize an other-than-temporary impairment charge in earnings equal to the entire difference between the security's amortized cost basis and its fair value at the statement of condition date. For securities in an unrealized loss position that meet neither of these conditions and for all residential private-label MBS, we perform a cash-flow analysis to determine whether the entire amortized cost basis of these impaired securities, including all previously other-than-temporarily impaired securities, will be recovered. If we do not expect to recover the entire amount, the unrealized loss position is considered to be other-than-temporarily impaired. We evaluate the security's other-than-temporary impairment to determine the amount of credit loss to be recognized in earnings, which is limited to the amount of that security's unrealized loss.

In performing a detailed cash-flow analysis, we identify the best estimate of the cash flows expected to be collected. If this estimate results in a present value of expected cash flows (discounted at the security's effective yield) that is less than the amortized cost basis of a security (that is, a credit loss exists), other-than-temporary impairment is considered to have occurred. For determining the present value of variable-rate and hybrid private-label residential MBS, we use the effective interest rate derived from a variable-rate index, such as one-month London Interbank Offered Rate (LIBOR), plus the contractual spread, plus or minus a fixed-spread adjustment when there is an existing discount or premium on the security. As the implied forward curve of a selected variable-rate index changes over time, the effective interest rates derived from that index will also change over time and would therefore impact the present value of the subject security.

Available-for-Sale Securities

As a result of these evaluations, we determined that none of our available-for-sale securities were other-than-temporarily impaired at September 30, 2012. At September 30, 2012, we held certain available-for-sale securities in an unrealized loss position. These unrealized losses reflect the impact of normal yield and spread fluctuations attendant with security markets. These losses are considered temporary as we expect to recover the entire amortized cost basis on these available-for-sale securities in an unrealized loss position and neither intend to sell these securities nor is it more likely than not that we will be required to sell these securities before the anticipated recovery of each security's remaining amortized cost basis. Additionally, there have been no shortfalls of principal or interest on any available-for-sale security. Regarding securities that were in an unrealized loss position as of September 30, 2012:

• Debentures issued by a supranational institution that were in an unrealized loss position as of September 30, 2012, are expected to return contractual principal and interest, based on our review and analysis of independent third-party credit reports on the supranational institution, and such supranational institution is rated triple-A (or equivalent) by each of the nationally recognized statistical rating organizations (NRSROs).

• Debentures issued by U.S. government corporations are not obligations of the U.S. government and not guaranteed by the U.S. government. However, these securities are rated at the same level as the U.S. government by the NRSROs. These ratings reflect the U.S. government's implicit support of the government corporation as well as the entity's underlying business and financial risk.

• We have concluded that the probability of default on debt issued by the Federal National Mortgage Association (Fannie Mae) and the Federal Home Loan Mortgage Corporation (Freddie Mac) is remote given their status as GSEs and their support from the U.S. government.

Held-to-Maturity Securities

HFA Securities. We have reviewed our investments in HFA securities and have determined that unrealized losses reflect the impact of normal market yield and spread fluctuations and illiquidity in the credit markets. We have determined that all unrealized losses are temporary given the creditworthiness of the issuers and the underlying collateral, including an assessment of past payment history (no shortfalls of principal or interest), property vacancy rates, debt service ratios, over-collateralization and other credit enhancement, and third-party bond insurance as applicable. As of September 30, 2012, none of our held-to-maturity investments in HFA securities were rated below investment grade by an NRSRO. Because the decline in market value is attributable to changes in interest rates and credit spreads and illiquidity in the credit markets and not to a significant deterioration in the fundamental credit quality of these obligations, and because we do not intend to sell the investments nor is it more likely than not that we will be required to sell the investments before recovery of the amortized cost basis, we do not consider these investments to be other-than-temporarily impaired at September 30, 2012.

Agency MBS. For MBS issued by Fannie Mae and Freddie Mac, which we sometimes refer to as agency MBS in this report, we determined that the strength of the issuers' guarantees through direct obligation or support from the U.S. government is sufficient to protect us from losses based on current expectations. Additionally, there have been no shortfalls of principal or interest on any such security. As a result, we have determined that, as of September 30, 2012, all of the gross unrealized losses on such MBS are temporary. We do not believe that the declines in market value of these securities are attributable to credit quality, and because we do not intend to sell the investments, nor is it more likely than not that we will be required to sell the investments before recovery of the amortized cost basis, we do not consider any of these investments to be other-than-temporarily impaired at September 30, 2012.

Private-Label Residential MBS and ABS Backed by Home Equity Loans. To ensure consistency in determination of the other-than-temporary impairment for private-label residential MBS and certain home equity loan investments (including home equity ABS) among all FHLBanks, the FHLBanks enhanced their overall other-than-temporary impairment process in 2009 by implementing a FHLBank Systemwide governance committee (the OTTI Governance Committee) and establishing a formal process to ensure consistency in key other-than-temporary impairment modeling assumptions used for purposes of their cash-flow analyses for the majority of these securities. We use the FHLBanks' common framework and approved assumptions for purposes of our other-than-temporary impairment cash-flow analyses of our private-label residential MBS and certain home equity loan investments. For certain private-label residential MBS and home equity loan investments where underlying collateral data is not available, we have used alternative procedures to assess these securities for other-than-temporary impairment. We are responsible for making our own determination of impairment and the reasonableness of assumptions, inputs, and methodologies used and for performing the required present value calculations using appropriate historical cost bases and yields.

Our evaluation includes estimating the projected cash flows that we are likely to collect based on an assessment of all available information, including the structure of the applicable security and certain assumptions to determine whether we will recover the entire amortized cost basis of the security, such as:

• the remaining payment terms for the security;

• prepayment speeds;

• default rates;

• loss severity on the collateral supporting each security based on underlying loan-level borrower and loan characteristics;

• expected housing price changes; and

• interest-rate assumptions.

In accordance with related guidance from the Finance Agency, our primary regulator, we have contracted with the FHLBanks of San Francisco and Chicago to perform the cash-flow analysis underlying our other-than-temporary impairment decisions in certain instances. In the event that neither the FHLBank of San Francisco or the FHLBank of Chicago has the ability to model a particular MBS that we own, we project the expected cash flows for that security based on our expectations as to how the underlying collateral and impact on deal structure resultant from collateral cash flows are forecasted to occur over time. These assumptions are based on factors including, but not limited to loan-level data for each security and modeling variables expectations for securities similar in nature modeled by either the FHLBank of San Francisco or the FHLBank of Chicago. We form these expectations for those securities by reviewing, when available, loan-level data for each such security, and, when such loan-level data is not available for a security, by reviewing loan-level data for similar loan pools as a proxy for such data.

Specifically, we have contracted with the FHLBank of San Francisco to perform cash-flow analyses for our residential private-label MBS other than subprime private-label MBS, and with the FHLBank of Chicago to perform cash-flow analyses for our subprime private-label MBS. The following table provides additional data on who performs these cash-flow analyses for us (dollars in thousands).

	September 30, 2012
	Number of Securities	Par Value		Amortized Cost		Carrying Value		Fair Value
FHLBank of San Francisco	166	$	2,166,292	$	1,673,141	$	1,283,775	$	1,357,009
FHLBank of Chicago	16	22,728		22,095		21,014		18,319
Our own cash-flow projections	12	65,071		52,846		39,754		42,573

To assess whether the entire amortized cost basis of private-label residential MBS will be recovered, cash-flow analyses for each of our private-label residential MBS were performed. These analyses use two third-party models.

The first third-party model considers borrower characteristics and the particular attributes of the loans underlying our securities, in conjunction with assumptions about current home prices and future changes in home prices and interest rates, producing monthly projections of prepayments, defaults, and loss severities. A significant input to the first model is the forecast of future housing-price changes for the relevant states and core-based statistical areas (CBSAs), based on an assessment of the individual housing markets. The term CBSA refers collectively to metropolitan and micropolitan statistical areas as defined by the United States Office of Management and Budget. As currently defined, a CBSA must contain at least one core urban area with a population of 10,000 or more people, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties. Our housing-price forecast as of September 30, 2012, assumed current-to-trough home price declines ranging from 0.0 percent (for those housing markets that are believed to have reached their trough) to 4.0 percent. For those markets for which further home price declines are anticipated, such declines were projected to occur over the three- to nine-month period beginning July 1, 2012. For the vast majority of markets where further home price declines are anticipated, the declines were projected to range from 1.0 percent to 2.0 percent over the three-month period beginning July 1, 2012. From the trough, home prices were projected to recover using one of five different recovery paths that vary by housing market. Under those recovery paths, home prices were projected to increase as follows:

Months	Recovery Range of
1-6	0.0	%	to	2.8%
7-18	0.0	%	to	3.0%
19-24	1.0	%	to	4.0%
25-30	2.0	%	to	4.0%
31-42	2.0	%	to	5.0%
43-66	2.0	%	to	6.0%
Thereafter	2.3	%	to	5.6%

The month-by-month projections of future loan performance are derived from the first model to determine projected prepayments, defaults, and loss severities. These projections are then input into a second model that calculates the projected loan-level cash flows and then allocates those cash flows and losses among the various classes in the securitization structure in accordance with the cash-flow and loss-allocation rules prescribed by the securitization structure. In a securitization in which the credit enhancement for the senior securities is derived from the presence of subordinate securities, losses are generally allocated first to the subordinate securities until their principal balance is reduced to zero. The projected cash flows are based on a number of assumptions and expectations and the results of these models can vary significantly with changes in assumptions and expectations. The scenario of cash flows determined based on the model approach described above reflects a best estimate scenario and includes a base case current-to-trough housing price forecast and a base case housing price recovery path described in the prior paragraph.

We do not intend to sell these securities and believe it is not more likely than not that we will be required to sell these securities before the anticipated recovery of each security's remaining amortized cost basis. We recorded other-than-temporary impairment credit losses of $1.1 million for the three months ended September 30, 2012. For held-to-maturity securities, the noncredit portion of an other-than-temporary impairment charge that is recognized in other comprehensive income is accreted from accumulated other comprehensive loss to the carrying value of the security over the remaining life of the security in a prospective manner based on the amount and timing of estimated cash flows. This accretion continues until the security is sold or matures, or an additional other-than-temporary impairment charge is recorded in earnings, which could result in a reclassification adjustment and the establishment of a new amount to be accreted. For the three months ended September 30, 2012, we accreted $17.8 million of noncredit impairment from accumulated other comprehensive loss to the carrying value of held-to-maturity securities. For certain other-than-temporarily impaired securities that were previously impaired and have subsequently incurred additional credit losses during the three months ended September 30, 2012, the additional credit losses, up to the amount in accumulated other comprehensive loss, were reclassified out of noncredit-related losses in accumulated other comprehensive loss and charged to earnings. This amount was $1.0 million for the three months ended September 30, 2012.

For those securities for which an other-than-temporary impairment was determined to have occurred during the three months ended September 30, 2012 (that is, a determination was made that less than the entire amortized cost basis is expected to be recovered), the following table presents a summary of the average projected values over the remaining lives of the securities for the significant inputs used to measure the amount of the credit loss recognized in earnings, as well as related current credit enhancement. Credit enhancement is defined as the percentage of subordinated tranches, over-collateralization, and other credit enhancement, if any, in a security structure that will generally absorb losses before we will experience a loss on the security. The calculated averages represent the dollar-weighted averages of all the private-label residential MBS and home equity loan investments in each category shown (dollars in thousands). We note that we have instituted litigation in relation to certain of the private-label MBS in which we invested. Our complaint asserts, among others, claims for untrue or misleading statements in the sale of securities. It is possible that classifications of private-label MBS as provided herein when based on classification at the time of issuance (as per the following tables in this Note 6, for example) as disclosed by those securities' issuance documents, as well as other statements made by or on behalf of the issuers about the securities, are inaccurate.

			Significant Inputs
			Projected Prepayment Rates				Projected Default Rates				Projected Loss Severities				Current Credit Enhancement
Private-label MBS by Year of Securitization	Par Value		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent		Weighted Average Percent		Range Percent
Private-label residential MBS
Prime (1)
2004 and prior	$	1,411	6.3	%	6.3	%	30.0	%	30.0	%	47.7	%	47.7	%	19.1	%	19.1	%
Alt-A (1)
2007	$	11,310	2.8	%	2.8	%	74.8	%	74.8	%	50.8	%	50.8	%	36.4	%	36.4	%
2006	153,662		4.0		2.8 - 6.5		69.4		52.1 - 79.6		53.1		50.8 - 55.7		21.2		0.0 - 35.5
2005	34,117		5.7		5.7		54.3		54.3		55.3		55.3		—		—
Total Alt-A	$	199,089	4.3	%	2.8 - 6.5		67.1	%	52.1 - 79.6		53.4	%	50.8 - 55.7		18.4	%	0.0 - 36.4

_______________________

(1)Securities are classified in the table above based upon the current performance characteristics of the underlying loan pool and therefore the manner in which the loan pool backing the security has been modeled (as prime, Alt-A, or subprime), rather than their classification of the security at the time of issuance.

We own certain private-label MBS that are insured by third-party bond insurers (monoline insurers). Together with the other FHLBanks, we have performed analyses to assess the financial strength of these monoline insurers to establish an expected case regarding the time horizon of the bond insurers' ability to fulfill their financial obligations and provide credit support. The projected time horizon of credit protection provided by an insurer is a function of claims-paying resources and anticipated claims in the future. This assumption is referred to as the “burnout period” and is expressed in months. Of the five monoline insurers, the financial guarantee from Assured Guaranty Municipal Corp. is considered sufficient to cover all future claims and, therefore, the burnout analysis is not applicable as discussed above. Conversely, the burnout period for three monoline insurers, Syncora Guarantee Inc., Financial Guaranty Insurance Corp., and Ambac Assurance Corp., is not considered applicable due to regulatory intervention that has generally suspended all claims payments to effectively zero. One of these insurers, Ambac Assurance Corp., has recently received permission from a Wisconsin Circuit Court to start paying 25 percent of policy claims in cash that have arisen since Ambac ceased paying claims in March 2010 at the direction of the Wisconsin Commissioner of Insurance. While these cash payments commenced in the third quarter of 2012, uncertainty surrounding other aspects of the company's rehabilitation plan is currently preventing us from including these payments in our cash flow modeling. For the remaining monoline insurer, MBIA Insurance Corp., the burnout period as of September 30, 2012, is three months, ending December 31, 2012. None of our securities that are guaranteed by MBIA Insurance Corp. were determined to have an other-than-temporary impairment credit loss at September 30, 2012.

The following table sets forth our securities for which other-than-temporary impairment credit losses were recognized in the three months ending September 30, 2012 (dollars in thousands). Securities are classified in the table below based on their classifications at the time of issuance.

	September 30, 2012
Other-Than-Temporarily Impaired Investment	Par Value		Amortized Cost		Carrying Value		Fair Value
Private-label residential MBS – Prime	$	1,411	$	1,411	$	1,040	$	1,040
Private-label residential MBS – Alt-A	199,089		145,328		103,488		114,646
Total other-than-temporarily impaired securities	$	200,500	$	146,739	$	104,528	$	115,686

The following table sets forth our securities for which other-than-temporary impairment credit losses were recognized during the life of the security through September 30, 2012 (dollars in thousands). Securities are classified in the table below based on their classifications at the time of issuance.

	September 30, 2012
Other-Than-Temporarily Impaired Investment	Par Value		Amortized Cost		Carrying Value		Fair Value
Private-label residential MBS – Prime	$	73,848	$	63,484	$	47,198	$	55,612
Private-label residential MBS – Alt-A	1,814,813		1,320,029		933,949		1,045,635
ABS backed by home equity loans – Subprime	5,685		5,040		3,867		4,376
Total other-than-temporarily impaired securities	$	1,894,346	$	1,388,553	$	985,014	$	1,105,623

The following table sets forth other-than-temporary impairment credit losses that were recognized for the three and nine months endedSeptember 30, 2012, by investment classification (dollars in thousands). Securities are classified in the table below based on the classification at the time of issuance.

	For the Three Months Ended September 30, 2012								For the Nine Months Ended September 30, 2012
Other-Than-Temporarily Impaired Investment	Total Other-Than-Temporary Impairment Losses on Investment Securities			Net Amount of Impairment Losses Reclassified to Accumulated Other Comprehensive Loss		Net Other-Than-Temporary Impairment Losses on Investment Securities, Credit Portion			Total Other-Than-Temporary Impairment Losses on Investment Securities			Net Amount of Impairment Losses Reclassified to (from) Accumulated Other Comprehensive Loss			Net Other-Than-Temporary Impairment Losses on Investment Securities, Credit Portion
Private-label residential MBS – Prime	$	(371	)	$	371	$	—		$	(371	)	$	371		$	—
Private-label residential MBS – Alt-A	(1,706		)	614		(1,092		)	(13,847		)	8,306			(5,541		)
ABS backed by home equity loans – Subprime	—			—		—			—			(3		)	(3		)
Total other-than-temporarily impaired securities	$	(2,077	)	$	985	$	(1,092	)	$	(14,218	)	$	8,674		$	(5,544	)

The following table presents a roll-forward of the amounts related to credit losses recognized into earnings. The roll-forward is the amount of credit losses on investment securities on which we recognized a portion of other-than-temporary impairment charges into accumulated other comprehensive loss (dollars in thousands).

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Balance at beginning of period	$	520,654		$	562,358		$	544,833		$	523,881
Additions:
Credit losses for which other-than-temporary impairment was not previously recognized	—			—			—			46
Additional credit losses for which an other-than-temporary impairment charge was previously recognized(1)	1,092			7,210			5,544			73,542
Reductions:
Securities matured during the period	(8,065		)	(15,889		)	(32,697		)	(42,089		)
Increase in cash flows expected to be collected which are recognized over the remaining life of the security	(2,609		)	(731		)	(6,608		)	(2,432		)
Balance at end of period	$	511,072		$	552,948		$	511,072		$	552,948

_______________________

(1) For the three months ended September 30, 2012, and 2011, additional credit losses for which an other-than-temporary impairment charge was previously recognized relate to all securities that were also previously impaired prior to July 1, 2012 and 2011. For the nine months endedSeptember 30, 2012 and 2011, additional credit losses for which an other-than-temporary impairment charge was previously recognized relate to all securities that were also previously impaired prior to January 1, 2012 and 2011.

The following table presents a roll-forward of the amounts related to the net noncredit portion of other-than-temporary impairment losses on held-to-maturity securities included in accumulated other comprehensive loss (dollars in thousands).

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Balance at beginning of period	$	(420,392	)	$	(488,887	)	$	(450,996	)	$	(621,528	)
Amounts reclassified (to) from accumulated other comprehensive loss:
Noncredit portion of other-than-temporary impairment losses on held-to-maturity securities	(2,013		)	(5,231		)	(10,931		)	(16,910		)
Reclassification adjustment of noncredit component of impairment losses included in net income relating to held-to-maturity securities	1,028			4,105			2,257			58,516
Net amount of impairment losses reclassified (to) from accumulated other comprehensive loss	(985		)	(1,126		)	(8,674		)	41,606
Accretion of noncredit portion of impairment losses on held-to-maturity securities	17,838			35,288			56,131			125,197
Balance at end of period	$	(403,539	)	$	(454,725	)	$	(403,539	)	$	(454,725	)

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Advances

9 Months Ended

Sep. 30, 2012

Advances [Abstract]

Advances [Text Block]

Advances

General Terms. At September 30, 2012 and December 31, 2011, we had advances outstanding with interest rates ranging from (0.03) percent to 8.37 percent and 0.00 percent to 8.37 percent, respectively, as summarized below (dollars in thousands). Advances with negative interest rates contain embedded interest rate features that have met the requirements to be separated from the host contract and are recorded as stand-alone derivatives, and which we economically hedge with derivatives containing offsetting interest rate features.  

	September 30, 2012					December 31, 2011
Year of Contractual Maturity	Amount			Weighted Average Rate		Amount			Weighted Average Rate
Overdrawn demand-deposit accounts	$	13,013		0.54	%	$	7,683		0.45	%
Due in one year or less	11,087,724			0.88		8,266,384			1.15
Due after one year through two years	2,209,838			2.75		5,563,728			1.98
Due after two years through three years	2,341,603			2.71		2,721,354			2.88
Due after three years through four years	2,003,841			2.72		1,997,587			2.96
Due after four years through five years	3,094,195			3.01		2,151,231			2.90
Thereafter	2,594,097			3.23		3,873,205			3.71
Total par value	23,344,311			1.94	%	24,581,172			2.23	%
Premiums	50,035					37,378
Discounts	(22,965		)			(23,748		)
Market value of embedded derivatives (1)	1,008					—
Hedging adjustments	543,298					600,096
Total	$	23,915,687				$	25,194,898

_________________________

(1) At September 30, 2012, the Bank had certain advances with embedded features that met the requirements to be separated from the host contract and designate the embedded features as a stand-alone derivative.

We offer putable advances that provide us with the right to put the fixed-rate advance to the borrower (and thereby extinguish the advance) on predetermined exercise dates (put dates), and offer, subject to certain conditions, replacement funding at then-current advances rates. Generally, we would exercise the put options when interest rates increase. At September 30, 2012, and December 31, 2011, we had putable advances outstanding totaling $3.6 billion and $4.7 billion, respectively.

The following table sets forth our advances outstanding by the year of contractual maturity or next put date for putable advances (dollars in thousands):

	September 30, 2012				December 31, 2011
Year of Contractual Maturity or Next Put Date	Par Value		Percentage of Total		Par Value		Percentage of Total
Overdrawn demand-deposit accounts	$	13,013	0.1	%	$	7,683	0.0	%
Due in one year or less	14,311,649		61.3		12,244,459		49.8
Due after one year through two years	1,848,588		7.9		4,975,328		20.2
Due after two years through three years	2,065,353		8.8		2,231,354		9.1
Due after three years through four years	1,707,941		7.3		1,797,337		7.3
Due after four years through five years	1,541,670		6.6		1,713,831		7.0
Thereafter	1,856,097		8.0		1,611,180		6.6
Total par value	$	23,344,311	100.0	%	$	24,581,172	100.0	%

We also offer callable advances that provide borrowers with the right to call, on predetermined option exercise dates, the advance prior to maturity without incurring prepayment or termination fees (callable advances). In exchange for receiving the right to call the advance on a predetermined call schedule, the borrower pays a higher fixed rate for the advance relative to an equivalent maturity, noncallable, fixed-rate advance. If the call option is exercised, replacement funding may be available. Other advances may only be prepaid by paying a fee (a prepayment fee) that makes us financially indifferent to the prepayment of the advance. At September 30, 2012, and December 31, 2011, we had callable advances outstanding totaling $32.5 million and $2.5 million, respectively.

Interest-Rate-Payment Terms. The following table details interest-rate-payment types for our outstanding advances (dollars in thousands):

Par value of advances	September 30, 2012		December 31, 2011
Fixed-rate	$	19,272,798	$	20,096,489
Variable-rate	4,071,513		4,484,683
Total par value	$	23,344,311	$	24,581,172

At September 30, 2012, 32.8 percent of our fixed-rate advances were swapped to a floating rate and 3.7 percent of our variable-rate advances were swapped to a different variable-rate index. At December 31, 2011, 39.0 percent of our fixed-rate advances were swapped to a floating rate and 0.5 percent of our variable-rate advances were swapped to a different variable-rate index.

Credit Risk Exposure and Security Terms.

Our potential credit risk from advances is principally concentrated in commercial banks, insurance companies, savings institutions, and credit unions. At September 30, 2012, and December 31, 2011, we had $5.0 billion and $7.4 billion, respectively, of advances issued to members with at least $1.0 billion of advances outstanding. These advances were made to two borrowers at September 30, 2012, and three borrowers at December 31, 2011, representing 21.3 percent and 30.0 percent, respectively, of total par value of outstanding advances.

We lend to our members and certain nonmember institutions that are eligible to borrow from us (referred to as housing associates) chartered within the six New England states in accordance with federal statutes, including the Federal Home Loan Bank Act of 1932, as amended (the FHLBank Act). The FHLBank Act generally requires us to hold, or have access to, collateral to secure our advances. We maintain policies and procedures that are intended to manage credit risk including, without limitation, requirements for physical possession or control of pledged collateral, restrictions on borrowing, specific review of each advance request, verifications of collateral, and continuous monitoring of borrowings and the borrower's financial condition. Based on the collateral pledged as security for advances, management's credit analysis of the borrower's financial condition, and credit extension and collateral policies, we do not expect any losses on advances and expect to collect all amounts due according to the contractual terms of the advances. Therefore, we have not provided any allowance for losses on advances. For information related to our credit risk on advances and allowance for credit losses, see Note 9 — Allowance for Credit Losses.

Prepayment Fees. We record prepayment fees received from borrowers on prepaid advances net of any associated basis adjustments related to hedging activities on those advances and net of deferred prepayment fees on advance prepayments considered to be loan modifications. Additionally, under certain advances products the prepayment-fee provisions of the advance agreement could result in either a payment from the borrower or to the borrower when such an advance is prepaid, based upon market conditions at the time of prepayment (referred to as a symmetrical prepayment fee). Advances with a symmetrical prepayment fee provision are hedged with derivatives containing offsetting terms, so that we are financially indifferent to the borrower's decision to prepay such advances. The net amount of prepayment fees is reflected as interest income in the statement of operations.

For the three and nine months ended September 30, 2012 and 2011, net advance prepayment fees recognized in income are reflected in the following table (dollars in thousands):

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Prepayment fees received from borrowers	$	23,247		$	49,976		$	91,471		$	68,641
Less: hedging fair-value adjustments on prepaid advances	(11,125		)	(45,848		)	(50,270		)	(52,822		)
Less: net premiums associated with prepaid advances	(1,433		)	(1,218		)	(1,770		)	(1,781		)
Less: deferred recognition of prepayment fees received from borrowers on advance prepayments deemed to be loan modifications	(2,893		)	(1,084		)	(4,580		)	(2,461		)
Prepayment fees recognized in income on advance restructurings deemed to be extinguishments	4,078			7,240			9,497			8,816
Net prepayment fees recognized in income	$	11,874		$	9,066		$	44,348		$	20,393

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Allowance for Credit Losses

9 Months Ended

Sep. 30, 2012

Allowance for Credit Losses [Abstract]

Allowance for Credit Losses [Text Block]

Allowance for Credit Losses

We have developed and documented a systematic methodology for determining an allowance for credit losses for our:

• extensions of credit, such as our advances and letters of credit;

• investments in government mortgage loans held for portfolio;

• investments in conventional mortgage loans held for portfolio;

• investments via term securities purchased under agreements to resell; and

• investments via term federal funds sold.

An allowance for credit losses is a valuation allowance separately established for each identified portfolio segment, if necessary, to provide for probable losses inherent in our portfolio as of the statement of condition date. To the extent necessary, an allowance for credit losses for off-balance-sheet credit exposure is recorded as a liability.

Portfolio Segments. We have established an allowance methodology for each of our portfolio segments. A portfolio segment is defined as the level at which an entity develops and documents a systematic method for determining its allowance for credit losses.

Classes of Financing Receivables. Classes of financing receivables generally are a disaggregation of a portfolio segment to the extent that is needed to understand the exposure to credit risk arising from these financing receivables. We determined that no further disaggregation of portfolio segments identified above is needed as we assessed and measured the credit risk arising from these financing receivables at the portfolio segment level.

Credit Products

We manage our credit exposure to credit products through an integrated approach that generally provides for a credit limit to be established for each borrower, includes an ongoing review of each borrower's financial condition, and is coupled with collateral and lending policies that are intended to limit risk of loss while balancing borrowers' needs for a reliable source of funding. In addition, we lend in accordance with the FHLBank Act, Finance Agency regulations, and other applicable laws. The FHLBank Act requires us to obtain sufficient collateral to secure our credit products. The estimated value of the collateral pledged to secure each borrower's credit products is calculated by applying collateral discounts, or haircuts, to the value of the collateral. We accept certain investment securities, residential mortgage loans, deposits, and other assets as collateral. We require all borrowers that pledge securities collateral to place physical possession of such securities collateral with our safekeeping agent or the borrower's securities corporation, subject to a control agreement giving us appropriate control over such collateral. In addition, community financial institutions are eligible to use expanded statutory collateral provisions for small-business and agriculture loans. Members also pledge their Bank capital stock as collateral. Collateral arrangements may vary depending upon borrower credit quality, financial condition, performance, borrowing capacity, and overall credit exposure to the borrower. We can call for additional or substitute collateral to further safeguard our security interest. We believe our policies appropriately manage our credit risks arising from our credit products.

Depending on the financial condition of the borrower, we may allow the borrower to retain possession of loan collateral pledged to us while agreeing to hold such collateral for our benefit or require the borrower to specifically assign or place physical possession of such loan collateral with us or a third-party custodian that we approve.

We are provided an additional safeguard for our security interests by Section 10(e) of the FHLBank Act, which generally affords any security interest granted by a borrower to the Bank priority over the claims and rights of any other party. The exceptions to this prioritization are limited to claims that would be entitled to priority under otherwise applicable law and are held by bona fide purchasers for value or by secured parties with higher priority perfected security interests. However, the priority granted to our security interests under Section 10(e) of the FHLBank Act may not apply when lending to insurance company members. This is due to the anti-preemption provision contained in the McCarran-Ferguson Act, which provides that federal law does not preempt state insurance law unless the federal law expressly regulates the business of insurance. Thus, if state law conflicts with Section 10(e) of the FHLBank Act, the protection afforded by this provision may not be available to us. However, we perfect our security interests in the collateral pledged by our members, including insurance company members, by filing UCC-1 financing statements, taking possession or control of such collateral, or taking other appropriate steps.

Using a risk-based approach and taking into consideration each borrower's financial strength, we consider the types and level of collateral to be the primary indicator of credit quality on our credit products. At September 30, 2012, and December 31, 2011, we had rights to collateral, on a borrower-by-borrower basis, with an estimated value in excess of our outstanding extensions of credit. The estimated value of the collateral required to secure each borrower's obligations is calculated by applying collateral discounts or haircuts.

We continue to evaluate and make changes to our collateral guidelines based on market conditions. At September 30, 2012, and December 31, 2011, we did not have any credit products that were past due, on nonaccrual status, or considered impaired. In addition, there were no troubled debt restructurings related to credit products during the nine months endedSeptember 30, 2012, and September 30, 2011.

Based upon the collateral held as security, our credit extension and collateral policies, management's credit analysis, and the repayment history on credit products, we have not recorded any allowance for credit losses on credit products at September 30, 2012, and December 31, 2011. At September 30, 2012, and December 31, 2011, no liability to reflect an allowance for credit losses for off-balance-sheet credit exposures was recorded. See Note 18 — Commitments and Contingencies for additional information on our off-balance-sheet credit exposure.

Government MortgageLoans Held for Portfolio

We invest in government mortgage loans secured by one- to four-family residential properties. Government mortgage loans are mortgage loans insured or guaranteed by the Federal Housing Administration, the Department of Veterans Affairs, the Rural Housing Service of the Department of Agriculture, or by the U.S. Department of Housing and Urban Development.

The servicer provides and maintains insurance or a guarantee from the applicable government agency. The servicer is responsible for compliance with all government agency requirements and for obtaining the benefit of the applicable insurance or guaranty with respect to defaulted government-guaranteed mortgage loans. Any losses incurred on such loans that are not recovered from the insurer or guarantor are absorbed by the related servicer. Therefore, we only have credit risk for these loans if the servicer fails to pay for losses not covered by insurance or guarantees. Based on our assessment of our servicers for these loans, there is no allowance for credit losses for the government mortgage loan portfolio as of September 30, 2012, and December 31, 2011. In addition, these mortgage loans are not placed on nonaccrual status due to the government guarantee or insurance on these loans and the contractual obligation of the loan servicers to repurchase their related loans when certain criteria are met.

Conventional Mortgage Loans Held for Portfolio

We use a model to determine our allowance for credit losses based on our investments in conventional mortgage loans. We periodically adjust the key inputs to this model in an effort intended to properly align our loss projections with the market conditions that are relevant to these loans. The key inputs to the model include past and current performance of these loans (including portfolio delinquency and default migration statistics), overall loan portfolio performance characteristics (including loss-mitigation features, especially credit enhancements, as discussed below under — Credit Enhancements), and loss-severity estimates for these loans. We update the following inputs at least once per quarter: current outstanding loan amounts, delinquency statistics of the portfolio, and related loss-mitigation features (including credit-enhancement and estimated credit-enhancement fee-recovery amounts) for all master commitments. A master commitment is a document which provides the general terms under which the participating financial institution will deliver mortgage loans, including a maximum loan delivery amount, maximum credit enhancement, if applicable, and expiration date. Additionally, we review the model's default migration factor on a quarterly basis to determine if the portfolio has exhibited any change in loans migrating from current to delinquent or from delinquent to default and make adjustments as appropriate.

We use a third-party loan-loss projection model to determine our loss-severity estimates for our master commitments. We update our loss-severity estimates periodically as we determine appropriate, but not less than once per year. The inputs to this model include loan-related characteristics (such as property types and locations), industry data (such as foreclosure timelines and associated costs), and current and projected housing prices.

Nonaccrual Loans. We place conventional mortgage loans on nonaccrual status when the collection of the contractual principal or interest is 90 days or more past due. When a conventional mortgage loan is placed on nonaccrual status, accrued but uncollected interest is reversed against interest income in the current period. We generally record cash payments received on nonaccrual loans first as interest income and then as a reduction of principal as specified in the contractual agreement, unless the collection of the remaining principal amount due is considered doubtful. If the collection of the remaining principal amount due is considered doubtful, cash payments received would be applied first solely to principal until the remaining principal amount due is expected to be collected and then as a recovery of any charge-off, if applicable, followed by recording interest income. A loan on nonaccrual status may be restored to accrual status when the collection of the contractual principal and interest is less than 90 days past due.

Impairment Methodology. A loan is considered impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due according to the contractual terms of the loan agreement.

Loans that are on nonaccrual status and that are considered collateral-dependent are measured for impairment based on the fair value of the underlying property less estimated selling costs. Loans are considered collateral-dependent if repayment is expected to be provided solely by the sale of the underlying property, that is, there is no other available and reliable source of repayment. Collateral-dependent loans are impaired if the fair value of the underlying collateral less estimated selling costs is insufficient to recover the unpaid principal balance on the loan. Interest income on impaired loans is recognized in the same manner as nonaccrual loans as discussed above.

Charge-Off Policy. We evaluate whether to record a charge-off on a conventional mortgage loan upon the occurrence of a confirming event. Confirming events include, but are not limited to, the occurrence of foreclosure or notification of a claim against any of the credit enhancements. A charge-off is recorded if we determine that the recorded investment in the loan is not likely to be recovered.

Collectively Evaluated Mortgage Loans. We evaluate the credit risk of our investments in conventional mortgage loans for impairment on a collective basis that considers loan-pool-specific attribute data at the master commitment pool level, applies estimated loss severities, and incorporates available credit enhancements to establish our best estimate of probable incurred losses. Migration analysis is a methodology for estimating the rate of default experienced on pools of similar loans based on our historical experience. We apply migration analysis to conventional loans that are currently not past due, loans that are 30 to 59 days past due, 60 to 89 days past due, and 90 or more days past due. We then estimate the dollar amount of loans in these categories that we believe are likely to migrate to a realized loss position and apply a loss severity factor to estimate losses that would be incurred at the statement of condition date. Additionally, for our investments in loans modified under our temporary loan modification plan, on the effective date of a loan modification we measure the present value of expected future cash flows discounted at the loan's effective interest rate and reduce the carrying value of the loan accordingly. See — Troubled Debt Restructurings below for information on our temporary loan modification program.

Estimating a Margin of Imprecision. We also assess a factor for the margin for imprecision to the estimation of credit losses for the homogeneous population. The margin for imprecision is a factor in the allowance for credit losses that recognizes the imprecise nature of the measurement process and is included as part of the mortgage loan allowance for credit loss. This amount represents a subjective management judgment based on facts and circumstances that exist as of the reporting date that is unallocated to any specific measurable economic or credit event and is intended to cover other inherent losses that may not be captured in our methodology. The actual loss that may occur on homogeneous populations of mortgage loans may differ from the estimated loss.

Roll-Forward of Allowance for Credit Losses on Mortgage Loans. The following table presents a roll-forward of the allowance for credit losses on conventional mortgage loans for the three and nine months endedSeptember 30, 2012, and 2011, as well as the recorded investment in mortgage loans by impairment methodology at September 30, 2012, and September 30, 2011 (dollars in thousands). The recorded investment in a loan is the par amount of the loan, adjusted for accrued interest, unamortized premiums or discounts, deferred derivative gains and losses, and direct write-downs. The recorded investment is net of any valuation allowance.

	For the Three Months Ended September 30,					For the Nine Months Ended September 30,
	2012			2011		2012			2011
Allowance for credit losses
Balance at beginning of period	$	6,114		$	7,181	$	7,800		$	8,653
Charge-offs	(77		)	—		(229		)	(14		)
Reduction of provision for credit losses	(523		)	—		(2,057		)	(1,458		)
Balance at end of period	$	5,514		$	7,181	$	5,514		$	7,181
Ending balance, individually evaluated for impairment	$	—		$	—	$	—		$	—
Ending balance, collectively evaluated for impairment	$	5,514		$	7,181	$	5,514		$	7,181
Recorded investment, end of period (1)
Individually evaluated for impairment	$	—		$	—	$	—		$	—
Collectively evaluated for impairment	$	3,043,457		$	2,832,696	$	3,043,457		$	2,832,696

_________________________

(1) This amount excludes government mortgage loans because we make no allowance for credit losses based on our investments in government mortgage loans, as discussed above under — Government Mortgage Loans Held for Portfolio.

Credit Quality Indicators. Key credit quality indicators for mortgage loans include the migration of past due loans, nonaccrual loans, loans in process of foreclosure and impaired loans. The tables below set forth certain key credit quality indicators for our investments in mortgage loans at September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012
	Recorded Investment in Conventional Mortgage Loans			Recorded Investment in Government Mortgage Loans			Total
Past due 30-59 days delinquent	$	38,867		$	15,481		$	54,348
Past due 60-89 days delinquent	12,907			3,746			16,653
Past due 90 days or more delinquent	51,240			24,754			75,994
Total past due	103,014			43,981			146,995
Total current loans	2,940,443			367,540			3,307,983
Total mortgage loans	$	3,043,457		$	411,521		$	3,454,978
Other delinquency statistics
In process of foreclosure, included above (1)	$	22,784		$	11,326		$	34,110
Serious delinquency rate (2)	1.70		%	6.02		%	2.21		%
Past due 90 days or more still accruing interest	$	—		$	24,754		$	24,754
Loans on nonaccrual status (3)	$	51,240		$	—		$	51,240

_______________________

(1) Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu of foreclosure has been reported.

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

(3) Includes conventional mortgage loans with contractual principal or interest payments 90 days or more past due and not accruing interest.

	December 31, 2011
	Recorded Investment in Conventional Mortgage Loans			Recorded Investment in Government Mortgage Loans			Total
Past due 30-59 days delinquent	$	41,311		$	15,477		$	56,788
Past due 60-89 days delinquent	11,656			5,973			17,629
Past due 90 days or more delinquent	55,876			24,925			80,801
Total past due	108,843			46,375			155,218
Total current loans	2,710,526			269,101			2,979,627
Total mortgage loans	$	2,819,369		$	315,476		$	3,134,845
Other delinquency statistics
In process of foreclosure, included above (1)	$	32,344		$	7,413		$	39,757
Serious delinquency rate (2)	1.99		%	7.90		%	2.59		%
Past due 90 days or more still accruing interest	$	—		$	24,925		$	24,925
Loans on nonaccrual status (3)	$	55,876		$	—		$	55,876

_______________________

(1) Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu of foreclosure has been reported.

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

(3) Includes conventional mortgage loans with contractual principal or interest payments 90 days or more past due and not accruing interest.

Credit Enhancements. Our allowance for credit losses factors in the credit enhancements associated with conventional mortgage loans under the MPF program. These credit enhancements apply after the homeowner's equity is exhausted and can include primary and/or supplemental mortgage insurance or other kinds of credit enhancement. Any incurred losses that would be recovered from the credit enhancements are not reserved as part of our allowance for loan losses. In such cases, a receivable is generally established to reflect the expected recovery from credit-enhancement arrangements.

The conventional mortgage loans are required to be credit enhanced so that the risk of loss is limited to the losses equivalent to an investor in a double-A rated MBS at the time of purchase. We share the risk of credit losses on our investments in mortgage loans with the related participating financial institution by structuring potential losses on these investments into layers with respect to each master commitment. We analyze the risk characteristics of our mortgage loans using a model from an NRSRO to determine the amount of credit enhancement. This credit-enhancement amount is broken into a first-loss account and a credit-enhancement obligation of a participating financial institution, which is calculated based on the risk analysis to equal the difference between the amounts needed for the master commitment to have a rating equivalent to a double-A rated MBS and our initial first-loss account exposure.

The first-loss account represents the first layer or portion of credit losses which we incur with respect to our investments in mortgage loans after considering the borrower's equity and primary mortgage insurance. The participating financial institution is required to cover the next layer of losses up to an agreed-upon credit-enhancement obligation amount, which may consist of a direct liability of the participating financial institution to pay credit losses up to a specified amount, a contractual obligation of a participating financial institution to provide supplemental mortgage insurance, or a combination of both. We absorb any remaining unallocated losses.

The aggregate amount of the first-loss account is documented and tracked but is neither recorded nor reported as an allowance for loan losses in our financial statements. As credit and special hazard losses are realized that are not covered by the liquidation value of the real property or primary mortgage insurance, they are first charged to us, with a corresponding reduction of the first-loss account for that master commitment up to the amount in the first-loss account at that time. Over time, the first-loss account may cover the expected credit losses on a master commitment, although losses that are greater than expected or that occur early in the life of a master commitment could exceed the amount in the first-loss account. In that case, the excess losses would be charged to the participating financial institution's credit-enhancement amount, then to us after the participating financial institution's credit-enhancement amount has been exhausted.

For loans in which we buy or sell participations from or to other FHLBanks that participate in the MPF program (MPF Banks), the amount of the first-loss account remaining to absorb losses for loans that we own is partly dependent on the percentage of our participation in such loans. Assuming losses occur on a proportional basis between loans that we own and loans owned by other MPF Banks, at September 30, 2012, and December 31, 2011, the amount of first-loss account remaining for losses attributable to us was $20.8 million and $23.8 million, respectively.

Participating financial institutions are paid a credit-enhancement fee for assuming credit risk and in some instances all or a

portion of the credit-enhancement fee may be performance-based. For certain MPF products, our losses incurred under the first-loss account can be mitigated by withholding future performance credit-enhancement fees that would otherwise be payable to the participating financial institutions. We record credit-enhancement fees paid to participating financial institutions as a reduction to mortgage-loan-interest income. We incurred credit-enhancement fees of $782,000 and $762,000 for the three months ended September 30, 2012, and 2011, respectively. For both the nine months endedSeptember 30, 2012, and 2011, we incurred credit-enhancement fees of $2.3 million .

Withheld credit-enhancement fees can mitigate losses from our investments in mortgage loans and therefore we consider our expectations by each master commitment for such withheld fees in determining the allowance for loan losses. More specifically, we determine the amount of credit-enhancement fees available to mitigate losses as follows: accrued credit-enhancement fees to be paid to participating financial institutions; plus projected credit-enhancement fees to be paid to the participating financial institutions over the next 12 months; minus any losses incurred or expected to be incurred. Available credit-enhancement fees cannot be shared between master commitments and, as a result, some master commitments may have sufficient credit-enhancement fees to recover all losses while other master commitments may not.

The following table demonstrates the impact on our estimate of the allowance for credit losses resulting from the loss-mitigating features of conventional mortgage loans (dollars in thousands).

	September 30, 2012			December 31, 2011
Total estimated losses	$	10,077		$	10,274
Less: estimated losses in excess of the first-loss account, to be absorbed by participating financial institutions	(3,879		)	(1,622		)
Less: estimated performance-based credit-enhancement fees available for recapture	(684		)	(852		)
Net allowance for credit losses	$	5,514		$	7,800

Troubled Debt Restructurings. A troubled debt restructuring is considered to have occurred when a concession is granted to a borrower for economic or legal reasons related to the borrower's financial difficulties and that concession would not have been considered otherwise.

Our program under MPF for mortgage loan troubled debt restructurings primarily involves modifying the borrower's monthly payment for a period of up to 36 months to achieve a housing expense ratio of no more than 31 percent of their qualifying monthly income. The outstanding principal balance is first re-amortized to reflect a principal and interest payment for a term not to exceed 40 years. This would result in a balloon payment at the original maturity date of the loan as the maturity date and number of remaining monthly payments are not adjusted. If the 31 percent housing expense ratio is not achieved through re-amortization, the interest rate is reduced for the temporary modification period of up to 36 months in 0.125 percent increments below the original note rate, to a floor rate of 3.00 percent, resulting in reduced principal and interest payments, until the desired 31 percent housing expense ratio is met.

During the three months ended September 30, 2012, we had four troubled debt restructurings. The recorded investment in the troubled debt restructurings pre-modification and post-modification was $734,000 and $715,000, respectively as of the modification date. During the nine months endedSeptember 30, 2012, we had ten troubled debt restructurings. The recorded investment in the troubled debt restructurings for the pre-modification and post-modification was $2.0 million and $1.9 million as of the modification date.

As of September 30, 2012, and December 31, 2011, we had mortgage loans with a recorded investment of $2.3 million and $446,000, respectively that are considered a troubled debt restructuring. As of September 30, 2012, and 2011, our troubled debt restructurings were performing and have not re-defaulted.

REO. At each of September 30, 2012, and December 31, 2011, we had $7.9 million and $6.3 million, respectively in assets classified as REO. During the nine months endedSeptember 30, 2012, and 2011, we sold REO assets with a recorded carrying value of $8.2 million and $7.5 million, respectively. Upon the sale of these properties, and inclusive of any proceeds received from primary mortgage-insurance coverage, we recognized net gains totaling $308,000 and $400,000 on the sale of REO assets during the nine months endedSeptember 30, 2012, and 2011 respectively. Gains and losses on the sale of REO assets are recorded in other income.

Federal Funds Sold and Securities Purchased Under Agreements to Resell.

These investments are all short-term (less than three months). We invest in federal funds sold with investment-grade counterparties and we only evaluate these investments for purposes of an allowance for credit losses if the investment is not paid when due. All investments in federal funds sold as of September 30, 2012, and December 31, 2011, were repaid according to their contractual terms.

Securities purchased under agreements to resell are considered collateralized financing arrangements and effectively represent short-term loans to investment-grade counterparties. The terms of these loans are structured such that if the market value of the underlying securities decreases below the market value required as collateral, the counterparty must provide additional securities as collateral in an amount equal to the decrease or remit cash in such amount, or we will decrease the dollar value of the resale agreement accordingly. If we determine that an agreement to resell is impaired, the difference between the fair value of the collateral and the amortized cost of the agreement is charged to earnings. Based upon the collateral held as security, we determined that no allowance for credit losses was needed for the securities purchased under agreements to resell at September 30, 2012, and December 31, 2011.

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Advances (Interest-Rate-Payment Terms) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Advances [Abstract]
Fixed-rate	$ 19,272,798	$ 20,096,489
Variable-rate	4,071,513	4,484,683
Total par value	$ 23,344,311	$ 24,581,172

XML

Fair Values (Fair Value Measured on Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage delivery commitments	$ 664		$ 914
Derivative Assets	529		16,521
Mortgage delivery commitments	(36,060)		(30,506)
Net cash collateral	330		20,200
Mortgage-Delivery Commmitment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage delivery commitments	85	[1]	128	[1]
Mortgage delivery commitments	(128)	[1]	0	[1]
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[2]
Available-for-sale securities	0	[2]
Derivative Assets	0	[2]
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	279,420	[2]
Available-for-sale securities	5,764,096	[2]
Derivative Assets	116,139	[2]
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[2]
Available-for-sale securities	0	[2]
Derivative Assets	0	[2]
Netting Adjustment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[2]
Available-for-sale securities	0	[2]
Derivative Assets	(115,610)	[2]
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0		0
Available-for-sale securities	0		0
Interest-rate-exchange Agreements Derivative Assets	0		0
Derivative Assets	0		0
Total assets at fair value	0		0
Interest-rate-exchange Agreements Derivative Liabilities	0		0
Total liabilities at fair value	0		0
Recurring [Member] | Level 1 [Member] | Mortgage-Delivery Commmitment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage delivery commitments	0		0
Mortgage delivery commitments	0
Recurring [Member] | Level 1 [Member] | Supranational institutions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Recurring [Member] | Level 1 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	[3]	0	[3]
Recurring [Member] | Level 1 [Member] | U.S. government-owned corporations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Recurring [Member] | Level 1 [Member] | GSEs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Recurring [Member] | Level 1 [Member] | U.S. Government Guaranteed - Residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0		0
Available-for-sale securities	0		0
Recurring [Member] | Level 1 [Member] | GSEs – Residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0		0
Available-for-sale securities	0		0
Recurring [Member] | Level 1 [Member] | GSEs – Commercial MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0		0
Available-for-sale securities	0		0
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	279,420		274,164
Available-for-sale securities	5,764,096		5,280,199
Interest-rate-exchange Agreements Derivative Assets	116,054		229,877
Derivative Assets	116,139		230,005
Total assets at fair value	6,159,655		5,784,368
Interest-rate-exchange Agreements Derivative Liabilities	(1,064,887)		(1,098,547)
Total liabilities at fair value	(1,065,015)		(1,098,547)
Recurring [Member] | Level 2 [Member] | Mortgage-Delivery Commmitment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage delivery commitments	85		128
Mortgage delivery commitments	(128)
Recurring [Member] | Level 2 [Member] | Supranational institutions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	473,416		469,242
Recurring [Member] | Level 2 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	308,225	[3]	564,312	[3]
Recurring [Member] | Level 2 [Member] | U.S. government-owned corporations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	293,600		284,844
Recurring [Member] | Level 2 [Member] | GSEs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	2,148,466		2,782,421
Recurring [Member] | Level 2 [Member] | U.S. Government Guaranteed - Residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	17,496		18,880
Available-for-sale securities	76,957		91,228
Recurring [Member] | Level 2 [Member] | GSEs – Residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	5,380		6,663
Available-for-sale securities	2,361,517		984,808
Recurring [Member] | Level 2 [Member] | GSEs – Commercial MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	256,544		248,621
Available-for-sale securities	101,915		103,344
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0		0
Available-for-sale securities	0		0
Interest-rate-exchange Agreements Derivative Assets	0		0
Derivative Assets	0		0
Total assets at fair value	0		0
Interest-rate-exchange Agreements Derivative Liabilities	0		0
Total liabilities at fair value	0		0
Recurring [Member] | Level 3 [Member] | Mortgage-Delivery Commmitment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage delivery commitments	0		0
Mortgage delivery commitments	0
Recurring [Member] | Level 3 [Member] | Supranational institutions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Recurring [Member] | Level 3 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	[3]	0	[3]
Recurring [Member] | Level 3 [Member] | U.S. government-owned corporations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Recurring [Member] | Level 3 [Member] | GSEs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Recurring [Member] | Level 3 [Member] | U.S. Government Guaranteed - Residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0		0
Available-for-sale securities	0		0
Recurring [Member] | Level 3 [Member] | GSEs – Residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0		0
Available-for-sale securities	0		0
Recurring [Member] | Level 3 [Member] | GSEs – Commercial MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0		0
Available-for-sale securities	0		0
Recurring [Member] | Netting Adjustment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[4]	0	[5]
Available-for-sale securities	0	[4]	0	[5]
Interest-rate-exchange Agreements Derivative Assets	(115,610)	[4]	(213,484)	[5]
Derivative Assets	(115,610)	[4]	(213,484)	[5]
Total assets at fair value	(115,610)	[4]	(213,484)	[5]
Interest-rate-exchange Agreements Derivative Liabilities	115,280	[4]	193,243	[5]
Total liabilities at fair value	115,280	[4]	193,243	[5]
Recurring [Member] | Netting Adjustment [Member] | Mortgage-Delivery Commmitment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage delivery commitments	0	[4]	0	[5]
Mortgage delivery commitments	0
Recurring [Member] | Netting Adjustment [Member] | Supranational institutions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	[4]	0	[5]
Recurring [Member] | Netting Adjustment [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	[3],[4]	0	[3],[5]
Recurring [Member] | Netting Adjustment [Member] | U.S. government-owned corporations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	[4]	0	[5]
Recurring [Member] | Netting Adjustment [Member] | GSEs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	[4]	0	[5]
Recurring [Member] | Netting Adjustment [Member] | U.S. Government Guaranteed - Residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[4]	0	[5]
Available-for-sale securities	0	[4]	0	[5]
Recurring [Member] | Netting Adjustment [Member] | GSEs – Residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[4]	0	[5]
Available-for-sale securities	0	[4]	0	[5]
Recurring [Member] | Netting Adjustment [Member] | GSEs – Commercial MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[4]	0	[5]
Available-for-sale securities	0	[4]	0	[5]
Recurring [Member] | Total Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	279,420		274,164
Available-for-sale securities	5,764,096		5,280,199
Interest-rate-exchange Agreements Derivative Assets	444		16,393
Derivative Assets	529		16,521
Total assets at fair value	6,044,045		5,570,884
Interest-rate-exchange Agreements Derivative Liabilities	(949,607)		(905,304)
Total liabilities at fair value	(949,735)		(905,304)
Recurring [Member] | Total Fair Value [Member] | Mortgage-Delivery Commmitment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage delivery commitments	85		128
Mortgage delivery commitments	(128)
Recurring [Member] | Total Fair Value [Member] | Supranational institutions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	473,416		469,242
Recurring [Member] | Total Fair Value [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	308,225	[3]	564,312	[3]
Recurring [Member] | Total Fair Value [Member] | U.S. government-owned corporations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	293,600		284,844
Recurring [Member] | Total Fair Value [Member] | GSEs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	2,148,466		2,782,421
Recurring [Member] | Total Fair Value [Member] | U.S. Government Guaranteed - Residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	17,496		18,880
Available-for-sale securities	76,957		91,228
Recurring [Member] | Total Fair Value [Member] | GSEs – Residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	5,380		6,663
Available-for-sale securities	2,361,517		984,808
Recurring [Member] | Total Fair Value [Member] | GSEs – Commercial MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	256,544		248,621
Available-for-sale securities	$ 101,915		$ 103,344

[1] Mortgage-delivery commitments are classified as derivatives with changes in fair value recorded in other income.

[2] Carried at fair value on a recurring basis.

[3] These securities are corporate debentures guaranteed by the FDIC under the FDIC's Temporary Liquidity Guarantee Program. The FDIC guarantee carries the full faith and credit of the U.S. Government.

[4] These amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparty. Net cash collateral associated with derivatives, including accrued interest, as of September 30, 2012, totaled $330,000.

[5] These amounts represent the effect of master-netting agreements intended to allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparty. Net cash collateral associated with derivatives, including accrued interest, as of December 31, 2011, totaled $20.2 million.

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Advances (Prepayment Fees) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Advances [Abstract]
Prepayment fees received from borrowers	$ 23,247	$ 49,976	$ 91,471	$ 68,641
Less: hedging fair-value adjustments on prepaid advances	(11,125)	(45,848)	(50,270)	(52,822)
Less: net premiums associated with prepaid advances	(1,433)	(1,218)	(1,770)	(1,781)
Less: deferred recognition of prepayment fees received from borrowers on advance prepayments deemed to be loan modifications	(2,893)	(1,084)	(4,580)	(2,461)
Prepayment fees recognized in income on advance restructurings deemed to be extinguishments	4,078	7,240	9,497	8,816
Net prepayment fees recognized in income	$ 11,874	$ 9,066	$ 44,348	$ 20,393

XML

Advances (Advances Outstanding by the Earlier of Contractual Maturity or Next Put Date ) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Advances [Abstract]
Overdrawn demand-deposit accounts	$ 13,013	$ 7,683
Due in one year or less, Par Value	14,311,649	12,244,459
Due after one year through two years, Par Value	1,848,588	4,975,328
Due after two years through three years, Par Value	2,065,353	2,231,354
Due after three years through four years, Par Value	1,707,941	1,797,337
Due after four years through five years, Par Value	1,541,670	1,713,831
Thereafter, Par Value	1,856,097	1,611,180
Total par value	$ 23,344,311	$ 24,581,172
Overdrawn demand-deposit accounts, Percentage of Total	0.10%	0.00%
Due in one year or less, Percentage of Total	61.30%	49.80%
Due after one year through two years, Percentage of Total	7.90%	20.20%
Due after two years through three years, Percentage of Total	8.80%	9.10%
Due after three years through four years, Percentage of Total	7.30%	7.30%
Due after four years through five years, Percentage of Total	6.60%	7.00%
Thereafter, Percentage of Total	8.00%	6.60%
Total Percentage	100.00%	100.00%

XML

Advances (Tables)

9 Months Ended

Sep. 30, 2012

Advances [Abstract]

Advances Redemption Terms [Table Text Block]

At September 30, 2012 and December 31, 2011, we had advances outstanding with interest rates ranging from (0.03) percent to 8.37 percent and 0.00 percent to 8.37 percent, respectively, as summarized below (dollars in thousands). Advances with negative interest rates contain embedded interest rate features that have met the requirements to be separated from the host contract and are recorded as stand-alone derivatives, and which we economically hedge with derivatives containing offsetting interest rate features.  

	September 30, 2012					December 31, 2011
Year of Contractual Maturity	Amount			Weighted Average Rate		Amount			Weighted Average Rate
Overdrawn demand-deposit accounts	$	13,013		0.54	%	$	7,683		0.45	%
Due in one year or less	11,087,724			0.88		8,266,384			1.15
Due after one year through two years	2,209,838			2.75		5,563,728			1.98
Due after two years through three years	2,341,603			2.71		2,721,354			2.88
Due after three years through four years	2,003,841			2.72		1,997,587			2.96
Due after four years through five years	3,094,195			3.01		2,151,231			2.90
Thereafter	2,594,097			3.23		3,873,205			3.71
Total par value	23,344,311			1.94	%	24,581,172			2.23	%
Premiums	50,035					37,378
Discounts	(22,965		)			(23,748		)
Market value of embedded derivatives (1)	1,008					—
Hedging adjustments	543,298					600,096
Total	$	23,915,687				$	25,194,898

_________________________

(1) At September 30, 2012, the Bank had certain advances with embedded features that met the requirements to be separated from the host contract and designate the embedded features as a stand-alone derivative.

Advances by Year of the Earlier of Contractual Maturity or Next Put Date [Table Text Block]

The following table sets forth our advances outstanding by the year of contractual maturity or next put date for putable advances (dollars in thousands):

	September 30, 2012				December 31, 2011
Year of Contractual Maturity or Next Put Date	Par Value		Percentage of Total		Par Value		Percentage of Total
Overdrawn demand-deposit accounts	$	13,013	0.1	%	$	7,683	0.0	%
Due in one year or less	14,311,649		61.3		12,244,459		49.8
Due after one year through two years	1,848,588		7.9		4,975,328		20.2
Due after two years through three years	2,065,353		8.8		2,231,354		9.1
Due after three years through four years	1,707,941		7.3		1,797,337		7.3
Due after four years through five years	1,541,670		6.6		1,713,831		7.0
Thereafter	1,856,097		8.0		1,611,180		6.6
Total par value	$	23,344,311	100.0	%	$	24,581,172	100.0	%

Advances by Interest Rate Payment Terms [Table Text Block]

The following table details interest-rate-payment types for our outstanding advances (dollars in thousands):

Par value of advances	September 30, 2012		December 31, 2011
Fixed-rate	$	19,272,798	$	20,096,489
Variable-rate	4,071,513		4,484,683
Total par value	$	23,344,311	$	24,581,172

Schedule of Prepayment Fees on Advances [Table Text Block]

For the three and nine months ended September 30, 2012 and 2011, net advance prepayment fees recognized in income are reflected in the following table (dollars in thousands):

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2012			2011			2012			2011
Prepayment fees received from borrowers	$	23,247		$	49,976		$	91,471		$	68,641
Less: hedging fair-value adjustments on prepaid advances	(11,125		)	(45,848		)	(50,270		)	(52,822		)
Less: net premiums associated with prepaid advances	(1,433		)	(1,218		)	(1,770		)	(1,781		)
Less: deferred recognition of prepayment fees received from borrowers on advance prepayments deemed to be loan modifications	(2,893		)	(1,084		)	(4,580		)	(2,461		)
Prepayment fees recognized in income on advance restructurings deemed to be extinguishments	4,078			7,240			9,497			8,816
Net prepayment fees recognized in income	$	11,874		$	9,066		$	44,348		$	20,393

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Available-for-Sale Securities (Redemption Terms) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 5,797,013		$ 5,328,759
Fair Value	5,764,096		5,280,199
Other Than Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Due in One Year or Less, Amortized Cost	1,357,937		1,213,636
Due in One Year or Less, Fair Value	1,367,719		1,217,440
Due after One Year Through Five Years, Amortized Cost	940,786		1,957,683
Due after One Year Through Five Years, Fair Value	964,947		2,008,268
Due after Five Years Through Ten Years, Amortized Cost	0		0
Due after Five Years Through Ten Years, Fair Value	0		0
Due after Ten Years, Amortized Cost	992,299		983,553
Due after Ten Years, Fair Value	891,041		875,111
Amortized Cost	3,291,022		4,154,872
Fair Value	3,223,707		4,100,819
MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,505,991	[1]	1,173,887	[1]
Fair Value	$ 2,540,389	[1]	$ 1,179,380	[1]

[1] MBS are not presented by contractual maturity because their expected maturities will likely differ from contractual maturities because borrowers of the underlying loans may have the right to call or prepay obligations with or without call or prepayment fees.

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Capital

9 Months Ended

Sep. 30, 2012

Capital [Abstract]

Capital [Text Block]

Capital

We are subject to capital requirements under our capital plan, the FHLBank Act and Finance Agency regulations:

1.Risk-based capital. We are required to maintain at all times permanent capital, defined as Class B stock and retained earnings, in an amount at least equal to the sum of our credit-risk capital requirement, market-risk capital requirement, and operations-risk capital requirement, calculated in accordance with Finance Agency rules and regulations, referred to herein as the risk-based capital requirement. Only permanent capital satisfies this risk-based capital requirement. The Finance Agency may require us to maintain a greater amount of permanent capital than is required as defined by the risk-based capital requirements.

2.Total regulatory capital. We are required to maintain at all times a total capital-to-assets ratio of at least four percent. Total regulatory capital is the sum of permanent capital, any general loss allowance if consistent with GAAP and not established for specific assets, and other amounts from sources determined by the Finance Agency as available to absorb losses.

3.Leverage capital. We are required to maintain at all times a leverage capital-to-assets ratio of at least five percent. A leverage capital-to-assets ratio is defined as permanent capital weighted 1.5 times divided by total assets.

Mandatorily redeemable capital stock, which is classified as a liability under GAAP, is considered capital for determining our compliance with our regulatory capital requirements.

The following tables demonstrate our compliance with our regulatory capital requirements at September 30, 2012, and December 31, 2011 (dollars in thousands):

Risk-Based Capital Requirements	September 30, 2012		December 31, 2011
Permanent capital
Class B capital stock	$	3,433,016	$	3,625,348
Mandatorily redeemable capital stock	215,863		227,429
Retained earnings	538,234		398,097
Total permanent capital	$	4,187,113	$	4,250,874
Risk-based capital requirement
Credit-risk capital	$	494,777	$	582,879
Market-risk capital	71,865		91,337
Operations-risk capital	169,993		202,265
Total risk-based capital requirement	$	736,635	$	876,481
Excess of risk-based capital requirement	$	3,450,478	$	3,374,393

	September 30, 2012						December 31, 2011
	Required			Actual			Required			Actual
Capital Ratio
Risk-based capital	$	736,635		$	4,187,113		$	876,481		$	4,250,874
Total regulatory capital	$	1,829,701		$	4,187,113		$	1,998,733		$	4,250,874
Total capital-to-asset ratio	4.0		%	9.2		%	4.0		%	8.5		%
Leverage Ratio
Leverage capital	$	2,287,127		$	6,280,670		$	2,498,417		$	6,376,311
Leverage capital-to-assets ratio	5.0		%	13.7		%	5.0		%	12.8		%

Restricted Retained Earnings. Pursuant to a joint capital enhancement agreement among the FHLBanks, as amended (the Joint Capital Agreement), and our capital plan, we, together with the other FHLBanks, are required to contribute 20 percent of our quarterly net income to a restricted retained earnings account until the balance of that account equals at least one percent of the FHLBank's average balance of outstanding COs (excluding fair-value adjustments) for the calendar quarter. At September 30, 2012, our contribution requirement totaled $417.8 million. As of September 30, 2012, and December 31, 2011, restricted retained earnings totaled $53.7 million and $22.9 million, respectively.

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Transactions with Related Parties

9 Months Ended

Sep. 30, 2012

Related Party Transactions [Abstract]

Transactions with Related Parties [Text Block]

Transactions with Related Parties

We define related parties as those members whose capital stock holdings are in excess of 10 percent of total capital stock outstanding. The following table presents member holdings of 10 percent or more of total capital stock outstanding at September 30, 2012, and December 31, 2011 (dollars in thousands):

	September 30, 2012				December 31, 2011
	Capital Stock Outstanding		Percent of Total		Capital Stock Outstanding		Percent of Total
Bank of America Rhode Island, N.A. (1)	$	978,084	26.8	%	$	1,084,710	28.2	%
RBS Citizens N.A.	484,517		13.3		515,748		13.4

_________________________

(1) Capital stock outstanding at September 30, 2012, and December 31, 2011, includes $1.9 million and $2.2 million, respectively, held by CW Reinsurance Company, a subsidiary of Bank of America Corporation.

The following table presents outstanding advances to related parties and total accrued interest receivable from those advances as of September 30, 2012, and December 31, 2011 (dollars in thousands):

	Par Value of Advances		Percent of Total Par Value of Advances		Total Accrued Interest Receivable		Percent of Total Accrued Interest Receivable on Advances
As of September 30, 2012
RBS Citizens N.A.	$	3,520,085	15.1	%	$	646	1.6	%
Bank of America Rhode Island, N.A.	600,323		2.6		893		2.2
As of December 31, 2011
RBS Citizens N.A.	$	4,620,022	18.8	%	$	335	0.7	%
Bank of America Rhode Island, N.A.	96,261		0.4		454		1.0

The following table presents an analysis of advances activity with related parties for the nine months endedSeptember 30, 2012 (dollars in thousands):

			For the Nine Months Ended September 30, 2012
	Balance at December 31, 2011		Disbursements to Members		Payments from Members			Balance at September 30, 2012
RBS Citizens N.A.	$	4,620,022	$	12,250,570	$	(13,350,507	)	$	3,520,085
Bank of America Rhode Island, N.A.	96,261		1,511,042		(1,006,980		)	600,323

We recognized interest income on outstanding advances from the above members during the three and nine months endedSeptember 30, 2012, and 2011, as follows (dollars in thousands):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
RBS Citizens N.A.	$	3,155	$	2,645	$	8,367	$	9,158
Bank of America Rhode Island, N.A.	2,137		3,175		5,114		11,142

The following table presents an analysis of outstanding derivatives with affiliates of related parties at September 30, 2012, and December 31, 2011 (dollars in thousands):

			September 30, 2012				December 31, 2011
Derivatives Counterparty	Affiliate Member	Primary Relationship	Notional Amount		Percent of Total Derivatives (1)		Notional Amount		Percent of Total Derivatives (1)
Bank of America, N.A.	Bank of America Rhode Island, N.A.	Dealer	$	1,041,150	5.9	%	$	973,750	4.7	%
Royal Bank of Scotland, PLC	RBS Citizens, N.A.	Dealer	95,000		0.5		96,300		0.5

_________________________

(1)The percent of total derivatives outstanding is based on the stated notional amount of all derivatives outstanding

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Available-for-Sale Securities (Narratives) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Available For Sale Securities, Unamortized Premium (Discount), Net	$ 75.3	$ 77.2
Percent of fixed rate available-for-sale securities swapped to a floating rate	22.00%	25.40%
Other Than Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available For Sale Securities, Unamortized Premium (Discount), Net	57.5	81.0
MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Available For Sale Securities, Unamortized Premium (Discount), Net	$ 17.8	$ (3.8)

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Capital (Tables)

9 Months Ended

Sep. 30, 2012

Capital [Abstract]

Compliance with Regulatory Capital Requirements [Table Text Block]

The following tables demonstrate our compliance with our regulatory capital requirements at September 30, 2012, and December 31, 2011 (dollars in thousands):

Risk-Based Capital Requirements	September 30, 2012		December 31, 2011
Permanent capital
Class B capital stock	$	3,433,016	$	3,625,348
Mandatorily redeemable capital stock	215,863		227,429
Retained earnings	538,234		398,097
Total permanent capital	$	4,187,113	$	4,250,874
Risk-based capital requirement
Credit-risk capital	$	494,777	$	582,879
Market-risk capital	71,865		91,337
Operations-risk capital	169,993		202,265
Total risk-based capital requirement	$	736,635	$	876,481
Excess of risk-based capital requirement	$	3,450,478	$	3,374,393

	September 30, 2012						December 31, 2011
	Required			Actual			Required			Actual
Capital Ratio
Risk-based capital	$	736,635		$	4,187,113		$	876,481		$	4,250,874
Total regulatory capital	$	1,829,701		$	4,187,113		$	1,998,733		$	4,250,874
Total capital-to-asset ratio	4.0		%	9.2		%	4.0		%	8.5		%
Leverage Ratio
Leverage capital	$	2,287,127		$	6,280,670		$	2,498,417		$	6,376,311
Leverage capital-to-assets ratio	5.0		%	13.7		%	5.0		%	12.8		%

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Statements of Comprehensive Income (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Statement of Other Comprehensive Income [Abstract]
Net income	$ 50,820	$ 49,986	$ 153,608	$ 94,885
Net unrealized gains (losses) on available-for-sale securities
Net unrealized gains (losses)	17,525	(30,389)	15,643	(5,552)
Reclassification adjustment for realized gain included in net income	0	0	0	(12,801)
Total net unrealized gains (losses) on available-for-sale securities	17,525	(30,389)	15,643	(18,353)
Net noncredit portion of other-than-temporary impairment losses on held-to-maturity securities
Noncredit portion	(2,013)	(5,231)	(10,931)	(16,910)
Reclassification adjustment for noncredit portion of other-than-temporary impairment losses recognized as credit losses included in net income	1,028	4,105	2,257	58,516
Accretion of noncredit portion	17,838	35,288	56,131	125,197
Total net noncredit portion of other-than-temporary impairment losses on held-to-maturity securities	16,853	34,162	47,457	166,803
Net unrealized (losses) gains relating to hedging activities
Unrealized losses	(10,448)	(25,158)	(32,874)	(26,843)
Reclassification adjustment for previously deferred hedging gains and losses included in net income	4	4	11	11
Total net unrealized losses relating to hedging activities	(10,444)	(25,154)	(32,863)	(26,832)
Pension and postretirement benefits	(166)	(75)	(500)	(224)
Total other comprehensive income (loss)	23,768	(21,456)	29,737	121,394
Total comprehensive income	$ 74,588	$ 28,530	$ 183,345	$ 216,279

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Transactions with Related Parties (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011	Sep. 30, 2012		Sep. 30, 2011	Dec. 31, 2011
Related Party Transaction [Line Items]
Capital Stock Outstanding	$ 3,433,016			$ 3,433,016			$ 3,625,348
Total Accrued Interest Receivable	95,950			95,950			116,517
Advances Activity with Related Parties [Roll Forward]
Par Value of Advances				24,581,172
Disbursements to Members				109,610,045		98,566,753
Payments from Members				(110,843,079)		(101,596,921)
Par Value of Advances	23,344,311			23,344,311
Interest income on outstanding advances	72,551		80,163	225,037		249,670
Notional amount of outstanding derivative contracts with related party affiliate	17,597,156			17,597,156			20,579,506
Bank of America Rhode Island, N.A. [Member]
Related Party Transaction [Line Items]
Capital Stock Outstanding	978,084	[1]		978,084	[1]		1,084,710	[1]
Percent of Total	26.80%	[1]		26.80%	[1]		28.20%	[1]
Percent of Total Par Value of Advances	2.60%			2.60%			0.40%
Total Accrued Interest Receivable	893			893			454
Percent of Total Accrued Interest Receivable on Advances	2.20%			2.20%			1.00%
Advances Activity with Related Parties [Roll Forward]
Par Value of Advances				96,261
Disbursements to Members				1,511,042
Payments from Members				(1,006,980)
Par Value of Advances	600,323			600,323
Interest income on outstanding advances	2,137		3,175	5,114		11,142
Notional amount of outstanding derivative contracts with related party affiliate	1,041,150			1,041,150			973,750
Percent of Total Derivatives	5.90%	[2]		5.90%	[2]		4.70%	[2]
RBS Citizens N.A. [Member]
Related Party Transaction [Line Items]
Capital Stock Outstanding	484,517			484,517			515,748
Percent of Total	13.30%			13.30%			13.40%
Percent of Total Par Value of Advances	15.10%			15.10%			18.80%
Total Accrued Interest Receivable	646			646			335
Percent of Total Accrued Interest Receivable on Advances	1.60%			1.60%			0.70%
Advances Activity with Related Parties [Roll Forward]
Par Value of Advances				4,620,022
Disbursements to Members				12,250,570
Payments from Members				(13,350,507)
Par Value of Advances	3,520,085			3,520,085
Interest income on outstanding advances	3,155		2,645	8,367		9,158
Notional amount of outstanding derivative contracts with related party affiliate	95,000			95,000			96,300
Percent of Total Derivatives	0.50%	[2]		0.50%	[2]		0.50%	[2]
CW Reinsurance Company [Member]
Related Party Transaction [Line Items]
Capital Stock Outstanding	$ 1,900			$ 1,900			$ 2,200
Minimum [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Definiton of Related Party Capital Stock, Percent	10.00%			10.00%

[1] Capital stock outstanding at September 30, 2012, and December 31, 2011, includes $1.9 million and $2.2 million, respectively, held by CW Reinsurance Company, a subsidiary of Bank of America Corporation.

[2] The percent of total derivatives outstanding is based on the stated notional amount of all derivatives outstanding.

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Trading Securities

9 Months Ended

Sep. 30, 2012

Trading Securities [Abstract]

Trading Securities (and Certain Trading Assets) Disclosure [Text Block]

Trading Securities

Major Security Types. Our trading securities as of September 30, 2012, and December 31, 2011, were (dollars in thousands):

	September 30, 2012		December 31, 2011
Mortgage-backed-securities (MBS)
United States (U.S.) government-guaranteed – residential	$	17,496	$	18,880
Government sponsored enterprises (GSEs) – residential	5,380		6,663
GSEs – commercial	256,544		248,621
Total	$	279,420	$	274,164

Net unrealized gains on trading securities for the nine months endedSeptember 30, 2012 and 2011, amounted to $8.3 million and $17.6 million for securities held on September 30, 2012 and 2011, respectively.

We do not participate in speculative trading practices and typically hold these investments over a longer time horizon.

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Other-Than-Temporary Impairment (Projected Home Prices Recoveries) (Details)	9 Months Ended
	Sep. 30, 2012	Jun. 30, 2012
Recovery Range Annualized % [Line Items]
Projected House Price Decline Rate, Period	3 months
Minimum [Member]
Recovery Range Annualized % [Line Items]
Current-to-trough home price decline rate	0.00%
Period Assumed For Housing Markets That Have Not Reached Trough	3 months
Projected house price decline rate		1.00%
1-6 months	0.00%
7-18 months	0.00%
19-24 months	1.00%
25-30 months	2.00%
31-42 months	2.00%
43-66 months	2.00%
Thereafter	2.30%
Maximum [Member]
Recovery Range Annualized % [Line Items]
Current-to-trough home price decline rate	4.00%
Period Assumed For Housing Markets That Have Not Reached Trough	9 months
Projected house price decline rate		2.00%
1-6 months	2.80%
7-18 months	3.00%
19-24 months	4.00%
25-30 months	4.00%
31-42 months	5.00%
43-66 months	6.00%
Thereafter	5.60%

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Employee Retirement Plans (Details) (USD $)	3 Months Ended			9 Months Ended				12 Months Ended
	Sep. 30, 2012		Sep. 30, 2011	Sep. 30, 2012		Sep. 30, 2011		Dec. 31, 2011
Pentegra Defined Benefit Plan [Member]
Employee Retirement Plans [Line Items]
Net pension cost	$ 1,104,000		$ 1,250,000	$ 3,212,000		$ 3,098,000
Pentegra Defined Contribution Plan [Member]
Employee Retirement Plans [Line Items]
Defined contribution plan expense	232,000		212,000	713,000		646,000
Thrift Benefit Equalization Plan [Member]
Employee Retirement Plans [Line Items]
Nonqualified defined contribution plan obligation	3,600,000			3,600,000				3,200,000
Defined contribution plan expense	11,000		16,000	80,000		68,000
Supplemental Employee Retirement Plans, Defined Benefit [Member]
Employee Retirement Plans [Line Items]
Benefit obligation at beginning of year				5,901,000	[1]	3,859,000	[1]	3,859,000	[1]
Change in benefit obligation [Roll Forward]
Service cost	120,000		71,000	299,000	[1]	191,000		261,000	[1]
Interest cost	83,000		64,000	209,000	[1]	173,000		238,000	[1]
Actuarial loss (gain)				860,000	[1]			1,543,000	[1]
Benefits paid				(301,000)	[1]			0	[1]
Benefit obligation at end of period	6,968,000	[1]		6,968,000	[1]			5,901,000	[1]
Change in plan assets [Roll Forward]
Fair value of plan assets at beginning of year				0		0		0
Employer contribution				301,000				0
Benefits paid				(301,000)	[1]			0	[1]
Fair value of plan assets at end of period	0			0				0
Funded status at end of period	(6,968,000)			(6,968,000)				(5,901,000)
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Amortization of net actuarial loss	116,000		35,000	349,000		106,000
Net periodic benefit cost	319,000		170,000	857,000		470,000
Defined Benefit Postretirement Life Insurance [Member]
Employee Retirement Plans [Line Items]
Benefit obligation at beginning of year				634,000	[1]	499,000	[1]	499,000	[1]
Change in benefit obligation [Roll Forward]
Service cost	8,000		6,000	24,000	[1]	19,000		25,000	[1]
Interest cost	7,000		7,000	21,000	[1]	20,000		26,000	[1]
Actuarial loss (gain)				(4,000)	[1]			97,000	[1]
Benefits paid				(13,000)	[1]			(13,000)	[1]
Benefit obligation at end of period	662,000	[1]		662,000	[1]			634,000	[1]
Change in plan assets [Roll Forward]
Fair value of plan assets at beginning of year				0		0		0
Employer contribution				13,000				13,000
Benefits paid				(13,000)	[1]			(13,000)	[1]
Fair value of plan assets at end of period	0			0				0
Funded status at end of period	(662,000)			(662,000)				(634,000)
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Amortization of net actuarial loss	3,000		0	7,000		1,000
Net periodic benefit cost	$ 18,000		$ 13,000	$ 52,000		$ 40,000

[1] This represents projected benefit obligation for the nonqualified supplemental defined benefit retirement plan and accumulated postretirement benefit obligation for postretirement benefits.

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Allowance for Credit Losses (Allowance Rollforward) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	$ 6,114		$ 7,181		$ 7,800		$ 8,653
Charge-offs	(77)		0		(229)		(14)
Reduction of provision for credit losses	(523)		0		(2,057)		(1,458)
Balance at end of period	5,514		7,181		5,514		7,181
Ending balance, individually evaluated for impairment	0		0		0		0
Ending balance, collectively evaluated for impairment	5,514		7,181		5,514		7,181
Individually evaluated for impairment	0	[1]	0	[1]	0	[1]	0	[1]
Collectively evaluated for impairment	$ 3,043,457	[1]	$ 2,832,696	[1]	$ 3,043,457	[1]	$ 2,832,696	[1]

[1] This amount excludes government mortgage loans because we make no allowance for credit losses based on our investments in government mortgage loans, as discussed above under — Government Mortgage Loans Held for Portfolio.

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Transactions with Other FHLBanks

9 Months Ended

Sep. 30, 2012

Transactions with Other FHLBanks [Abstract]

Transactions with Other FHLBanks [Text Block]

Transactions with Other FHLBanks

We may occasionally enter into transactions with other FHLBanks. These transactions are summarized below.

Overnight Funds. We may borrow or lend unsecured overnight funds from or to other FHLBanks. All such transactions are at current market rates. Interest income and interest expense related to these transactions with other FHLBanks are included within other interest income and interest expense from other borrowings in the statement of operations.

MPF Mortgage Loans. We pay a transaction-services fee to the FHLBank of Chicago for our participation in the MPF program. This fee is assessed monthly, and is based upon the amount of mortgage loans which we invested in after January 1, 2004, and which remain outstanding on our statement of condition. We recorded $347,000 and $285,000 in MPF transaction-services fee expense to the FHLBank of Chicago during the three months ended September 30, 2012 and September 30, 2011, respectively, which has been recorded in the statement of operations as other expense. We recorded $966,000 and $843,000 in MPF transaction-services fee expense to the FHLBank of Chicago during the nine months endedSeptember 30, 2012, and September 30, 2011, respectively.

COs. From time to time, one FHLBank may transfer to another FHLBank the COs for which the transferring FHLBank was originally the primary obligor but upon transfer the assuming FHLBank becomes the primary obligor. During the nine months endedSeptember 30, 2012, we assumed debt obligations with a par amount of $112.0 million and a fair value of approximately $130.3 million on the day they were assumed, which had been the obligations of another FHLBank. There were no transfers of COs between us and other FHLBanks during the nine months endedSeptember 30, 2011.

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Derivatives and Hedging Activities (Derivatives in Statement of Income and Impact on Interest) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative	$ 1,780		$ (186,442)		$ (59,583)		$ (136,354)
Gain/(Loss) on Hedged Item	(1,183)		186,887		59,838		138,200
Net Fair-Value Hedge Ineffectiveness	597		445		255		1,846
Effect of Derivatives on Net Interest Income	(34,737)	[1]	(41,973)	[1]	(110,130)	[1]	(130,112)	[1]
Advances [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative	1,375		(68,999)		55,505		(20,049)
Gain/(Loss) on Hedged Item	(1,116)		68,954		(56,798)		20,472
Net Fair-Value Hedge Ineffectiveness	259		(45)		(1,293)		423
Effect of Derivatives on Net Interest Income	(45,869)	[1]	(68,212)	[1]	(149,548)	[1]	(218,021)	[1]
Investments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative	7,645		(146,239)		(5,066)		(145,876)
Gain/(Loss) on Hedged Item	(7,183)		145,812		6,321		146,158
Net Fair-Value Hedge Ineffectiveness	462		(427)		1,255		282
Effect of Derivatives on Net Interest Income	(10,256)	[1]	(11,751)	[1]	(30,626)	[1]	(35,973)	[1]
Deposits [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative	(293)		(23)		(908)		(381)
Gain/(Loss) on Hedged Item	293		23		908		381
Net Fair-Value Hedge Ineffectiveness	0		0		0		0
Effect of Derivatives on Net Interest Income	385	[1]	396	[1]	1,151	[1]	1,183	[1]
COs - Bonds [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) on Derivative	(6,947)		28,819		(109,114)		29,952
Gain/(Loss) on Hedged Item	6,823		(27,902)		109,407		(28,811)
Net Fair-Value Hedge Ineffectiveness	(124)		917		293		1,141
Effect of Derivatives on Net Interest Income	$ 21,003	[1]	$ 37,594	[1]	$ 68,893	[1]	$ 122,699	[1]

[1] The net interest on derivatives in fair-value hedge relationships is presented in the interest income or interest expense of the respective hedged item in the statement of operations.

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Deposits (Tables)

9 Months Ended

Sep. 30, 2012

Deposits [Abstract]

Interest-bearing and Non-interest-bearing Deposits [Table Text Block]

The following table details interest-bearing and non-interest-bearing deposits (dollars in thousands):

	September 30, 2012		December 31, 2011
Interest bearing
Demand and overnight	$	623,302	$	600,155
Term	21,894		22,401
Other	3,585		4,571
Non-interest bearing
Other	36,547		27,119
Total deposits	$	685,328	$	654,246

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Affordable Housing Program

9 Months Ended

Sep. 30, 2012

Affordable Housing Program [Abstract]

Affordable Housing Program [Text Block]

Affordable Housing Program

We charge the amount set aside for the AHP to income and recognize it as a liability. We then reduce the AHP liability as the funds are disbursed. We had outstanding principal in AHP advances of $98.7 million and $97.9 million at September 30, 2012, and December 31, 2011, respectively.

The following table is a roll-forward of the AHP liability for the nine months endedSeptember 30, 2012, and the year ended December 31, 2011 (dollars in thousands):

	September 30, 2012			December 31, 2011
Balance at beginning of year	$	34,241		$	23,138
AHP expense for the period	17,160			17,812
AHP direct grant disbursements	(4,313		)	(5,775		)
AHP subsidy for AHP advance disbursements	(1,427		)	(1,371		)
Return of previously disbursed grants and subsidies	72			437
Balance at end of period	$	45,733		$	34,241